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Commit 9d798057 authored by Pavel Shilovsky's avatar Pavel Shilovsky
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Update CentOS 7.0 sources (3.10.0-229.1.2)

parent 2f82a4e6
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Showing with 2096 additions and 701 deletions
sources/centos70/cifs_fs_sb.h
View file @ 9d798057
......@@ -65,5 +65,6 @@ struct cifs_sb_info {
char *mountdata; /* options received at mount time or via DFS refs */
struct backing_dev_info bdi;
struct delayed_work prune_tlinks;
struct rcu_head rcu;
};
#endif /* _CIFS_FS_SB_H */
sources/centos70/cifsacl.c
View file @ 9d798057
......@@ -865,8 +865,8 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
return rc;
}
static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
__u16 fid, u32 *pacllen)
struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
const struct cifs_fid *cifsfid, u32 *pacllen)
{
struct cifs_ntsd *pntsd = NULL;
unsigned int xid;
......@@ -877,7 +877,8 @@ static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
return ERR_CAST(tlink);
xid = get_xid();
rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen);
rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), cifsfid->netfid, &pntsd,
pacllen);
free_xid(xid);
cifs_put_tlink(tlink);
......@@ -895,9 +896,10 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
int oplock = 0;
unsigned int xid;
int rc, create_options = 0;
__u16 fid;
struct cifs_tcon *tcon;
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct cifs_fid fid;
struct cifs_open_parms oparms;
if (IS_ERR(tlink))
return ERR_CAST(tlink);
......@@ -908,13 +910,20 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL,
FILE_SHARE_ALL, create_options, &fid, &oplock,
NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = READ_CONTROL;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = create_options;
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (!rc) {
rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen);
CIFSSMBClose(xid, tcon, fid);
rc = CIFSSMBGetCIFSACL(xid, tcon, fid.netfid, &pntsd, pacllen);
CIFSSMBClose(xid, tcon, fid.netfid);
}
cifs_put_tlink(tlink);
......@@ -939,7 +948,7 @@ struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb,
if (!open_file)
return get_cifs_acl_by_path(cifs_sb, path, pacllen);
pntsd = get_cifs_acl_by_fid(cifs_sb, open_file->fid.netfid, pacllen);
pntsd = get_cifs_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
cifsFileInfo_put(open_file);
return pntsd;
}
......@@ -951,10 +960,11 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
int oplock = 0;
unsigned int xid;
int rc, access_flags, create_options = 0;
__u16 fid;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct cifs_fid fid;
struct cifs_open_parms oparms;
if (IS_ERR(tlink))
return PTR_ERR(tlink);
......@@ -970,19 +980,26 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
else
access_flags = WRITE_DAC;
rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, access_flags,
FILE_SHARE_ALL, create_options, &fid, &oplock,
NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = access_flags;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = create_options;
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc) {
cifs_dbg(VFS, "Unable to open file to set ACL\n");
goto out;
}
rc = CIFSSMBSetCIFSACL(xid, tcon, fid, pnntsd, acllen, aclflag);
rc = CIFSSMBSetCIFSACL(xid, tcon, fid.netfid, pnntsd, acllen, aclflag);
cifs_dbg(NOISY, "SetCIFSACL rc = %d\n", rc);
CIFSSMBClose(xid, tcon, fid);
CIFSSMBClose(xid, tcon, fid.netfid);
out:
free_xid(xid);
cifs_put_tlink(tlink);
......@@ -992,19 +1009,31 @@ out:
/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
int
cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
struct inode *inode, const char *path, const __u16 *pfid)
struct inode *inode, const char *path,
const struct cifs_fid *pfid)
{
struct cifs_ntsd *pntsd = NULL;
u32 acllen = 0;
int rc = 0;
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct cifs_tcon *tcon;
cifs_dbg(NOISY, "converting ACL to mode for %s\n", path);
if (pfid)
pntsd = get_cifs_acl_by_fid(cifs_sb, *pfid, &acllen);
else
pntsd = get_cifs_acl(cifs_sb, inode, path, &acllen);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
if (pfid && (tcon->ses->server->ops->get_acl_by_fid))
pntsd = tcon->ses->server->ops->get_acl_by_fid(cifs_sb, pfid,
&acllen);
else if (tcon->ses->server->ops->get_acl)
pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
&acllen);
else {
cifs_put_tlink(tlink);
return -EOPNOTSUPP;
}
/* if we can retrieve the ACL, now parse Access Control Entries, ACEs */
if (IS_ERR(pntsd)) {
rc = PTR_ERR(pntsd);
......@@ -1016,6 +1045,8 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
cifs_dbg(VFS, "parse sec desc failed rc = %d\n", rc);
}
cifs_put_tlink(tlink);
return rc;
}
......@@ -1029,15 +1060,30 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
__u32 secdesclen = 0;
struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
struct cifs_tcon *tcon;
if (IS_ERR(tlink))
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
cifs_dbg(NOISY, "set ACL from mode for %s\n", path);
/* Get the security descriptor */
pntsd = get_cifs_acl(CIFS_SB(inode->i_sb), inode, path, &secdesclen);
if (tcon->ses->server->ops->get_acl == NULL) {
cifs_put_tlink(tlink);
return -EOPNOTSUPP;
}
pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
&secdesclen);
if (IS_ERR(pntsd)) {
rc = PTR_ERR(pntsd);
cifs_dbg(VFS, "%s: error %d getting sec desc\n", __func__, rc);
goto out;
cifs_put_tlink(tlink);
return rc;
}
/*
......@@ -1050,6 +1096,7 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
pnntsd = kmalloc(secdesclen, GFP_KERNEL);
if (!pnntsd) {
kfree(pntsd);
cifs_put_tlink(tlink);
return -ENOMEM;
}
......@@ -1058,14 +1105,18 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
cifs_dbg(NOISY, "build_sec_desc rc: %d\n", rc);
if (tcon->ses->server->ops->set_acl == NULL)
rc = -EOPNOTSUPP;
if (!rc) {
/* Set the security descriptor */
rc = set_cifs_acl(pnntsd, secdesclen, inode, path, aclflag);
rc = tcon->ses->server->ops->set_acl(pnntsd, secdesclen, inode,
path, aclflag);
cifs_dbg(NOISY, "set_cifs_acl rc: %d\n", rc);
}
cifs_put_tlink(tlink);
kfree(pnntsd);
kfree(pntsd);
out:
return rc;
}
sources/centos70/cifsencrypt.c
View file @ 9d798057
......@@ -548,7 +548,13 @@ static int
CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
{
int rc;
unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
struct ntlmv2_resp *ntlmv2 = (struct ntlmv2_resp *)
(ses->auth_key.response + CIFS_SESS_KEY_SIZE);
unsigned int hash_len;
/* The MD5 hash starts at challenge_key.key */
hash_len = ses->auth_key.len - (CIFS_SESS_KEY_SIZE +
offsetof(struct ntlmv2_resp, challenge.key[0]));
if (!ses->server->secmech.sdeschmacmd5) {
cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__);
......@@ -570,20 +576,21 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
}
if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED)
memcpy(ses->auth_key.response + offset,
memcpy(ntlmv2->challenge.key,
ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
else
memcpy(ses->auth_key.response + offset,
memcpy(ntlmv2->challenge.key,
ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response + offset, ses->auth_key.len - offset);
ntlmv2->challenge.key, hash_len);
if (rc) {
cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
return rc;
}
/* Note that the MD5 digest over writes anon.challenge_key.key */
rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response + CIFS_SESS_KEY_SIZE);
ntlmv2->ntlmv2_hash);
if (rc)
cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
......@@ -627,7 +634,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
int rc;
int baselen;
unsigned int tilen;
struct ntlmv2_resp *buf;
struct ntlmv2_resp *ntlmv2;
char ntlmv2_hash[16];
unsigned char *tiblob = NULL; /* target info blob */
......@@ -660,13 +667,14 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
}
ses->auth_key.len += baselen;
buf = (struct ntlmv2_resp *)
ntlmv2 = (struct ntlmv2_resp *)
(ses->auth_key.response + CIFS_SESS_KEY_SIZE);
buf->blob_signature = cpu_to_le32(0x00000101);
buf->reserved = 0;
buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
get_random_bytes(&buf->client_chal, sizeof(buf->client_chal));
buf->reserved2 = 0;
ntlmv2->blob_signature = cpu_to_le32(0x00000101);
ntlmv2->reserved = 0;
/* Must be within 5 minutes of the server */
ntlmv2->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
get_random_bytes(&ntlmv2->client_chal, sizeof(ntlmv2->client_chal));
ntlmv2->reserved2 = 0;
memcpy(ses->auth_key.response + baselen, tiblob, tilen);
......@@ -706,7 +714,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
}
rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response + CIFS_SESS_KEY_SIZE,
ntlmv2->ntlmv2_hash,
CIFS_HMAC_MD5_HASH_SIZE);
if (rc) {
cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
......
sources/centos70/cifsfs.c
View file @ 9d798057
......@@ -87,10 +87,6 @@ extern mempool_t *cifs_mid_poolp;
struct workqueue_struct *cifsiod_wq;
#ifdef CONFIG_CIFS_SMB2
__u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE];
#endif
/*
* Bumps refcount for cifs super block.
* Note that it should be only called if a referece to VFS super block is
......@@ -120,14 +116,16 @@ cifs_read_super(struct super_block *sb)
{
struct inode *inode;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
int rc = 0;
cifs_sb = CIFS_SB(sb);
tcon = cifs_sb_master_tcon(cifs_sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
sb->s_flags |= MS_POSIXACL;
if (cifs_sb_master_tcon(cifs_sb)->ses->capabilities & CAP_LARGE_FILES)
if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files)
sb->s_maxbytes = MAX_LFS_FILESIZE;
else
sb->s_maxbytes = MAX_NON_LFS;
......@@ -147,7 +145,7 @@ cifs_read_super(struct super_block *sb)
goto out_no_root;
}
if (cifs_sb_master_tcon(cifs_sb)->nocase)
if (tcon->nocase)
sb->s_d_op = &cifs_ci_dentry_ops;
else
sb->s_d_op = &cifs_dentry_ops;
......@@ -249,8 +247,9 @@ cifs_alloc_inode(struct super_block *sb)
* server, can not assume caching of file data or metadata.
*/
cifs_set_oplock_level(cifs_inode, 0);
cifs_inode->delete_pending = false;
cifs_inode->invalid_mapping = false;
cifs_inode->flags = 0;
spin_lock_init(&cifs_inode->writers_lock);
cifs_inode->writers = 0;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
cifs_inode->server_eof = 0;
cifs_inode->uniqueid = 0;
......@@ -295,7 +294,7 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
seq_printf(s, ",addr=");
seq_puts(s, ",addr=");
switch (server->dstaddr.ss_family) {
case AF_INET:
......@@ -307,7 +306,7 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
seq_printf(s, "%%%u", sa6->sin6_scope_id);
break;
default:
seq_printf(s, "(unknown)");
seq_puts(s, "(unknown)");
}
}
......@@ -317,45 +316,45 @@ cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
if (ses->sectype == Unspecified)
return;
seq_printf(s, ",sec=");
seq_puts(s, ",sec=");
switch (ses->sectype) {
case LANMAN:
seq_printf(s, "lanman");
seq_puts(s, "lanman");
break;
case NTLMv2:
seq_printf(s, "ntlmv2");
seq_puts(s, "ntlmv2");
break;
case NTLM:
seq_printf(s, "ntlm");
seq_puts(s, "ntlm");
break;
case Kerberos:
seq_printf(s, "krb5");
seq_puts(s, "krb5");
break;
case RawNTLMSSP:
seq_printf(s, "ntlmssp");
seq_puts(s, "ntlmssp");
break;
default:
/* shouldn't ever happen */
seq_printf(s, "unknown");
seq_puts(s, "unknown");
break;
}
if (ses->sign)
seq_printf(s, "i");
seq_puts(s, "i");
}
static void
cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
{
seq_printf(s, ",cache=");
seq_puts(s, ",cache=");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
seq_printf(s, "strict");
seq_puts(s, "strict");
else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
seq_printf(s, "none");
seq_puts(s, "none");
else
seq_printf(s, "loose");
seq_puts(s, "loose");
}
static void
......@@ -388,7 +387,7 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
cifs_show_cache_flavor(s, cifs_sb);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
seq_printf(s, ",multiuser");
seq_puts(s, ",multiuser");
else if (tcon->ses->user_name)
seq_printf(s, ",username=%s", tcon->ses->user_name);
......@@ -414,16 +413,16 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
seq_printf(s, ",uid=%u",
from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
seq_printf(s, ",forceuid");
seq_puts(s, ",forceuid");
else
seq_printf(s, ",noforceuid");
seq_puts(s, ",noforceuid");
seq_printf(s, ",gid=%u",
from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
seq_printf(s, ",forcegid");
seq_puts(s, ",forcegid");
else
seq_printf(s, ",noforcegid");
seq_puts(s, ",noforcegid");
cifs_show_address(s, tcon->ses->server);
......@@ -435,50 +434,50 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
cifs_show_nls(s, cifs_sb->local_nls);
if (tcon->seal)
seq_printf(s, ",seal");
seq_puts(s, ",seal");
if (tcon->nocase)
seq_printf(s, ",nocase");
seq_puts(s, ",nocase");
if (tcon->retry)
seq_printf(s, ",hard");
seq_puts(s, ",hard");
if (tcon->unix_ext)
seq_printf(s, ",unix");
seq_puts(s, ",unix");
else
seq_printf(s, ",nounix");
seq_puts(s, ",nounix");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
seq_printf(s, ",posixpaths");
seq_puts(s, ",posixpaths");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
seq_printf(s, ",setuids");
seq_puts(s, ",setuids");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
seq_printf(s, ",serverino");
seq_puts(s, ",serverino");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
seq_printf(s, ",rwpidforward");
seq_puts(s, ",rwpidforward");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL)
seq_printf(s, ",forcemand");
seq_puts(s, ",forcemand");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
seq_printf(s, ",nouser_xattr");
seq_puts(s, ",nouser_xattr");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
seq_printf(s, ",mapchars");
seq_puts(s, ",mapchars");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
seq_printf(s, ",sfu");
seq_puts(s, ",sfu");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
seq_printf(s, ",nobrl");
seq_puts(s, ",nobrl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
seq_printf(s, ",cifsacl");
seq_puts(s, ",cifsacl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
seq_printf(s, ",dynperm");
seq_puts(s, ",dynperm");
if (root->d_sb->s_flags & MS_POSIXACL)
seq_printf(s, ",acl");
seq_puts(s, ",acl");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
seq_printf(s, ",mfsymlinks");
seq_puts(s, ",mfsymlinks");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
seq_printf(s, ",fsc");
seq_puts(s, ",fsc");
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL))
seq_printf(s, ",wine");
seq_puts(s, ",wine");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
seq_printf(s, ",nostrictsync");
seq_puts(s, ",nostrictsync");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
seq_printf(s, ",noperm");
seq_puts(s, ",noperm");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
seq_printf(s, ",backupuid=%u",
from_kuid_munged(&init_user_ns,
......@@ -732,19 +731,26 @@ static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
ssize_t written;
int rc;
written = cifs_get_writer(cinode);
if (written)
return written;
written = generic_file_aio_write(iocb, iov, nr_segs, pos);
if (CIFS_CACHE_WRITE(CIFS_I(inode)))
return written;
goto out;
rc = filemap_fdatawrite(inode->i_mapping);
if (rc)
cifs_dbg(FYI, "cifs_file_aio_write: %d rc on %p inode\n",
rc, inode);
out:
cifs_put_writer(cinode);
return written;
}
......@@ -815,6 +821,12 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
return -EAGAIN;
}
static int cifs_rename(struct inode *old_dir, struct dentry *old,
struct inode *new_dir, struct dentry *new)
{
return cifs_rename2(old_dir, old, new_dir, new, 0);
}
struct file_system_type cifs_fs_type = {
.owner = THIS_MODULE,
.name = "cifs",
......@@ -823,7 +835,8 @@ struct file_system_type cifs_fs_type = {
/* .fs_flags */
};
MODULE_ALIAS_FS("cifs");
const struct inode_operations cifs_dir_inode_ops = {
const struct inode_operations_wrapper cifs_dir_inode_ops = {
.ops = {
.create = cifs_create,
.atomic_open = cifs_atomic_open,
.lookup = cifs_lookup,
......@@ -844,13 +857,14 @@ const struct inode_operations cifs_dir_inode_ops = {
.listxattr = cifs_listxattr,
.removexattr = cifs_removexattr,
#endif
},
.rename2 = cifs_rename2,
};
const struct inode_operations cifs_file_inode_ops = {
/* revalidate:cifs_revalidate, */
.setattr = cifs_setattr,
.getattr = cifs_getattr, /* do we need this anymore? */
.rename = cifs_rename,
.permission = cifs_permission,
#ifdef CONFIG_CIFS_XATTR
.setxattr = cifs_setxattr,
......@@ -863,7 +877,7 @@ const struct inode_operations cifs_file_inode_ops = {
const struct inode_operations cifs_symlink_inode_ops = {
.readlink = generic_readlink,
.follow_link = cifs_follow_link,
.put_link = cifs_put_link,
.put_link = kfree_put_link,
.permission = cifs_permission,
/* BB add the following two eventually */
/* revalidate: cifs_revalidate,
......@@ -1006,7 +1020,7 @@ cifs_init_once(void *inode)
init_rwsem(&cifsi->lock_sem);
}
static int
static int __init
cifs_init_inodecache(void)
{
cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
......@@ -1181,10 +1195,6 @@ init_cifs(void)
spin_lock_init(&cifs_file_list_lock);
spin_lock_init(&GlobalMid_Lock);
#ifdef CONFIG_CIFS_SMB2
get_random_bytes(cifs_client_guid, SMB2_CLIENT_GUID_SIZE);
#endif
if (cifs_max_pending < 2) {
cifs_max_pending = 2;
cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");
......
sources/centos70/cifsfs.h
View file @ 9d798057
......@@ -22,20 +22,28 @@
#ifndef _CIFSFS_H
#define _CIFSFS_H
#include <linux/hash.h>
#define ROOT_I 2
/*
* ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
* so that it will fit.
* so that it will fit. We use hash_64 to convert the value to 31 bits, and
* then add 1, to ensure that we don't end up with a 0 as the value.
*/
#if BITS_PER_LONG == 64
static inline ino_t
cifs_uniqueid_to_ino_t(u64 fileid)
{
ino_t ino = (ino_t) fileid;
if (sizeof(ino_t) < sizeof(u64))
ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
return ino;
return (ino_t)fileid;
}
#else
static inline ino_t
cifs_uniqueid_to_ino_t(u64 fileid)
{
return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
}
#endif
extern struct file_system_type cifs_fs_type;
extern const struct address_space_operations cifs_addr_ops;
......@@ -46,7 +54,7 @@ extern void cifs_sb_active(struct super_block *sb);
extern void cifs_sb_deactive(struct super_block *sb);
/* Functions related to inodes */
extern const struct inode_operations cifs_dir_inode_ops;
extern const struct inode_operations_wrapper cifs_dir_inode_ops;
extern struct inode *cifs_root_iget(struct super_block *);
extern int cifs_create(struct inode *, struct dentry *, umode_t,
bool excl);
......@@ -60,13 +68,15 @@ extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
extern int cifs_rmdir(struct inode *, struct dentry *);
extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
struct dentry *);
extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
struct dentry *, unsigned int);
extern int cifs_revalidate_file_attr(struct file *filp);
extern int cifs_revalidate_dentry_attr(struct dentry *);
extern int cifs_revalidate_file(struct file *filp);
extern int cifs_revalidate_dentry(struct dentry *);
extern int cifs_invalidate_mapping(struct inode *inode);
extern int cifs_revalidate_mapping(struct inode *inode);
extern int cifs_zap_mapping(struct inode *inode);
extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int cifs_setattr(struct dentry *, struct iattr *);
......@@ -115,8 +125,6 @@ extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
/* Functions related to symlinks */
extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
extern void cifs_put_link(struct dentry *direntry,
struct nameidata *nd, void *);
extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
int buflen);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
......@@ -132,5 +140,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
#define CIFS_VERSION "2.01"
#define CIFS_VERSION "2.03"
#endif /* _CIFSFS_H */
sources/centos70/cifsglob.h
View file @ 9d798057
......@@ -228,6 +228,8 @@ struct smb_version_operations {
/* verify the message */
int (*check_message)(char *, unsigned int);
bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
void (*downgrade_oplock)(struct TCP_Server_Info *,
struct cifsInodeInfo *, bool);
/* process transaction2 response */
bool (*check_trans2)(struct mid_q_entry *, struct TCP_Server_Info *,
char *, int);
......@@ -261,7 +263,7 @@ struct smb_version_operations {
/* query path data from the server */
int (*query_path_info)(const unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const char *,
FILE_ALL_INFO *, bool *);
FILE_ALL_INFO *, bool *, bool *);
/* query file data from the server */
int (*query_file_info)(const unsigned int, struct cifs_tcon *,
struct cifs_fid *, FILE_ALL_INFO *);
......@@ -278,6 +280,8 @@ struct smb_version_operations {
/* set attributes */
int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *,
const unsigned int);
int (*set_compression)(const unsigned int, struct cifs_tcon *,
struct cifsFileInfo *);
/* check if we can send an echo or nor */
bool (*can_echo)(struct TCP_Server_Info *);
/* send echo request */
......@@ -369,8 +373,12 @@ struct smb_version_operations {
void (*new_lease_key)(struct cifs_fid *);
int (*generate_signingkey)(struct cifs_ses *);
int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *,
struct cifs_sb_info *, unsigned int);
int (*query_mf_symlink)(unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const unsigned char *,
char *, unsigned int *);
int (*create_mf_symlink)(unsigned int, struct cifs_tcon *,
struct cifs_sb_info *, const unsigned char *,
char *, unsigned int *);
/* if we can do cache read operations */
bool (*is_read_op)(__u32);
/* set oplock level for the inode */
......@@ -380,6 +388,22 @@ struct smb_version_operations {
char * (*create_lease_buf)(u8 *, u8);
/* parse lease context buffer and return oplock/epoch info */
__u8 (*parse_lease_buf)(void *, unsigned int *);
int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file,
struct cifsFileInfo *target_file, u64 src_off, u64 len,
u64 dest_off);
int (*validate_negotiate)(const unsigned int, struct cifs_tcon *);
ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *,
const unsigned char *, const unsigned char *, char *,
size_t, const struct nls_table *, int);
int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *,
const char *, const void *, const __u16,
const struct nls_table *, int);
struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *,
const struct cifs_fid *, u32 *);
int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *,
int);
};
struct smb_version_values {
......@@ -535,6 +559,7 @@ struct TCP_Server_Info {
int echo_credits; /* echo reserved slots */
int oplock_credits; /* oplock break reserved slots */
bool echoes:1; /* enable echoes */
__u8 client_guid[SMB2_CLIENT_GUID_SIZE]; /* Client GUID */
#endif
u16 dialect; /* dialect index that server chose */
bool oplocks:1; /* enable oplocks */
......@@ -621,11 +646,34 @@ set_credits(struct TCP_Server_Info *server, const int val)
}
static inline __u64
get_next_mid(struct TCP_Server_Info *server)
get_next_mid64(struct TCP_Server_Info *server)
{
return server->ops->get_next_mid(server);
}
static inline __le16
get_next_mid(struct TCP_Server_Info *server)
{
__u16 mid = get_next_mid64(server);
/*
* The value in the SMB header should be little endian for easy
* on-the-wire decoding.
*/
return cpu_to_le16(mid);
}
static inline __u16
get_mid(const struct smb_hdr *smb)
{
return le16_to_cpu(smb->Mid);
}
static inline bool
compare_mid(__u16 mid, const struct smb_hdr *smb)
{
return mid == le16_to_cpu(smb->Mid);
}
/*
* When the server supports very large reads and writes via POSIX extensions,
* we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
......@@ -829,6 +877,11 @@ struct cifs_tcon {
__u32 maximal_access;
__u32 vol_serial_number;
__le64 vol_create_time;
__u32 ss_flags; /* sector size flags */
__u32 perf_sector_size; /* best sector size for perf */
__u32 max_chunks;
__u32 max_bytes_chunk;
__u32 max_bytes_copy;
#endif /* CONFIG_CIFS_SMB2 */
#ifdef CONFIG_CIFS_FSCACHE
u64 resource_id; /* server resource id */
......@@ -1069,8 +1122,15 @@ struct cifsInodeInfo {
__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
unsigned int oplock; /* oplock/lease level we have */
unsigned int epoch; /* used to track lease state changes */
bool delete_pending; /* DELETE_ON_CLOSE is set */
bool invalid_mapping; /* pagecache is invalid */
#define CIFS_INODE_PENDING_OPLOCK_BREAK (0) /* oplock break in progress */
#define CIFS_INODE_PENDING_WRITERS (1) /* Writes in progress */
#define CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2 (2) /* Downgrade oplock to L2 */
#define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */
#define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */
#define CIFS_INO_LOCK (5) /* lock bit for synchronization */
unsigned long flags;
spinlock_t writers_lock;
unsigned int writers; /* Number of writers on this inode */
unsigned long time; /* jiffies of last update of inode */
u64 server_eof; /* current file size on server -- protected by i_lock */
u64 uniqueid; /* server inode number */
......@@ -1277,6 +1337,7 @@ struct dfs_info3_param {
#define CIFS_FATTR_DELETE_PENDING 0x2
#define CIFS_FATTR_NEED_REVAL 0x4
#define CIFS_FATTR_INO_COLLISION 0x8
#define CIFS_FATTR_UNKNOWN_NLINK 0x10
struct cifs_fattr {
u32 cf_flags;
......
sources/centos70/cifspdu.h
View file @ 9d798057
......@@ -436,7 +436,7 @@ struct smb_hdr {
__u16 Tid;
__le16 Pid;
__u16 Uid;
__u16 Mid;
__le16 Mid;
__u8 WordCount;
} __attribute__((packed));
......@@ -705,7 +705,13 @@ struct ntlmssp2_name {
} __attribute__((packed));
struct ntlmv2_resp {
union {
char ntlmv2_hash[CIFS_ENCPWD_SIZE];
struct {
__u8 reserved[8];
__u8 key[CIFS_SERVER_CHALLENGE_SIZE];
} __attribute__((packed)) challenge;
} __attribute__((packed));
__le32 blob_signature;
__u32 reserved;
__le64 time;
......@@ -1360,6 +1366,35 @@ typedef struct smb_com_transaction_ioctl_req {
__u8 Data[1];
} __attribute__((packed)) TRANSACT_IOCTL_REQ;
typedef struct smb_com_transaction_compr_ioctl_req {
struct smb_hdr hdr; /* wct = 23 */
__u8 MaxSetupCount;
__u16 Reserved;
__le32 TotalParameterCount;
__le32 TotalDataCount;
__le32 MaxParameterCount;
__le32 MaxDataCount;
__le32 ParameterCount;
__le32 ParameterOffset;
__le32 DataCount;
__le32 DataOffset;
__u8 SetupCount; /* four setup words follow subcommand */
/* SNIA spec incorrectly included spurious pad here */
__le16 SubCommand; /* 2 = IOCTL/FSCTL */
__le32 FunctionCode;
__u16 Fid;
__u8 IsFsctl; /* 1 = File System Control 0 = device control (IOCTL) */
__u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
__le16 ByteCount;
__u8 Pad[3];
__le16 compression_state; /* See below for valid flags */
} __attribute__((packed)) TRANSACT_COMPR_IOCTL_REQ;
/* compression state flags */
#define COMPRESSION_FORMAT_NONE 0x0000
#define COMPRESSION_FORMAT_DEFAULT 0x0001
#define COMPRESSION_FORMAT_LZNT1 0x0002
typedef struct smb_com_transaction_ioctl_rsp {
struct smb_hdr hdr; /* wct = 19 */
__u8 Reserved[3];
......@@ -1499,15 +1534,30 @@ struct file_notify_information {
__u8 FileName[0];
} __attribute__((packed));
struct reparse_data {
__u32 ReparseTag;
__u16 ReparseDataLength;
/* For IO_REPARSE_TAG_SYMLINK */
struct reparse_symlink_data {
__le32 ReparseTag;
__le16 ReparseDataLength;
__u16 Reserved;
__u16 SubstituteNameOffset;
__u16 SubstituteNameLength;
__u16 PrintNameOffset;
__u16 PrintNameLength;
__u32 Flags;
__le16 SubstituteNameOffset;
__le16 SubstituteNameLength;
__le16 PrintNameOffset;
__le16 PrintNameLength;
__le32 Flags;
char PathBuffer[0];
} __attribute__((packed));
/* For IO_REPARSE_TAG_NFS */
#define NFS_SPECFILE_LNK 0x00000000014B4E4C
#define NFS_SPECFILE_CHR 0x0000000000524843
#define NFS_SPECFILE_BLK 0x00000000004B4C42
#define NFS_SPECFILE_FIFO 0x000000004F464946
#define NFS_SPECFILE_SOCK 0x000000004B434F53
struct reparse_posix_data {
__le32 ReparseTag;
__le16 ReparseDataLength;
__u16 Reserved;
__le64 InodeType; /* LNK, FIFO, CHR etc. */
char PathBuffer[0];
} __attribute__((packed));
......@@ -2208,6 +2258,9 @@ typedef struct {
__le32 DeviceCharacteristics;
} __attribute__((packed)) FILE_SYSTEM_DEVICE_INFO; /* device info level 0x104 */
/* minimum includes first three fields, and empty FS Name */
#define MIN_FS_ATTR_INFO_SIZE 12
typedef struct {
__le32 Attributes;
__le32 MaxPathNameComponentLength;
......
sources/centos70/cifsproto.h
View file @ 9d798057
......@@ -127,6 +127,9 @@ extern u64 cifs_UnixTimeToNT(struct timespec);
extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
int offset);
extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
extern int cifs_get_writer(struct cifsInodeInfo *cinode);
extern void cifs_put_writer(struct cifsInodeInfo *cinode);
extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode);
extern int cifs_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
......@@ -151,7 +154,7 @@ extern struct inode *cifs_iget(struct super_block *sb,
extern int cifs_get_inode_info(struct inode **inode, const char *full_path,
FILE_ALL_INFO *data, struct super_block *sb,
int xid, const __u16 *fid);
int xid, const struct cifs_fid *fid);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
struct super_block *sb, unsigned int xid);
......@@ -162,11 +165,13 @@ extern int cifs_rename_pending_delete(const char *full_path,
const unsigned int xid);
extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr, struct inode *inode,
const char *path, const __u16 *pfid);
const char *path, const struct cifs_fid *pfid);
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
kuid_t, kgid_t);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *,
const struct cifs_fid *, u32 *);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
const char *, int);
......@@ -360,11 +365,10 @@ extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,
extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
__u16 fid, char **symlinkinfo,
const struct nls_table *nls_codepage);
extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const int disposition,
const int access_flags, const int share_flags, const int omode,
__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
const struct nls_table *nls_codepage, int remap);
extern int CIFSSMB_set_compression(const unsigned int xid,
struct cifs_tcon *tcon, __u16 fid);
extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms,
int *oplock, FILE_ALL_INFO *buf);
extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const int disposition,
const int access_flags, const int omode,
......@@ -474,10 +478,11 @@ extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, unsigned int xid);
extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr,
const unsigned char *path);
extern int mdfour(unsigned char *, unsigned char *, int);
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
const struct nls_table *codepage);
......@@ -494,7 +499,12 @@ void cifs_writev_complete(struct work_struct *work);
struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages,
work_func_t complete);
void cifs_writedata_release(struct kref *refcount);
int open_query_close_cifs_symlink(const unsigned char *path, char *pbuf,
unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb,
unsigned int xid);
int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_read);
int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_written);
#endif /* _CIFSPROTO_H */
sources/centos70/cifssmb.c
View file @ 9d798057
......@@ -1280,104 +1280,124 @@ OldOpenRetry:
}
int
CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const int openDisposition,
const int access_flags, const int share_flags, const int create_options, __u16 *netfid,
int *pOplock, FILE_ALL_INFO *pfile_info,
const struct nls_table *nls_codepage, int remap)
CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock,
FILE_ALL_INFO *buf)
{
int rc = -EACCES;
OPEN_REQ *pSMB = NULL;
OPEN_RSP *pSMBr = NULL;
OPEN_REQ *req = NULL;
OPEN_RSP *rsp = NULL;
int bytes_returned;
int name_len;
__u16 count;
struct cifs_sb_info *cifs_sb = oparms->cifs_sb;
struct cifs_tcon *tcon = oparms->tcon;
int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
const struct nls_table *nls = cifs_sb->local_nls;
int create_options = oparms->create_options;
int desired_access = oparms->desired_access;
int disposition = oparms->disposition;
const char *path = oparms->path;
openRetry:
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
(void **) &pSMBr);
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req,
(void **)&rsp);
if (rc)
return rc;
pSMB->AndXCommand = 0xFF; /* none */
/* no commands go after this */
req->AndXCommand = 0xFF;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
count = 1; /* account for one byte pad to word boundary */
name_len =
cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
fileName, PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
if (req->hdr.Flags2 & SMBFLG2_UNICODE) {
/* account for one byte pad to word boundary */
count = 1;
name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1),
path, PATH_MAX, nls, remap);
/* trailing null */
name_len++;
name_len *= 2;
pSMB->NameLength = cpu_to_le16(name_len);
} else { /* BB improve check for buffer overruns BB */
count = 0; /* no pad */
name_len = strnlen(fileName, PATH_MAX);
name_len++; /* trailing null */
pSMB->NameLength = cpu_to_le16(name_len);
strncpy(pSMB->fileName, fileName, name_len);
req->NameLength = cpu_to_le16(name_len);
} else {
/* BB improve check for buffer overruns BB */
/* no pad */
count = 0;
name_len = strnlen(path, PATH_MAX);
/* trailing null */
name_len++;
req->NameLength = cpu_to_le16(name_len);
strncpy(req->fileName, path, name_len);
}
if (*pOplock & REQ_OPLOCK)
pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
else if (*pOplock & REQ_BATCHOPLOCK)
pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
pSMB->DesiredAccess = cpu_to_le32(access_flags);
pSMB->AllocationSize = 0;
/* set file as system file if special file such
as fifo and server expecting SFU style and
no Unix extensions */
if (*oplock & REQ_OPLOCK)
req->OpenFlags = cpu_to_le32(REQ_OPLOCK);
else if (*oplock & REQ_BATCHOPLOCK)
req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
req->DesiredAccess = cpu_to_le32(desired_access);
req->AllocationSize = 0;
/*
* Set file as system file if special file such as fifo and server
* expecting SFU style and no Unix extensions.
*/
if (create_options & CREATE_OPTION_SPECIAL)
pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
req->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
else
pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
req->FileAttributes = cpu_to_le32(ATTR_NORMAL);
/* XP does not handle ATTR_POSIX_SEMANTICS */
/* but it helps speed up case sensitive checks for other
servers such as Samba */
/*
* XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case
* sensitive checks for other servers such as Samba.
*/
if (tcon->ses->capabilities & CAP_UNIX)
pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
if (create_options & CREATE_OPTION_READONLY)
pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
req->ShareAccess = cpu_to_le32(oparms->share_access);
req->CreateDisposition = cpu_to_le32(disposition);
req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
pSMB->ShareAccess = cpu_to_le32(share_flags);
pSMB->CreateDisposition = cpu_to_le32(openDisposition);
pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
/* BB Expirement with various impersonation levels and verify */
pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
pSMB->SecurityFlags =
SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY;
count += name_len;
inc_rfc1001_len(pSMB, count);
inc_rfc1001_len(req, count);
pSMB->ByteCount = cpu_to_le16(count);
/* long_op set to 1 to allow for oplock break timeouts */
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *)pSMBr, &bytes_returned, 0);
req->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req,
(struct smb_hdr *)rsp, &bytes_returned, 0);
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
if (rc) {
cifs_dbg(FYI, "Error in Open = %d\n", rc);
} else {
*pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
*netfid = pSMBr->Fid; /* cifs fid stays in le */
cifs_buf_release(req);
if (rc == -EAGAIN)
goto openRetry;
return rc;
}
/* 1 byte no need to le_to_cpu */
*oplock = rsp->OplockLevel;
/* cifs fid stays in le */
oparms->fid->netfid = rsp->Fid;
/* Let caller know file was created so we can set the mode. */
/* Do we care about the CreateAction in any other cases? */
if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
*pOplock |= CIFS_CREATE_ACTION;
if (pfile_info) {
memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
36 /* CreationTime to Attributes */);
if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction)
*oplock |= CIFS_CREATE_ACTION;
if (buf) {
/* copy from CreationTime to Attributes */
memcpy((char *)buf, (char *)&rsp->CreationTime, 36);
/* the file_info buf is endian converted by caller */
pfile_info->AllocationSize = pSMBr->AllocationSize;
pfile_info->EndOfFile = pSMBr->EndOfFile;
pfile_info->NumberOfLinks = cpu_to_le32(1);
pfile_info->DeletePending = 0;
}
buf->AllocationSize = rsp->AllocationSize;
buf->EndOfFile = rsp->EndOfFile;
buf->NumberOfLinks = cpu_to_le32(1);
buf->DeletePending = 0;
}
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
goto openRetry;
cifs_buf_release(req);
return rc;
}
......@@ -3090,7 +3110,8 @@ CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
bool is_unicode;
unsigned int sub_len;
char *sub_start;
struct reparse_data *reparse_buf;
struct reparse_symlink_data *reparse_buf;
struct reparse_posix_data *posix_buf;
__u32 data_offset, data_count;
char *end_of_smb;
......@@ -3139,20 +3160,47 @@ CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
goto qreparse_out;
}
end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
reparse_buf = (struct reparse_data *)
reparse_buf = (struct reparse_symlink_data *)
((char *)&pSMBr->hdr.Protocol + data_offset);
if ((char *)reparse_buf >= end_of_smb) {
rc = -EIO;
goto qreparse_out;
}
if ((reparse_buf->PathBuffer + reparse_buf->PrintNameOffset +
reparse_buf->PrintNameLength) > end_of_smb) {
if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) {
cifs_dbg(FYI, "NFS style reparse tag\n");
posix_buf = (struct reparse_posix_data *)reparse_buf;
if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) {
cifs_dbg(FYI, "unsupported file type 0x%llx\n",
le64_to_cpu(posix_buf->InodeType));
rc = -EOPNOTSUPP;
goto qreparse_out;
}
is_unicode = true;
sub_len = le16_to_cpu(reparse_buf->ReparseDataLength);
if (posix_buf->PathBuffer + sub_len > end_of_smb) {
cifs_dbg(FYI, "reparse buf beyond SMB\n");
rc = -EIO;
goto qreparse_out;
}
*symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer,
sub_len, is_unicode, nls_codepage);
goto qreparse_out;
} else if (reparse_buf->ReparseTag !=
cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) {
rc = -EOPNOTSUPP;
goto qreparse_out;
}
/* Reparse tag is NTFS symlink */
sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) +
reparse_buf->PathBuffer;
sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength);
if (sub_start + sub_len > end_of_smb) {
cifs_dbg(FYI, "reparse buf beyond SMB\n");
rc = -EIO;
goto qreparse_out;
}
sub_start = reparse_buf->SubstituteNameOffset + reparse_buf->PathBuffer;
sub_len = reparse_buf->SubstituteNameLength;
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
is_unicode = true;
else
......@@ -3173,6 +3221,60 @@ qreparse_out:
return rc;
}
int
CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
__u16 fid)
{
int rc = 0;
int bytes_returned;
struct smb_com_transaction_compr_ioctl_req *pSMB;
struct smb_com_transaction_ioctl_rsp *pSMBr;
cifs_dbg(FYI, "Set compression for %u\n", fid);
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
(void **) &pSMBr);
if (rc)
return rc;
pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
pSMB->TotalParameterCount = 0;
pSMB->TotalDataCount = __constant_cpu_to_le32(2);
pSMB->MaxParameterCount = 0;
pSMB->MaxDataCount = 0;
pSMB->MaxSetupCount = 4;
pSMB->Reserved = 0;
pSMB->ParameterOffset = 0;
pSMB->DataCount = __constant_cpu_to_le32(2);
pSMB->DataOffset =
cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req,
compression_state) - 4); /* 84 */
pSMB->SetupCount = 4;
pSMB->SubCommand = __constant_cpu_to_le16(NT_TRANSACT_IOCTL);
pSMB->ParameterCount = 0;
pSMB->FunctionCode = __constant_cpu_to_le32(FSCTL_SET_COMPRESSION);
pSMB->IsFsctl = 1; /* FSCTL */
pSMB->IsRootFlag = 0;
pSMB->Fid = fid; /* file handle always le */
/* 3 byte pad, followed by 2 byte compress state */
pSMB->ByteCount = __constant_cpu_to_le16(5);
inc_rfc1001_len(pSMB, 5);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc)
cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc);
cifs_buf_release(pSMB);
/*
* Note: On -EAGAIN error only caller can retry on handle based calls
* since file handle passed in no longer valid.
*/
return rc;
}
#ifdef CONFIG_CIFS_POSIX
/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
......@@ -3930,7 +4032,7 @@ QFileInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
cifs_dbg(FYI, "Send error in QFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
......@@ -4099,7 +4201,7 @@ UnixQFileInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
......@@ -4183,7 +4285,7 @@ UnixQPathInfoRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
......@@ -6102,6 +6204,9 @@ QAllEAsRetry:
cifs_dbg(FYI, "ea length %d\n", list_len);
if (list_len <= 8) {
cifs_dbg(FYI, "empty EA list returned from server\n");
/* didn't find the named attribute */
if (ea_name)
rc = -ENODATA;
goto QAllEAsOut;
}
......
sources/centos70/connect.c
View file @ 9d798057
......@@ -2149,6 +2149,9 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
sizeof(tcp_ses->srcaddr));
memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
sizeof(tcp_ses->dstaddr));
#ifdef CONFIG_CIFS_SMB2
get_random_bytes(tcp_ses->client_guid, SMB2_CLIENT_GUID_SIZE);
#endif
/*
* at this point we are the only ones with the pointer
* to the struct since the kernel thread not created yet
......@@ -2230,7 +2233,7 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol)
vol->username ? vol->username : "",
CIFS_MAX_USERNAME_LEN))
return 0;
if (strlen(vol->username) != 0 &&
if ((vol->username && strlen(vol->username) != 0) &&
ses->password != NULL &&
strncmp(ses->password,
vol->password ? vol->password : "",
......@@ -2247,6 +2250,8 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
if (ses->status == CifsExiting)
continue;
if (!match_session(ses, vol))
continue;
++ses->ses_count;
......@@ -2260,24 +2265,37 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
static void
cifs_put_smb_ses(struct cifs_ses *ses)
{
unsigned int xid;
unsigned int rc, xid;
struct TCP_Server_Info *server = ses->server;
cifs_dbg(FYI, "%s: ses_count=%d\n", __func__, ses->ses_count);
spin_lock(&cifs_tcp_ses_lock);
if (ses->status == CifsExiting) {
spin_unlock(&cifs_tcp_ses_lock);
return;
}
if (--ses->ses_count > 0) {
spin_unlock(&cifs_tcp_ses_lock);
return;
}
list_del_init(&ses->smb_ses_list);
if (ses->status == CifsGood)
ses->status = CifsExiting;
spin_unlock(&cifs_tcp_ses_lock);
if (ses->status == CifsGood && server->ops->logoff) {
if (ses->status == CifsExiting && server->ops->logoff) {
xid = get_xid();
server->ops->logoff(xid, ses);
rc = server->ops->logoff(xid, ses);
if (rc)
cifs_dbg(VFS, "%s: Session Logoff failure rc=%d\n",
__func__, rc);
_free_xid(xid);
}
spin_lock(&cifs_tcp_ses_lock);
list_del_init(&ses->smb_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
sesInfoFree(ses);
cifs_put_tcp_session(server);
}
......@@ -3760,6 +3778,13 @@ CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
return rc;
}
static void delayed_free(struct rcu_head *p)
{
struct cifs_sb_info *sbi = container_of(p, struct cifs_sb_info, rcu);
unload_nls(sbi->local_nls);
kfree(sbi);
}
void
cifs_umount(struct cifs_sb_info *cifs_sb)
{
......@@ -3784,8 +3809,7 @@ cifs_umount(struct cifs_sb_info *cifs_sb)
bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb->mountdata);
unload_nls(cifs_sb->local_nls);
kfree(cifs_sb);
call_rcu(&cifs_sb->rcu, delayed_free);
}
int
......
sources/centos70/dir.c
View file @ 9d798057
......@@ -383,7 +383,7 @@ cifs_create_get_file_info:
xid);
else {
rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
xid, &fid->netfid);
xid, fid);
if (newinode) {
if (server->ops->set_lease_key)
server->ops->set_lease_key(newinode, fid);
......@@ -570,12 +570,13 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
struct cifs_tcon *pTcon;
struct cifs_tcon *tcon;
struct cifs_io_parms io_parms;
char *full_path = NULL;
struct inode *newinode = NULL;
int oplock = 0;
u16 fileHandle;
struct cifs_fid fid;
struct cifs_open_parms oparms;
FILE_ALL_INFO *buf = NULL;
unsigned int bytes_written;
struct win_dev *pdev;
......@@ -588,7 +589,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (IS_ERR(tlink))
return PTR_ERR(tlink);
pTcon = tlink_tcon(tlink);
tcon = tlink_tcon(tlink);
xid = get_xid();
......@@ -598,7 +599,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
goto mknod_out;
}
if (pTcon->unix_ext) {
if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = mode & ~current_umask(),
.ctime = NO_CHANGE_64,
......@@ -613,7 +614,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
args.uid = INVALID_UID; /* no change */
args.gid = INVALID_GID; /* no change */
}
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
......@@ -644,42 +645,45 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, GENERIC_WRITE,
FILE_SHARE_ALL, create_options, &fileHandle, &oplock,
buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = create_options;
oparms.disposition = FILE_CREATE;
oparms.path = full_path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, buf);
if (rc)
goto mknod_out;
/* BB Do not bother to decode buf since no local inode yet to put
* timestamps in, but we can reuse it safely */
/*
* BB Do not bother to decode buf since no local inode yet to put
* timestamps in, but we can reuse it safely.
*/
pdev = (struct win_dev *)buf;
io_parms.netfid = fileHandle;
io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
io_parms.tcon = pTcon;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = sizeof(struct win_dev);
if (S_ISCHR(mode)) {
memcpy(pdev->type, "IntxCHR", 8);
pdev->major =
cpu_to_le64(MAJOR(device_number));
pdev->minor =
cpu_to_le64(MINOR(device_number));
rc = CIFSSMBWrite(xid, &io_parms,
&bytes_written, (char *)pdev,
pdev->major = cpu_to_le64(MAJOR(device_number));
pdev->minor = cpu_to_le64(MINOR(device_number));
rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
NULL, 0);
} else if (S_ISBLK(mode)) {
memcpy(pdev->type, "IntxBLK", 8);
pdev->major =
cpu_to_le64(MAJOR(device_number));
pdev->minor =
cpu_to_le64(MINOR(device_number));
rc = CIFSSMBWrite(xid, &io_parms,
&bytes_written, (char *)pdev,
pdev->major = cpu_to_le64(MAJOR(device_number));
pdev->minor = cpu_to_le64(MINOR(device_number));
rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
NULL, 0);
} /* else if (S_ISFIFO) */
CIFSSMBClose(xid, pTcon, fileHandle);
CIFSSMBClose(xid, tcon, fid.netfid);
d_drop(direntry);
/* FIXME: add code here to set EAs */
......@@ -761,7 +765,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
/* if it was once a directory (but how can we tell?) we could do
shrink_dcache_parent(direntry); */
} else if (rc != -EACCES) {
cifs_dbg(VFS, "Unexpected lookup error %d\n", rc);
cifs_dbg(FYI, "Unexpected lookup error %d\n", rc);
/* We special case check for Access Denied - since that
is a common return code */
}
......
sources/centos70/file.c
View file @ 9d798057
......@@ -247,7 +247,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
xid);
else
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
xid, &fid->netfid);
xid, fid);
out:
kfree(buf);
......@@ -338,7 +338,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
spin_unlock(&cifs_file_list_lock);
if (fid->purge_cache)
cifs_invalidate_mapping(inode);
cifs_zap_mapping(inode);
file->private_data = cfile;
return cfile;
......@@ -369,6 +369,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
struct cifsLockInfo *li, *tmp;
struct cifs_fid fid;
struct cifs_pending_open open;
bool oplock_break_cancelled;
spin_lock(&cifs_file_list_lock);
if (--cifs_file->count > 0) {
......@@ -395,12 +396,12 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
* again and get at least level II oplock.
*/
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
CIFS_I(inode)->invalid_mapping = true;
set_bit(CIFS_INO_INVALID_MAPPING, &cifsi->flags);
cifs_set_oplock_level(cifsi, 0);
}
spin_unlock(&cifs_file_list_lock);
cancel_work_sync(&cifs_file->oplock_break);
oplock_break_cancelled = cancel_work_sync(&cifs_file->oplock_break);
if (!tcon->need_reconnect && !cifs_file->invalidHandle) {
struct TCP_Server_Info *server = tcon->ses->server;
......@@ -412,6 +413,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
_free_xid(xid);
}
if (oplock_break_cancelled)
cifs_done_oplock_break(cifsi);
cifs_del_pending_open(&open);
/*
......@@ -686,7 +690,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
/*
* Can not refresh inode by passing in file_info buf to be returned by
* CIFSSMBOpen and then calling get_inode_info with returned buf since
* ops->open and then calling get_inode_info with returned buf since
* file might have write behind data that needs to be flushed and server
* version of file size can be stale. If we knew for sure that inode was
* not dirty locally we could do this.
......@@ -1537,7 +1541,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
*/
if (!CIFS_CACHE_WRITE(CIFS_I(inode)) &&
CIFS_CACHE_READ(CIFS_I(inode))) {
cifs_invalidate_mapping(inode);
cifs_zap_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p due to mand locks\n",
inode);
CIFS_I(inode)->oplock = 0;
......@@ -2226,7 +2230,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
file->f_path.dentry->d_name.name, datasync);
if (!CIFS_CACHE_READ(CIFS_I(inode))) {
rc = cifs_invalidate_mapping(inode);
rc = cifs_zap_mapping(inode);
if (rc) {
cifs_dbg(FYI, "rc: %d during invalidate phase\n", rc);
rc = 0; /* don't care about it in fsync */
......@@ -2570,7 +2574,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos);
if (written > 0) {
CIFS_I(inode)->invalid_mapping = true;
set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
iocb->ki_pos = pos;
}
......@@ -2587,31 +2591,33 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
ssize_t rc = -EACCES;
BUG_ON(iocb->ki_pos != pos);
loff_t lock_pos = iocb->ki_pos;
/*
* We need to hold the sem to be sure nobody modifies lock list
* with a brlock that prevents writing.
*/
down_read(&cinode->lock_sem);
if (!cifs_find_lock_conflict(cfile, pos, iov_length(iov, nr_segs),
mutex_lock(&inode->i_mutex);
if (file->f_flags & O_APPEND)
lock_pos = i_size_read(inode);
if (!cifs_find_lock_conflict(cfile, lock_pos, iov_length(iov, nr_segs),
server->vals->exclusive_lock_type, NULL,
CIFS_WRITE_OP)) {
mutex_lock(&inode->i_mutex);
rc = __generic_file_aio_write(iocb, iov, nr_segs,
&iocb->ki_pos);
mutex_unlock(&inode->i_mutex);
}
if (rc > 0 || rc == -EIOCBQUEUED) {
if (rc > 0) {
ssize_t err;
err = generic_write_sync(file, pos, rc);
if (err < 0 && rc > 0)
err = generic_write_sync(file, iocb->ki_pos - rc, rc);
if (err < 0)
rc = err;
}
} else {
mutex_unlock(&inode->i_mutex);
}
up_read(&cinode->lock_sem);
return rc;
}
......@@ -2628,12 +2634,20 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
ssize_t written;
written = cifs_get_writer(cinode);
if (written)
return written;
if (CIFS_CACHE_WRITE(cinode)) {
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
return generic_file_aio_write(iocb, iov, nr_segs, pos);
return cifs_writev(iocb, iov, nr_segs, pos);
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) {
written = generic_file_aio_write(
iocb, iov, nr_segs, pos);
goto out;
}
written = cifs_writev(iocb, iov, nr_segs, pos);
goto out;
}
/*
* For non-oplocked files in strict cache mode we need to write the data
......@@ -2648,11 +2662,13 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
* request comes - break it on the client to prevent reading
* an old data.
*/
cifs_invalidate_mapping(inode);
cifs_zap_mapping(inode);
cifs_dbg(FYI, "Set no oplock for inode=%p after a write operation\n",
inode);
cinode->oplock = 0;
}
out:
cifs_put_writer(cinode);
return written;
}
......@@ -2905,7 +2921,7 @@ cifs_iovec_read(struct file *file, const struct iovec *iov,
cifs_uncached_readv_complete);
if (!rdata) {
rc = -ENOMEM;
goto error;
break;
}
rc = cifs_read_allocate_pages(rdata, npages);
......@@ -3145,7 +3161,7 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
xid = get_xid();
if (!CIFS_CACHE_READ(CIFS_I(inode))) {
rc = cifs_invalidate_mapping(inode);
rc = cifs_zap_mapping(inode);
if (rc)
return rc;
}
......@@ -3302,6 +3318,9 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
/*
* Reads as many pages as possible from fscache. Returns -ENOBUFS
* immediately if the cookie is negative
*
* After this point, every page in the list might have PG_fscache set,
* so we will need to clean that up off of every page we don't use.
*/
rc = cifs_readpages_from_fscache(mapping->host, mapping, page_list,
&num_pages);
......@@ -3424,9 +3443,17 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
kref_put(&rdata->refcount, cifs_readdata_release);
}
/* Any pages that have been shown to fscache but didn't get added to
* the pagecache must be uncached before they get returned to the
* allocator.
*/
cifs_fscache_readpages_cancel(mapping->host, page_list);
return rc;
}
/*
* cifs_readpage_worker must be called with the page pinned
*/
static int cifs_readpage_worker(struct file *file, struct page *page,
loff_t *poffset)
{
......@@ -3438,7 +3465,6 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
if (rc == 0)
goto read_complete;
page_cache_get(page);
read_data = kmap(page);
/* for reads over a certain size could initiate async read ahead */
......@@ -3465,7 +3491,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
io_error:
kunmap(page);
page_cache_release(page);
unlock_page(page);
read_complete:
return rc;
......@@ -3490,8 +3516,6 @@ static int cifs_readpage(struct file *file, struct page *page)
rc = cifs_readpage_worker(file, page, &offset);
unlock_page(page);
free_xid(xid);
return rc;
}
......@@ -3545,6 +3569,7 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
int oncethru = 0;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
loff_t offset = pos & (PAGE_CACHE_SIZE - 1);
loff_t page_start = pos & PAGE_MASK;
......@@ -3554,6 +3579,7 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
cifs_dbg(FYI, "write_begin from %lld len %d\n", (long long)pos, len);
start:
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page) {
rc = -ENOMEM;
......@@ -3595,13 +3621,16 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
}
}
if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
if ((file->f_flags & O_ACCMODE) != O_WRONLY && !oncethru) {
/*
* might as well read a page, it is fast enough. If we get
* an error, we don't need to return it. cifs_write_end will
* do a sync write instead since PG_uptodate isn't set.
*/
cifs_readpage_worker(file, page, &page_start);
page_cache_release(page);
oncethru = 1;
goto start;
} else {
/* we could try using another file handle if there is one -
but how would we lock it to prevent close of that handle
......@@ -3650,6 +3679,13 @@ static int cifs_launder_page(struct page *page)
return rc;
}
static int
cifs_pending_writers_wait(void *unused)
{
schedule();
return 0;
}
void cifs_oplock_break(struct work_struct *work)
{
struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
......@@ -3657,8 +3693,15 @@ void cifs_oplock_break(struct work_struct *work)
struct inode *inode = cfile->dentry->d_inode;
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
int rc = 0;
wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS,
cifs_pending_writers_wait, TASK_UNINTERRUPTIBLE);
server->ops->downgrade_oplock(server, cinode,
test_bit(CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2, &cinode->flags));
if (!CIFS_CACHE_WRITE(cinode) && CIFS_CACHE_READ(cinode) &&
cifs_has_mand_locks(cinode)) {
cifs_dbg(FYI, "Reset oplock to None for inode=%p due to mand locks\n",
......@@ -3675,7 +3718,7 @@ void cifs_oplock_break(struct work_struct *work)
if (!CIFS_CACHE_READ(cinode)) {
rc = filemap_fdatawait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
cifs_invalidate_mapping(inode);
cifs_zap_mapping(inode);
}
cifs_dbg(FYI, "Oplock flush inode %p rc %d\n", inode, rc);
}
......@@ -3695,8 +3738,30 @@ void cifs_oplock_break(struct work_struct *work)
cinode);
cifs_dbg(FYI, "Oplock release rc = %d\n", rc);
}
cifs_done_oplock_break(cinode);
}
/*
* The presence of cifs_direct_io() in the address space ops vector
* allowes open() O_DIRECT flags which would have failed otherwise.
*
* In the non-cached mode (mount with cache=none), we shunt off direct read and write requests
* so this method should never be called.
*
* Direct IO is not yet supported in the cached mode.
*/
static ssize_t
cifs_direct_io(int rw, struct kiocb *iocb, const struct iovec *iov,
loff_t pos, unsigned long nr_segs)
{
/*
* FIXME
* Eventually need to support direct IO for non forcedirectio mounts
*/
return -EINVAL;
}
const struct address_space_operations cifs_addr_ops = {
.readpage = cifs_readpage,
.readpages = cifs_readpages,
......@@ -3706,6 +3771,7 @@ const struct address_space_operations cifs_addr_ops = {
.write_end = cifs_write_end,
.set_page_dirty = __set_page_dirty_nobuffers,
.releasepage = cifs_release_page,
.direct_IO = cifs_direct_io,
.invalidatepage = cifs_invalidate_page,
.launder_page = cifs_launder_page,
};
......
sources/centos70/fscache.c
View file @ 9d798057
......@@ -223,6 +223,13 @@ void __cifs_readpage_to_fscache(struct inode *inode, struct page *page)
fscache_uncache_page(CIFS_I(inode)->fscache, page);
}
void __cifs_fscache_readpages_cancel(struct inode *inode, struct list_head *pages)
{
cifs_dbg(FYI, "%s: (fsc: %p, i: %p)\n",
__func__, CIFS_I(inode)->fscache, inode);
fscache_readpages_cancel(CIFS_I(inode)->fscache, pages);
}
void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
{
struct cifsInodeInfo *cifsi = CIFS_I(inode);
......
sources/centos70/fscache.h
View file @ 9d798057
......@@ -54,6 +54,7 @@ extern int __cifs_readpages_from_fscache(struct inode *,
struct address_space *,
struct list_head *,
unsigned *);
extern void __cifs_fscache_readpages_cancel(struct inode *, struct list_head *);
extern void __cifs_readpage_to_fscache(struct inode *, struct page *);
......@@ -91,6 +92,13 @@ static inline void cifs_readpage_to_fscache(struct inode *inode,
__cifs_readpage_to_fscache(inode, page);
}
static inline void cifs_fscache_readpages_cancel(struct inode *inode,
struct list_head *pages)
{
if (CIFS_I(inode)->fscache)
return __cifs_fscache_readpages_cancel(inode, pages);
}
#else /* CONFIG_CIFS_FSCACHE */
static inline int cifs_fscache_register(void) { return 0; }
static inline void cifs_fscache_unregister(void) {}
......@@ -131,6 +139,11 @@ static inline int cifs_readpages_from_fscache(struct inode *inode,
static inline void cifs_readpage_to_fscache(struct inode *inode,
struct page *page) {}
static inline void cifs_fscache_readpages_cancel(struct inode *inode,
struct list_head *pages)
{
}
#endif /* CONFIG_CIFS_FSCACHE */
#endif /* _CIFS_FSCACHE_H */
sources/centos70/inode.c
View file @ 9d798057
......@@ -22,6 +22,7 @@
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/freezer.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
......@@ -70,8 +71,9 @@ static void cifs_set_ops(struct inode *inode)
#else /* NO DFS support, treat as a directory */
{
#endif
inode->i_op = &cifs_dir_inode_ops;
inode->i_op = &cifs_dir_inode_ops.ops;
inode->i_fop = &cifs_dir_ops;
inode->i_flags |= S_IOPS_WRAPPER;
}
break;
case S_IFLNK:
......@@ -117,7 +119,34 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n",
__func__, cifs_i->uniqueid);
cifs_i->invalid_mapping = true;
set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
}
/*
* copy nlink to the inode, unless it wasn't provided. Provide
* sane values if we don't have an existing one and none was provided
*/
static void
cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
{
/*
* if we're in a situation where we can't trust what we
* got from the server (readdir, some non-unix cases)
* fake reasonable values
*/
if (fattr->cf_flags & CIFS_FATTR_UNKNOWN_NLINK) {
/* only provide fake values on a new inode */
if (inode->i_state & I_NEW) {
if (fattr->cf_cifsattrs & ATTR_DIRECTORY)
set_nlink(inode, 2);
else
set_nlink(inode, 1);
}
return;
}
/* we trust the server, so update it */
set_nlink(inode, fattr->cf_nlink);
}
/* populate an inode with info from a cifs_fattr struct */
......@@ -134,7 +163,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
inode->i_mtime = fattr->cf_mtime;
inode->i_ctime = fattr->cf_ctime;
inode->i_rdev = fattr->cf_rdev;
set_nlink(inode, fattr->cf_nlink);
cifs_nlink_fattr_to_inode(inode, fattr);
inode->i_uid = fattr->cf_uid;
inode->i_gid = fattr->cf_gid;
......@@ -150,7 +179,10 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
else
cifs_i->time = jiffies;
cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING)
set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
else
clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
cifs_i->server_eof = fattr->cf_eof;
/*
......@@ -356,9 +388,10 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* check for Minshall+French symlinks */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
full_path);
if (tmprc)
cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc);
cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
}
if (*pinode == NULL) {
......@@ -376,18 +409,20 @@ int cifs_get_inode_info_unix(struct inode **pinode,
}
static int
cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
struct cifs_sb_info *cifs_sb, unsigned int xid)
{
int rc;
int oplock = 0;
__u16 netfid;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
struct cifs_fid fid;
struct cifs_open_parms oparms;
struct cifs_io_parms io_parms;
char buf[24];
unsigned int bytes_read;
char *pbuf;
int buf_type = CIFS_NO_BUFFER;
pbuf = buf;
......@@ -408,21 +443,30 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ,
FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
int buf_type = CIFS_NO_BUFFER;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc) {
cifs_put_tlink(tlink);
return rc;
}
/* Read header */
io_parms.netfid = netfid;
io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = 24;
rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf,
&buf_type);
rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
if ((rc == 0) && (bytes_read >= 8)) {
if (memcmp("IntxBLK", pbuf, 8) == 0) {
cifs_dbg(FYI, "Block device\n");
......@@ -462,8 +506,7 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
fattr->cf_dtype = DT_REG;
rc = -EOPNOTSUPP; /* or some unknown SFU type */
}
CIFSSMBClose(xid, tcon, netfid);
}
CIFSSMBClose(xid, tcon, fid.netfid);
cifs_put_tlink(tlink);
return rc;
}
......@@ -490,10 +533,15 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS",
ea_value, 4 /* size of buf */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (tcon->ses->server->ops->query_all_EAs == NULL) {
cifs_put_tlink(tlink);
return -EOPNOTSUPP;
}
rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path,
"SETFILEBITS", ea_value, 4 /* size of buf */,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
cifs_put_tlink(tlink);
if (rc < 0)
return (int)rc;
......@@ -515,7 +563,8 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
/* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
static void
cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
struct cifs_sb_info *cifs_sb, bool adjust_tz)
struct cifs_sb_info *cifs_sb, bool adjust_tz,
bool symlink)
{
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
......@@ -541,18 +590,20 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
fattr->cf_createtime = le64_to_cpu(info->CreationTime);
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
if (symlink) {
fattr->cf_mode = S_IFLNK;
fattr->cf_dtype = DT_LNK;
} else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
fattr->cf_dtype = DT_DIR;
/*
* Server can return wrong NumberOfLinks value for directories
* when Unix extensions are disabled - fake it.
*/
fattr->cf_nlink = 2;
} else if (fattr->cf_cifsattrs & ATTR_REPARSE) {
fattr->cf_mode = S_IFLNK;
fattr->cf_dtype = DT_LNK;
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
if (!tcon->unix_ext)
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
} else {
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
fattr->cf_dtype = DT_REG;
......@@ -561,11 +612,15 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
if (fattr->cf_cifsattrs & ATTR_READONLY)
fattr->cf_mode &= ~(S_IWUGO);
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
if (fattr->cf_nlink < 1) {
cifs_dbg(1, "replacing bogus file nlink value %u\n",
/*
* Don't accept zero nlink from non-unix servers unless
* delete is pending. Instead mark it as unknown.
*/
if ((fattr->cf_nlink < 1) && !tcon->unix_ext &&
!info->DeletePending) {
cifs_dbg(1, "bogus file nlink value %u\n",
fattr->cf_nlink);
fattr->cf_nlink = 1;
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
}
}
......@@ -593,7 +648,8 @@ cifs_get_file_info(struct file *filp)
rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
switch (rc) {
case 0:
cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false,
false);
break;
case -EREMOTE:
cifs_create_dfs_fattr(&fattr, inode->i_sb);
......@@ -627,7 +683,7 @@ cgfi_exit:
int
cifs_get_inode_info(struct inode **inode, const char *full_path,
FILE_ALL_INFO *data, struct super_block *sb, int xid,
const __u16 *fid)
const struct cifs_fid *fid)
{
bool validinum = false;
__u16 srchflgs;
......@@ -640,6 +696,7 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
bool adjust_tz = false;
struct cifs_fattr fattr;
struct cifs_search_info *srchinf = NULL;
bool symlink = false;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
......@@ -669,12 +726,12 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
}
data = (FILE_ALL_INFO *)buf;
rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
data, &adjust_tz);
data, &adjust_tz, &symlink);
}
if (!rc) {
cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *)data, cifs_sb,
adjust_tz);
cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz,
symlink);
} else if (rc == -EREMOTE) {
cifs_create_dfs_fattr(&fattr, sb);
rc = 0;
......@@ -763,9 +820,10 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
/* check for Minshall+French symlinks */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
full_path);
if (tmprc)
cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc);
cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
}
if (!*inode) {
......@@ -994,7 +1052,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
{
int oplock = 0;
int rc;
__u16 netfid;
struct cifs_fid fid;
struct cifs_open_parms oparms;
struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
......@@ -1017,10 +1076,17 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
goto out;
}
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
DELETE|FILE_WRITE_ATTRIBUTES, FILE_SHARE_ALL, CREATE_NOT_DIR,
&netfid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc != 0)
goto out;
......@@ -1041,7 +1107,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
goto out_close;
}
info_buf->Attributes = cpu_to_le32(dosattr);
rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
current->tgid);
/* although we would like to mark the file hidden
if that fails we will still try to rename it */
......@@ -1052,7 +1118,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
}
/* rename the file */
rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0) {
......@@ -1061,8 +1128,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
}
/* try to set DELETE_ON_CLOSE */
if (!cifsInode->delete_pending) {
rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
current->tgid);
/*
* some samba versions return -ENOENT when we try to set the
......@@ -1078,11 +1145,11 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
rc = -ETXTBSY;
goto undo_rename;
}
cifsInode->delete_pending = true;
set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
}
out_close:
CIFSSMBClose(xid, tcon, netfid);
CIFSSMBClose(xid, tcon, fid.netfid);
out:
kfree(info_buf);
cifs_put_tlink(tlink);
......@@ -1094,13 +1161,13 @@ out:
* them anyway.
*/
undo_rename:
CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
undo_setattr:
if (dosattr != origattr) {
info_buf->Attributes = cpu_to_le32(origattr);
if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
current->tgid))
cifsInode->cifsAttrs = origattr;
}
......@@ -1513,7 +1580,8 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
struct tcon_link *tlink;
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
__u16 srcfid;
struct cifs_fid fid;
struct cifs_open_parms oparms;
int oplock, rc;
tlink = cifs_sb_tlink(cifs_sb);
......@@ -1540,17 +1608,24 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
if (to_dentry->d_parent != from_dentry->d_parent)
goto do_rename_exit;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
/* open the file to be renamed -- we need DELETE perms */
rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE, FILE_SHARE_ALL,
CREATE_NOT_DIR, &srcfid, &oplock, NULL,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.desired_access = DELETE;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = from_path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc == 0) {
rc = CIFSSMBRenameOpenFile(xid, tcon, srcfid,
rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
(const char *) to_dentry->d_name.name,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
CIFSSMBClose(xid, tcon, srcfid);
CIFSSMBClose(xid, tcon, fid.netfid);
}
do_rename_exit:
cifs_put_tlink(tlink);
......@@ -1558,8 +1633,9 @@ do_rename_exit:
}
int
cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
struct inode *target_dir, struct dentry *target_dentry)
cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
struct inode *target_dir, struct dentry *target_dentry,
unsigned int flags)
{
char *from_name = NULL;
char *to_name = NULL;
......@@ -1571,6 +1647,9 @@ cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
unsigned int xid;
int rc, tmprc;
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
cifs_sb = CIFS_SB(source_dir->i_sb);
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
......@@ -1598,6 +1677,12 @@ cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
to_name);
/*
* No-replace is the natural behavior for CIFS, so skip unlink hacks.
*/
if (flags & RENAME_NOREPLACE)
goto cifs_rename_exit;
if (rc == -EEXIST && tcon->unix_ext) {
/*
* Are src and dst hardlinks of same inode? We can only tell
......@@ -1672,6 +1757,9 @@ cifs_inode_needs_reval(struct inode *inode)
if (cifs_i->time == 0)
return true;
if (!cifs_sb->actimeo)
return true;
if (!time_in_range(jiffies, cifs_i->time,
cifs_i->time + cifs_sb->actimeo))
return true;
......@@ -1691,23 +1779,62 @@ int
cifs_invalidate_mapping(struct inode *inode)
{
int rc = 0;
struct cifsInodeInfo *cifs_i = CIFS_I(inode);
cifs_i->invalid_mapping = false;
if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
rc = invalidate_inode_pages2(inode->i_mapping);
if (rc) {
if (rc)
cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
__func__, inode);
cifs_i->invalid_mapping = true;
}
}
cifs_fscache_reset_inode_cookie(inode);
return rc;
}
/**
* cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
* @word: long word containing the bit lock
*/
static int
cifs_wait_bit_killable(void *word)
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
freezable_schedule_unsafe();
return 0;
}
int
cifs_revalidate_mapping(struct inode *inode)
{
int rc;
unsigned long *flags = &CIFS_I(inode)->flags;
rc = wait_on_bit_lock(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
TASK_KILLABLE);
if (rc)
return rc;
if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
rc = cifs_invalidate_mapping(inode);
if (rc)
set_bit(CIFS_INO_INVALID_MAPPING, flags);
}
clear_bit_unlock(CIFS_INO_LOCK, flags);
smp_mb__after_clear_bit();
wake_up_bit(flags, CIFS_INO_LOCK);
return rc;
}
int
cifs_zap_mapping(struct inode *inode)
{
set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
return cifs_revalidate_mapping(inode);
}
int cifs_revalidate_file_attr(struct file *filp)
{
int rc = 0;
......@@ -1774,9 +1901,7 @@ int cifs_revalidate_file(struct file *filp)
if (rc)
return rc;
if (CIFS_I(inode)->invalid_mapping)
rc = cifs_invalidate_mapping(inode);
return rc;
return cifs_revalidate_mapping(inode);
}
/* revalidate a dentry's inode attributes */
......@@ -1789,9 +1914,7 @@ int cifs_revalidate_dentry(struct dentry *dentry)
if (rc)
return rc;
if (CIFS_I(inode)->invalid_mapping)
rc = cifs_invalidate_mapping(inode);
return rc;
return cifs_revalidate_mapping(inode);
}
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
......@@ -1858,14 +1981,11 @@ static int cifs_truncate_page(struct address_space *mapping, loff_t from)
static void cifs_setsize(struct inode *inode, loff_t offset)
{
loff_t oldsize;
spin_lock(&inode->i_lock);
oldsize = inode->i_size;
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
truncate_pagecache(inode, oldsize, offset);
truncate_pagecache(inode, offset);
}
static int
......
sources/centos70/ioctl.c
View file @ 9d798057
......@@ -3,7 +3,7 @@
*
* vfs operations that deal with io control
*
* Copyright (C) International Business Machines Corp., 2005,2007
* Copyright (C) International Business Machines Corp., 2005,2013
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
......@@ -22,25 +22,121 @@
*/
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/mount.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
#define CIFS_IOCTL_MAGIC 0xCF
#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int)
static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
unsigned long srcfd, u64 off, u64 len, u64 destoff)
{
int rc;
struct cifsFileInfo *smb_file_target = dst_file->private_data;
struct inode *target_inode = file_inode(dst_file);
struct cifs_tcon *target_tcon;
struct fd src_file;
struct cifsFileInfo *smb_file_src;
struct inode *src_inode;
struct cifs_tcon *src_tcon;
cifs_dbg(FYI, "ioctl clone range\n");
/* the destination must be opened for writing */
if (!(dst_file->f_mode & FMODE_WRITE)) {
cifs_dbg(FYI, "file target not open for write\n");
return -EINVAL;
}
/* check if target volume is readonly and take reference */
rc = mnt_want_write_file(dst_file);
if (rc) {
cifs_dbg(FYI, "mnt_want_write failed with rc %d\n", rc);
return rc;
}
src_file = fdget(srcfd);
if (!src_file.file) {
rc = -EBADF;
goto out_drop_write;
}
if ((!src_file.file->private_data) || (!dst_file->private_data)) {
rc = -EBADF;
cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
goto out_fput;
}
rc = -EXDEV;
smb_file_target = dst_file->private_data;
smb_file_src = src_file.file->private_data;
src_tcon = tlink_tcon(smb_file_src->tlink);
target_tcon = tlink_tcon(smb_file_target->tlink);
/* check if source and target are on same tree connection */
if (src_tcon != target_tcon) {
cifs_dbg(VFS, "file copy src and target on different volume\n");
goto out_fput;
}
src_inode = file_inode(src_file.file);
rc = -EINVAL;
if (S_ISDIR(src_inode->i_mode))
goto out_fput;
/*
* Note: cifs case is easier than btrfs since server responsible for
* checks for proper open modes and file type and if it wants
* server could even support copy of range where source = target
*/
lock_two_nondirectories(target_inode, src_inode);
/* determine range to clone */
rc = -EINVAL;
if (off + len > src_inode->i_size || off + len < off)
goto out_unlock;
if (len == 0)
len = src_inode->i_size - off;
cifs_dbg(FYI, "about to flush pages\n");
/* should we flush first and last page first */
truncate_inode_pages_range(&target_inode->i_data, destoff,
PAGE_CACHE_ALIGN(destoff + len)-1);
if (target_tcon->ses->server->ops->clone_range)
rc = target_tcon->ses->server->ops->clone_range(xid,
smb_file_src, smb_file_target, off, len, destoff);
/* force revalidate of size and timestamps of target file now
that target is updated on the server */
CIFS_I(target_inode)->time = 0;
out_unlock:
/* although unlocking in the reverse order from locking is not
strictly necessary here it is a little cleaner to be consistent */
unlock_two_nondirectories(src_inode, target_inode);
out_fput:
fdput(src_file);
out_drop_write:
mnt_drop_write_file(dst_file);
return rc;
}
long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
{
struct inode *inode = file_inode(filep);
int rc = -ENOTTY; /* strange error - but the precedent */
unsigned int xid;
struct cifs_sb_info *cifs_sb;
#ifdef CONFIG_CIFS_POSIX
struct cifsFileInfo *pSMBFile = filep->private_data;
struct cifs_tcon *tcon;
__u64 ExtAttrBits = 0;
__u64 ExtAttrMask = 0;
__u64 caps;
#endif /* CONFIG_CIFS_POSIX */
xid = get_xid();
......@@ -49,13 +145,14 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
cifs_sb = CIFS_SB(inode->i_sb);
switch (command) {
#ifdef CONFIG_CIFS_POSIX
case FS_IOC_GETFLAGS:
if (pSMBFile == NULL)
break;
tcon = tlink_tcon(pSMBFile->tlink);
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
#ifdef CONFIG_CIFS_POSIX
if (CIFS_UNIX_EXTATTR_CAP & caps) {
__u64 ExtAttrMask = 0;
rc = CIFSGetExtAttr(xid, tcon,
pSMBFile->fid.netfid,
&ExtAttrBits, &ExtAttrMask);
......@@ -63,29 +160,53 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
rc = put_user(ExtAttrBits &
FS_FL_USER_VISIBLE,
(int __user *)arg);
if (rc != EOPNOTSUPP)
break;
}
#endif /* CONFIG_CIFS_POSIX */
rc = 0;
if (CIFS_I(inode)->cifsAttrs & ATTR_COMPRESSED) {
/* add in the compressed bit */
ExtAttrBits = FS_COMPR_FL;
rc = put_user(ExtAttrBits & FS_FL_USER_VISIBLE,
(int __user *)arg);
}
break;
case FS_IOC_SETFLAGS:
if (pSMBFile == NULL)
break;
tcon = tlink_tcon(pSMBFile->tlink);
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
if (CIFS_UNIX_EXTATTR_CAP & caps) {
if (get_user(ExtAttrBits, (int __user *)arg)) {
rc = -EFAULT;
break;
}
/*
* rc = CIFSGetExtAttr(xid, tcon,
* if (CIFS_UNIX_EXTATTR_CAP & caps)
* rc = CIFSSetExtAttr(xid, tcon,
* pSMBFile->fid.netfid,
* extAttrBits,
* &ExtAttrMask);
* if (rc != EOPNOTSUPP)
* break;
*/
/* Currently only flag we can set is compressed flag */
if ((ExtAttrBits & FS_COMPR_FL) == 0)
break;
/* Try to set compress flag */
if (tcon->ses->server->ops->set_compression) {
rc = tcon->ses->server->ops->set_compression(
xid, tcon, pSMBFile);
cifs_dbg(FYI, "set compress flag rc %d\n", rc);
}
cifs_dbg(FYI, "set flags not implemented yet\n");
break;
#endif /* CONFIG_CIFS_POSIX */
case CIFS_IOC_COPYCHUNK_FILE:
rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0);
break;
default:
cifs_dbg(FYI, "unsupported ioctl\n");
break;
......
sources/centos70/link.c
View file @ 9d798057
......@@ -29,6 +29,10 @@
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
/*
* M-F Symlink Functions - Begin
*/
#define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
#define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
#define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
......@@ -91,9 +95,7 @@ symlink_hash_err:
}
static int
CIFSParseMFSymlink(const u8 *buf,
unsigned int buf_len,
unsigned int *_link_len,
parse_mf_symlink(const u8 *buf, unsigned int buf_len, unsigned int *_link_len,
char **_link_str)
{
int rc;
......@@ -137,7 +139,7 @@ CIFSParseMFSymlink(const u8 *buf,
}
static int
CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
{
int rc;
unsigned int link_len;
......@@ -180,214 +182,118 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
return 0;
}
bool
couldbe_mf_symlink(const struct cifs_fattr *fattr)
{
if (!S_ISREG(fattr->cf_mode))
/* it's not a symlink */
return false;
if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
/* it's not a symlink */
return false;
return true;
}
static int
CIFSCreateMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
const char *fromName, const char *toName,
struct cifs_sb_info *cifs_sb)
create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *fromName,
const char *toName)
{
int rc;
int oplock = 0;
int remap;
int create_options = CREATE_NOT_DIR;
__u16 netfid = 0;
u8 *buf;
unsigned int bytes_written = 0;
struct cifs_io_parms io_parms;
struct nls_table *nls_codepage;
nls_codepage = cifs_sb->local_nls;
remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
if (rc != 0) {
kfree(buf);
return rc;
}
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
if (rc)
goto out;
rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,
FILE_SHARE_ALL, create_options, &netfid, &oplock, NULL,
nls_codepage, remap);
if (rc != 0) {
kfree(buf);
return rc;
}
if (tcon->ses->server->ops->create_mf_symlink)
rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon,
cifs_sb, fromName, buf, &bytes_written);
else
rc = -EOPNOTSUPP;
io_parms.netfid = netfid;
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
if (rc)
goto out;
rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0);
CIFSSMBClose(xid, tcon, netfid);
if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
rc = -EIO;
out:
kfree(buf);
if (rc != 0)
return rc;
if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
return -EIO;
return 0;
}
static int
CIFSQueryMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
const unsigned char *searchName, char **symlinkinfo,
const struct nls_table *nls_codepage, int remap)
query_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const unsigned char *path,
char **symlinkinfo)
{
int rc;
int oplock = 0;
__u16 netfid = 0;
u8 *buf;
char *pbuf;
unsigned int bytes_read = 0;
int buf_type = CIFS_NO_BUFFER;
u8 *buf = NULL;
unsigned int link_len = 0;
struct cifs_io_parms io_parms;
FILE_ALL_INFO file_info;
rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
&file_info, nls_codepage, remap);
if (rc != 0)
return rc;
if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
CIFSSMBClose(xid, tcon, netfid);
/* it's not a symlink */
return -EINVAL;
}
unsigned int bytes_read = 0;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pbuf = buf;
io_parms.netfid = netfid;
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
CIFSSMBClose(xid, tcon, netfid);
if (rc != 0) {
kfree(buf);
return rc;
}
rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, symlinkinfo);
kfree(buf);
if (rc != 0)
return rc;
return 0;
}
bool
CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr)
{
if (!(fattr->cf_mode & S_IFREG))
/* it's not a symlink */
return false;
if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
/* it's not a symlink */
return false;
return true;
}
int
open_query_close_cifs_symlink(const unsigned char *path, char *pbuf,
unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb,
unsigned int xid)
{
int rc;
int oplock = 0;
__u16 netfid = 0;
struct tcon_link *tlink;
struct cifs_tcon *ptcon;
struct cifs_io_parms io_parms;
int buf_type = CIFS_NO_BUFFER;
FILE_ALL_INFO file_info;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
ptcon = tlink_tcon(tlink);
if (tcon->ses->server->ops->query_mf_symlink)
rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
cifs_sb, path, buf, &bytes_read);
else
rc = -ENOSYS;
rc = CIFSSMBOpen(xid, ptcon, path, FILE_OPEN, GENERIC_READ,
FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
&file_info, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0) {
cifs_put_tlink(tlink);
return rc;
}
if (rc)
goto out;
if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
CIFSSMBClose(xid, ptcon, netfid);
cifs_put_tlink(tlink);
/* it's not a symlink */
return rc;
if (bytes_read == 0) { /* not a symlink */
rc = -EINVAL;
goto out;
}
io_parms.netfid = netfid;
io_parms.pid = current->tgid;
io_parms.tcon = ptcon;
io_parms.offset = 0;
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
CIFSSMBClose(xid, ptcon, netfid);
cifs_put_tlink(tlink);
rc = parse_mf_symlink(buf, bytes_read, &link_len, symlinkinfo);
out:
kfree(buf);
return rc;
}
int
CIFSCheckMFSymlink(struct cifs_fattr *fattr,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, unsigned int xid)
check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
const unsigned char *path)
{
int rc = 0;
int rc;
u8 *buf = NULL;
unsigned int link_len = 0;
unsigned int bytes_read = 0;
struct cifs_tcon *ptcon;
if (!CIFSCouldBeMFSymlink(fattr))
if (!couldbe_mf_symlink(fattr))
/* it's not a symlink */
return 0;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf) {
rc = -ENOMEM;
goto out;
}
if (!buf)
return -ENOMEM;
ptcon = tlink_tcon(cifs_sb_tlink(cifs_sb));
if ((ptcon->ses) && (ptcon->ses->server->ops->query_mf_symlink))
rc = ptcon->ses->server->ops->query_mf_symlink(path, buf,
&bytes_read, cifs_sb, xid);
if (tcon->ses->server->ops->query_mf_symlink)
rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
cifs_sb, path, buf, &bytes_read);
else
goto out;
rc = -ENOSYS;
if (rc != 0)
if (rc)
goto out;
if (bytes_read == 0) /* not a symlink */
goto out;
rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, NULL);
rc = parse_mf_symlink(buf, bytes_read, &link_len, NULL);
if (rc == -EINVAL) {
/* it's not a symlink */
rc = 0;
......@@ -407,6 +313,97 @@ out:
return rc;
}
/*
* SMB 1.0 Protocol specific functions
*/
int
cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const unsigned char *path,
char *pbuf, unsigned int *pbytes_read)
{
int rc;
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
struct cifs_io_parms io_parms;
int buf_type = CIFS_NO_BUFFER;
FILE_ALL_INFO file_info;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, &file_info);
if (rc)
return rc;
if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE))
/* it's not a symlink */
goto out;
io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
out:
CIFSSMBClose(xid, tcon, fid.netfid);
return rc;
}
int
cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const unsigned char *path,
char *pbuf, unsigned int *pbytes_written)
{
int rc;
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
struct cifs_io_parms io_parms;
int create_options = CREATE_NOT_DIR;
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = create_options;
oparms.disposition = FILE_CREATE;
oparms.path = path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc)
return rc;
io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0);
CIFSSMBClose(xid, tcon, fid.netfid);
return rc;
}
/*
* M-F Symlink Functions - End
*/
int
cifs_hardlink(struct dentry *old_file, struct inode *inode,
struct dentry *direntry)
......@@ -442,8 +439,10 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
CIFS_MOUNT_MAP_SPECIAL_CHR);
else {
server = tcon->ses->server;
if (!server->ops->create_hardlink)
return -ENOSYS;
if (!server->ops->create_hardlink) {
rc = -ENOSYS;
goto cifs_hl_exit;
}
rc = server->ops->create_hardlink(xid, tcon, from_name, to_name,
cifs_sb);
if ((rc == -EIO) || (rc == -EINVAL))
......@@ -534,10 +533,8 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
* and fallback to UNIX Extensions Symlinks.
*/
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
&target_path);
if (rc != 0 && server->ops->query_symlink)
rc = server->ops->query_symlink(xid, tcon, full_path,
......@@ -588,8 +585,7 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
/* BB what if DFS and this volume is on different share? BB */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
cifs_sb);
rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname);
else if (pTcon->unix_ext)
rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
cifs_sb->local_nls);
......@@ -618,10 +614,3 @@ symlink_exit:
free_xid(xid);
return rc;
}
void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
{
char *p = nd_get_link(nd);
if (!IS_ERR(p))
kfree(p);
}
sources/centos70/misc.c
View file @ 9d798057
......@@ -278,7 +278,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
static int
check_smb_hdr(struct smb_hdr *smb, __u16 mid)
check_smb_hdr(struct smb_hdr *smb)
{
/* does it have the right SMB "signature" ? */
if (*(__le32 *) smb->Protocol != cpu_to_le32(0x424d53ff)) {
......@@ -287,13 +287,6 @@ check_smb_hdr(struct smb_hdr *smb, __u16 mid)
return 1;
}
/* Make sure that message ids match */
if (mid != smb->Mid) {
cifs_dbg(VFS, "Mids do not match. received=%u expected=%u\n",
smb->Mid, mid);
return 1;
}
/* if it's a response then accept */
if (smb->Flags & SMBFLG_RESPONSE)
return 0;
......@@ -302,7 +295,8 @@ check_smb_hdr(struct smb_hdr *smb, __u16 mid)
if (smb->Command == SMB_COM_LOCKING_ANDX)
return 0;
cifs_dbg(VFS, "Server sent request, not response. mid=%u\n", smb->Mid);
cifs_dbg(VFS, "Server sent request, not response. mid=%u\n",
get_mid(smb));
return 1;
}
......@@ -310,7 +304,6 @@ int
checkSMB(char *buf, unsigned int total_read)
{
struct smb_hdr *smb = (struct smb_hdr *)buf;
__u16 mid = smb->Mid;
__u32 rfclen = be32_to_cpu(smb->smb_buf_length);
__u32 clc_len; /* calculated length */
cifs_dbg(FYI, "checkSMB Length: 0x%x, smb_buf_length: 0x%x\n",
......@@ -348,7 +341,7 @@ checkSMB(char *buf, unsigned int total_read)
}
/* otherwise, there is enough to get to the BCC */
if (check_smb_hdr(smb, mid))
if (check_smb_hdr(smb))
return -EIO;
clc_len = smbCalcSize(smb);
......@@ -359,6 +352,7 @@ checkSMB(char *buf, unsigned int total_read)
}
if (4 + rfclen != clc_len) {
__u16 mid = get_mid(smb);
/* check if bcc wrapped around for large read responses */
if ((rfclen > 64 * 1024) && (rfclen > clc_len)) {
/* check if lengths match mod 64K */
......@@ -366,11 +360,11 @@ checkSMB(char *buf, unsigned int total_read)
return 0; /* bcc wrapped */
}
cifs_dbg(FYI, "Calculated size %u vs length %u mismatch for mid=%u\n",
clc_len, 4 + rfclen, smb->Mid);
clc_len, 4 + rfclen, mid);
if (4 + rfclen < clc_len) {
cifs_dbg(VFS, "RFC1001 size %u smaller than SMB for mid=%u\n",
rfclen, smb->Mid);
rfclen, mid);
return -EIO;
} else if (rfclen > clc_len + 512) {
/*
......@@ -383,7 +377,7 @@ checkSMB(char *buf, unsigned int total_read)
* data to 512 bytes.
*/
cifs_dbg(VFS, "RFC1001 size %u more than 512 bytes larger than SMB for mid=%u\n",
rfclen, smb->Mid);
rfclen, mid);
return -EIO;
}
}
......@@ -472,8 +466,22 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
cifs_dbg(FYI, "file id match, oplock break\n");
pCifsInode = CIFS_I(netfile->dentry->d_inode);
cifs_set_oplock_level(pCifsInode,
pSMB->OplockLevel ? OPLOCK_READ : 0);
set_bit(CIFS_INODE_PENDING_OPLOCK_BREAK,
&pCifsInode->flags);
/*
* Set flag if the server downgrades the oplock
* to L2 else clear.
*/
if (pSMB->OplockLevel)
set_bit(
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&pCifsInode->flags);
else
clear_bit(
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&pCifsInode->flags);
queue_work(cifsiod_wq,
&netfile->oplock_break);
netfile->oplock_break_cancelled = false;
......@@ -557,6 +565,62 @@ void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
cinode->oplock = 0;
}
static int
cifs_oplock_break_wait(void *unused)
{
schedule();
return signal_pending(current) ? -ERESTARTSYS : 0;
}
/*
* We wait for oplock breaks to be processed before we attempt to perform
* writes.
*/
int cifs_get_writer(struct cifsInodeInfo *cinode)
{
int rc;
start:
rc = wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_OPLOCK_BREAK,
cifs_oplock_break_wait, TASK_KILLABLE);
if (rc)
return rc;
spin_lock(&cinode->writers_lock);
if (!cinode->writers)
set_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
cinode->writers++;
/* Check to see if we have started servicing an oplock break */
if (test_bit(CIFS_INODE_PENDING_OPLOCK_BREAK, &cinode->flags)) {
cinode->writers--;
if (cinode->writers == 0) {
clear_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS);
}
spin_unlock(&cinode->writers_lock);
goto start;
}
spin_unlock(&cinode->writers_lock);
return 0;
}
void cifs_put_writer(struct cifsInodeInfo *cinode)
{
spin_lock(&cinode->writers_lock);
cinode->writers--;
if (cinode->writers == 0) {
clear_bit(CIFS_INODE_PENDING_WRITERS, &cinode->flags);
wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS);
}
spin_unlock(&cinode->writers_lock);
}
void cifs_done_oplock_break(struct cifsInodeInfo *cinode)
{
clear_bit(CIFS_INODE_PENDING_OPLOCK_BREAK, &cinode->flags);
wake_up_bit(&cinode->flags, CIFS_INODE_PENDING_OPLOCK_BREAK);
}
bool
backup_cred(struct cifs_sb_info *cifs_sb)
{
......
sources/centos70/netmisc.c
View file @ 9d798057
......@@ -51,7 +51,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
{ERRnoaccess, -EACCES},
{ERRbadfid, -EBADF},
{ERRbadmcb, -EIO},
{ERRnomem, -ENOMEM},
{ERRnomem, -EREMOTEIO},
{ERRbadmem, -EFAULT},
{ERRbadenv, -EFAULT},
{ERRbadformat, -EINVAL},
......@@ -780,7 +780,9 @@ static const struct {
ERRDOS, ERRnoaccess, 0xc0000290}, {
ERRDOS, ERRbadfunc, 0xc000029c}, {
ERRDOS, ERRsymlink, NT_STATUS_STOPPED_ON_SYMLINK}, {
ERRDOS, ERRinvlevel, 0x007c0001}, };
ERRDOS, ERRinvlevel, 0x007c0001}, {
0, 0, 0 }
};
/*****************************************************************************
Print an error message from the status code
......@@ -793,7 +795,7 @@ cifs_print_status(__u32 status_code)
while (nt_errs[idx].nt_errstr != NULL) {
if (((nt_errs[idx].nt_errcode) & 0xFFFFFF) ==
(status_code & 0xFFFFFF)) {
printk(KERN_NOTICE "Status code returned 0x%08x %s\n",
pr_notice("Status code returned 0x%08x %s\n",
status_code, nt_errs[idx].nt_errstr);
}
idx++;
......@@ -939,8 +941,9 @@ cifs_UnixTimeToNT(struct timespec t)
return (u64) t.tv_sec * 10000000 + t.tv_nsec/100 + NTFS_TIME_OFFSET;
}
static int total_days_of_prev_months[] =
{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
static const int total_days_of_prev_months[] = {
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
};
struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
{
......
sources/centos70/readdir.c
View file @ 9d798057
......@@ -134,22 +134,6 @@ out:
dput(dentry);
}
/*
* Is it possible that this directory might turn out to be a DFS referral
* once we go to try and use it?
*/
static bool
cifs_dfs_is_possible(struct cifs_sb_info *cifs_sb)
{
#ifdef CONFIG_CIFS_DFS_UPCALL
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
return true;
#endif
return false;
}
static void
cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
{
......@@ -159,27 +143,22 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
fattr->cf_dtype = DT_DIR;
/*
* Windows CIFS servers generally make DFS referrals look
* like directories in FIND_* responses with the reparse
* attribute flag also set (since DFS junctions are
* reparse points). We must revalidate at least these
* directory inodes before trying to use them (if
* they are DFS we will get PATH_NOT_COVERED back
* when queried directly and can then try to connect
* to the DFS target)
*/
if (cifs_dfs_is_possible(cifs_sb) &&
(fattr->cf_cifsattrs & ATTR_REPARSE))
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
} else if (fattr->cf_cifsattrs & ATTR_REPARSE) {
fattr->cf_mode = S_IFLNK;
fattr->cf_dtype = DT_LNK;
} else {
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
fattr->cf_dtype = DT_REG;
}
/*
* We need to revalidate it further to make a decision about whether it
* is a symbolic link, DFS referral or a reparse point with a direct
* access like junctions, deduplicated files, NFS symlinks.
*/
if (fattr->cf_cifsattrs & ATTR_REPARSE)
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
/* non-unix readdir doesn't provide nlink */
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
if (fattr->cf_cifsattrs & ATTR_READONLY)
fattr->cf_mode &= ~S_IWUGO;
......@@ -769,7 +748,7 @@ static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir,
}
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) &&
CIFSCouldBeMFSymlink(&fattr))
couldbe_mf_symlink(&fattr))
/*
* trying to get the type and mode can be slow,
* so just call those regular files for now, and mark
......
sources/centos70/sess.c
View file @ 9d798057
......@@ -500,9 +500,9 @@ select_sectype(struct TCP_Server_Info *server, enum securityEnum requested)
return NTLMv2;
if (global_secflags & CIFSSEC_MAY_NTLM)
return NTLM;
/* Fallthrough */
default:
return Unspecified;
/* Fallthrough to attempt LANMAN authentication next */
break;
}
case CIFS_NEGFLAVOR_LANMAN:
switch (requested) {
......
sources/centos70/smb1ops.c
View file @ 9d798057
......@@ -67,7 +67,7 @@ send_nt_cancel(struct TCP_Server_Info *server, void *buf,
mutex_unlock(&server->srv_mutex);
cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
in_buf->Mid, rc);
get_mid(in_buf), rc);
return rc;
}
......@@ -101,7 +101,7 @@ cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
spin_lock(&GlobalMid_Lock);
list_for_each_entry(mid, &server->pending_mid_q, qhead) {
if (mid->mid == buf->Mid &&
if (compare_mid(mid->mid, buf) &&
mid->mid_state == MID_REQUEST_SUBMITTED &&
le16_to_cpu(mid->command) == buf->Command) {
spin_unlock(&GlobalMid_Lock);
......@@ -372,6 +372,16 @@ coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
return 0;
}
static void
cifs_downgrade_oplock(struct TCP_Server_Info *server,
struct cifsInodeInfo *cinode, bool set_level2)
{
if (set_level2)
cifs_set_oplock_level(cinode, OPLOCK_READ);
else
cifs_set_oplock_level(cinode, 0);
}
static bool
cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
char *buf, int malformed)
......@@ -534,10 +544,12 @@ cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
static int
cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path,
FILE_ALL_INFO *data, bool *adjustTZ)
FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
{
int rc;
*symlink = false;
/* could do find first instead but this returns more info */
rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
......@@ -554,6 +566,31 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
CIFS_MOUNT_MAP_SPECIAL_CHR);
*adjustTZ = true;
}
if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
int tmprc;
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = 0;
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
oparms.reconnect = false;
/* Need to check if this is a symbolic link or not */
tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
if (tmprc == -EOPNOTSUPP)
*symlink = true;
else
CIFSSMBClose(xid, tcon, fid.netfid);
}
return rc;
}
......@@ -686,13 +723,7 @@ cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
oparms->cifs_sb->local_nls,
oparms->cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
return CIFSSMBOpen(xid, oparms->tcon, oparms->path,
oparms->disposition, oparms->desired_access,
oparms->share_access, oparms->create_options,
&oparms->fid->netfid, oplock, buf,
oparms->cifs_sb->local_nls,
oparms->cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
return CIFS_open(xid, oparms, oplock, buf);
}
static void
......@@ -743,8 +774,9 @@ smb_set_file_info(struct inode *inode, const char *full_path,
{
int oplock = 0;
int rc;
__u16 netfid;
__u32 netpid;
struct cifs_fid fid;
struct cifs_open_parms oparms;
struct cifsFileInfo *open_file;
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
......@@ -754,7 +786,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
/* if the file is already open for write, just use that fileid */
open_file = find_writable_file(cinode, true);
if (open_file) {
netfid = open_file->fid.netfid;
fid.netfid = open_file->fid.netfid;
netpid = open_file->pid;
tcon = tlink_tcon(open_file->tlink);
goto set_via_filehandle;
......@@ -778,13 +810,18 @@ smb_set_file_info(struct inode *inode, const char *full_path,
goto out;
}
cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, FILE_SHARE_ALL,
CREATE_NOT_DIR, &netfid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
oparms.reconnect = false;
cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc != 0) {
if (rc == -EIO)
rc = -EINVAL;
......@@ -794,12 +831,12 @@ smb_set_file_info(struct inode *inode, const char *full_path,
netpid = current->tgid;
set_via_filehandle:
rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
if (!rc)
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
if (open_file == NULL)
CIFSSMBClose(xid, tcon, netfid);
CIFSSMBClose(xid, tcon, fid.netfid);
else
cifsFileInfo_put(open_file);
out:
......@@ -809,6 +846,13 @@ out:
}
static int
cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile)
{
return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
}
static int
cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
const char *path, struct cifs_sb_info *cifs_sb,
struct cifs_fid *fid, __u16 search_flags,
......@@ -917,7 +961,8 @@ cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
{
int rc;
int oplock = 0;
__u16 netfid;
struct cifs_fid fid;
struct cifs_open_parms oparms;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
......@@ -933,22 +978,28 @@ cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
goto out;
}
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
FILE_READ_ATTRIBUTES, FILE_SHARE_ALL,
OPEN_REPARSE_POINT, &netfid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = OPEN_REPARSE_POINT;
oparms.disposition = FILE_OPEN;
oparms.path = full_path;
oparms.fid = &fid;
oparms.reconnect = false;
rc = CIFS_open(xid, &oparms, &oplock, NULL);
if (rc)
goto out;
rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path,
rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
cifs_sb->local_nls);
if (rc)
goto out_close;
convert_delimiter(*target_path, '/');
out_close:
CIFSSMBClose(xid, tcon, netfid);
CIFSSMBClose(xid, tcon, fid.netfid);
out:
if (!rc)
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
......@@ -981,6 +1032,7 @@ struct smb_version_operations smb1_operations = {
.clear_stats = cifs_clear_stats,
.print_stats = cifs_print_stats,
.is_oplock_break = is_valid_oplock_break,
.downgrade_oplock = cifs_downgrade_oplock,
.check_trans2 = cifs_check_trans2,
.need_neg = cifs_need_neg,
.negotiate = cifs_negotiate,
......@@ -999,6 +1051,7 @@ struct smb_version_operations smb1_operations = {
.set_path_size = CIFSSMBSetEOF,
.set_file_size = CIFSSMBSetFileSize,
.set_file_info = smb_set_file_info,
.set_compression = cifs_set_compression,
.echo = CIFSSMBEcho,
.mkdir = CIFSSMBMkDir,
.mkdir_setinfo = cifs_mkdir_setinfo,
......@@ -1025,8 +1078,18 @@ struct smb_version_operations smb1_operations = {
.mand_lock = cifs_mand_lock,
.mand_unlock_range = cifs_unlock_range,
.push_mand_locks = cifs_push_mandatory_locks,
.query_mf_symlink = open_query_close_cifs_symlink,
.query_mf_symlink = cifs_query_mf_symlink,
.create_mf_symlink = cifs_create_mf_symlink,
.is_read_op = cifs_is_read_op,
#ifdef CONFIG_CIFS_XATTR
.query_all_EAs = CIFSSMBQAllEAs,
.set_EA = CIFSSMBSetEA,
#endif /* CIFS_XATTR */
#ifdef CONFIG_CIFS_ACL
.get_acl = get_cifs_acl,
.get_acl_by_fid = get_cifs_acl_by_fid,
.set_acl = set_cifs_acl,
#endif /* CIFS_ACL */
};
struct smb_version_values smb1_values = {
......
sources/centos70/smb2glob.h
View file @ 9d798057
......@@ -57,4 +57,7 @@
#define SMB2_CMACAES_SIZE (16)
#define SMB3_SIGNKEY_SIZE (16)
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
#endif /* _SMB2_GLOB_H */
sources/centos70/smb2inode.c
View file @ 9d798057
......@@ -124,12 +124,13 @@ move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
int
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path,
FILE_ALL_INFO *data, bool *adjust_tz)
FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
{
int rc;
struct smb2_file_all_info *smb2_data;
*adjust_tz = false;
*symlink = false;
smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
GFP_KERNEL);
......@@ -137,9 +138,16 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
return -ENOMEM;
rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
FILE_READ_ATTRIBUTES, FILE_OPEN, 0,
smb2_data, SMB2_OP_QUERY_INFO);
if (rc == -EOPNOTSUPP) {
*symlink = true;
/* Failed on a symbolic link - query a reparse point info */
rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
FILE_READ_ATTRIBUTES, FILE_OPEN,
OPEN_REPARSE_POINT, smb2_data,
SMB2_OP_QUERY_INFO);
}
if (rc)
goto out;
......
sources/centos70/smb2maperror.c
View file @ 9d798057
......@@ -306,7 +306,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
{STATUS_NONEXISTENT_SECTOR, -EIO, "STATUS_NONEXISTENT_SECTOR"},
{STATUS_MORE_PROCESSING_REQUIRED, -EIO,
"STATUS_MORE_PROCESSING_REQUIRED"},
{STATUS_NO_MEMORY, -ENOMEM, "STATUS_NO_MEMORY"},
{STATUS_NO_MEMORY, -EREMOTEIO, "STATUS_NO_MEMORY"},
{STATUS_CONFLICTING_ADDRESSES, -EADDRINUSE,
"STATUS_CONFLICTING_ADDRESSES"},
{STATUS_NOT_MAPPED_VIEW, -EIO, "STATUS_NOT_MAPPED_VIEW"},
......
sources/centos70/smb2misc.c
View file @ 9d798057
......@@ -575,9 +575,21 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
else
cfile->oplock_break_cancelled = false;
server->ops->set_oplock_level(cinode,
rsp->OplockLevel ? SMB2_OPLOCK_LEVEL_II : 0,
0, NULL);
set_bit(CIFS_INODE_PENDING_OPLOCK_BREAK,
&cinode->flags);
/*
* Set flag if the server downgrades the oplock
* to L2 else clear.
*/
if (rsp->OplockLevel)
set_bit(
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&cinode->flags);
else
clear_bit(
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&cinode->flags);
queue_work(cifsiod_wq, &cfile->oplock_break);
......
sources/centos70/smb2ops.c
View file @ 9d798057
......@@ -182,11 +182,8 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* start with specified wsize, or default */
wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
wsize = min_t(unsigned int, wsize, server->max_write);
/*
* limit write size to 2 ** 16, because we don't support multicredit
* requests now.
*/
wsize = min_t(unsigned int, wsize, 2 << 15);
/* set it to the maximum buffer size value we can send with 1 credit */
wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
return wsize;
}
......@@ -200,15 +197,102 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* start with specified rsize, or default */
rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
rsize = min_t(unsigned int, rsize, server->max_read);
/*
* limit write size to 2 ** 16, because we don't support multicredit
* requests now.
*/
rsize = min_t(unsigned int, rsize, 2 << 15);
/* set it to the maximum buffer size value we can send with 1 credit */
rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
return rsize;
}
#ifdef CONFIG_CIFS_STATS2
static int
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
{
int rc;
unsigned int ret_data_len = 0;
struct network_interface_info_ioctl_rsp *out_buf;
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
NULL /* no data input */, 0 /* no data input */,
(char **)&out_buf, &ret_data_len);
if ((rc == 0) && (ret_data_len > 0)) {
/* Dump info on first interface */
cifs_dbg(FYI, "Adapter Capability 0x%x\t",
le32_to_cpu(out_buf->Capability));
cifs_dbg(FYI, "Link Speed %lld\n",
le64_to_cpu(out_buf->LinkSpeed));
} else
cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
return rc;
}
#endif /* STATS2 */
static void
smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_open_parms oparms;
struct cifs_fid fid;
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.disposition = FILE_OPEN;
oparms.create_options = 0;
oparms.fid = &fid;
oparms.reconnect = false;
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
if (rc)
return;
#ifdef CONFIG_CIFS_STATS2
SMB3_request_interfaces(xid, tcon);
#endif /* STATS2 */
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
FS_ATTRIBUTE_INFORMATION);
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
FS_DEVICE_INFORMATION);
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
return;
}
static void
smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_open_parms oparms;
struct cifs_fid fid;
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.share_access = FILE_SHARE_ALL;
oparms.disposition = FILE_OPEN;
oparms.create_options = 0;
oparms.fid = &fid;
oparms.reconnect = false;
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
if (rc)
return;
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
FS_ATTRIBUTE_INFORMATION);
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
FS_DEVICE_INFORMATION);
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
return;
}
static int
smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path)
......@@ -305,7 +389,19 @@ smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
seq_puts(m, " ASYMMETRIC,");
if (tcon->capabilities == 0)
seq_puts(m, " None");
if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
seq_puts(m, " Aligned,");
if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
seq_puts(m, " Partition Aligned,");
if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
seq_puts(m, " SSD,");
if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
seq_puts(m, " TRIM-support,");
seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
if (tcon->perf_sector_size)
seq_printf(m, "\tOptimal sector size: 0x%x",
tcon->perf_sector_size);
}
static void
......@@ -395,6 +491,157 @@ smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
}
static int
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
struct copychunk_ioctl *pcchunk)
{
int rc;
unsigned int ret_data_len;
struct resume_key_req *res_key;
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
NULL, 0 /* no input */,
(char **)&res_key, &ret_data_len);
if (rc) {
cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
goto req_res_key_exit;
}
if (ret_data_len < sizeof(struct resume_key_req)) {
cifs_dbg(VFS, "Invalid refcopy resume key length\n");
rc = -EINVAL;
goto req_res_key_exit;
}
memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
req_res_key_exit:
kfree(res_key);
return rc;
}
static int
smb2_clone_range(const unsigned int xid,
struct cifsFileInfo *srcfile,
struct cifsFileInfo *trgtfile, u64 src_off,
u64 len, u64 dest_off)
{
int rc;
unsigned int ret_data_len;
struct copychunk_ioctl *pcchunk;
struct copychunk_ioctl_rsp *retbuf = NULL;
struct cifs_tcon *tcon;
int chunks_copied = 0;
bool chunk_sizes_updated = false;
pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
if (pcchunk == NULL)
return -ENOMEM;
cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
/* Request a key from the server to identify the source of the copy */
rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
srcfile->fid.persistent_fid,
srcfile->fid.volatile_fid, pcchunk);
/* Note: request_res_key sets res_key null only if rc !=0 */
if (rc)
goto cchunk_out;
/* For now array only one chunk long, will make more flexible later */
pcchunk->ChunkCount = __constant_cpu_to_le32(1);
pcchunk->Reserved = 0;
pcchunk->Reserved2 = 0;
tcon = tlink_tcon(trgtfile->tlink);
while (len > 0) {
pcchunk->SourceOffset = cpu_to_le64(src_off);
pcchunk->TargetOffset = cpu_to_le64(dest_off);
pcchunk->Length =
cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
/* Request server copy to target from src identified by key */
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
true /* is_fsctl */, (char *)pcchunk,
sizeof(struct copychunk_ioctl), (char **)&retbuf,
&ret_data_len);
if (rc == 0) {
if (ret_data_len !=
sizeof(struct copychunk_ioctl_rsp)) {
cifs_dbg(VFS, "invalid cchunk response size\n");
rc = -EIO;
goto cchunk_out;
}
if (retbuf->TotalBytesWritten == 0) {
cifs_dbg(FYI, "no bytes copied\n");
rc = -EIO;
goto cchunk_out;
}
/*
* Check if server claimed to write more than we asked
*/
if (le32_to_cpu(retbuf->TotalBytesWritten) >
le32_to_cpu(pcchunk->Length)) {
cifs_dbg(VFS, "invalid copy chunk response\n");
rc = -EIO;
goto cchunk_out;
}
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
cifs_dbg(VFS, "invalid num chunks written\n");
rc = -EIO;
goto cchunk_out;
}
chunks_copied++;
src_off += le32_to_cpu(retbuf->TotalBytesWritten);
dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
len -= le32_to_cpu(retbuf->TotalBytesWritten);
cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
le32_to_cpu(retbuf->ChunksWritten),
le32_to_cpu(retbuf->ChunkBytesWritten),
le32_to_cpu(retbuf->TotalBytesWritten));
} else if (rc == -EINVAL) {
if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
goto cchunk_out;
cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
le32_to_cpu(retbuf->ChunksWritten),
le32_to_cpu(retbuf->ChunkBytesWritten),
le32_to_cpu(retbuf->TotalBytesWritten));
/*
* Check if this is the first request using these sizes,
* (ie check if copy succeed once with original sizes
* and check if the server gave us different sizes after
* we already updated max sizes on previous request).
* if not then why is the server returning an error now
*/
if ((chunks_copied != 0) || chunk_sizes_updated)
goto cchunk_out;
/* Check that server is not asking us to grow size */
if (le32_to_cpu(retbuf->ChunkBytesWritten) <
tcon->max_bytes_chunk)
tcon->max_bytes_chunk =
le32_to_cpu(retbuf->ChunkBytesWritten);
else
goto cchunk_out; /* server gave us bogus size */
/* No need to change MaxChunks since already set to 1 */
chunk_sizes_updated = true;
}
}
cchunk_out:
kfree(pcchunk);
return rc;
}
static int
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid *fid)
{
......@@ -447,6 +694,14 @@ smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
}
static int
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile)
{
return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid);
}
static int
smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
const char *path, struct cifs_sb_info *cifs_sb,
struct cifs_fid *fid, __u16 search_flags,
......@@ -656,6 +911,17 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
}
static void
smb2_downgrade_oplock(struct TCP_Server_Info *server,
struct cifsInodeInfo *cinode, bool set_level2)
{
if (set_level2)
server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
0, NULL);
else
server->ops->set_oplock_level(cinode, 0, 0, NULL);
}
static void
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
unsigned int epoch, bool *purge_cache)
{
......@@ -787,6 +1053,7 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
......@@ -813,6 +1080,7 @@ smb3_create_lease_buf(u8 *lease_key, u8 oplock)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease_v2, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
......@@ -861,6 +1129,7 @@ struct smb_version_operations smb20_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
......@@ -869,6 +1138,7 @@ struct smb_version_operations smb20_operations = {
.logoff = SMB2_logoff,
.tree_connect = SMB2_tcon,
.tree_disconnect = SMB2_tdis,
.qfs_tcon = smb2_qfs_tcon,
.is_path_accessible = smb2_is_path_accessible,
.can_echo = smb2_can_echo,
.echo = SMB2_echo,
......@@ -878,6 +1148,7 @@ struct smb_version_operations smb20_operations = {
.set_path_size = smb2_set_path_size,
.set_file_size = smb2_set_file_size,
.set_file_info = smb2_set_file_info,
.set_compression = smb2_set_compression,
.mkdir = smb2_mkdir,
.mkdir_setinfo = smb2_mkdir_setinfo,
.rmdir = smb2_rmdir,
......@@ -911,6 +1182,7 @@ struct smb_version_operations smb20_operations = {
.set_oplock_level = smb2_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
.clone_range = smb2_clone_range,
};
struct smb_version_operations smb21_operations = {
......@@ -932,6 +1204,7 @@ struct smb_version_operations smb21_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
......@@ -940,6 +1213,7 @@ struct smb_version_operations smb21_operations = {
.logoff = SMB2_logoff,
.tree_connect = SMB2_tcon,
.tree_disconnect = SMB2_tdis,
.qfs_tcon = smb2_qfs_tcon,
.is_path_accessible = smb2_is_path_accessible,
.can_echo = smb2_can_echo,
.echo = SMB2_echo,
......@@ -949,6 +1223,7 @@ struct smb_version_operations smb21_operations = {
.set_path_size = smb2_set_path_size,
.set_file_size = smb2_set_file_size,
.set_file_info = smb2_set_file_info,
.set_compression = smb2_set_compression,
.mkdir = smb2_mkdir,
.mkdir_setinfo = smb2_mkdir_setinfo,
.rmdir = smb2_rmdir,
......@@ -982,6 +1257,7 @@ struct smb_version_operations smb21_operations = {
.set_oplock_level = smb21_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
.clone_range = smb2_clone_range,
};
struct smb_version_operations smb30_operations = {
......@@ -1004,6 +1280,7 @@ struct smb_version_operations smb30_operations = {
.print_stats = smb2_print_stats,
.dump_share_caps = smb2_dump_share_caps,
.is_oplock_break = smb2_is_valid_oplock_break,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
......@@ -1012,6 +1289,7 @@ struct smb_version_operations smb30_operations = {
.logoff = SMB2_logoff,
.tree_connect = SMB2_tcon,
.tree_disconnect = SMB2_tdis,
.qfs_tcon = smb3_qfs_tcon,
.is_path_accessible = smb2_is_path_accessible,
.can_echo = smb2_can_echo,
.echo = SMB2_echo,
......@@ -1021,6 +1299,7 @@ struct smb_version_operations smb30_operations = {
.set_path_size = smb2_set_path_size,
.set_file_size = smb2_set_file_size,
.set_file_info = smb2_set_file_info,
.set_compression = smb2_set_compression,
.mkdir = smb2_mkdir,
.mkdir_setinfo = smb2_mkdir_setinfo,
.rmdir = smb2_rmdir,
......@@ -1055,6 +1334,8 @@ struct smb_version_operations smb30_operations = {
.set_oplock_level = smb3_set_oplock_level,
.create_lease_buf = smb3_create_lease_buf,
.parse_lease_buf = smb3_parse_lease_buf,
.clone_range = smb2_clone_range,
.validate_negotiate = smb3_validate_negotiate,
};
struct smb_version_values smb20_values = {
......
sources/centos70/smb2pdu.c
View file @ 9d798057
......@@ -375,7 +375,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities);
memcpy(req->ClientGUID, cifs_client_guid, SMB2_CLIENT_GUID_SIZE);
/* ClientGUID must be zero for SMB2.02 dialect */
if (ses->server->vals->protocol_id == SMB20_PROT_ID)
memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE);
else
memcpy(req->ClientGUID, server->client_guid,
SMB2_CLIENT_GUID_SIZE);
iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field */
......@@ -413,7 +418,9 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
/* SMB2 only has an extended negflavor */
server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
server->maxBuf = le32_to_cpu(rsp->MaxTransactSize);
/* set it to the maximum buffer size value we can send with 1 credit */
server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize),
SMB2_MAX_BUFFER_SIZE);
server->max_read = le32_to_cpu(rsp->MaxReadSize);
server->max_write = le32_to_cpu(rsp->MaxWriteSize);
/* BB Do we need to validate the SecurityMode? */
......@@ -454,6 +461,82 @@ neg_exit:
return rc;
}
int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
{
int rc = 0;
struct validate_negotiate_info_req vneg_inbuf;
struct validate_negotiate_info_rsp *pneg_rsp;
u32 rsplen;
cifs_dbg(FYI, "validate negotiate\n");
/*
* validation ioctl must be signed, so no point sending this if we
* can not sign it. We could eventually change this to selectively
* sign just this, the first and only signed request on a connection.
* This is good enough for now since a user who wants better security
* would also enable signing on the mount. Having validation of
* negotiate info for signed connections helps reduce attack vectors
*/
if (tcon->ses->server->sign == false)
return 0; /* validation requires signing */
vneg_inbuf.Capabilities =
cpu_to_le32(tcon->ses->server->vals->req_capabilities);
memcpy(vneg_inbuf.Guid, tcon->ses->server->client_guid,
SMB2_CLIENT_GUID_SIZE);
if (tcon->ses->sign)
vneg_inbuf.SecurityMode =
cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED);
else if (global_secflags & CIFSSEC_MAY_SIGN)
vneg_inbuf.SecurityMode =
cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED);
else
vneg_inbuf.SecurityMode = 0;
vneg_inbuf.DialectCount = cpu_to_le16(1);
vneg_inbuf.Dialects[0] =
cpu_to_le16(tcon->ses->server->vals->protocol_id);
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
(char *)&vneg_inbuf, sizeof(struct validate_negotiate_info_req),
(char **)&pneg_rsp, &rsplen);
if (rc != 0) {
cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc);
return -EIO;
}
if (rsplen != sizeof(struct validate_negotiate_info_rsp)) {
cifs_dbg(VFS, "invalid size of protocol negotiate response\n");
return -EIO;
}
/* check validate negotiate info response matches what we got earlier */
if (pneg_rsp->Dialect !=
cpu_to_le16(tcon->ses->server->vals->protocol_id))
goto vneg_out;
if (pneg_rsp->SecurityMode != cpu_to_le16(tcon->ses->server->sec_mode))
goto vneg_out;
/* do not validate server guid because not saved at negprot time yet */
if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND |
SMB2_LARGE_FILES) != tcon->ses->server->capabilities)
goto vneg_out;
/* validate negotiate successful */
cifs_dbg(FYI, "validate negotiate info successful\n");
return 0;
vneg_out:
cifs_dbg(VFS, "protocol revalidation - security settings mismatch\n");
return -EIO;
}
int
SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
const struct nls_table *nls_cp)
......@@ -630,6 +713,8 @@ ssetup_ntlmssp_authenticate:
goto ssetup_exit;
ses->session_flags = le16_to_cpu(rsp->SessionFlags);
if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
cifs_dbg(VFS, "SMB3 encryption not supported yet\n");
ssetup_exit:
free_rsp_buf(resp_buftype, rsp);
......@@ -687,6 +772,10 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses)
else
return -EIO;
/* no need to send SMB logoff if uid already closed due to reconnect */
if (ses->need_reconnect)
goto smb2_session_already_dead;
rc = small_smb2_init(SMB2_LOGOFF, NULL, (void **) &req);
if (rc)
return rc;
......@@ -701,6 +790,8 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses)
* No tcon so can't do
* cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);
*/
smb2_session_already_dead:
return rc;
}
......@@ -711,6 +802,14 @@ static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code)
#define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */)
/* These are similar values to what Windows uses */
static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon)
{
tcon->max_chunks = 256;
tcon->max_bytes_chunk = 1048576;
tcon->max_bytes_copy = 16777216;
}
int
SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
struct cifs_tcon *tcon, const struct nls_table *cp)
......@@ -812,7 +911,9 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) &&
((tcon->share_flags & SHI1005_FLAGS_DFS) == 0))
cifs_dbg(VFS, "DFS capability contradicts DFS flag\n");
init_copy_chunk_defaults(tcon);
if (tcon->ses->server->ops->validate_negotiate)
rc = tcon->ses->server->ops->validate_negotiate(xid, tcon);
tcon_exit:
free_rsp_buf(resp_buftype, rsp);
kfree(unc_path);
......@@ -821,6 +922,7 @@ tcon_exit:
tcon_error_exit:
if (rsp->hdr.Status == STATUS_BAD_NETWORK_NAME) {
cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree);
if (tcon)
tcon->bad_network_name = true;
}
goto tcon_exit;
......@@ -871,6 +973,7 @@ create_durable_buf(void)
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_durable, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
/* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */
buf->Name[0] = 'D';
buf->Name[1] = 'H';
buf->Name[2] = 'n';
......@@ -895,6 +998,7 @@ create_reconnect_durable_buf(struct cifs_fid *fid)
buf->ccontext.NameLength = cpu_to_le16(4);
buf->Data.Fid.PersistentFileId = fid->persistent_fid;
buf->Data.Fid.VolatileFileId = fid->volatile_fid;
/* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */
buf->Name[0] = 'D';
buf->Name[1] = 'H';
buf->Name[2] = 'n';
......@@ -994,6 +1098,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
int rc = 0;
unsigned int num_iovecs = 2;
__u32 file_attributes = 0;
char *dhc_buf = NULL, *lc_buf = NULL;
cifs_dbg(FYI, "create/open\n");
......@@ -1060,6 +1165,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
kfree(copy_path);
return rc;
}
lc_buf = iov[num_iovecs-1].iov_base;
}
if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) {
......@@ -1074,9 +1180,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (rc) {
cifs_small_buf_release(req);
kfree(copy_path);
kfree(iov[num_iovecs-1].iov_base);
kfree(lc_buf);
return rc;
}
dhc_buf = iov[num_iovecs-1].iov_base;
}
rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
......@@ -1108,6 +1215,8 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
*oplock = rsp->OplockLevel;
creat_exit:
kfree(copy_path);
kfree(lc_buf);
kfree(dhc_buf);
free_rsp_buf(resp_buftype, rsp);
return rc;
}
......@@ -1131,6 +1240,7 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
cifs_dbg(FYI, "SMB2 IOCTL\n");
*out_data = NULL;
/* zero out returned data len, in case of error */
if (plen)
*plen = 0;
......@@ -1176,20 +1286,39 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
req->Flags = 0;
iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field */
/*
* If no input data, the size of ioctl struct in
* protocol spec still includes a 1 byte data buffer,
* but if input data passed to ioctl, we do not
* want to double count this, so we do not send
* the dummy one byte of data in iovec[0] if sending
* input data (in iovec[1]). We also must add 4 bytes
* in first iovec to allow for rfc1002 length field.
*/
if (indatalen) {
iov[0].iov_len = get_rfc1002_length(req) + 4 - 1;
inc_rfc1001_len(req, indatalen - 1);
} else
iov[0].iov_len = get_rfc1002_length(req) + 4;
if (indatalen)
inc_rfc1001_len(req, indatalen);
rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base;
if (rc != 0) {
if ((rc != 0) && (rc != -EINVAL)) {
if (tcon)
cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE);
goto ioctl_exit;
} else if (rc == -EINVAL) {
if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) &&
(opcode != FSCTL_SRV_COPYCHUNK)) {
if (tcon)
cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE);
goto ioctl_exit;
}
}
/* check if caller wants to look at return data or just return rc */
if ((plen == NULL) || (out_data == NULL))
......@@ -1228,6 +1357,31 @@ ioctl_exit:
return rc;
}
/*
* Individual callers to ioctl worker function follow
*/
int
SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid)
{
int rc;
struct compress_ioctl fsctl_input;
char *ret_data = NULL;
fsctl_input.CompressionState =
__constant_cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
FSCTL_SET_COMPRESSION, true /* is_fsctl */,
(char *)&fsctl_input /* data input */,
2 /* in data len */, &ret_data /* out data */, NULL);
cifs_dbg(FYI, "set compression rc %d\n", rc);
return rc;
}
int
SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid)
......@@ -2099,11 +2253,9 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
rc = SendReceive2(xid, ses, iov, num, &resp_buftype, 0);
rsp = (struct smb2_set_info_rsp *)iov[0].iov_base;
if (rc != 0) {
if (rc != 0)
cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE);
goto out;
}
out:
free_rsp_buf(resp_buftype, rsp);
kfree(iov);
return rc;
......@@ -2294,7 +2446,7 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
goto qinf_exit;
goto qfsinf_exit;
}
rsp = (struct smb2_query_info_rsp *)iov.iov_base;
......@@ -2306,7 +2458,70 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
if (!rc)
copy_fs_info_to_kstatfs(info, fsdata);
qinf_exit:
qfsinf_exit:
free_rsp_buf(resp_buftype, iov.iov_base);
return rc;
}
int
SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, int level)
{
struct smb2_query_info_rsp *rsp = NULL;
struct kvec iov;
int rc = 0;
int resp_buftype, max_len, min_len;
struct cifs_ses *ses = tcon->ses;
unsigned int rsp_len, offset;
if (level == FS_DEVICE_INFORMATION) {
max_len = sizeof(FILE_SYSTEM_DEVICE_INFO);
min_len = sizeof(FILE_SYSTEM_DEVICE_INFO);
} else if (level == FS_ATTRIBUTE_INFORMATION) {
max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO);
min_len = MIN_FS_ATTR_INFO_SIZE;
} else if (level == FS_SECTOR_SIZE_INFORMATION) {
max_len = sizeof(struct smb3_fs_ss_info);
min_len = sizeof(struct smb3_fs_ss_info);
} else {
cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level);
return -EINVAL;
}
rc = build_qfs_info_req(&iov, tcon, level, max_len,
persistent_fid, volatile_fid);
if (rc)
return rc;
rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0);
if (rc) {
cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
goto qfsattr_exit;
}
rsp = (struct smb2_query_info_rsp *)iov.iov_base;
rsp_len = le32_to_cpu(rsp->OutputBufferLength);
offset = le16_to_cpu(rsp->OutputBufferOffset);
rc = validate_buf(offset, rsp_len, &rsp->hdr, min_len);
if (rc)
goto qfsattr_exit;
if (level == FS_ATTRIBUTE_INFORMATION)
memcpy(&tcon->fsAttrInfo, 4 /* RFC1001 len */ + offset
+ (char *)&rsp->hdr, min_t(unsigned int,
rsp_len, max_len));
else if (level == FS_DEVICE_INFORMATION)
memcpy(&tcon->fsDevInfo, 4 /* RFC1001 len */ + offset
+ (char *)&rsp->hdr, sizeof(FILE_SYSTEM_DEVICE_INFO));
else if (level == FS_SECTOR_SIZE_INFORMATION) {
struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *)
(4 /* RFC1001 len */ + offset + (char *)&rsp->hdr);
tcon->ss_flags = le32_to_cpu(ss_info->Flags);
tcon->perf_sector_size =
le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf);
}
qfsattr_exit:
free_rsp_buf(resp_buftype, iov.iov_base);
return rc;
}
......
sources/centos70/smb2pdu.h
View file @ 9d798057
......@@ -122,6 +122,23 @@ struct smb2_pdu {
__le16 StructureSize2; /* size of wct area (varies, request specific) */
} __packed;
struct smb2_transform_hdr {
__be32 smb2_buf_length; /* big endian on wire */
/* length is only two or three bytes - with
one or two byte type preceding it that MBZ */
__u8 ProtocolId[4]; /* 0xFD 'S' 'M' 'B' */
__u8 Signature[16];
__u8 Nonce[11];
__u8 Reserved[5];
__le32 OriginalMessageSize;
__u16 Reserved1;
__le16 EncryptionAlgorithm;
__u64 SessionId;
} __packed;
/* Encryption Algorithms */
#define SMB2_ENCRYPTION_AES128_CCM __constant_cpu_to_le16(0x0001)
/*
* SMB2 flag definitions
*/
......@@ -166,8 +183,6 @@ struct smb2_symlink_err_rsp {
#define SMB2_CLIENT_GUID_SIZE 16
extern __u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE];
struct smb2_negotiate_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 36 */
......@@ -237,6 +252,7 @@ struct smb2_sess_setup_req {
/* Currently defined SessionFlags */
#define SMB2_SESSION_FLAG_IS_GUEST 0x0001
#define SMB2_SESSION_FLAG_IS_NULL 0x0002
#define SMB2_SESSION_FLAG_ENCRYPT_DATA 0x0004
struct smb2_sess_setup_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 9 */
......@@ -419,11 +435,15 @@ struct smb2_tree_disconnect_rsp {
#define SMB2_CREATE_SD_BUFFER "SecD" /* security descriptor */
#define SMB2_CREATE_DURABLE_HANDLE_REQUEST "DHnQ"
#define SMB2_CREATE_DURABLE_HANDLE_RECONNECT "DHnC"
#define SMB2_CREATE_ALLOCATION_SIZE "AlSi"
#define SMB2_CREATE_ALLOCATION_SIZE "AISi"
#define SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST "MxAc"
#define SMB2_CREATE_TIMEWARP_REQUEST "TWrp"
#define SMB2_CREATE_QUERY_ON_DISK_ID "QFid"
#define SMB2_CREATE_REQUEST_LEASE "RqLs"
#define SMB2_CREATE_DURABLE_HANDLE_REQUEST_V2 "DH2Q"
#define SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 "DH2C"
#define SMB2_CREATE_APP_INSTANCE_ID 0x45BCA66AEFA7F74A9008FA462E144D74
#define SVHDX_OPEN_DEVICE_CONTEXT 0x83CE6F1AD851E0986E34401CC9BCFCE9
struct smb2_create_req {
struct smb2_hdr hdr;
......@@ -534,9 +554,16 @@ struct create_durable {
} Data;
} __packed;
#define COPY_CHUNK_RES_KEY_SIZE 24
struct resume_key_req {
char ResumeKey[COPY_CHUNK_RES_KEY_SIZE];
__le32 ContextLength; /* MBZ */
char Context[0]; /* ignored, Windows sets to 4 bytes of zero */
} __packed;
/* this goes in the ioctl buffer when doing a copychunk request */
struct copychunk_ioctl {
char SourceKey[24];
char SourceKey[COPY_CHUNK_RES_KEY_SIZE];
__le32 ChunkCount; /* we are only sending 1 */
__le32 Reserved;
/* array will only be one chunk long for us */
......@@ -546,13 +573,25 @@ struct copychunk_ioctl {
__u32 Reserved2;
} __packed;
/* Response and Request are the same format */
struct validate_negotiate_info {
struct copychunk_ioctl_rsp {
__le32 ChunksWritten;
__le32 ChunkBytesWritten;
__le32 TotalBytesWritten;
} __packed;
struct validate_negotiate_info_req {
__le32 Capabilities;
__u8 Guid[SMB2_CLIENT_GUID_SIZE];
__le16 SecurityMode;
__le16 DialectCount;
__le16 Dialect[1];
__le16 Dialects[1]; /* dialect (someday maybe list) client asked for */
} __packed;
struct validate_negotiate_info_rsp {
__le32 Capabilities;
__u8 Guid[SMB2_CLIENT_GUID_SIZE];
__le16 SecurityMode;
__le16 Dialect; /* Dialect in use for the connection */
} __packed;
#define RSS_CAPABLE 0x00000001
......@@ -569,6 +608,10 @@ struct network_interface_info_ioctl_rsp {
#define NO_FILE_ID 0xFFFFFFFFFFFFFFFFULL /* general ioctls to srv not to file */
struct compress_ioctl {
__le16 CompressionState; /* See cifspdu.h for possible flag values */
} __packed;
struct smb2_ioctl_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
......@@ -584,7 +627,7 @@ struct smb2_ioctl_req {
__le32 MaxOutputResponse;
__le32 Flags;
__u32 Reserved2;
char Buffer[0];
__u8 Buffer[0];
} __packed;
struct smb2_ioctl_rsp {
......@@ -870,14 +913,16 @@ struct smb2_lease_ack {
/* File System Information Classes */
#define FS_VOLUME_INFORMATION 1 /* Query */
#define FS_LABEL_INFORMATION 2 /* Set */
#define FS_LABEL_INFORMATION 2 /* Local only */
#define FS_SIZE_INFORMATION 3 /* Query */
#define FS_DEVICE_INFORMATION 4 /* Query */
#define FS_ATTRIBUTE_INFORMATION 5 /* Query */
#define FS_CONTROL_INFORMATION 6 /* Query, Set */
#define FS_FULL_SIZE_INFORMATION 7 /* Query */
#define FS_OBJECT_ID_INFORMATION 8 /* Query, Set */
#define FS_DRIVER_PATH_INFORMATION 9 /* Query */
#define FS_DRIVER_PATH_INFORMATION 9 /* Local only */
#define FS_VOLUME_FLAGS_INFORMATION 10 /* Local only */
#define FS_SECTOR_SIZE_INFORMATION 11 /* SMB3 or later. Query */
struct smb2_fs_full_size_info {
__le64 TotalAllocationUnits;
......@@ -887,6 +932,22 @@ struct smb2_fs_full_size_info {
__le32 BytesPerSector;
} __packed;
#define SSINFO_FLAGS_ALIGNED_DEVICE 0x00000001
#define SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE 0x00000002
#define SSINFO_FLAGS_NO_SEEK_PENALTY 0x00000004
#define SSINFO_FLAGS_TRIM_ENABLED 0x00000008
/* sector size info struct */
struct smb3_fs_ss_info {
__le32 LogicalBytesPerSector;
__le32 PhysicalBytesPerSectorForAtomicity;
__le32 PhysicalBytesPerSectorForPerf;
__le32 FileSystemEffectivePhysicalBytesPerSectorForAtomicity;
__le32 Flags;
__le32 ByteOffsetForSectorAlignment;
__le32 ByteOffsetForPartitionAlignment;
} __packed;
/* partial list of QUERY INFO levels */
#define FILE_DIRECTORY_INFORMATION 1
#define FILE_FULL_DIRECTORY_INFORMATION 2
......
sources/centos70/smb2proto.h
View file @ 9d798057
......@@ -61,7 +61,7 @@ extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst,
extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const char *full_path, FILE_ALL_INFO *data,
bool *adjust_tz);
bool *adjust_tz, bool *symlink);
extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, __u64 size,
struct cifs_sb_info *cifs_sb, bool set_alloc);
......@@ -143,12 +143,16 @@ extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
FILE_BASIC_INFO *buf);
extern int SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid);
extern int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
const u64 persistent_fid, const u64 volatile_fid,
const __u8 oplock_level);
extern int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
struct kstatfs *FSData);
extern int SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id, int lvl);
extern int SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon,
const __u64 persist_fid, const __u64 volatile_fid,
const __u32 pid, const __u64 length, const __u64 offset,
......@@ -159,5 +163,6 @@ extern int smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon,
struct smb2_lock_element *buf);
extern int SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon,
__u8 *lease_key, const __le32 lease_state);
extern int smb3_validate_negotiate(const unsigned int, struct cifs_tcon *);
#endif /* _SMB2PROTO_H */
sources/centos70/smb2transport.c
View file @ 9d798057
......@@ -466,7 +466,7 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
static inline void
smb2_seq_num_into_buf(struct TCP_Server_Info *server, struct smb2_hdr *hdr)
{
hdr->MessageId = get_next_mid(server);
hdr->MessageId = get_next_mid64(server);
}
static struct mid_q_entry *
......@@ -516,13 +516,19 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf,
return -EAGAIN;
}
if (ses->status != CifsGood) {
/* check if SMB2 session is bad because we are setting it up */
if (ses->status == CifsNew) {
if ((buf->Command != SMB2_SESSION_SETUP) &&
(buf->Command != SMB2_NEGOTIATE))
return -EAGAIN;
/* else ok - we are setting up session */
}
if (ses->status == CifsExiting) {
if (buf->Command != SMB2_LOGOFF)
return -EAGAIN;
/* else ok - we are shutting down the session */
}
*mid = smb2_mid_entry_alloc(buf, ses->server);
if (*mid == NULL)
return -ENOMEM;
......
sources/centos70/smbfsctl.h
View file @ 9d798057
......@@ -90,16 +90,30 @@
#define FSCTL_LMR_REQUEST_RESILIENCY 0x001401D4 /* BB add struct */
#define FSCTL_LMR_GET_LINK_TRACK_INF 0x001400E8 /* BB add struct */
#define FSCTL_LMR_SET_LINK_TRACK_INF 0x001400EC /* BB add struct */
#define FSCTL_VALIDATE_NEGOTIATE_INFO 0x00140204 /* BB add struct */
#define FSCTL_VALIDATE_NEGOTIATE_INFO 0x00140204
/* Perform server-side data movement */
#define FSCTL_SRV_COPYCHUNK 0x001440F2
#define FSCTL_SRV_COPYCHUNK_WRITE 0x001480F2
#define FSCTL_QUERY_NETWORK_INTERFACE_INFO 0x001401FC /* BB add struct */
#define FSCTL_SRV_READ_HASH 0x001441BB /* BB add struct */
/* See FSCC 2.1.2.5 */
#define IO_REPARSE_TAG_MOUNT_POINT 0xA0000003
#define IO_REPARSE_TAG_HSM 0xC0000004
#define IO_REPARSE_TAG_SIS 0x80000007
#define IO_REPARSE_TAG_HSM2 0x80000006
#define IO_REPARSE_TAG_DRIVER_EXTENDER 0x80000005
/* Used by the DFS filter. See MS-DFSC */
#define IO_REPARSE_TAG_DFS 0x8000000A
/* Used by the DFS filter See MS-DFSC */
#define IO_REPARSE_TAG_DFSR 0x80000012
#define IO_REPARSE_TAG_FILTER_MANAGER 0x8000000B
/* See section MS-FSCC 2.1.2.4 */
#define IO_REPARSE_TAG_SYMLINK 0xA000000C
#define IO_REPARSE_TAG_DEDUP 0x80000013
#define IO_REPARSE_APPXSTREAM 0xC0000014
/* NFS symlinks, Win 8/SMB3 and later */
#define IO_REPARSE_TAG_NFS 0x80000014
/* fsctl flags */
/* If Flags is set to this value, the request is an FSCTL not ioctl request */
......
sources/centos70/transport.c
View file @ 9d798057
......@@ -58,7 +58,7 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)
return temp;
else {
memset(temp, 0, sizeof(struct mid_q_entry));
temp->mid = smb_buffer->Mid; /* always LE */
temp->mid = get_mid(smb_buffer);
temp->pid = current->pid;
temp->command = cpu_to_le16(smb_buffer->Command);
cifs_dbg(FYI, "For smb_command %d\n", smb_buffer->Command);
......@@ -439,8 +439,13 @@ static int
wait_for_free_request(struct TCP_Server_Info *server, const int timeout,
const int optype)
{
return wait_for_free_credits(server, timeout,
server->ops->get_credits_field(server, optype));
int *val;
val = server->ops->get_credits_field(server, optype);
/* Since an echo is already inflight, no need to wait to send another */
if (*val <= 0 && optype == CIFS_ECHO_OP)
return -EAGAIN;
return wait_for_free_credits(server, timeout, val);
}
static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
......@@ -455,13 +460,20 @@ static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
return -EAGAIN;
}
if (ses->status != CifsGood) {
/* check if SMB session is bad because we are setting it up */
if (ses->status == CifsNew) {
if ((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) &&
(in_buf->Command != SMB_COM_NEGOTIATE))
return -EAGAIN;
/* else ok - we are setting up session */
}
if (ses->status == CifsExiting) {
/* check if SMB session is bad because we are setting it up */
if (in_buf->Command != SMB_COM_LOGOFF_ANDX)
return -EAGAIN;
/* else ok - we are shutting down session */
}
*ppmidQ = AllocMidQEntry(in_buf, ses->server);
if (*ppmidQ == NULL)
return -ENOMEM;
......
sources/centos70/xattr.c
View file @ 9d798057
......@@ -82,9 +82,11 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name)
goto remove_ea_exit;
ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, NULL,
(__u16)0, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->set_EA)
rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
full_path, ea_name, NULL, (__u16)0,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
remove_ea_exit:
kfree(full_path);
......@@ -149,18 +151,22 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
cifs_dbg(FYI, "attempt to set cifs inode metadata\n");
ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
(__u16)value_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->set_EA)
rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
full_path, ea_name, ea_value, (__u16)value_size,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)
== 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto set_ea_exit;
ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
(__u16)value_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->set_EA)
rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
full_path, ea_name, ea_value, (__u16)value_size,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
#ifdef CONFIG_CIFS_ACL
......@@ -170,8 +176,12 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
rc = -ENOMEM;
} else {
memcpy(pacl, ea_value, value_size);
rc = set_cifs_acl(pacl, value_size,
direntry->d_inode, full_path, CIFS_ACL_DACL);
if (pTcon->ses->server->ops->set_acl)
rc = pTcon->ses->server->ops->set_acl(pacl,
value_size, direntry->d_inode,
full_path, CIFS_ACL_DACL);
else
rc = -EOPNOTSUPP;
if (rc == 0) /* force revalidate of the inode */
CIFS_I(direntry->d_inode)->time = 0;
kfree(pacl);
......@@ -272,17 +282,21 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
/* revalidate/getattr then populate from inode */
} /* BB add else when above is implemented */
ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->query_all_EAs)
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
full_path, ea_name, ea_value, buf_size,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto get_ea_exit;
ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->query_all_EAs)
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
full_path, ea_name, ea_value, buf_size,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS,
strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
#ifdef CONFIG_CIFS_POSIX
......@@ -313,8 +327,11 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
u32 acllen;
struct cifs_ntsd *pacl;
pacl = get_cifs_acl(cifs_sb, direntry->d_inode,
full_path, &acllen);
if (pTcon->ses->server->ops->get_acl == NULL)
goto get_ea_exit; /* rc already EOPNOTSUPP */
pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
direntry->d_inode, full_path, &acllen);
if (IS_ERR(pacl)) {
rc = PTR_ERR(pacl);
cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
......@@ -400,11 +417,12 @@ ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size)
/* if proc/fs/cifs/streamstoxattr is set then
search server for EAs or streams to
returns as xattrs */
rc = CIFSSMBQAllEAs(xid, pTcon, full_path, NULL, data,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (pTcon->ses->server->ops->query_all_EAs)
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
full_path, NULL, data, buf_size,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
list_ea_exit:
kfree(full_path);
free_xid(xid);
......
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