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etercifs
Commit 7e23c0f8 authored by Vitaly Lipatov's avatar Vitaly Lipatov
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update 3.16 up to 3.16.53

parent 833e6356
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Showing with 849 additions and 293 deletions
sources/3.16/Makefile
View file @ 7e23c0f8
#
# Makefile for Linux CIFS VFS client
#
obj-$(CONFIG_CIFS) += etercifs.o
obj-$(CONFIG_CIFS) += cifs.o
etercifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
link.o misc.o netmisc.o smbencrypt.o transport.o asn1.o \
cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o smb1ops.o winucase.o
etercifs-$(CONFIG_CIFS_ACL) += cifsacl.o
cifs-$(CONFIG_CIFS_ACL) += cifsacl.o
etercifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
cifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
etercifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
etercifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
etercifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
cifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
smb2misc.o smb2pdu.o smb2inode.o smb2file.o
sources/3.16/cifs_debug.c
View file @ 7e23c0f8
......@@ -170,6 +170,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
list_for_each(tmp1, &cifs_tcp_ses_list) {
server = list_entry(tmp1, struct TCP_Server_Info,
tcp_ses_list);
seq_printf(m, "\nNumber of credits: %d", server->credits);
i++;
list_for_each(tmp2, &server->smb_ses_list) {
ses = list_entry(tmp2, struct cifs_ses,
......
sources/3.16/cifs_fs_sb.h
View file @ 7e23c0f8
......@@ -45,6 +45,9 @@
#define CIFS_MOUNT_POSIXACL 0x100000 /* mirror of MS_POSIXACL in mnt_cifs_flags */
#define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
#define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
#define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
* root mountable
*/
struct cifs_sb_info {
struct rb_root tlink_tree;
......@@ -66,5 +69,6 @@ struct cifs_sb_info {
struct backing_dev_info bdi;
struct delayed_work prune_tlinks;
struct rcu_head rcu;
char *prepath;
};
#endif /* _CIFS_FS_SB_H */
sources/3.16/cifs_spnego.c
View file @ 7e23c0f8
......@@ -24,10 +24,13 @@
#include <linux/string.h>
#include <keys/user-type.h>
#include <linux/key-type.h>
#include <linux/keyctl.h>
#include <linux/inet.h>
#include "cifsglob.h"
#include "cifs_spnego.h"
#include "cifs_debug.h"
#include "cifsproto.h"
static const struct cred *spnego_cred;
/* create a new cifs key */
static int
......@@ -103,6 +106,7 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
size_t desc_len;
struct key *spnego_key;
const char *hostname = server->hostname;
const struct cred *saved_cred;
/* length of fields (with semicolons): ver=0xyz ip4=ipaddress
host=hostname sec=mechanism uid=0xFF user=username */
......@@ -164,7 +168,9 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
sprintf(dp, ";pid=0x%x", current->pid);
cifs_dbg(FYI, "key description = %s\n", description);
saved_cred = override_creds(spnego_cred);
spnego_key = request_key(&cifs_spnego_key_type, description, "");
revert_creds(saved_cred);
#ifdef CONFIG_CIFS_DEBUG2
if (cifsFYI && !IS_ERR(spnego_key)) {
......@@ -178,3 +184,64 @@ out:
kfree(description);
return spnego_key;
}
int
init_cifs_spnego(void)
{
struct cred *cred;
struct key *keyring;
int ret;
cifs_dbg(FYI, "Registering the %s key type\n",
cifs_spnego_key_type.name);
/*
* Create an override credential set with special thread keyring for
* spnego upcalls.
*/
cred = prepare_kernel_cred(NULL);
if (!cred)
return -ENOMEM;
keyring = keyring_alloc(".cifs_spnego",
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
(KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ,
KEY_ALLOC_NOT_IN_QUOTA, NULL);
if (IS_ERR(keyring)) {
ret = PTR_ERR(keyring);
goto failed_put_cred;
}
ret = register_key_type(&cifs_spnego_key_type);
if (ret < 0)
goto failed_put_key;
/*
* instruct request_key() to use this special keyring as a cache for
* the results it looks up
*/
set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
cred->thread_keyring = keyring;
cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
spnego_cred = cred;
cifs_dbg(FYI, "cifs spnego keyring: %d\n", key_serial(keyring));
return 0;
failed_put_key:
key_put(keyring);
failed_put_cred:
put_cred(cred);
return ret;
}
void
exit_cifs_spnego(void)
{
key_revoke(spnego_cred->thread_keyring);
unregister_key_type(&cifs_spnego_key_type);
put_cred(spnego_cred);
cifs_dbg(FYI, "Unregistered %s key type\n", cifs_spnego_key_type.name);
}
sources/3.16/cifsacl.c
View file @ 7e23c0f8
......@@ -913,7 +913,6 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
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;
......@@ -983,7 +982,6 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
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;
......
sources/3.16/cifsencrypt.c
View file @ 7e23c0f8
......@@ -727,24 +727,26 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
memcpy(ses->auth_key.response + baselen, tiblob, tilen);
mutex_lock(&ses->server->srv_mutex);
rc = crypto_hmacmd5_alloc(ses->server);
if (rc) {
cifs_dbg(VFS, "could not crypto alloc hmacmd5 rc %d\n", rc);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
/* calculate ntlmv2_hash */
rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp);
if (rc) {
cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
/* calculate first part of the client response (CR1) */
rc = CalcNTLMv2_response(ses, ntlmv2_hash);
if (rc) {
cifs_dbg(VFS, "Could not calculate CR1 rc: %d\n", rc);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
/* now calculate the session key for NTLMv2 */
......@@ -753,13 +755,13 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
if (rc) {
cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n",
__func__);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
......@@ -767,7 +769,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
CIFS_HMAC_MD5_HASH_SIZE);
if (rc) {
cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
goto setup_ntlmv2_rsp_ret;
goto unlock;
}
rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
......@@ -775,6 +777,8 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
if (rc)
cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
unlock:
mutex_unlock(&ses->server->srv_mutex);
setup_ntlmv2_rsp_ret:
kfree(tiblob);
......
sources/3.16/cifsfs.c
View file @ 7e23c0f8
......@@ -86,6 +86,7 @@ extern mempool_t *cifs_req_poolp;
extern mempool_t *cifs_mid_poolp;
struct workqueue_struct *cifsiod_wq;
struct workqueue_struct *cifsoplockd_wq;
/*
* Bumps refcount for cifs super block.
......@@ -256,7 +257,7 @@ cifs_alloc_inode(struct super_block *sb)
cifs_inode->createtime = 0;
cifs_inode->epoch = 0;
#ifdef CONFIG_CIFS_SMB2
get_random_bytes(cifs_inode->lease_key, SMB2_LEASE_KEY_SIZE);
generate_random_uuid(cifs_inode->lease_key);
#endif
/*
* Can not set i_flags here - they get immediately overwritten to zero
......@@ -471,9 +472,6 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
seq_puts(s, ",mfsymlinks");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
seq_puts(s, ",fsc");
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL))
seq_puts(s, ",wine");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
seq_puts(s, ",nostrictsync");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
......@@ -586,6 +584,9 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
char *s, *p;
char sep;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
return dget(sb->s_root);
full_path = cifs_build_path_to_root(vol, cifs_sb,
cifs_sb_master_tcon(cifs_sb));
if (full_path == NULL)
......@@ -665,10 +666,14 @@ cifs_do_mount(struct file_system_type *fs_type,
cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
if (cifs_sb->mountdata == NULL) {
root = ERR_PTR(-ENOMEM);
goto out_cifs_sb;
goto out_free;
}
cifs_setup_cifs_sb(volume_info, cifs_sb);
rc = cifs_setup_cifs_sb(volume_info, cifs_sb);
if (rc) {
root = ERR_PTR(rc);
goto out_free;
}
rc = cifs_mount(cifs_sb, volume_info);
if (rc) {
......@@ -676,7 +681,7 @@ cifs_do_mount(struct file_system_type *fs_type,
cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n",
rc);
root = ERR_PTR(rc);
goto out_mountdata;
goto out_free;
}
mnt_data.vol = volume_info;
......@@ -719,9 +724,9 @@ out:
cifs_cleanup_volume_info(volume_info);
return root;
out_mountdata:
out_free:
kfree(cifs_sb->prepath);
kfree(cifs_sb->mountdata);
out_cifs_sb:
kfree(cifs_sb);
out_nls:
unload_nls(volume_info->local_nls);
......@@ -1196,7 +1201,6 @@ init_cifs(void)
GlobalTotalActiveXid = 0;
GlobalMaxActiveXid = 0;
spin_lock_init(&cifs_tcp_ses_lock);
spin_lock_init(&cifs_file_list_lock);
spin_lock_init(&GlobalMid_Lock);
if (cifs_max_pending < 2) {
......@@ -1214,9 +1218,16 @@ init_cifs(void)
goto out_clean_proc;
}
cifsoplockd_wq = alloc_workqueue("cifsoplockd",
WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
if (!cifsoplockd_wq) {
rc = -ENOMEM;
goto out_destroy_cifsiod_wq;
}
rc = cifs_fscache_register();
if (rc)
goto out_destroy_wq;
goto out_destroy_cifsoplockd_wq;
rc = cifs_init_inodecache();
if (rc)
......@@ -1231,7 +1242,7 @@ init_cifs(void)
goto out_destroy_mids;
#ifdef CONFIG_CIFS_UPCALL
rc = register_key_type(&cifs_spnego_key_type);
rc = init_cifs_spnego();
if (rc)
goto out_destroy_request_bufs;
#endif /* CONFIG_CIFS_UPCALL */
......@@ -1254,7 +1265,7 @@ out_init_cifs_idmap:
out_register_key_type:
#endif
#ifdef CONFIG_CIFS_UPCALL
unregister_key_type(&cifs_spnego_key_type);
exit_cifs_spnego();
out_destroy_request_bufs:
#endif
cifs_destroy_request_bufs();
......@@ -1264,7 +1275,9 @@ out_destroy_inodecache:
cifs_destroy_inodecache();
out_unreg_fscache:
cifs_fscache_unregister();
out_destroy_wq:
out_destroy_cifsoplockd_wq:
destroy_workqueue(cifsoplockd_wq);
out_destroy_cifsiod_wq:
destroy_workqueue(cifsiod_wq);
out_clean_proc:
cifs_proc_clean();
......@@ -1281,12 +1294,13 @@ exit_cifs(void)
exit_cifs_idmap();
#endif
#ifdef CONFIG_CIFS_UPCALL
unregister_key_type(&cifs_spnego_key_type);
exit_cifs_spnego();
#endif
cifs_destroy_request_bufs();
cifs_destroy_mids();
cifs_destroy_inodecache();
cifs_fscache_unregister();
destroy_workqueue(cifsoplockd_wq);
destroy_workqueue(cifsiod_wq);
cifs_proc_clean();
}
......
sources/3.16/cifsglob.h
View file @ 7e23c0f8
......@@ -223,6 +223,7 @@ struct smb_version_operations {
/* verify the message */
int (*check_message)(char *, unsigned int);
bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *);
void (*downgrade_oplock)(struct TCP_Server_Info *,
struct cifsInodeInfo *, bool);
/* process transaction2 response */
......@@ -606,6 +607,8 @@ struct TCP_Server_Info {
#ifdef CONFIG_CIFS_SMB2
unsigned int max_read;
unsigned int max_write;
struct delayed_work reconnect; /* reconnect workqueue job */
struct mutex reconnect_mutex; /* prevent simultaneous reconnects */
#endif /* CONFIG_CIFS_SMB2 */
};
......@@ -795,7 +798,9 @@ cap_unix(struct cifs_ses *ses)
struct cifs_tcon {
struct list_head tcon_list;
int tc_count;
struct list_head rlist; /* reconnect list */
struct list_head openFileList;
spinlock_t open_file_lock; /* protects list above */
struct cifs_ses *ses; /* pointer to session associated with */
char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
char *nativeFileSystem;
......@@ -852,7 +857,7 @@ struct cifs_tcon {
#endif /* CONFIG_CIFS_STATS2 */
__u64 bytes_read;
__u64 bytes_written;
spinlock_t stat_lock;
spinlock_t stat_lock; /* protects the two fields above */
#endif /* CONFIG_CIFS_STATS */
FILE_SYSTEM_DEVICE_INFO fsDevInfo;
FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
......@@ -868,7 +873,6 @@ struct cifs_tcon {
bool need_reconnect:1; /* connection reset, tid now invalid */
#ifdef CONFIG_CIFS_SMB2
bool print:1; /* set if connection to printer share */
bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
__le32 capabilities;
__u32 share_flags;
__u32 maximal_access;
......@@ -974,7 +978,6 @@ struct cifs_open_parms {
struct cifs_sb_info *cifs_sb;
int disposition;
int desired_access;
int share_access;
int create_options;
const char *path;
struct cifs_fid *fid;
......@@ -1000,8 +1003,10 @@ struct cifs_fid_locks {
};
struct cifsFileInfo {
/* following two lists are protected by tcon->open_file_lock */
struct list_head tlist; /* pointer to next fid owned by tcon */
struct list_head flist; /* next fid (file instance) for this inode */
/* lock list below protected by cifsi->lock_sem */
struct cifs_fid_locks *llist; /* brlocks held by this fid */
kuid_t uid; /* allows finding which FileInfo structure */
__u32 pid; /* process id who opened file */
......@@ -1009,23 +1014,17 @@ struct cifsFileInfo {
/* BB add lock scope info here if needed */ ;
/* lock scope id (0 if none) */
struct dentry *dentry;
unsigned int f_flags;
struct tcon_link *tlink;
unsigned int f_flags;
bool invalidHandle:1; /* file closed via session abend */
bool oplock_break_cancelled:1;
int count; /* refcount protected by cifs_file_list_lock */
int count;
spinlock_t file_info_lock; /* protects four flag/count fields above */
struct mutex fh_mutex; /* prevents reopen race after dead ses*/
struct cifs_search_info srch_inf;
struct work_struct oplock_break; /* work for oplock breaks */
};
#define SHARE_FLAGS_SHIFT 28
static inline int cifs_get_share_flags(unsigned int flags)
{
return (~(flags >> SHARE_FLAGS_SHIFT)) & 7;
}
struct cifs_io_parms {
__u16 netfid;
#ifdef CONFIG_CIFS_SMB2
......@@ -1084,7 +1083,7 @@ struct cifs_writedata {
/*
* Take a reference on the file private data. Must be called with
* cifs_file_list_lock held.
* cfile->file_info_lock held.
*/
static inline void
cifsFileInfo_get_locked(struct cifsFileInfo *cifs_file)
......@@ -1247,12 +1246,19 @@ struct mid_q_entry {
void *callback_data; /* general purpose pointer for callback */
void *resp_buf; /* pointer to received SMB header */
int mid_state; /* wish this were enum but can not pass to wait_event */
unsigned int mid_flags;
__le16 command; /* smb command code */
bool large_buf:1; /* if valid response, is pointer to large buf */
bool multiRsp:1; /* multiple trans2 responses for one request */
bool multiEnd:1; /* both received */
};
struct close_cancelled_open {
struct cifs_fid fid;
struct cifs_tcon *tcon;
struct work_struct work;
};
/* Make code in transport.c a little cleaner by moving
update of optional stats into function below */
#ifdef CONFIG_CIFS_STATS2
......@@ -1384,6 +1390,9 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param,
#define MID_RESPONSE_MALFORMED 0x10
#define MID_SHUTDOWN 0x20
/* Flags */
#define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */
/* Types of response buffer returned from SendReceive2 */
#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
#define CIFS_SMALL_BUFFER 1
......@@ -1471,8 +1480,10 @@ require use of the stronger protocol */
* GlobalMid_Lock protects:
* list operations on pending_mid_q and oplockQ
* updates to XID counters, multiplex id and SMB sequence numbers
* cifs_file_list_lock protects:
* list operations on tcp and SMB session lists and tCon lists
* tcp_ses_lock protects:
* list operations on tcp and SMB session lists
* tcon->open_file_lock protects the list of open files hanging off the tcon
* cfile->file_info_lock protects counters and fields in cifs file struct
* f_owner.lock protects certain per file struct operations
* mapping->page_lock protects certain per page operations
*
......@@ -1504,18 +1515,12 @@ GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
* tcp session, and the list of tcon's per smb session. It also protects
* the reference counters for the server, smb session, and tcon. Finally,
* changes to the tcon->tidStatus should be done while holding this lock.
* generally the locks should be taken in order tcp_ses_lock before
* tcon->open_file_lock and that before file->file_info_lock since the
* structure order is cifs_socket-->cifs_ses-->cifs_tcon-->cifs_file
*/
GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
/*
* This lock protects the cifs_file->llist and cifs_file->flist
* list operations, and updates to some flags (cifs_file->invalidHandle)
* It will be moved to either use the tcon->stat_lock or equivalent later.
* If cifs_tcp_ses_lock and the lock below are both needed to be held, then
* the cifs_tcp_ses_lock must be grabbed first and released last.
*/
GLOBAL_EXTERN spinlock_t cifs_file_list_lock;
#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
/* Outstanding dir notify requests */
GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
......@@ -1576,6 +1581,7 @@ void cifs_oplock_break(struct work_struct *work);
extern const struct slow_work_ops cifs_oplock_break_ops;
extern struct workqueue_struct *cifsiod_wq;
extern struct workqueue_struct *cifsoplockd_wq;
extern mempool_t *cifs_mid_poolp;
......
sources/3.16/cifspdu.h
View file @ 7e23c0f8
......@@ -22,14 +22,6 @@
#ifndef _CIFSPDU_H
#define _CIFSPDU_H
#ifndef CONFIG_CIFS_XATTR
#define CONFIG_CIFS_XATTR
#endif
#ifndef CONFIG_CIFS_POSIX
#define CONFIG_CIFS_POSIX
#endif
#include <net/sock.h>
#include <asm/unaligned.h>
#include "smbfsctl.h"
......
sources/3.16/cifsproto.h
View file @ 7e23c0f8
......@@ -59,6 +59,8 @@ do { \
} while (0)
extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
extern int init_cifs_spnego(void);
extern void exit_cifs_spnego(void);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct smb_vol *vol,
struct cifs_sb_info *cifs_sb,
......@@ -181,7 +183,7 @@ extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf,
extern int cifs_readv_from_socket(struct TCP_Server_Info *server,
struct kvec *iov_orig, unsigned int nr_segs,
unsigned int to_read);
extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
extern int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
struct cifs_sb_info *cifs_sb);
extern int cifs_match_super(struct super_block *, void *);
extern void cifs_cleanup_volume_info(struct smb_vol *pvolume_info);
......@@ -201,6 +203,9 @@ extern void cifs_add_pending_open_locked(struct cifs_fid *fid,
struct tcon_link *tlink,
struct cifs_pending_open *open);
extern void cifs_del_pending_open(struct cifs_pending_open *open);
extern void cifs_put_tcp_session(struct TCP_Server_Info *server,
int from_reconnect);
extern void cifs_put_tcon(struct cifs_tcon *tcon);
#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)
extern void cifs_dfs_release_automount_timer(void);
......
sources/3.16/cifssmb.c
View file @ 7e23c0f8
......@@ -98,13 +98,13 @@ cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
struct list_head *tmp1;
/* list all files open on tree connection and mark them invalid */
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
list_for_each_safe(tmp, tmp1, &tcon->openFileList) {
open_file = list_entry(tmp, struct cifsFileInfo, tlist);
open_file->invalidHandle = true;
open_file->oplock_break_cancelled = true;
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
/*
* BB Add call to invalidate_inodes(sb) for all superblocks mounted
* to this tcon.
......@@ -720,6 +720,9 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
if (rc)
return rc;
if (server->capabilities & CAP_UNICODE)
smb->hdr.Flags2 |= SMBFLG2_UNICODE;
/* set up echo request */
smb->hdr.Tid = 0xffff;
smb->hdr.WordCount = 1;
......@@ -1121,7 +1124,6 @@ psx_create_err:
return rc;
}
#ifdef ETERSOFT_USE_SMB_LEGACY_OPEN
static __u16 convert_disposition(int disposition)
{
__u16 ofun = 0;
......@@ -1165,7 +1167,6 @@ access_flags_to_smbopen_mode(const int access_flags)
/* just go for read/write */
return SMBOPEN_READWRITE;
}
#endif
int
SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
......@@ -1174,10 +1175,6 @@ SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
int *pOplock, FILE_ALL_INFO *pfile_info,
const struct nls_table *nls_codepage, int remap)
{
#ifndef ETERSOFT_USE_SMB_LEGACY_OPEN
printk("Etersoft: Do not use SMBLegacyOpen!\n");
return -EACCES;
#else
int rc = -EACCES;
OPENX_REQ *pSMB = NULL;
OPENX_RSP *pSMBr = NULL;
......@@ -1276,7 +1273,6 @@ OldOpenRetry:
if (rc == -EAGAIN)
goto OldOpenRetry;
return rc;
#endif
}
int
......@@ -1354,7 +1350,7 @@ openRetry:
if (create_options & CREATE_OPTION_READONLY)
req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
req->ShareAccess = cpu_to_le32(oparms->share_access);
req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
req->CreateDisposition = cpu_to_le32(disposition);
req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
......@@ -1434,6 +1430,8 @@ cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
length = discard_remaining_data(server);
dequeue_mid(mid, rdata->result);
mid->resp_buf = server->smallbuf;
server->smallbuf = NULL;
return length;
}
......@@ -1549,6 +1547,8 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
return cifs_readv_discard(server, mid);
dequeue_mid(mid, false);
mid->resp_buf = server->smallbuf;
server->smallbuf = NULL;
return length;
}
......
sources/3.16/connect.c
View file @ 7e23c0f8
......@@ -52,6 +52,9 @@
#include "nterr.h"
#include "rfc1002pdu.h"
#include "fscache.h"
#ifdef CONFIG_CIFS_SMB2
#include "smb2proto.h"
#endif
#define CIFS_PORT 445
#define RFC1001_PORT 139
......@@ -81,7 +84,7 @@ enum {
Opt_nointr, Opt_intr,
Opt_nostrictsync, Opt_strictsync,
Opt_serverino, Opt_noserverino,
Opt_rwpidforward, Opt_wine, Opt_cifsacl, Opt_nocifsacl,
Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl,
Opt_acl, Opt_noacl, Opt_locallease,
Opt_sign, Opt_seal, Opt_noac,
Opt_fsc, Opt_mfsymlinks,
......@@ -153,7 +156,6 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_serverino, "serverino" },
{ Opt_noserverino, "noserverino" },
{ Opt_rwpidforward, "rwpidforward" },
{ Opt_wine, "wine" },
{ Opt_cifsacl, "cifsacl" },
{ Opt_nocifsacl, "nocifsacl" },
{ Opt_acl, "acl" },
......@@ -411,7 +413,9 @@ cifs_echo_request(struct work_struct *work)
* server->ops->need_neg() == true. Also, no need to ping if
* we got a response recently.
*/
if (!server->ops->need_neg || server->ops->need_neg(server) ||
if (server->tcpStatus == CifsNeedReconnect ||
server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew ||
(server->ops->can_echo && !server->ops->can_echo(server)) ||
time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
goto requeue_echo;
......@@ -907,10 +911,19 @@ cifs_demultiplex_thread(void *p)
server->lstrp = jiffies;
if (mid_entry != NULL) {
if ((mid_entry->mid_flags & MID_WAIT_CANCELLED) &&
mid_entry->mid_state == MID_RESPONSE_RECEIVED &&
server->ops->handle_cancelled_mid)
server->ops->handle_cancelled_mid(
mid_entry->resp_buf,
server);
if (!mid_entry->multiRsp || mid_entry->multiEnd)
mid_entry->callback(mid_entry);
} else if (!server->ops->is_oplock_break ||
!server->ops->is_oplock_break(buf, server)) {
} else if (server->ops->is_oplock_break &&
server->ops->is_oplock_break(buf, server)) {
cifs_dbg(FYI, "Received oplock break\n");
} else {
cifs_dbg(VFS, "No task to wake, unknown frame received! NumMids %d\n",
atomic_read(&midCount));
cifs_dump_mem("Received Data is: ", buf,
......@@ -1421,10 +1434,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
case Opt_rwpidforward:
vol->rwpidforward = 1;
break;
case Opt_wine:
vol->strict_io = 1;
vol->mand_lock = 1;
break;
case Opt_cifsacl:
vol->cifs_acl = 1;
break;
......@@ -2063,8 +2072,8 @@ cifs_find_tcp_session(struct smb_vol *vol)
return NULL;
}
static void
cifs_put_tcp_session(struct TCP_Server_Info *server)
void
cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect)
{
struct task_struct *task;
......@@ -2081,6 +2090,19 @@ cifs_put_tcp_session(struct TCP_Server_Info *server)
cancel_delayed_work_sync(&server->echo);
#ifdef CONFIG_CIFS_SMB2
if (from_reconnect)
/*
* Avoid deadlock here: reconnect work calls
* cifs_put_tcp_session() at its end. Need to be sure
* that reconnect work does nothing with server pointer after
* that step.
*/
cancel_delayed_work(&server->reconnect);
else
cancel_delayed_work_sync(&server->reconnect);
#endif
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
......@@ -2145,12 +2167,16 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
INIT_LIST_HEAD(&tcp_ses->tcp_ses_list);
INIT_LIST_HEAD(&tcp_ses->smb_ses_list);
INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request);
#ifdef CONFIG_CIFS_SMB2
INIT_DELAYED_WORK(&tcp_ses->reconnect, smb2_reconnect_server);
mutex_init(&tcp_ses->reconnect_mutex);
#endif
memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr,
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);
generate_random_uuid(tcp_ses->client_guid);
#endif
/*
* at this point we are the only ones with the pointer
......@@ -2297,7 +2323,7 @@ cifs_put_smb_ses(struct cifs_ses *ses)
spin_unlock(&cifs_tcp_ses_lock);
sesInfoFree(ses);
cifs_put_tcp_session(server);
cifs_put_tcp_session(server, 0);
}
#ifdef CONFIG_KEYS
......@@ -2470,7 +2496,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
mutex_unlock(&ses->session_mutex);
/* existing SMB ses has a server reference already */
cifs_put_tcp_session(server);
cifs_put_tcp_session(server, 0);
free_xid(xid);
return ses;
}
......@@ -2560,7 +2586,7 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc)
return NULL;
}
static void
void
cifs_put_tcon(struct cifs_tcon *tcon)
{
unsigned int xid;
......@@ -2725,6 +2751,22 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data)
return 1;
}
static int
match_prepath(struct super_block *sb, struct cifs_mnt_data *mnt_data)
{
struct cifs_sb_info *old = CIFS_SB(sb);
struct cifs_sb_info *new = mnt_data->cifs_sb;
bool old_set = old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
bool new_set = new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
if (old_set && new_set && !strcmp(new->prepath, old->prepath))
return 1;
else if (!old_set && !new_set)
return 1;
return 0;
}
int
cifs_match_super(struct super_block *sb, void *data)
{
......@@ -2752,7 +2794,8 @@ cifs_match_super(struct super_block *sb, void *data)
if (!match_server(tcp_srv, volume_info) ||
!match_session(ses, volume_info) ||
!match_tcon(tcon, volume_info->UNC)) {
!match_tcon(tcon, volume_info->UNC) ||
!match_prepath(sb, mnt_data)) {
rc = 0;
goto out;
}
......@@ -3168,7 +3211,7 @@ void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
}
}
void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
struct cifs_sb_info *cifs_sb)
{
INIT_DELAYED_WORK(&cifs_sb->prune_tlinks, cifs_prune_tlinks);
......@@ -3250,6 +3293,14 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
cifs_dbg(VFS, "mount option dynperm ignored if cifsacl mount option supported\n");
if (pvolume_info->prepath) {
cifs_sb->prepath = kstrdup(pvolume_info->prepath, GFP_KERNEL);
if (cifs_sb->prepath == NULL)
return -ENOMEM;
}
return 0;
}
static void
......@@ -3420,6 +3471,44 @@ cifs_get_volume_info(char *mount_data, const char *devname)
return volume_info;
}
static int
cifs_are_all_path_components_accessible(struct TCP_Server_Info *server,
unsigned int xid,
struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
char *full_path)
{
int rc;
char *s;
char sep, tmp;
sep = CIFS_DIR_SEP(cifs_sb);
s = full_path;
rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, "");
while (rc == 0) {
/* skip separators */
while (*s == sep)
s++;
if (!*s)
break;
/* next separator */
while (*s && *s != sep)
s++;
/*
* temporarily null-terminate the path at the end of
* the current component
*/
tmp = *s;
*s = 0;
rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,
full_path);
*s = tmp;
}
return rc;
}
int
cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
{
......@@ -3546,6 +3635,18 @@ remote_path_check:
kfree(full_path);
goto mount_fail_check;
}
if (rc != -EREMOTE) {
rc = cifs_are_all_path_components_accessible(server,
xid, tcon, cifs_sb,
full_path);
if (rc != 0) {
cifs_dbg(VFS, "cannot query dirs between root and final path, "
"enabling CIFS_MOUNT_USE_PREFIX_PATH\n");
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;
rc = 0;
}
}
kfree(full_path);
}
......@@ -3609,7 +3710,7 @@ mount_fail_check:
else if (ses)
cifs_put_smb_ses(ses);
else
cifs_put_tcp_session(server);
cifs_put_tcp_session(server, 0);
bdi_destroy(&cifs_sb->bdi);
}
......@@ -3809,6 +3910,7 @@ cifs_umount(struct cifs_sb_info *cifs_sb)
bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb->mountdata);
kfree(cifs_sb->prepath);
call_rcu(&cifs_sb->rcu, delayed_free);
}
......@@ -3854,6 +3956,14 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
cifs_dbg(FYI, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d\n",
server->sec_mode, server->capabilities, server->timeAdj);
if (ses->auth_key.response) {
cifs_dbg(VFS, "Free previous auth_key.response = %p\n",
ses->auth_key.response);
kfree(ses->auth_key.response);
ses->auth_key.response = NULL;
ses->auth_key.len = 0;
}
if (server->ops->sess_setup)
rc = server->ops->sess_setup(xid, ses, nls_info);
......@@ -3913,7 +4023,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info);
if (IS_ERR(ses)) {
tcon = (struct cifs_tcon *)ses;
cifs_put_tcp_session(master_tcon->ses->server);
cifs_put_tcp_session(master_tcon->ses->server, 0);
goto out;
}
......
sources/3.16/dir.c
View file @ 7e23c0f8
......@@ -84,6 +84,7 @@ build_path_from_dentry(struct dentry *direntry)
struct dentry *temp;
int namelen;
int dfsplen;
int pplen = 0;
char *full_path;
char dirsep;
struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
......@@ -95,8 +96,12 @@ build_path_from_dentry(struct dentry *direntry)
dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
pplen = cifs_sb->prepath ? strlen(cifs_sb->prepath) + 1 : 0;
cifs_bp_rename_retry:
namelen = dfsplen;
namelen = dfsplen + pplen;
seq = read_seqbegin(&rename_lock);
rcu_read_lock();
for (temp = direntry; !IS_ROOT(temp);) {
......@@ -137,7 +142,7 @@ cifs_bp_rename_retry:
}
}
rcu_read_unlock();
if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
if (namelen != dfsplen + pplen || read_seqretry(&rename_lock, seq)) {
cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n",
namelen, dfsplen);
/* presumably this is only possible if racing with a rename
......@@ -153,6 +158,17 @@ cifs_bp_rename_retry:
those safely to '/' if any are found in the middle of the prepath */
/* BB test paths to Windows with '/' in the midst of prepath */
if (pplen) {
int i;
cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath);
memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1);
full_path[dfsplen] = '\\';
for (i = 0; i < pplen-1; i++)
if (full_path[dfsplen+1+i] == '/')
full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb);
}
if (dfsplen) {
strncpy(full_path, tcon->treeName, dfsplen);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
......@@ -167,15 +183,21 @@ cifs_bp_rename_retry:
}
/*
* Don't allow path components longer than the server max.
* Don't allow the separator character in a path component.
* The VFS will not allow "/", but "\" is allowed by posix.
*/
static int
check_name(struct dentry *direntry)
check_name(struct dentry *direntry, struct cifs_tcon *tcon)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
int i;
if (unlikely(tcon->fsAttrInfo.MaxPathNameComponentLength &&
direntry->d_name.len >
le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength)))
return -ENAMETOOLONG;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
for (i = 0; i < direntry->d_name.len; i++) {
if (direntry->d_name.name[i] == '\\') {
......@@ -204,7 +226,6 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
FILE_ALL_INFO *buf = NULL;
struct inode *newinode = NULL;
int disposition;
int share_access;
struct TCP_Server_Info *server = tcon->ses->server;
struct cifs_open_parms oparms;
......@@ -219,7 +240,6 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
}
if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = cifs_posix_open(full_path, &newinode, inode->i_sb, mode,
......@@ -231,6 +251,13 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
goto cifs_create_get_file_info;
}
if (S_ISDIR(newinode->i_mode)) {
CIFSSMBClose(xid, tcon, fid->netfid);
iput(newinode);
rc = -EISDIR;
goto out;
}
if (!S_ISREG(newinode->i_mode)) {
/*
* The server may allow us to open things like
......@@ -297,8 +324,6 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
else
cifs_dbg(FYI, "Create flag not set in create function\n");
share_access = cifs_get_share_flags(oflags);
/*
* BB add processing to set equivalent of mode - e.g. via CreateX with
* ACLs
......@@ -328,7 +353,6 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
oparms.share_access = share_access;
oparms.create_options = create_options;
oparms.disposition = disposition;
oparms.path = full_path;
......@@ -404,10 +428,14 @@ cifs_create_set_dentry:
if (rc != 0) {
cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
rc);
if (server->ops->close)
server->ops->close(xid, tcon, fid);
goto out;
goto out_err;
}
if (S_ISDIR(newinode->i_mode)) {
rc = -EISDIR;
goto out_err;
}
d_drop(direntry);
d_add(direntry, newinode);
......@@ -415,6 +443,13 @@ out:
kfree(buf);
kfree(full_path);
return rc;
out_err:
if (server->ops->close)
server->ops->close(xid, tcon, fid);
if (newinode)
iput(newinode);
goto out;
}
int
......@@ -460,10 +495,6 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
return finish_no_open(file, res);
}
rc = check_name(direntry);
if (rc)
return rc;
xid = get_xid();
cifs_dbg(FYI, "parent inode = 0x%p name is: %s and dentry = 0x%p\n",
......@@ -476,6 +507,11 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
}
tcon = tlink_tcon(tlink);
rc = check_name(direntry, tcon);
if (rc)
goto out;
server = tcon->ses->server;
if (server->ops->new_lease_key)
......@@ -632,6 +668,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
goto mknod_out;
cifs_dbg(FYI, "sfu compat create special file\n");
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
......@@ -648,7 +685,6 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
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;
......@@ -723,7 +759,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
pTcon = tlink_tcon(tlink);
rc = check_name(direntry);
rc = check_name(direntry, pTcon);
if (rc)
goto lookup_out;
......
sources/3.16/file.c
View file @ 7e23c0f8
......@@ -179,7 +179,6 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
{
int rc;
int desired_access;
int share_access;
int disposition;
int create_options = CREATE_NOT_DIR;
FILE_ALL_INFO *buf;
......@@ -216,7 +215,6 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
*********************************************************************/
disposition = cifs_get_disposition(f_flags);
share_access = cifs_get_share_flags(f_flags);
/* BB pass O_SYNC flag through on file attributes .. BB */
......@@ -227,10 +225,16 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
/* O_SYNC also has bit for O_DSYNC so following check picks up either */
if (f_flags & O_SYNC)
create_options |= CREATE_WRITE_THROUGH;
if (f_flags & O_DIRECT)
create_options |= CREATE_NO_BUFFER;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
oparms.share_access = share_access;
oparms.create_options = create_options;
oparms.disposition = disposition;
oparms.path = full_path;
......@@ -309,6 +313,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
cfile->tlink = cifs_get_tlink(tlink);
INIT_WORK(&cfile->oplock_break, cifs_oplock_break);
mutex_init(&cfile->fh_mutex);
spin_lock_init(&cfile->file_info_lock);
cifs_sb_active(inode->i_sb);
......@@ -321,7 +326,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
oplock = 0;
}
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
if (fid->pending_open->oplock != CIFS_OPLOCK_NO_CHANGE && oplock)
oplock = fid->pending_open->oplock;
list_del(&fid->pending_open->olist);
......@@ -330,12 +335,13 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
server->ops->set_fid(cfile, fid, oplock);
list_add(&cfile->tlist, &tcon->openFileList);
/* if readable file instance put first in list*/
if (file->f_mode & FMODE_READ)
list_add(&cfile->flist, &cinode->openFileList);
else
list_add_tail(&cfile->flist, &cinode->openFileList);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
if (fid->purge_cache)
cifs_zap_mapping(inode);
......@@ -347,16 +353,16 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
struct cifsFileInfo *
cifsFileInfo_get(struct cifsFileInfo *cifs_file)
{
spin_lock(&cifs_file_list_lock);
spin_lock(&cifs_file->file_info_lock);
cifsFileInfo_get_locked(cifs_file);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cifs_file->file_info_lock);
return cifs_file;
}
/*
* Release a reference on the file private data. This may involve closing
* the filehandle out on the server. Must be called without holding
* cifs_file_list_lock.
* tcon->open_file_lock and cifs_file->file_info_lock.
*/
void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
{
......@@ -371,11 +377,15 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
struct cifs_pending_open open;
bool oplock_break_cancelled;
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
spin_lock(&cifs_file->file_info_lock);
if (--cifs_file->count > 0) {
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cifs_file->file_info_lock);
spin_unlock(&tcon->open_file_lock);
return;
}
spin_unlock(&cifs_file->file_info_lock);
if (server->ops->get_lease_key)
server->ops->get_lease_key(inode, &fid);
......@@ -399,7 +409,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
set_bit(CIFS_INO_INVALID_MAPPING, &cifsi->flags);
cifs_set_oplock_level(cifsi, 0);
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
oplock_break_cancelled = cancel_work_sync(&cifs_file->oplock_break);
......@@ -479,9 +490,8 @@ int cifs_open(struct inode *inode, struct file *file)
else
oplock = 0;
if (!tcon->broken_posix_open && tcon->unix_ext && cap_unix(tcon->ses)
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
if (!tcon->broken_posix_open && tcon->unix_ext &&
cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
/* can not refresh inode info since size could be stale */
rc = cifs_posix_open(full_path, &inode, inode->i_sb,
......@@ -603,7 +613,6 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
struct inode *inode;
char *full_path = NULL;
int desired_access;
int share_access;
int disposition = FILE_OPEN;
int create_options = CREATE_NOT_DIR;
struct cifs_open_parms oparms;
......@@ -645,7 +654,6 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
oplock = 0;
if (tcon->unix_ext && cap_unix(tcon->ses) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
/*
......@@ -670,7 +678,6 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
}
desired_access = cifs_convert_flags(cfile->f_flags);
share_access = cifs_get_share_flags(cfile->f_flags);
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
......@@ -681,7 +688,6 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = desired_access;
oparms.share_access = share_access;
oparms.create_options = create_options;
oparms.disposition = disposition;
oparms.path = full_path;
......@@ -773,10 +779,10 @@ int cifs_closedir(struct inode *inode, struct file *file)
server = tcon->ses->server;
cifs_dbg(FYI, "Freeing private data in close dir\n");
spin_lock(&cifs_file_list_lock);
spin_lock(&cfile->file_info_lock);
if (server->ops->dir_needs_close(cfile)) {
cfile->invalidHandle = true;
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cfile->file_info_lock);
if (server->ops->close_dir)
rc = server->ops->close_dir(xid, tcon, &cfile->fid);
else
......@@ -785,7 +791,7 @@ int cifs_closedir(struct inode *inode, struct file *file)
/* not much we can do if it fails anyway, ignore rc */
rc = 0;
} else
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cfile->file_info_lock);
buf = cfile->srch_inf.ntwrk_buf_start;
if (buf) {
......@@ -1727,12 +1733,13 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
{
struct cifsFileInfo *open_file = NULL;
struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_inode->vfs_inode.i_sb);
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
/* only filter by fsuid on multiuser mounts */
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER))
fsuid_only = false;
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
/* we could simply get the first_list_entry since write-only entries
are always at the end of the list but since the first entry might
have a close pending, we go through the whole list */
......@@ -1743,8 +1750,8 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
if (!open_file->invalidHandle) {
/* found a good file */
/* lock it so it will not be closed on us */
cifsFileInfo_get_locked(open_file);
spin_unlock(&cifs_file_list_lock);
cifsFileInfo_get(open_file);
spin_unlock(&tcon->open_file_lock);
return open_file;
} /* else might as well continue, and look for
another, or simply have the caller reopen it
......@@ -1752,7 +1759,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
} else /* write only file */
break; /* write only files are last so must be done */
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
return NULL;
}
......@@ -1761,6 +1768,7 @@ struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *cifs_inode,
{
struct cifsFileInfo *open_file, *inv_file = NULL;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
bool any_available = false;
int rc;
unsigned int refind = 0;
......@@ -1776,15 +1784,16 @@ struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *cifs_inode,
}
cifs_sb = CIFS_SB(cifs_inode->vfs_inode.i_sb);
tcon = cifs_sb_master_tcon(cifs_sb);
/* only filter by fsuid on multiuser mounts */
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER))
fsuid_only = false;
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
refind_writable:
if (refind > MAX_REOPEN_ATT) {
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
return NULL;
}
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
......@@ -1795,8 +1804,8 @@ refind_writable:
if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) {
if (!open_file->invalidHandle) {
/* found a good writable file */
cifsFileInfo_get_locked(open_file);
spin_unlock(&cifs_file_list_lock);
cifsFileInfo_get(open_file);
spin_unlock(&tcon->open_file_lock);
return open_file;
} else {
if (!inv_file)
......@@ -1812,24 +1821,24 @@ refind_writable:
if (inv_file) {
any_available = false;
cifsFileInfo_get_locked(inv_file);
cifsFileInfo_get(inv_file);
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
if (inv_file) {
rc = cifs_reopen_file(inv_file, false);
if (!rc)
return inv_file;
else {
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
list_move_tail(&inv_file->flist,
&cifs_inode->openFileList);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
cifsFileInfo_put(inv_file);
spin_lock(&cifs_file_list_lock);
++refind;
inv_file = NULL;
spin_lock(&tcon->open_file_lock);
goto refind_writable;
}
}
......@@ -2591,18 +2600,19 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
ssize_t rc = -EACCES;
loff_t lock_pos = iocb->ki_pos;
mutex_lock(&inode->i_mutex);
/*
* We need to hold the sem to be sure nobody modifies lock list
* with a brlock that prevents writing.
*/
down_read(&cinode->lock_sem);
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_iter_count(from),
server->vals->exclusive_lock_type, NULL,
CIFS_WRITE_OP)) {
rc = __generic_file_write_iter(iocb, from);
up_read(&cinode->lock_sem);
mutex_unlock(&inode->i_mutex);
if (rc > 0) {
......@@ -2613,9 +2623,9 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
rc = err;
}
} else {
up_read(&cinode->lock_sem);
mutex_unlock(&inode->i_mutex);
}
up_read(&cinode->lock_sem);
return rc;
}
......@@ -3474,15 +3484,17 @@ static int cifs_readpage(struct file *file, struct page *page)
static int is_inode_writable(struct cifsInodeInfo *cifs_inode)
{
struct cifsFileInfo *open_file;
struct cifs_tcon *tcon =
cifs_sb_master_tcon(CIFS_SB(cifs_inode->vfs_inode.i_sb));
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) {
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
return 1;
}
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
return 0;
}
......
sources/3.16/inode.c
View file @ 7e23c0f8
......@@ -445,7 +445,6 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
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;
......@@ -951,12 +950,29 @@ struct inode *cifs_root_iget(struct super_block *sb)
struct inode *inode = NULL;
long rc;
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
char *path = NULL;
int len;
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
&& cifs_sb->prepath) {
len = strlen(cifs_sb->prepath);
path = kzalloc(len + 2 /* leading sep + null */, GFP_KERNEL);
if (path == NULL)
return ERR_PTR(-ENOMEM);
path[0] = '/';
memcpy(path+1, cifs_sb->prepath, len);
} else {
path = kstrdup("", GFP_KERNEL);
if (path == NULL)
return ERR_PTR(-ENOMEM);
}
xid = get_xid();
convert_delimiter(path, CIFS_DIR_SEP(cifs_sb));
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
rc = cifs_get_inode_info_unix(&inode, path, sb, xid);
else
rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL);
if (!inode) {
inode = ERR_PTR(rc);
......@@ -984,6 +1000,7 @@ struct inode *cifs_root_iget(struct super_block *sb)
}
out:
kfree(path);
/* can not call macro free_xid here since in a void func
* TODO: This is no longer true
*/
......@@ -1078,7 +1095,6 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
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;
......@@ -1122,7 +1138,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0) {
rc = -ETXTBSY;
rc = -EBUSY;
goto undo_setattr;
}
......@@ -1141,7 +1157,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
if (rc == -ENOENT)
rc = 0;
else if (rc != 0) {
rc = -ETXTBSY;
rc = -EBUSY;
goto undo_rename;
}
set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
......@@ -1248,15 +1264,13 @@ psx_del_no_retry:
cifs_drop_nlink(inode);
} else if (rc == -ENOENT) {
d_drop(dentry);
} else if (rc == -ETXTBSY) {
} else if (rc == -EBUSY) {
if (server->ops->rename_pending_delete) {
rc = server->ops->rename_pending_delete(full_path,
dentry, xid);
if (rc == 0)
cifs_drop_nlink(inode);
}
if (rc == -ETXTBSY)
rc = -EBUSY;
} else if ((rc == -EACCES) && (dosattr == 0) && inode) {
attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
if (attrs == NULL) {
......@@ -1600,7 +1614,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
* source. Note that cross directory moves do not work with
* rename by filehandle to various Windows servers.
*/
if (rc == 0 || rc != -ETXTBSY)
if (rc == 0 || rc != -EBUSY)
goto do_rename_exit;
/* open-file renames don't work across directories */
......@@ -1611,7 +1625,6 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
oparms.cifs_sb = cifs_sb;
/* open the file to be renamed -- we need DELETE perms */
oparms.desired_access = DELETE;
oparms.share_access = FILE_SHARE_ALL;
oparms.create_options = CREATE_NOT_DIR;
oparms.disposition = FILE_OPEN;
oparms.path = from_path;
......@@ -2079,7 +2092,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
attrs->ia_valid |= ATTR_FORCE;
rc = inode_change_ok(inode, attrs);
rc = setattr_prepare(direntry, attrs);
if (rc < 0)
goto out;
......@@ -2220,7 +2233,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
attrs->ia_valid |= ATTR_FORCE;
rc = inode_change_ok(inode, attrs);
rc = setattr_prepare(direntry, attrs);
if (rc < 0) {
free_xid(xid);
return rc;
......
sources/3.16/link.c
View file @ 7e23c0f8
......@@ -333,7 +333,6 @@ cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -378,7 +377,6 @@ cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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;
......
sources/3.16/misc.c
View file @ 7e23c0f8
......@@ -120,6 +120,7 @@ tconInfoAlloc(void)
++ret_buf->tc_count;
INIT_LIST_HEAD(&ret_buf->openFileList);
INIT_LIST_HEAD(&ret_buf->tcon_list);
spin_lock_init(&ret_buf->open_file_lock);
#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
#endif
......@@ -456,7 +457,7 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
continue;
cifs_stats_inc(&tcon->stats.cifs_stats.num_oplock_brks);
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
list_for_each(tmp2, &tcon->openFileList) {
netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
......@@ -482,15 +483,15 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&pCifsInode->flags);
queue_work(cifsiod_wq,
queue_work(cifsoplockd_wq,
&netfile->oplock_break);
netfile->oplock_break_cancelled = false;
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
return true;
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
cifs_dbg(FYI, "No matching file for oplock break\n");
return true;
......@@ -639,9 +640,9 @@ backup_cred(struct cifs_sb_info *cifs_sb)
void
cifs_del_pending_open(struct cifs_pending_open *open)
{
spin_lock(&cifs_file_list_lock);
spin_lock(&tlink_tcon(open->tlink)->open_file_lock);
list_del(&open->olist);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tlink_tcon(open->tlink)->open_file_lock);
}
void
......@@ -661,7 +662,7 @@ void
cifs_add_pending_open(struct cifs_fid *fid, struct tcon_link *tlink,
struct cifs_pending_open *open)
{
spin_lock(&cifs_file_list_lock);
spin_lock(&tlink_tcon(tlink)->open_file_lock);
cifs_add_pending_open_locked(fid, tlink, open);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tlink_tcon(open->tlink)->open_file_lock);
}
sources/3.16/netmisc.c
View file @ 7e23c0f8
......@@ -62,7 +62,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
{ERRdiffdevice, -EXDEV},
{ERRnofiles, -ENOENT},
{ERRwriteprot, -EROFS},
{ERRbadshare, -ETXTBSY},
{ERRbadshare, -EBUSY},
{ERRlock, -EACCES},
{ERRunsup, -EINVAL},
{ERRnosuchshare, -ENXIO},
......@@ -966,10 +966,10 @@ struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
cifs_dbg(VFS, "illegal hours %d\n", st->Hours);
days = sd->Day;
month = sd->Month;
if ((days > 31) || (month > 12)) {
if (days < 1 || days > 31 || month < 1 || month > 12) {
cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, days);
if (month > 12)
month = 12;
days = clamp(days, 1, 31);
month = clamp(month, 1, 12);
}
month -= 1;
days += total_days_of_prev_months[month];
......
sources/3.16/ntlmssp.h
View file @ 7e23c0f8
......@@ -133,6 +133,6 @@ typedef struct _AUTHENTICATE_MESSAGE {
int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses);
void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, struct cifs_ses *ses);
int build_ntlmssp_auth_blob(unsigned char *pbuffer, u16 *buflen,
int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen,
struct cifs_ses *ses,
const struct nls_table *nls_cp);
sources/3.16/readdir.c
View file @ 7e23c0f8
......@@ -241,7 +241,7 @@ int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
char *tmpbuffer;
rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
FILE_SHARE_ALL, OPEN_REPARSE_POINT, &fid, &oplock, NULL,
OPEN_REPARSE_POINT, &fid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
......@@ -592,14 +592,14 @@ find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos,
is_dir_changed(file)) || (index_to_find < first_entry_in_buffer)) {
/* close and restart search */
cifs_dbg(FYI, "search backing up - close and restart search\n");
spin_lock(&cifs_file_list_lock);
spin_lock(&cfile->file_info_lock);
if (server->ops->dir_needs_close(cfile)) {
cfile->invalidHandle = true;
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cfile->file_info_lock);
if (server->ops->close_dir)
server->ops->close_dir(xid, tcon, &cfile->fid);
} else
spin_unlock(&cifs_file_list_lock);
spin_unlock(&cfile->file_info_lock);
if (cfile->srch_inf.ntwrk_buf_start) {
cifs_dbg(FYI, "freeing SMB ff cache buf on search rewind\n");
if (cfile->srch_inf.smallBuf)
......
sources/3.16/sess.c
View file @ 7e23c0f8
......@@ -363,19 +363,43 @@ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
sec_blob->DomainName.MaximumLength = 0;
}
/* We do not malloc the blob, it is passed in pbuffer, because its
maximum possible size is fixed and small, making this approach cleaner.
This function returns the length of the data in the blob */
int build_ntlmssp_auth_blob(unsigned char *pbuffer,
static int size_of_ntlmssp_blob(struct cifs_ses *ses)
{
int sz = sizeof(AUTHENTICATE_MESSAGE) + ses->auth_key.len
- CIFS_SESS_KEY_SIZE + CIFS_CPHTXT_SIZE + 2;
if (ses->domainName)
sz += 2 * strnlen(ses->domainName, CIFS_MAX_DOMAINNAME_LEN);
else
sz += 2;
if (ses->user_name)
sz += 2 * strnlen(ses->user_name, CIFS_MAX_USERNAME_LEN);
else
sz += 2;
return sz;
}
int build_ntlmssp_auth_blob(unsigned char **pbuffer,
u16 *buflen,
struct cifs_ses *ses,
const struct nls_table *nls_cp)
{
int rc;
AUTHENTICATE_MESSAGE *sec_blob = (AUTHENTICATE_MESSAGE *)pbuffer;
AUTHENTICATE_MESSAGE *sec_blob;
__u32 flags;
unsigned char *tmp;
rc = setup_ntlmv2_rsp(ses, nls_cp);
if (rc) {
cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
*buflen = 0;
goto setup_ntlmv2_ret;
}
*pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);
sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;
memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
sec_blob->MessageType = NtLmAuthenticate;
......@@ -390,7 +414,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
flags |= NTLMSSP_NEGOTIATE_KEY_XCH;
}
tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE);
tmp = *pbuffer + sizeof(AUTHENTICATE_MESSAGE);
sec_blob->NegotiateFlags = cpu_to_le32(flags);
sec_blob->LmChallengeResponse.BufferOffset =
......@@ -398,12 +422,9 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
sec_blob->LmChallengeResponse.Length = 0;
sec_blob->LmChallengeResponse.MaximumLength = 0;
sec_blob->NtChallengeResponse.BufferOffset = cpu_to_le32(tmp - pbuffer);
rc = setup_ntlmv2_rsp(ses, nls_cp);
if (rc) {
cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc);
goto setup_ntlmv2_ret;
}
sec_blob->NtChallengeResponse.BufferOffset =
cpu_to_le32(tmp - *pbuffer);
if (ses->user_name != NULL) {
memcpy(tmp, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
ses->auth_key.len - CIFS_SESS_KEY_SIZE);
tmp += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
......@@ -412,25 +433,32 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
sec_blob->NtChallengeResponse.MaximumLength =
cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
} else {
/*
* don't send an NT Response for anonymous access
*/
sec_blob->NtChallengeResponse.Length = 0;
sec_blob->NtChallengeResponse.MaximumLength = 0;
}
if (ses->domainName == NULL) {
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->DomainName.Length = 0;
sec_blob->DomainName.MaximumLength = 0;
tmp += 2;
} else {
int len;
len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
CIFS_MAX_USERNAME_LEN, nls_cp);
CIFS_MAX_DOMAINNAME_LEN, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->DomainName.Length = cpu_to_le16(len);
sec_blob->DomainName.MaximumLength = cpu_to_le16(len);
tmp += len;
}
if (ses->user_name == NULL) {
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->UserName.Length = 0;
sec_blob->UserName.MaximumLength = 0;
tmp += 2;
......@@ -439,13 +467,13 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name,
CIFS_MAX_USERNAME_LEN, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->UserName.Length = cpu_to_le16(len);
sec_blob->UserName.MaximumLength = cpu_to_le16(len);
tmp += len;
}
sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->WorkstationName.Length = 0;
sec_blob->WorkstationName.MaximumLength = 0;
tmp += 2;
......@@ -454,19 +482,19 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer,
(ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_EXTENDED_SEC))
&& !calc_seckey(ses)) {
memcpy(tmp, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE);
sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->SessionKey.Length = cpu_to_le16(CIFS_CPHTXT_SIZE);
sec_blob->SessionKey.MaximumLength =
cpu_to_le16(CIFS_CPHTXT_SIZE);
tmp += CIFS_CPHTXT_SIZE;
} else {
sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer);
sec_blob->SessionKey.Length = 0;
sec_blob->SessionKey.MaximumLength = 0;
}
*buflen = tmp - *pbuffer;
setup_ntlmv2_ret:
*buflen = tmp - pbuffer;
return rc;
}
......@@ -539,7 +567,7 @@ CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
struct key *spnego_key = NULL;
__le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */
u16 blob_len;
char *ntlmsspblob = NULL;
unsigned char *ntlmsspblob = NULL;
if (ses == NULL) {
WARN(1, "%s: ses == NULL!", __func__);
......@@ -624,8 +652,8 @@ ssetup_ntlmssp_authenticate:
pSMB->req.hdr.Flags2 &= ~SMBFLG2_UNICODE;
if (ses->user_name != NULL) {
/* no capabilities flags in old lanman negotiation */
pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE);
/* Calculate hash with password and copy into bcc_ptr.
......@@ -633,13 +661,15 @@ ssetup_ntlmssp_authenticate:
* security mode bit in Negottiate Protocol response states
* to use challenge/response method (i.e. Password bit is 1).
*/
rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
true : false, lnm_session_key);
memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
bcc_ptr += CIFS_AUTH_RESP_SIZE;
} else {
pSMB->old_req.PasswordLength = 0;
}
/* can not sign if LANMAN negotiated so no need
to calculate signing key? but what if server
......@@ -652,6 +682,7 @@ ssetup_ntlmssp_authenticate:
#endif
} else if (type == NTLM) {
pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
if (ses->user_name != NULL) {
pSMB->req_no_secext.CaseInsensitivePasswordLength =
cpu_to_le16(CIFS_AUTH_RESP_SIZE);
pSMB->req_no_secext.CaseSensitivePasswordLength =
......@@ -672,6 +703,10 @@ ssetup_ntlmssp_authenticate:
memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
CIFS_AUTH_RESP_SIZE);
bcc_ptr += CIFS_AUTH_RESP_SIZE;
} else {
pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
pSMB->req_no_secext.CaseSensitivePasswordLength = 0;
}
if (ses->capabilities & CAP_UNICODE) {
/* unicode strings must be word aligned */
......@@ -688,13 +723,14 @@ ssetup_ntlmssp_authenticate:
/* LM2 password would be here if we supported it */
pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
if (ses->user_name != NULL) {
/* calculate nlmv2 response and session key */
rc = setup_ntlmv2_rsp(ses, nls_cp);
if (rc) {
cifs_dbg(VFS, "Error %d during NTLMv2 authentication\n",
rc);
cifs_dbg(VFS, "Error %d during NTLMv2 authentication\n", rc);
goto ssetup_exit;
}
memcpy(bcc_ptr, ses->auth_key.response + CIFS_SESS_KEY_SIZE,
ses->auth_key.len - CIFS_SESS_KEY_SIZE);
bcc_ptr += ses->auth_key.len - CIFS_SESS_KEY_SIZE;
......@@ -704,6 +740,9 @@ ssetup_ntlmssp_authenticate:
*/
pSMB->req_no_secext.CaseSensitivePasswordLength =
cpu_to_le16(ses->auth_key.len - CIFS_SESS_KEY_SIZE);
} else {
pSMB->req_no_secext.CaseSensitivePasswordLength = 0;
}
if (ses->capabilities & CAP_UNICODE) {
if (iov[0].iov_len % 2) {
......@@ -790,20 +829,7 @@ ssetup_ntlmssp_authenticate:
cpu_to_le16(sizeof(NEGOTIATE_MESSAGE));
break;
case NtLmAuthenticate:
/*
* 5 is an empirical value, large enough to hold
* authenticate message plus max 10 of av paris,
* domain, user, workstation names, flags, etc.
*/
ntlmsspblob = kzalloc(
5*sizeof(struct _AUTHENTICATE_MESSAGE),
GFP_KERNEL);
if (!ntlmsspblob) {
rc = -ENOMEM;
goto ssetup_exit;
}
rc = build_ntlmssp_auth_blob(ntlmsspblob,
rc = build_ntlmssp_auth_blob(&ntlmsspblob,
&blob_len, ses, nls_cp);
if (rc)
goto ssetup_exit;
......
sources/3.16/smb1ops.c
View file @ 7e23c0f8
......@@ -576,7 +576,6 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -813,7 +812,6 @@ smb_set_file_info(struct inode *inode, const char *full_path,
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;
......@@ -858,8 +856,13 @@ cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid *fid, __u16 search_flags,
struct cifs_search_info *srch_inf)
{
return CIFSFindFirst(xid, tcon, path, cifs_sb,
int rc;
rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
&fid->netfid, search_flags, srch_inf, true);
if (rc)
cifs_dbg(FYI, "find first failed=%d\n", rc);
return rc;
}
static int
......@@ -981,7 +984,6 @@ cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -1018,6 +1020,15 @@ cifs_dir_needs_close(struct cifsFileInfo *cfile)
return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
}
static bool
cifs_can_echo(struct TCP_Server_Info *server)
{
if (server->tcpStatus == CifsGood)
return true;
return false;
}
struct smb_version_operations smb1_operations = {
.send_cancel = send_nt_cancel,
.compare_fids = cifs_compare_fids,
......@@ -1051,6 +1062,7 @@ struct smb_version_operations smb1_operations = {
.get_dfs_refer = CIFSGetDFSRefer,
.qfs_tcon = cifs_qfs_tcon,
.is_path_accessible = cifs_is_path_accessible,
.can_echo = cifs_can_echo,
.query_path_info = cifs_query_path_info,
.query_file_info = cifs_query_file_info,
.get_srv_inum = cifs_get_srv_inum,
......
sources/3.16/smb2file.c
View file @ 7e23c0f8
......@@ -241,7 +241,7 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
* and check it for zero before using.
*/
max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
if (!max_buf) {
if (max_buf < sizeof(struct smb2_lock_element)) {
free_xid(xid);
return -EINVAL;
}
......
sources/3.16/smb2glob.h
View file @ 7e23c0f8
......@@ -44,6 +44,7 @@
#define SMB2_OP_DELETE 7
#define SMB2_OP_HARDLINK 8
#define SMB2_OP_SET_EOF 9
#define SMB2_OP_RMDIR 10
/* Used when constructing chained read requests. */
#define CHAINED_REQUEST 1
......@@ -60,4 +61,14 @@
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
/*
* Maximum number of credits to keep available.
* This value is chosen somewhat arbitrarily. The Windows client
* defaults to 128 credits, the Windows server allows clients up to
* 512 credits, and the NetApp server does not limit clients at all.
* Choose a high enough value such that the client shouldn't limit
* performance.
*/
#define SMB2_MAX_CREDITS_AVAILABLE 32000
#endif /* _SMB2_GLOB_H */
sources/3.16/smb2inode.c
View file @ 7e23c0f8
......@@ -55,7 +55,6 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = desired_access;
oparms.share_access = FILE_SHARE_ALL;
oparms.disposition = create_disposition;
oparms.create_options = create_options;
oparms.fid = &fid;
......@@ -81,6 +80,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
* SMB2_open() call.
*/
break;
case SMB2_OP_RMDIR:
tmprc = SMB2_rmdir(xid, tcon, fid.persistent_fid,
fid.volatile_fid);
break;
case SMB2_OP_RENAME:
tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,
fid.volatile_fid, (__le16 *)data);
......@@ -192,8 +195,8 @@ smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
struct cifs_sb_info *cifs_sb)
{
return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE,
NULL, SMB2_OP_DELETE);
CREATE_NOT_FILE,
NULL, SMB2_OP_RMDIR);
}
int
......@@ -263,9 +266,15 @@ smb2_set_file_info(struct inode *inode, const char *full_path,
struct tcon_link *tlink;
int rc;
if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
(buf->LastWriteTime == 0) && (buf->ChangeTime) &&
(buf->Attributes == 0))
return 0; /* would be a no op, no sense sending this */
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path,
FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf,
SMB2_OP_SET_INFO);
......
sources/3.16/smb2maperror.c
View file @ 7e23c0f8
......@@ -358,7 +358,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
{STATUS_PORT_CONNECTION_REFUSED, -ECONNREFUSED,
"STATUS_PORT_CONNECTION_REFUSED"},
{STATUS_INVALID_PORT_HANDLE, -EIO, "STATUS_INVALID_PORT_HANDLE"},
{STATUS_SHARING_VIOLATION, -ETXTBSY, "STATUS_SHARING_VIOLATION"},
{STATUS_SHARING_VIOLATION, -EBUSY, "STATUS_SHARING_VIOLATION"},
{STATUS_QUOTA_EXCEEDED, -EDQUOT, "STATUS_QUOTA_EXCEEDED"},
{STATUS_INVALID_PAGE_PROTECTION, -EIO,
"STATUS_INVALID_PAGE_PROTECTION"},
......
sources/3.16/smb2misc.c
View file @ 7e23c0f8
......@@ -447,7 +447,7 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
else
cfile->oplock_break_cancelled = true;
queue_work(cifsiod_wq, &cfile->oplock_break);
queue_work(cifsoplockd_wq, &cfile->oplock_break);
kfree(lw);
return true;
}
......@@ -502,19 +502,19 @@ smb2_is_valid_lease_break(char *buffer)
list_for_each(tmp1, &server->smb_ses_list) {
ses = list_entry(tmp1, struct cifs_ses, smb_ses_list);
spin_lock(&cifs_file_list_lock);
list_for_each(tmp2, &ses->tcon_list) {
tcon = list_entry(tmp2, struct cifs_tcon,
tcon_list);
spin_lock(&tcon->open_file_lock);
cifs_stats_inc(
&tcon->stats.cifs_stats.num_oplock_brks);
if (smb2_tcon_has_lease(tcon, rsp, lw)) {
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
return true;
}
spin_unlock(&tcon->open_file_lock);
}
spin_unlock(&cifs_file_list_lock);
}
}
spin_unlock(&cifs_tcp_ses_lock);
......@@ -556,7 +556,7 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
cifs_stats_inc(&tcon->stats.cifs_stats.num_oplock_brks);
spin_lock(&cifs_file_list_lock);
spin_lock(&tcon->open_file_lock);
list_for_each(tmp2, &tcon->openFileList) {
cfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
......@@ -568,7 +568,7 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
cifs_dbg(FYI, "file id match, oplock break\n");
cinode = CIFS_I(cfile->dentry->d_inode);
spin_lock(&cfile->file_info_lock);
if (!CIFS_CACHE_WRITE(cinode) &&
rsp->OplockLevel == SMB2_OPLOCK_LEVEL_NONE)
cfile->oplock_break_cancelled = true;
......@@ -590,14 +590,15 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
clear_bit(
CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
&cinode->flags);
spin_unlock(&cfile->file_info_lock);
queue_work(cifsoplockd_wq,
&cfile->oplock_break);
queue_work(cifsiod_wq, &cfile->oplock_break);
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
return true;
}
spin_unlock(&cifs_file_list_lock);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
cifs_dbg(FYI, "No matching file for oplock break\n");
return true;
......@@ -607,3 +608,47 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
cifs_dbg(FYI, "Can not process oplock break for non-existent connection\n");
return false;
}
void
smb2_cancelled_close_fid(struct work_struct *work)
{
struct close_cancelled_open *cancelled = container_of(work,
struct close_cancelled_open, work);
cifs_dbg(VFS, "Close unmatched open\n");
SMB2_close(0, cancelled->tcon, cancelled->fid.persistent_fid,
cancelled->fid.volatile_fid);
cifs_put_tcon(cancelled->tcon);
kfree(cancelled);
}
int
smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server)
{
struct smb2_hdr *hdr = (struct smb2_hdr *)buffer;
struct smb2_create_rsp *rsp = (struct smb2_create_rsp *)buffer;
struct cifs_tcon *tcon;
struct close_cancelled_open *cancelled;
if (hdr->Command != SMB2_CREATE || hdr->Status != STATUS_SUCCESS)
return 0;
cancelled = kzalloc(sizeof(*cancelled), GFP_KERNEL);
if (!cancelled)
return -ENOMEM;
tcon = smb2_find_smb_tcon(server, hdr->SessionId, hdr->TreeId);
if (!tcon) {
kfree(cancelled);
return -ENOENT;
}
cancelled->fid.persistent_fid = rsp->PersistentFileId;
cancelled->fid.volatile_fid = rsp->VolatileFileId;
cancelled->tcon = tcon;
INIT_WORK(&cancelled->work, smb2_cancelled_close_fid);
queue_work(cifsiod_wq, &cancelled->work);
return 0;
}
sources/3.16/smb2ops.c
View file @ 7e23c0f8
......@@ -228,7 +228,7 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
le64_to_cpu(out_buf->LinkSpeed));
} else
cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
kfree(out_buf);
return rc;
}
#endif /* STATS2 */
......@@ -244,7 +244,6 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
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;
......@@ -279,7 +278,6 @@ smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
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;
......@@ -313,7 +311,6 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -643,6 +640,7 @@ smb2_clone_range(const unsigned int xid,
cchunk_out:
kfree(pcchunk);
kfree(retbuf);
return rc;
}
......@@ -723,7 +721,6 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
oparms.share_access = FILE_SHARE_ALL;
oparms.disposition = FILE_OPEN;
oparms.create_options = 0;
oparms.fid = fid;
......@@ -732,7 +729,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
kfree(utf16_path);
if (rc) {
cifs_dbg(VFS, "open dir failed\n");
cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
return rc;
}
......@@ -742,7 +739,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
fid->volatile_fid, 0, srch_inf);
if (rc) {
cifs_dbg(VFS, "query directory failed\n");
cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
return rc;
......@@ -811,7 +808,6 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -860,9 +856,12 @@ smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
static void
smb2_new_lease_key(struct cifs_fid *fid)
{
get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
generate_random_uuid(fid->lease_key);
}
#define SMB2_SYMLINK_STRUCT_SIZE \
(sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
static int
smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, char **target_path,
......@@ -875,7 +874,10 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid fid;
struct smb2_err_rsp *err_buf = NULL;
struct smb2_symlink_err_rsp *symlink;
unsigned int sub_len, sub_offset;
unsigned int sub_len;
unsigned int sub_offset;
unsigned int print_len;
unsigned int print_offset;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
......@@ -885,7 +887,6 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
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;
......@@ -897,11 +898,33 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
kfree(utf16_path);
return -ENOENT;
}
if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
kfree(utf16_path);
return -ENOENT;
}
/* open must fail on symlink - reset rc */
rc = 0;
symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
sub_len = le16_to_cpu(symlink->SubstituteNameLength);
sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
print_len = le16_to_cpu(symlink->PrintNameLength);
print_offset = le16_to_cpu(symlink->PrintNameOffset);
if (get_rfc1002_length(err_buf) + 4 <
SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
kfree(utf16_path);
return -ENOENT;
}
if (get_rfc1002_length(err_buf) + 4 <
SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
kfree(utf16_path);
return -ENOENT;
}
*target_path = cifs_strndup_from_utf16(
(char *)symlink->PathBuffer + sub_offset,
sub_len, true, cifs_sb->local_nls);
......@@ -1140,6 +1163,7 @@ struct smb_version_operations smb20_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
......@@ -1216,6 +1240,7 @@ struct smb_version_operations smb21_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
......@@ -1293,6 +1318,7 @@ 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,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
......
sources/3.16/smb2pdu.c
View file @ 7e23c0f8
......@@ -102,7 +102,21 @@ smb2_hdr_assemble(struct smb2_hdr *hdr, __le16 smb2_cmd /* command */ ,
hdr->ProtocolId[3] = 'B';
hdr->StructureSize = cpu_to_le16(64);
hdr->Command = smb2_cmd;
hdr->CreditRequest = cpu_to_le16(2); /* BB make this dynamic */
if (tcon && tcon->ses && tcon->ses->server) {
struct TCP_Server_Info *server = tcon->ses->server;
spin_lock(&server->req_lock);
/* Request up to 2 credits but don't go over the limit. */
if (server->credits >= SMB2_MAX_CREDITS_AVAILABLE)
hdr->CreditRequest = cpu_to_le16(0);
else
hdr->CreditRequest = cpu_to_le16(
min_t(int, SMB2_MAX_CREDITS_AVAILABLE -
server->credits, 2));
spin_unlock(&server->req_lock);
} else {
hdr->CreditRequest = cpu_to_le16(2);
}
hdr->ProcessId = cpu_to_le32((__u16)current->tgid);
if (!tcon)
......@@ -268,7 +282,7 @@ out:
case SMB2_CHANGE_NOTIFY:
case SMB2_QUERY_INFO:
case SMB2_SET_INFO:
return -EAGAIN;
rc = -EAGAIN;
}
unload_nls(nls_codepage);
return rc;
......@@ -465,22 +479,29 @@ 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;
struct validate_negotiate_info_rsp *pneg_rsp = NULL;
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
* can not sign it (ie are not known user). Even if signing is not
* required (enabled but not negotiated), in those cases we 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
* Having validation of negotiate info helps reduce attack vectors.
*/
if (tcon->ses->server->sign == false)
if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
return 0; /* validation requires signing */
if (tcon->ses->user_name == NULL) {
cifs_dbg(FYI, "Can't validate negotiate: null user mount\n");
return 0; /* validation requires signing */
}
if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
cifs_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n");
vneg_inbuf.Capabilities =
cpu_to_le32(tcon->ses->server->vals->req_capabilities);
memcpy(vneg_inbuf.Guid, tcon->ses->server->client_guid,
......@@ -510,8 +531,13 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
}
if (rsplen != sizeof(struct validate_negotiate_info_rsp)) {
cifs_dbg(VFS, "invalid size of protocol negotiate response\n");
return -EIO;
cifs_dbg(VFS, "invalid protocol negotiate response size: %d\n",
rsplen);
/* relax check since Mac returns max bufsize allowed on ioctl */
if ((rsplen > CIFSMaxBufSize)
|| (rsplen < sizeof(struct validate_negotiate_info_rsp)))
goto err_rsp_free;
}
/* check validate negotiate info response matches what we got earlier */
......@@ -530,10 +556,13 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
/* validate negotiate successful */
cifs_dbg(FYI, "validate negotiate info successful\n");
kfree(pneg_rsp);
return 0;
vneg_out:
cifs_dbg(VFS, "protocol revalidation - security settings mismatch\n");
err_rsp_free:
kfree(pneg_rsp);
return -EIO;
}
......@@ -550,8 +579,9 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
struct TCP_Server_Info *server = ses->server;
u16 blob_length = 0;
char *security_blob;
char *ntlmssp_blob = NULL;
unsigned char *ntlmssp_blob = NULL;
bool use_spnego = false; /* else use raw ntlmssp */
u64 previous_session = ses->Suid;
cifs_dbg(FYI, "Session Setup\n");
......@@ -588,6 +618,10 @@ ssetup_ntlmssp_authenticate:
return rc;
req->hdr.SessionId = 0; /* First session, not a reauthenticate */
/* if reconnect, we need to send previous sess id, otherwise it is 0 */
req->PreviousSessionId = previous_session;
req->VcNumber = 0; /* MBZ */
/* to enable echos and oplocks */
req->hdr.CreditRequest = cpu_to_le16(3);
......@@ -631,13 +665,7 @@ ssetup_ntlmssp_authenticate:
}
} else if (phase == NtLmAuthenticate) {
req->hdr.SessionId = ses->Suid;
ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500,
GFP_KERNEL);
if (ntlmssp_blob == NULL) {
rc = -ENOMEM;
goto ssetup_exit;
}
rc = build_ntlmssp_auth_blob(ntlmssp_blob, &blob_length, ses,
rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses,
nls_cp);
if (rc) {
cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n",
......@@ -830,9 +858,6 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
else
return -EIO;
if (tcon && tcon->bad_network_name)
return -ENOENT;
unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL);
if (unc_path == NULL)
return -ENOMEM;
......@@ -844,6 +869,10 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
return -EINVAL;
}
/* SMB2 TREE_CONNECT request must be called with TreeId == 0 */
if (tcon)
tcon->tid = 0;
rc = small_smb2_init(SMB2_TREE_CONNECT, tcon, (void **) &req);
if (rc) {
kfree(unc_path);
......@@ -886,15 +915,19 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
goto tcon_exit;
}
if (rsp->ShareType & SMB2_SHARE_TYPE_DISK)
switch (rsp->ShareType) {
case SMB2_SHARE_TYPE_DISK:
cifs_dbg(FYI, "connection to disk share\n");
else if (rsp->ShareType & SMB2_SHARE_TYPE_PIPE) {
break;
case SMB2_SHARE_TYPE_PIPE:
tcon->ipc = true;
cifs_dbg(FYI, "connection to pipe share\n");
} else if (rsp->ShareType & SMB2_SHARE_TYPE_PRINT) {
tcon->print = true;
break;
case SMB2_SHARE_TYPE_PRINT:
tcon->ipc = true;
cifs_dbg(FYI, "connection to printer\n");
} else {
break;
default:
cifs_dbg(VFS, "unknown share type %d\n", rsp->ShareType);
rc = -EOPNOTSUPP;
goto tcon_error_exit;
......@@ -922,8 +955,6 @@ 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;
}
......@@ -1094,7 +1125,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
struct TCP_Server_Info *server;
struct cifs_tcon *tcon = oparms->tcon;
struct cifs_ses *ses = tcon->ses;
struct kvec iov[4];
struct kvec iov[4] = {{NULL, 0}};
int resp_buftype;
int uni_path_len;
__le16 *copy_path = NULL;
......@@ -1122,7 +1153,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
req->DesiredAccess = cpu_to_le32(oparms->desired_access);
/* File attributes ignored on open (used in create though) */
req->FileAttributes = cpu_to_le32(file_attributes);
req->ShareAccess = cpu_to_le32(oparms->share_access);
req->ShareAccess = FILE_SHARE_ALL_LE;
req->CreateDisposition = cpu_to_le32(oparms->disposition);
req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK);
uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2;
......@@ -1195,7 +1226,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (rc != 0) {
cifs_stats_fail_inc(tcon, SMB2_CREATE_HE);
if (err_buf)
if (err_buf && rsp)
*err_buf = kmemdup(rsp, get_rfc1002_length(rsp) + 4,
GFP_KERNEL);
goto creat_exit;
......@@ -1281,8 +1312,12 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
* than one credit. Windows typically sets this smaller, but for some
* ioctls it may be useful to allow server to send more. No point
* limiting what the server can send as long as fits in one credit
* Unfortunately - we can not handle more than CIFS_MAX_MSG_SIZE
* (by default, note that it can be overridden to make max larger)
* in responses (except for read responses which can be bigger.
* We may want to bump this limit up
*/
req->MaxOutputResponse = cpu_to_le32(0xFF00); /* < 64K uses 1 credit */
req->MaxOutputResponse = cpu_to_le32(CIFSMaxBufSize);
if (is_fsctl)
req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);
......@@ -1307,6 +1342,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
} else
iov[0].iov_len = get_rfc1002_length(req) + 4;
/* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */
if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO)
req->hdr.Flags |= SMB2_FLAGS_SIGNED;
rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base;
......@@ -1585,6 +1623,54 @@ smb2_echo_callback(struct mid_q_entry *mid)
add_credits(server, credits_received, CIFS_ECHO_OP);
}
void smb2_reconnect_server(struct work_struct *work)
{
struct TCP_Server_Info *server = container_of(work,
struct TCP_Server_Info, reconnect.work);
struct cifs_ses *ses;
struct cifs_tcon *tcon, *tcon2;
struct list_head tmp_list;
int tcon_exist = false;
/* Prevent simultaneous reconnects that can corrupt tcon->rlist list */
mutex_lock(&server->reconnect_mutex);
INIT_LIST_HEAD(&tmp_list);
cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
if (tcon->need_reconnect) {
tcon->tc_count++;
list_add_tail(&tcon->rlist, &tmp_list);
tcon_exist = true;
}
}
}
/*
* Get the reference to server struct to be sure that the last call of
* cifs_put_tcon() in the loop below won't release the server pointer.
*/
if (tcon_exist)
server->srv_count++;
spin_unlock(&cifs_tcp_ses_lock);
list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) {
smb2_reconnect(SMB2_ECHO, tcon);
list_del_init(&tcon->rlist);
cifs_put_tcon(tcon);
}
cifs_dbg(FYI, "Reconnecting tcons finished\n");
mutex_unlock(&server->reconnect_mutex);
/* now we can safely release srv struct */
if (tcon_exist)
cifs_put_tcp_session(server, 1);
}
int
SMB2_echo(struct TCP_Server_Info *server)
{
......@@ -1596,6 +1682,12 @@ SMB2_echo(struct TCP_Server_Info *server)
cifs_dbg(FYI, "In echo request\n");
if (server->tcpStatus == CifsNeedNegotiate) {
/* No need to send echo on newly established connections */
queue_delayed_work(cifsiod_wq, &server->reconnect, 0);
return rc;
}
rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req);
if (rc)
return rc;
......@@ -2297,6 +2389,22 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
}
int
SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid)
{
__u8 delete_pending = 1;
void *data;
unsigned int size;
data = &delete_pending;
size = 1; /* sizeof __u8 */
return send_set_info(xid, tcon, persistent_fid, volatile_fid,
current->tgid, FILE_DISPOSITION_INFORMATION, 1, &data,
&size);
}
int
SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, __le16 *target_file)
{
......@@ -2392,8 +2500,8 @@ copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf,
kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) *
le32_to_cpu(pfs_inf->SectorsPerAllocationUnit);
kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits);
kst->f_bfree = le64_to_cpu(pfs_inf->ActualAvailableAllocationUnits);
kst->f_bavail = le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits);
kst->f_bfree = kst->f_bavail =
le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits);
return;
}
......
sources/3.16/smb2pdu.h
View file @ 7e23c0f8
......@@ -82,8 +82,8 @@
#define NUMBER_OF_SMB2_COMMANDS 0x0013
/* BB FIXME - analyze following length BB */
#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */
/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */
#define MAX_SMB2_HDR_SIZE 0x00b0
#define SMB2_PROTO_NUMBER __constant_cpu_to_le32(0x424d53fe)
......@@ -245,7 +245,7 @@ struct smb2_sess_setup_req {
__le32 Channel;
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
__le64 PreviousSessionId;
__u64 PreviousSessionId;
__u8 Buffer[1]; /* variable length GSS security buffer */
} __packed;
......
sources/3.16/smb2proto.h
View file @ 7e23c0f8
......@@ -47,6 +47,10 @@ extern struct mid_q_entry *smb2_setup_request(struct cifs_ses *ses,
struct smb_rqst *rqst);
extern struct mid_q_entry *smb2_setup_async_request(
struct TCP_Server_Info *server, struct smb_rqst *rqst);
extern struct cifs_ses *smb2_find_smb_ses(struct TCP_Server_Info *server,
__u64 ses_id);
extern struct cifs_tcon *smb2_find_smb_tcon(struct TCP_Server_Info *server,
__u64 ses_id, __u32 tid);
extern int smb2_calc_signature(struct smb_rqst *rqst,
struct TCP_Server_Info *server);
extern int smb3_calc_signature(struct smb_rqst *rqst,
......@@ -89,6 +93,7 @@ extern int smb2_open_file(const unsigned int xid,
extern int smb2_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
extern int smb2_push_mandatory_locks(struct cifsFileInfo *cfile);
extern void smb2_reconnect_server(struct work_struct *work);
/*
* SMB2 Worker functions - most of protocol specific implementation details
......@@ -134,6 +139,8 @@ extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
__le16 *target_file);
extern int SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid);
extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
__le16 *target_file);
......@@ -148,6 +155,9 @@ extern int SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
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_handle_cancelled_mid(char *buffer,
struct TCP_Server_Info *server);
void smb2_cancelled_close_fid(struct work_struct *work);
extern int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
struct kstatfs *FSData);
......
sources/3.16/smb2transport.c
View file @ 7e23c0f8
......@@ -115,22 +115,68 @@ smb3_crypto_shash_allocate(struct TCP_Server_Info *server)
}
static struct cifs_ses *
smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server)
smb2_find_smb_ses_unlocked(struct TCP_Server_Info *server, __u64 ses_id)
{
struct cifs_ses *ses;
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
if (ses->Suid != smb2hdr->SessionId)
if (ses->Suid != ses_id)
continue;
spin_unlock(&cifs_tcp_ses_lock);
return ses;
}
return NULL;
}
struct cifs_ses *
smb2_find_smb_ses(struct TCP_Server_Info *server, __u64 ses_id)
{
struct cifs_ses *ses;
spin_lock(&cifs_tcp_ses_lock);
ses = smb2_find_smb_ses_unlocked(server, ses_id);
spin_unlock(&cifs_tcp_ses_lock);
return ses;
}
static struct cifs_tcon *
smb2_find_smb_sess_tcon_unlocked(struct cifs_ses *ses, __u32 tid)
{
struct cifs_tcon *tcon;
list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
if (tcon->tid != tid)
continue;
++tcon->tc_count;
return tcon;
}
return NULL;
}
/*
* Obtain tcon corresponding to the tid in the given
* cifs_ses
*/
struct cifs_tcon *
smb2_find_smb_tcon(struct TCP_Server_Info *server, __u64 ses_id, __u32 tid)
{
struct cifs_ses *ses;
struct cifs_tcon *tcon;
spin_lock(&cifs_tcp_ses_lock);
ses = smb2_find_smb_ses_unlocked(server, ses_id);
if (!ses) {
spin_unlock(&cifs_tcp_ses_lock);
return NULL;
}
tcon = smb2_find_smb_sess_tcon_unlocked(ses, tid);
spin_unlock(&cifs_tcp_ses_lock);
return tcon;
}
int
smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
......@@ -143,7 +189,7 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
struct cifs_ses *ses;
ses = smb2_find_smb_ses(smb2_pdu, server);
ses = smb2_find_smb_ses(server, smb2_pdu->SessionId);
if (!ses) {
cifs_dbg(VFS, "%s: Could not find session\n", __func__);
return 0;
......@@ -314,7 +360,7 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
struct cifs_ses *ses;
ses = smb2_find_smb_ses(smb2_pdu, server);
ses = smb2_find_smb_ses(server, smb2_pdu->SessionId);
if (!ses) {
cifs_dbg(VFS, "%s: Could not find session\n", __func__);
return 0;
......
sources/3.16/transport.c
View file @ 7e23c0f8
......@@ -773,9 +773,11 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
rc = wait_for_response(ses->server, midQ);
if (rc != 0) {
cifs_dbg(FYI, "Cancelling wait for mid %llu\n", midQ->mid);
send_cancel(ses->server, buf, midQ);
spin_lock(&GlobalMid_Lock);
if (midQ->mid_state == MID_REQUEST_SUBMITTED) {
midQ->mid_flags |= MID_WAIT_CANCELLED;
midQ->callback = DeleteMidQEntry;
spin_unlock(&GlobalMid_Lock);
cifs_small_buf_release(buf);
......
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