netapi32: Wait for and reap smbpasswd child process.

dlls/netapi32/access.c

@@ -21,6 +21,12 @@
 #include "config.h"
 #include <stdarg.h>
 #include <fcntl.h>
+#ifdef HAVE_SYS_ERRNO_H
+#include <sys/errno.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -872,7 +878,7 @@ NET_API_STATUS WINAPI NetUserModalsGet(
     return NERR_Success;
 }
 
-static int fork_smbpasswd( char * const argv[] )
+static int fork_smbpasswd( char * const argv[], pid_t *pid )
 {
 #ifdef HAVE_FORK
     int pipe_out[2];
@@ -881,7 +887,7 @@ static int fork_smbpasswd( char * const argv[] )
     fcntl( pipe_out[0], F_SETFD, FD_CLOEXEC );
     fcntl( pipe_out[1], F_SETFD, FD_CLOEXEC );
 
-    switch (fork())
+    switch ((*pid = fork()))
     {
     case -1:
         close( pipe_out[0] );
@@ -893,7 +899,7 @@ static int fork_smbpasswd( char * const argv[] )
         close( pipe_out[1] );
         execvp( "smbpasswd", argv );
         ERR( "can't execute smbpasswd, is it installed?\n" );
-        return -1;
+        _exit(1);
     default:
         close( pipe_out[0] );
         break;
@@ -917,12 +923,14 @@ static char *strdup_unixcp( const WCHAR *str )
 static NET_API_STATUS change_password_smb( LPCWSTR domainname, LPCWSTR username,
     LPCWSTR oldpassword, LPCWSTR newpassword )
 {
+    NET_API_STATUS ret = NERR_Success;
     static char option_silent[] = "-s";
     static char option_user[] = "-U";
     static char option_remote[] = "-r";
     static char smbpasswd[] = "smbpasswd";
     int pipe_out;
-    char *server = NULL, *user, *argv[7], *old, *new;
+    pid_t pid;
+    char *server = NULL, *user, *argv[7], *old, *new = NULL;
 
     if (domainname && !(server = strdup_unixcp( domainname ))) return ERROR_OUTOFMEMORY;
     if (!(user = strdup_unixcp( username )))
@@ -942,21 +950,20 @@ static NET_API_STATUS change_password_smb( LPCWSTR domainname, LPCWSTR username,
     }
     else argv[4] = NULL;
 
-    pipe_out = fork_smbpasswd( argv );
+    pipe_out = fork_smbpasswd( argv, &pid );
     HeapFree( GetProcessHeap(), 0, server );
     HeapFree( GetProcessHeap(), 0, user );
     if (pipe_out == -1) return NERR_InternalError;
 
     if (!(old = strdup_unixcp( oldpassword )))
     {
-        close( pipe_out );
-        return ERROR_OUTOFMEMORY;
+        ret = ERROR_OUTOFMEMORY;
+        goto end;
     }
     if (!(new = strdup_unixcp( newpassword )))
     {
-        close( pipe_out );
-        HeapFree( GetProcessHeap(), 0, old );
-        return ERROR_OUTOFMEMORY;
+        ret = ERROR_OUTOFMEMORY;
+        goto end;
     }
     write( pipe_out, old, strlen( old ) );
     write( pipe_out, "\n", 1 );
@@ -965,10 +972,26 @@ static NET_API_STATUS change_password_smb( LPCWSTR domainname, LPCWSTR username,
     write( pipe_out, new, strlen( new ) );
     write( pipe_out, "\n", 1 );
 
+end:
     close( pipe_out );
+
+#ifdef HAVE_FORK
+    {
+        pid_t wret;
+        int status;
+
+        do {
+            wret = waitpid(pid, &status, 0);
+        } while (wret < 0 && errno == EINTR);
+        if (ret == NERR_Success &&
+            (wret < 0 || !WIFEXITED(status) || WEXITSTATUS(status)))
+            ret = NERR_InternalError;
+    }
+#endif
+
     HeapFree( GetProcessHeap(), 0, old );
     HeapFree( GetProcessHeap(), 0, new );
-    return NERR_Success;
+    return ret;
 }
 
 /******************************************************************************