1                 : /*
       2                 :  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
       3                 :  * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
       4                 :  *
       5                 :  * This file is part of the device-mapper userspace tools.
       6                 :  *
       7                 :  * This copyrighted material is made available to anyone wishing to use,
       8                 :  * modify, copy, or redistribute it subject to the terms and conditions
       9                 :  * of the GNU Lesser General Public License v.2.1.
      10                 :  *
      11                 :  * You should have received a copy of the GNU Lesser General Public License
      12                 :  * along with this program; if not, write to the Free Software Foundation,
      13                 :  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      14                 :  */
      15                 : 
      16                 : #include "dmlib.h"
      17                 : 
      18                 : #include <sys/file.h>
      19                 : #include <fcntl.h>
      20                 : #include <dirent.h>
      21                 : 
      22               0 : static int _create_dir_recursive(const char *dir)
      23                 : {
      24                 :         char *orig, *s;
      25               0 :         int rc, r = 0;
      26                 : 
      27               0 :         log_verbose("Creating directory \"%s\"", dir);
      28                 :         /* Create parent directories */
      29               0 :         orig = s = dm_strdup(dir);
      30               0 :         while ((s = strchr(s, '/')) != NULL) {
      31               0 :                 *s = '\0';
      32               0 :                 if (*orig) {
      33               0 :                         rc = mkdir(orig, 0777);
      34               0 :                         if (rc < 0 && errno != EEXIST) {
      35               0 :                                 if (errno != EROFS)
      36               0 :                                         log_sys_error("mkdir", orig);
      37               0 :                                 goto out;
      38                 :                         }
      39                 :                 }
      40               0 :                 *s++ = '/';
      41                 :         }
      42                 : 
      43                 :         /* Create final directory */
      44               0 :         rc = mkdir(dir, 0777);
      45               0 :         if (rc < 0 && errno != EEXIST) {
      46               0 :                 if (errno != EROFS)
      47               0 :                         log_sys_error("mkdir", orig);
      48               0 :                 goto out;
      49                 :         }
      50                 : 
      51               0 :         r = 1;
      52                 : out:
      53               0 :         dm_free(orig);
      54               0 :         return r;
      55                 : }
      56                 : 
      57               2 : int dm_create_dir(const char *dir)
      58                 : {
      59                 :         struct stat info;
      60                 : 
      61               2 :         if (!*dir)
      62               0 :                 return 1;
      63                 : 
      64               2 :         if (stat(dir, &info) < 0)
      65               0 :                 return _create_dir_recursive(dir);
      66                 : 
      67               2 :         if (S_ISDIR(info.st_mode))
      68               2 :                 return 1;
      69                 : 
      70               0 :         log_error("Directory \"%s\" not found", dir);
      71               0 :         return 0;
      72                 : }
      73                 : 
      74               0 : int dm_fclose(FILE *stream)
      75                 : {
      76               0 :         int prev_fail = ferror(stream);
      77               0 :         int fclose_fail = fclose(stream);
      78                 : 
      79                 :         /* If there was a previous failure, but fclose succeeded,
      80                 :            clear errno, since ferror does not set it, and its value
      81                 :            may be unrelated to the ferror-reported failure.  */
      82               0 :         if (prev_fail && !fclose_fail)
      83               0 :                 errno = 0;
      84                 : 
      85               0 :         return prev_fail || fclose_fail ? EOF : 0;
      86                 : }