src/basic/quota-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <sys/quota.h>
   4
   5 #include "alloc-util.h"
   6 #include "blockdev-util.h"
   7 #include "quota-util.h"
   8 #include "stat-util.h"
   9
  10 int quotactl_devno(int cmd, dev_t devno, int id, void *addr) {
  11         _cleanup_free_ char *devnode = NULL;
  12         int r;
  13
  14         /* Like quotactl() but takes a dev_t instead of a path to a device node, and fixes caddr_t → void*,
  15          * like we should, today */
  16
  17         r = device_path_make_major_minor(S_IFBLK, devno, &devnode);
  18         if (r < 0)
  19                 return r;
  20
  21         if (quotactl(cmd, devnode, id, addr) < 0)
  22                 return -errno;
  23
  24         return 0;
  25 }
  26
  27 int quotactl_path(int cmd, const char *path, int id, void *addr) {
  28         dev_t devno;
  29         int r;
  30
  31         /* Like quotactl() but takes a path to some fs object, and changes the backing file system. I.e. the
  32          * argument shouldn't be a block device but a regular file system object */
  33
  34         r = get_block_device(path, &devno);
  35         if (r < 0)
  36                 return r;
  37         if (devno == 0) /* Doesn't have a block device */
  38                 return -ENODEV;
  39
  40         return quotactl_devno(cmd, devno, id, addr);
  41 }