1 /* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 /* Now fill in the fields we have information for. */
20 buf->f_bsize = fsbuf.f_bsize;
21 /* Linux does not support f_frsize, so set it to the full block size. */
22 buf->f_frsize = fsbuf.f_bsize;
23 buf->f_blocks = fsbuf.f_blocks;
24 buf->f_bfree = fsbuf.f_bfree;
25 buf->f_bavail = fsbuf.f_bavail;
26 buf->f_files = fsbuf.f_files;
27 buf->f_ffree = fsbuf.f_ffree;
28 if (sizeof (buf->f_fsid) == sizeof (fsbuf.f_fsid))
29 buf->f_fsid = (fsbuf.f_fsid.__val[0]
30 | ((unsigned long int) fsbuf.f_fsid.__val[1]
31 << (8 * (sizeof (buf->f_fsid)
32 - sizeof (fsbuf.f_fsid.__val[0])))));
34 /* We cannot help here. The statvfs element is not large enough to
35 contain both words of the statfs f_fsid field. */
36 buf->f_fsid = fsbuf.f_fsid.__val[0];
37 #ifdef _STATVFSBUF_F_UNUSED
40 buf->f_namemax = fsbuf.f_namelen;
41 memset (buf->__f_spare, '\0', 6 * sizeof (int));
43 /* What remains to do is to fill the fields f_favail and f_flag. */
45 /* XXX I have no idea how to compute f_favail. Any idea??? */
46 buf->f_favail = buf->f_ffree;
48 /* Determining the flags is tricky. We have to read /proc/mounts or
49 the /etc/mtab file and search for the entry which matches the given
50 file. The way we can test for matching filesystem is using the
55 int save_errno = errno;
59 mtab = setmntent ("/proc/mounts", "r");
61 mtab = setmntent (_PATH_MOUNTED, "r");
67 while (getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf)))
71 /* Find out about the device the current entry is for. */
72 if (stat (mntbuf.mnt_dir, &fsst) >= 0
73 && st.st_dev == fsst.st_dev)
75 /* Bingo, we found the entry for the device FD is on.
76 Now interpret the option string. */
77 char *cp = mntbuf.mnt_opts;
80 while ((opt = strsep (&cp, ",")) != NULL)
81 if (strcmp (opt, "ro") == 0)
82 buf->f_flag |= ST_RDONLY;
83 else if (strcmp (opt, "nosuid") == 0)
84 buf->f_flag |= ST_NOSUID;
86 else if (strcmp (opt, "noexec") == 0)
87 buf->f_flag |= ST_NOEXEC;
88 else if (strcmp (opt, "nodev") == 0)
89 buf->f_flag |= ST_NODEV;
90 else if (strcmp (opt, "sync") == 0)
91 buf->f_flag |= ST_SYNCHRONOUS;
92 else if (strcmp (opt, "mand") == 0)
93 buf->f_flag |= ST_MANDLOCK;
94 else if (strcmp (opt, "noatime") == 0)
95 buf->f_flag |= ST_NOATIME;
96 else if (strcmp (opt, "nodiratime") == 0)
97 buf->f_flag |= ST_NODIRATIME;
100 /* We can stop looking for more entries. */
105 /* Close the file. */
109 __set_errno (save_errno);