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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 libc_hidden_proto(memset)
21 libc_hidden_proto(strcmp)
22 libc_hidden_proto(strsep)
23 libc_hidden_proto(setmntent)
24 libc_hidden_proto(getmntent_r)
25 libc_hidden_proto(endmntent)
27 /* Now fill in the fields we have information for. */
28 buf->f_bsize = fsbuf.f_bsize;
29 /* Linux does not support f_frsize, so set it to the full block size. */
30 buf->f_frsize = fsbuf.f_bsize;
31 buf->f_blocks = fsbuf.f_blocks;
32 buf->f_bfree = fsbuf.f_bfree;
33 buf->f_bavail = fsbuf.f_bavail;
34 buf->f_files = fsbuf.f_files;
35 buf->f_ffree = fsbuf.f_ffree;
36 if (sizeof (buf->f_fsid) == sizeof (fsbuf.f_fsid))
37 buf->f_fsid = (fsbuf.f_fsid.__val[0]
38 | ((unsigned long int) fsbuf.f_fsid.__val[1]
39 << (8 * (sizeof (buf->f_fsid)
40 - sizeof (fsbuf.f_fsid.__val[0])))));
42 /* We cannot help here. The statvfs element is not large enough to
43 contain both words of the statfs f_fsid field. */
44 buf->f_fsid = fsbuf.f_fsid.__val[0];
45 #ifdef _STATVFSBUF_F_UNUSED
48 buf->f_namemax = fsbuf.f_namelen;
49 memset (buf->__f_spare, '\0', 6 * sizeof (int));
51 /* What remains to do is to fill the fields f_favail and f_flag. */
53 /* XXX I have no idea how to compute f_favail. Any idea??? */
54 buf->f_favail = buf->f_ffree;
56 /* Determining the flags is tricky. We have to read /proc/mounts or
57 the /etc/mtab file and search for the entry which matches the given
58 file. The way we can test for matching filesystem is using the
63 int save_errno = errno;
67 mtab = setmntent ("/proc/mounts", "r");
69 mtab = setmntent (_PATH_MOUNTED, "r");
75 while (getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf)))
79 /* Find out about the device the current entry is for. */
80 if (stat (mntbuf.mnt_dir, &fsst) >= 0
81 && st.st_dev == fsst.st_dev)
83 /* Bingo, we found the entry for the device FD is on.
84 Now interpret the option string. */
85 char *cp = mntbuf.mnt_opts;
88 while ((opt = strsep (&cp, ",")) != NULL)
89 if (strcmp (opt, "ro") == 0)
90 buf->f_flag |= ST_RDONLY;
91 else if (strcmp (opt, "nosuid") == 0)
92 buf->f_flag |= ST_NOSUID;
93 else if (strcmp (opt, "noexec") == 0)
94 buf->f_flag |= ST_NOEXEC;
95 else if (strcmp (opt, "nodev") == 0)
96 buf->f_flag |= ST_NODEV;
97 else if (strcmp (opt, "sync") == 0)
98 buf->f_flag |= ST_SYNCHRONOUS;
99 else if (strcmp (opt, "mand") == 0)
100 buf->f_flag |= ST_MANDLOCK;
101 else if (strcmp (opt, "noatime") == 0)
102 buf->f_flag |= ST_NOATIME;
103 else if (strcmp (opt, "nodiratime") == 0)
104 buf->f_flag |= ST_NODIRATIME;
106 /* We can stop looking for more entries. */
111 /* Close the file. */
115 __set_errno (save_errno);