| /* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* Now fill in the fields we have information for. */ |
| buf->f_bsize = fsbuf.f_bsize; |
| /* Linux does not support f_frsize, so set it to the full block size. */ |
| buf->f_frsize = fsbuf.f_bsize; |
| buf->f_blocks = fsbuf.f_blocks; |
| buf->f_bfree = fsbuf.f_bfree; |
| buf->f_bavail = fsbuf.f_bavail; |
| buf->f_files = fsbuf.f_files; |
| buf->f_ffree = fsbuf.f_ffree; |
| if (sizeof (buf->f_fsid) == sizeof (fsbuf.f_fsid)) |
| buf->f_fsid = (fsbuf.f_fsid.__val[0] |
| | ((unsigned long int) fsbuf.f_fsid.__val[1] |
| << (8 * (sizeof (buf->f_fsid) |
| - sizeof (fsbuf.f_fsid.__val[0]))))); |
| else |
| /* We cannot help here. The statvfs element is not large enough to |
| contain both words of the statfs f_fsid field. */ |
| buf->f_fsid = fsbuf.f_fsid.__val[0]; |
| #ifdef _STATVFSBUF_F_UNUSED |
| buf->__f_unused = 0; |
| #endif |
| buf->f_namemax = fsbuf.f_namelen; |
| memset (buf->__f_spare, '\0', 6 * sizeof (int)); |
| |
| /* What remains to do is to fill the fields f_favail and f_flag. */ |
| |
| /* XXX I have no idea how to compute f_favail. Any idea??? */ |
| buf->f_favail = buf->f_ffree; |
| |
| /* Determining the flags is tricky. We have to read /proc/mounts or |
| the /etc/mtab file and search for the entry which matches the given |
| file. The way we can test for matching filesystem is using the |
| device number. */ |
| buf->f_flag = 0; |
| if (STAT (&st) >= 0) |
| { |
| int save_errno = errno; |
| struct mntent mntbuf; |
| FILE *mtab; |
| |
| mtab = __setmntent ("/proc/mounts", "r"); |
| if (mtab == NULL) |
| mtab = __setmntent (_PATH_MOUNTED, "r"); |
| |
| if (mtab != NULL) |
| { |
| char tmpbuf[1024]; |
| |
| while (__getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf))) |
| { |
| struct stat64 fsst; |
| |
| /* Find out about the device the current entry is for. */ |
| if (stat64 (mntbuf.mnt_dir, &fsst) >= 0 |
| && st.st_dev == fsst.st_dev) |
| { |
| /* Bingo, we found the entry for the device FD is on. |
| Now interpret the option string. */ |
| char *cp = mntbuf.mnt_opts; |
| char *opt; |
| |
| while ((opt = strsep (&cp, ",")) != NULL) |
| if (strcmp (opt, "ro") == 0) |
| buf->f_flag |= ST_RDONLY; |
| else if (strcmp (opt, "nosuid") == 0) |
| buf->f_flag |= ST_NOSUID; |
| else if (strcmp (opt, "noexec") == 0) |
| buf->f_flag |= ST_NOEXEC; |
| else if (strcmp (opt, "nodev") == 0) |
| buf->f_flag |= ST_NODEV; |
| else if (strcmp (opt, "sync") == 0) |
| buf->f_flag |= ST_SYNCHRONOUS; |
| else if (strcmp (opt, "mand") == 0) |
| buf->f_flag |= ST_MANDLOCK; |
| else if (strcmp (opt, "noatime") == 0) |
| buf->f_flag |= ST_NOATIME; |
| else if (strcmp (opt, "nodiratime") == 0) |
| buf->f_flag |= ST_NODIRATIME; |
| |
| /* We can stop looking for more entries. */ |
| break; |
| } |
| } |
| |
| /* Close the file. */ |
| __endmntent (mtab); |
| } |
| |
| errno = (save_errno); |
| } |