aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/fstatvfs.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-03-20 16:35:19 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-20 16:35:19 +0000
commit867506f3b0f0c23128d601a8812de023078c88b4 (patch)
treecc04aaefd099a90961bebdac8ea60cbcbe218d47 /sysdeps/unix/sysv/linux/fstatvfs.c
parent8e31cf7e9f269668c6c86db9813839efc2fd434b (diff)
downloadglibc-867506f3b0f0c23128d601a8812de023078c88b4.tar
glibc-867506f3b0f0c23128d601a8812de023078c88b4.tar.gz
glibc-867506f3b0f0c23128d601a8812de023078c88b4.tar.bz2
glibc-867506f3b0f0c23128d601a8812de023078c88b4.zip
Update.
1998-03-20 16:24 Ulrich Drepper <drepper@cygnus.com> * libc.map: Add statvfs, fstatvfs, statvfs64, and fstatvfs64. * io/Makefile (headers): Add sys/statvfs.h and bits/statvfs.h. * io/sys/statvfs.h: New file. * sysdeps/generic/fstatvfs.h: New file. * sysdeps/generic/statvfs.h: New file. * sysdeps/generic/fstatvfs64.h: New file. * sysdeps/generic/statvfs64.h: New file. * sysdeps/generic/bits/statvfs.h: New file. * sysdeps/unix/sysv/linux/fstatvfs.c: New file. * sysdeps/unix/sysv/linux/statvfs.c: New file. * sysdeps/unix/sysv/linux/bits/statvfs.h: New file. * sysdeps/unix/sysv/linux/bits/statfs.h: Correct type for f_files and f_ffree elements. * sysdeps/unix/sysv/linux/sys/mount.h: Pretty print. Define mount options in enum.
Diffstat (limited to 'sysdeps/unix/sysv/linux/fstatvfs.c')
-rw-r--r--sysdeps/unix/sysv/linux/fstatvfs.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/fstatvfs.c b/sysdeps/unix/sysv/linux/fstatvfs.c
new file mode 100644
index 0000000000..53edb6be3a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/fstatvfs.c
@@ -0,0 +1,173 @@
+/* Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <mntent.h>
+#include <paths.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/statvfs.h>
+
+/* These definitions come from the kernel headers. But we cannot
+ include the headers here because of type clashes. If there will
+ become new filesystem types available we have to add the
+ appropriate definitions here.*/
+#define ADFS_SUPER_MAGIC 0xadf5
+#define AFFS_SUPER_MAGIC 0xadff
+#define CODA_SUPER_MAGIC 0x73757245
+#define EXT2_SUPER_MAGIC 0xef53
+#define HPFS_SUPER_MAGIC 0xf995e849
+#define ISOFS_SUPER_MAGIC 0x9660
+#define MINIX_SUPER_MAGIC 0x137f
+#define MINIX_SUPER_MAGIC2 0x138F
+#define MINIX2_SUPER_MAGIC 0x2468
+#define MINIX2_SUPER_MAGIC2 0x2478
+#define MSDOS_SUPER_MAGIC 0x4d44
+#define NCP_SUPER_MAGIC 0x564c
+#define NFS_SUPER_MAGIC 0x6969
+#define PROC_SUPER_MAGIC 0x9fa0
+#define SMB_SUPER_MAGIC 0x517b
+#define XENIX_SUPER_MAGIC 0x012ff7b4
+#define SYSV4_SUPER_MAGIC 0x012ff7b5
+#define SYSV2_SUPER_MAGIC 0x012ff7b6
+#define COH_SUPER_MAGIC 0x012ff7b7
+
+
+int
+fstatvfs (int fd, struct statvfs *buf)
+{
+ struct statfs fsbuf;
+ struct stat st;
+
+ /* Get as much information as possible from the system. */
+ if (__fstatfs (fd, &fsbuf) < 0)
+ return -1;
+
+ /* Now fill in the fields me have information for. */
+ buf->f_bsize = 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;
+ buf->f_fsid = fsbuf.f_fsid;
+ buf->f_namemax = fsbuf.f_namelen;
+ memset (buf->f_spare, '\0', 6 * sizeof (int));
+
+ /* What remains to do is to fill the fields f_frsize, f_favail,
+ and f_flag. */
+ switch (fsbuf.f_type)
+ {
+ case EXT2_SUPER_MAGIC:
+ /* This is not really correct since the fragment size can vary. */
+ buf->f_frsize = 1024;
+ break;
+
+ case ADFS_SUPER_MAGIC:
+ case AFFS_SUPER_MAGIC:
+ case CODA_SUPER_MAGIC:
+ case HPFS_SUPER_MAGIC:
+ case ISOFS_SUPER_MAGIC:
+ case MINIX_SUPER_MAGIC:
+ case MINIX_SUPER_MAGIC2:
+ case MINIX2_SUPER_MAGIC:
+ case MINIX2_SUPER_MAGIC2:
+ case MSDOS_SUPER_MAGIC:
+ case NCP_SUPER_MAGIC:
+ case NFS_SUPER_MAGIC:
+ case PROC_SUPER_MAGIC:
+ case SMB_SUPER_MAGIC:
+ case XENIX_SUPER_MAGIC:
+ case SYSV4_SUPER_MAGIC:
+ case SYSV2_SUPER_MAGIC:
+ case COH_SUPER_MAGIC:
+ default:
+ /* I hope it's safe to assume no fragmentation. */
+ buf->f_frsize = buf->f_bsize;
+ break;
+ }
+
+ /* 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/mount or
+ the /etc/matb 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 (fstat (fd, &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 stat fsst;
+
+ /* Find out about the device the current entry is for. */
+ if (stat (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;
+
+ /* We can stop looking for more entries. */
+ break;
+ }
+ }
+
+ /* Close the file. */
+ __endmntent (mtab);
+ }
+
+ __set_errno (save_errno);
+ }
+
+ /* We signal success if the statfs call succeeded. */
+ return 0;
+}