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.

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;
+}