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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
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. */
#include <stdio.h>
#include <sys/vfstab.h>
#include <string.h>
#define _VFS_DELIM " \t"
#define _VFS_CMP(x, y, f) (!y->f || (y->f && strcmp (x->f, y->f) == 0))
static __thread char vfs_buf[VFS_LINE_MAX + 2];
static int vfs_strtok_r (char *str, const char *delim,
char **saveptr, char **strt)
{
int ret = (*strt = strtok_r (str, delim, saveptr)) ? 1 : 0;
if (*strt && strcmp (*strt, "-") == 0)
*strt = NULL;
return ret;
}
int getvfsent (FILE *fp, struct vfstab *vp)
{
while (fgets (vfs_buf, VFS_LINE_MAX + 2, fp) != NULL)
{
/* Check for long lines. */
size_t len = strlen (vfs_buf);
if (len > VFS_LINE_MAX)
return VFS_TOOLONG;
/* Trim leading spaces/tabs. */
char *bufp = vfs_buf;
while (*bufp == ' ' || *bufp == '\t')
bufp++;
len = strlen (bufp);
/* Ignore empty lines and lines starting with #. */
if (len && (bufp[0] == '\n' || bufp[0] == '#'))
continue;
bufp[len - 1] = '\0';
/* Tokenize. */
char *tokp = NULL;
if (!vfs_strtok_r (bufp, _VFS_DELIM, &tokp, &vp->vfs_special) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_fsckdev) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_mountp) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_fstype) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_fsckpass) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_automnt) ||
!vfs_strtok_r (NULL, _VFS_DELIM, &tokp, &vp->vfs_mntopts))
return VFS_TOOFEW;
/* If we can still tokenize the line is too long. */
if (strtok_r (NULL, _VFS_DELIM, &tokp))
return VFS_TOOMANY;
return 0;
}
return -1;
}
int getvfsany (FILE *fp, struct vfstab *vp, struct vfstab *vpref)
{
int res;
while ((res = getvfsent (fp, vp)) == 0)
{
if (_VFS_CMP (vp, vpref, vfs_special) &&
_VFS_CMP (vp, vpref, vfs_fsckdev) &&
_VFS_CMP (vp, vpref, vfs_mountp) &&
_VFS_CMP (vp, vpref, vfs_fstype) &&
_VFS_CMP (vp, vpref, vfs_fsckpass) &&
_VFS_CMP (vp, vpref, vfs_automnt) &&
_VFS_CMP (vp, vpref, vfs_mntopts))
return 0;
}
return res;
}
int getvfsfile (FILE *fp, struct vfstab *vp, char *file)
{
struct vfstab vref = {
.vfs_mountp = file
};
return getvfsany (fp, vp, &vref);
}
int getvfsspec (FILE *fp, struct vfstab *vp, char *spec)
{
struct vfstab vref = {
.vfs_special = spec
};
return getvfsany (fp, vp, &vref);
}
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