hush/libbb/match_fstype.c

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2007-04-05 22:19:43 +00:00
/* vi: set sw=4 ts=4: */
/*
* Match fstypes for use in mount unmount
* We accept notmpfs,nfs but not notmpfs,nonfs
* This allows us to match fstypes that start with no like so
* mount -at ,noddy
*
* Returns 0 for a match, otherwise -1
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
int FAST_FUNC match_fstype(const struct mntent *mt, const char *fstype)
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{
int no = 0;
int len;
if (!mt)
return -1;
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if (!fstype)
return 0;
if (fstype[0] == 'n' && fstype[1] == 'o') {
no = -1;
fstype += 2;
}
len = strlen(mt->mnt_type);
while (fstype) {
if (!strncmp(mt->mnt_type, fstype, len)
&& (!fstype[len] || fstype[len] == ',')
) {
return no;
}
fstype = strchr(fstype, ',');
if (fstype)
fstype++;
}
return -(no + 1);
}