busybox/libbb/match_fstype.c
Denys Vlasenko 35b54a3c24 libbb: match_fstype() is unreadable in the extreme, fixing it
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-30 00:45:05 +01:00

42 lines
845 B
C

/* 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 1 for a match, otherwise 0
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include "libbb.h"
int FAST_FUNC fstype_matches(const char *fstype, const char *comma_list)
{
int match = 1;
if (!comma_list)
return match;
if (comma_list[0] == 'n' && comma_list[1] == 'o') {
match--;
comma_list += 2;
}
while (1) {
char *after_mnt_type = is_prefixed_with(comma_list, fstype);
if (after_mnt_type
&& (*after_mnt_type == '\0' || *after_mnt_type == ',')
) {
return match;
}
comma_list = strchr(comma_list, ',');
if (!comma_list)
break;
comma_list++;
}
return !match;
}