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libbb: match_fstype() is unreadable in the extreme, fixing it

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-01-30 00:45:05 +01:00
parent eba7fe6bb9
commit 35b54a3c24
4 changed files with 12 additions and 16 deletions
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2
include/libbb.h
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@ -1312,8 +1312,8 @@ const struct hwtype *get_hwtype(const char *name) FAST_FUNC;
const struct hwtype *get_hwntype(int type) FAST_FUNC;
extern int fstype_matches(const char *fstype, const char *comma_list) FAST_FUNC;
#ifdef HAVE_MNTENT_H
extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC;
extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC;
#endif
extern void erase_mtab(const char * name) FAST_FUNC;

20
libbb/match_fstype.c
View File

@ -12,34 +12,30 @@
#include "libbb.h"
#ifdef HAVE_MNTENT_H
int FAST_FUNC match_fstype(const struct mntent *mt, const char *t_fstype)
int FAST_FUNC fstype_matches(const char *fstype, const char *comma_list)
{
int match = 1;
if (!t_fstype)
if (!comma_list)
return match;
if (t_fstype[0] == 'n' && t_fstype[1] == 'o') {
if (comma_list[0] == 'n' && comma_list[1] == 'o') {
match--;
t_fstype += 2;
comma_list += 2;
}
while (1) {
char *after_mnt_type = is_prefixed_with(t_fstype, mt->mnt_type);
char *after_mnt_type = is_prefixed_with(comma_list, fstype);
if (after_mnt_type
&& (*after_mnt_type == '\0' || *after_mnt_type == ',')
) {
return match;
}
t_fstype = strchr(t_fstype, ',');
if (!t_fstype)
comma_list = strchr(comma_list, ',');
if (!comma_list)
break;
t_fstype++;
comma_list++;
}
return !match;
}
#endif /* HAVE_MNTENT_H */

2
util-linux/mount.c
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@ -2312,7 +2312,7 @@ int mount_main(int argc UNUSED_PARAM, char **argv)
bb_error_msg_and_die(bb_msg_you_must_be_root);
// Does type match? (NULL matches always)
if (!match_fstype(mtcur, fstype))
if (!fstype_matches(mtcur->mnt_type, fstype))
continue;
// Skip noauto and swap anyway

4
util-linux/umount.c
View File

@ -125,8 +125,8 @@ int umount_main(int argc UNUSED_PARAM, char **argv)
} else {
setup_common_bufsiz();
while (getmntent_r(fp, &me, bb_common_bufsiz1, COMMON_BUFSIZE)) {
/* Match fstype if passed */
if (!match_fstype(&me, fstype))
/* Match fstype (fstype==NULL matches always) */
if (!fstype_matches(me.mnt_type, fstype))
continue;
m = xzalloc(sizeof(*m));
m->next = mtl;