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authorGravatar Rob Landley <rob@landley.net>2006-03-17 03:30:05 +0000
committerGravatar Rob Landley <rob@landley.net>2006-03-17 03:30:05 +0000
commit5a5782156582bc57cb5462d74abe11f4cf415eb9 (patch)
tree42677357a045e89b4affda879756e51f8808747e /util-linux
parent2824ded677802d8afd99d5d17543665491803486 (diff)
downloadbusybox-5a5782156582bc57cb5462d74abe11f4cf415eb9.tar.gz
busybox-5a5782156582bc57cb5462d74abe11f4cf415eb9.tar.bz2
Bug fix: umount wasn't detaching loop devices unless mtab support was enabled.
Made some whitespace cleanups while I was there.
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/umount.c73
1 files changed, 38 insertions, 35 deletions
diff --git a/util-linux/umount.c b/util-linux/umount.c
index 71ddbd4ed..7efb636db 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -21,7 +21,7 @@
#include <getopt.h>
#include "busybox.h"
-#define OPTION_STRING "flDnrva"
+#define OPTION_STRING "flDnrvad"
#define OPT_FORCE 1
#define OPT_LAZY 2
#define OPT_DONTFREELOOP 4
@@ -36,7 +36,7 @@ int umount_main(int argc, char **argv)
char path[2*PATH_MAX];
struct mntent me;
FILE *fp;
- int status=EXIT_SUCCESS;
+ int status = EXIT_SUCCESS;
unsigned long opt;
struct mtab_list {
char *dir;
@@ -46,7 +46,7 @@ int umount_main(int argc, char **argv)
/* Parse any options */
- opt = bb_getopt_ulflags (argc, argv, OPTION_STRING);
+ opt = bb_getopt_ulflags(argc, argv, OPTION_STRING);
argc -= optind;
argv += optind;
@@ -59,52 +59,55 @@ int umount_main(int argc, char **argv)
* entry. Notice that this also naturally reverses the list so that -a
* umounts the most recent entries first. */
- m=mtl=0;
- if(opt & OPT_ALL) {
+ m = mtl = 0;
- /* If we're umounting all, then m points to the start of the list and
- * the argument list should be empty (which will match all). */
+ /* If we're umounting all, then m points to the start of the list and
+ * the argument list should be empty (which will match all). */
- if(!(fp = setmntent(bb_path_mtab_file, "r")))
+ if (!(fp = setmntent(bb_path_mtab_file, "r"))) {
+ if (opt & OPT_ALL)
bb_error_msg_and_die("Cannot open %s", bb_path_mtab_file);
- while (getmntent_r(fp,&me,path,sizeof(path))) {
- m=xmalloc(sizeof(struct mtab_list));
- m->next=mtl;
- m->device=bb_xstrdup(me.mnt_fsname);
- m->dir=bb_xstrdup(me.mnt_dir);
- mtl=m;
- }
- endmntent(fp);
+ } else while (getmntent_r(fp,&me,path,sizeof(path))) {
+ m = xmalloc(sizeof(struct mtab_list));
+ m->next = mtl;
+ m->device = bb_xstrdup(me.mnt_fsname);
+ m->dir = bb_xstrdup(me.mnt_dir);
+ mtl = m;
+ }
+ endmntent(fp);
/* If we're not mounting all, we need at least one argument. */
- } else if(argc <= 0) bb_show_usage();
+ if (!(opt & OPT_ALL)) {
+ m = 0;
+ if (!argc) bb_show_usage();
+ }
+
+
// Loop through everything we're supposed to umount, and do so.
- for(;;) {
+ for (;;) {
int curstat;
// Do we already know what to umount this time through the loop?
- if(m) safe_strncpy(path,m->dir,PATH_MAX);
+ if (m) safe_strncpy(path, m->dir, PATH_MAX);
// For umount -a, end of mtab means time to exit.
- else if(opt & OPT_ALL) break;
+ else if (opt & OPT_ALL) break;
// Get next command line argument (and look it up in mtab list)
- else if(!argc--) break;
+ else if (!argc--) break;
else {
- // Get next command line argument (and look it up in mtab list)
realpath(*argv++, path);
- if (ENABLE_FEATURE_MTAB_SUPPORT)
- for(m = mtl; m; m = m->next)
- if(!strcmp(path, m->dir) || !strcmp(path, m->device))
- break;
+ for (m = mtl; m; m = m->next)
+ if (!strcmp(path, m->dir) || !strcmp(path, m->device))
+ break;
}
// Let's ask the thing nicely to unmount.
curstat = umount(path);
// Force the unmount, if necessary.
- if(curstat && doForce) {
+ if (curstat && doForce) {
curstat = umount2(path, doForce);
- if(curstat)
+ if (curstat)
bb_error_msg_and_die("forced umount of %s failed!", path);
}
@@ -117,10 +120,10 @@ int umount_main(int argc, char **argv)
/* De-allocate the loop device. This ioctl should be ignored on any
* non-loop block devices. */
- if(ENABLE_FEATURE_MOUNT_LOOP && !(opt & OPT_DONTFREELOOP) && m)
+ if (ENABLE_FEATURE_MOUNT_LOOP && !(opt & OPT_DONTFREELOOP) && m)
del_loop(m->device);
- if(curstat) {
+ if (curstat) {
/* Yes, the ENABLE is redundant here, but the optimizer for ARM
* can't do simple constant propagation in local variables... */
if(ENABLE_FEATURE_MTAB_SUPPORT && !(opt & OPT_NO_MTAB) && m)
@@ -129,16 +132,16 @@ int umount_main(int argc, char **argv)
bb_perror_msg("Couldn't umount %s", path);
}
// Find next matching mtab entry for -a or umount /dev
- while(m && (m = m->next))
- if((opt & OPT_ALL) || !strcmp(path,m->device))
+ while (m && (m = m->next))
+ if ((opt & OPT_ALL) || !strcmp(path,m->device))
break;
}
// Free mtab list if necessary
- if(ENABLE_FEATURE_CLEAN_UP) {
- while(mtl) {
- m=mtl->next;
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ while (mtl) {
+ m = mtl->next;
free(mtl->device);
free(mtl->dir);
free(mtl);