1 files changed, 150 insertions, 141 deletions

diff --git a/util-linux/umount.c b/util-linux/umount.c
index b65caf7..a2ca8c7 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini umount implementation for busybox
  *
@@ -28,24 +29,23 @@
 #include <fstab.h>
 #include <errno.h>
 
-static const char umount_usage[] = 
-"umount [flags] filesystem|directory\n\n"
-"Flags:\n"
-"\t-a:\tUnmount all file systems"
+static const char umount_usage[] =
+	"umount [flags] filesystem|directory\n\n"
+	"Flags:\n" "\t-a:\tUnmount all file systems"
 #ifdef BB_MTAB
-" in /etc/mtab\n\t-n:\tDon't erase /etc/mtab entries\n"
+	" in /etc/mtab\n\t-n:\tDon't erase /etc/mtab entries\n"
 #else
-"\n"
+	"\n"
 #endif
 #ifdef BB_FEATURE_REMOUNT
-"\t-r:\tTry to remount devices as read-only if mount is busy\n"
+	"\t-r:\tTry to remount devices as read-only if mount is busy\n"
 #endif
 ;
 
 struct _mtab_entry_t {
-  char *device;
-  char *mountpt;
-  struct _mtab_entry_t *next;
+	char *device;
+	char *mountpt;
+	struct _mtab_entry_t *next;
 };
 
 static struct _mtab_entry_t *mtab_cache = NULL;
@@ -55,113 +55,112 @@ static struct _mtab_entry_t *mtab_cache = NULL;
 static int useMtab = TRUE;
 static int umountAll = FALSE;
 static int doRemount = FALSE;
-extern const char mtab_file[]; /* Defined in utility.c */
+extern const char mtab_file[];	/* Defined in utility.c */
 
 #define MIN(x,y) (x > y ? x : y)
 
-static int 
-do_umount(const char* name, int useMtab)
+static int do_umount(const char *name, int useMtab)
 {
-    int status;
-    char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
+	int status;
+	char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
 
-    if (blockDevice && strcmp(blockDevice, name) == 0)
-        name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
+	if (blockDevice && strcmp(blockDevice, name) == 0)
+		name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
 
-    status = umount(name);
+	status = umount(name);
 
 #if defined BB_FEATURE_MOUNT_LOOP
-    if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
-	/* this was a loop device, delete it */
-	del_loop(blockDevice);
+	if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
+		/* this was a loop device, delete it */
+		del_loop(blockDevice);
 #endif
 #if defined BB_FEATURE_REMOUNT
-    if ( status != 0 && doRemount == TRUE && errno == EBUSY ) {
-        status = mount(blockDevice, name, NULL, 
-                       MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
-	if (status == 0) {
-	    fprintf(stderr, "umount: %s busy - remounted read-only\n", 
-                    blockDevice);
-	    /* TODO: update mtab if BB_MTAB is defined */
-	} else {
-	    fprintf(stderr, "umount: Cannot remount %s read-only\n",
-                    blockDevice);
+	if (status != 0 && doRemount == TRUE && errno == EBUSY) {
+		status = mount(blockDevice, name, NULL,
+					   MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
+		if (status == 0) {
+			fprintf(stderr, "umount: %s busy - remounted read-only\n",
+					blockDevice);
+			/* TODO: update mtab if BB_MTAB is defined */
+		} else {
+			fprintf(stderr, "umount: Cannot remount %s read-only\n",
+					blockDevice);
+		}
 	}
-    }
 #endif
-    if ( status == 0 ) {
+	if (status == 0) {
 #if defined BB_MTAB
-	if ( useMtab==TRUE )
-	    erase_mtab(name);
+		if (useMtab == TRUE)
+			erase_mtab(name);
 #endif
-	return( TRUE);
-    }
-    return(FALSE);
+		return (TRUE);
+	}
+	return (FALSE);
 }
 
-static int
-umount_all(int useMtab)
+static int umount_all(int useMtab)
 {
 	int status = TRUE;
 	char *mountpt;
 	void *iter;
 
 	for (mountpt = mtab_first(&iter); mountpt; mountpt = mtab_next(&iter)) {
-            status=do_umount (mountpt, useMtab);
-            if (status != 0) {
-                /* Don't bother retrying the umount on busy devices */
-		if (errno == EBUSY) {
-                   perror(mountpt);
-		   continue;
-		}
-		status = do_umount (mountpt, useMtab);
+		status = do_umount(mountpt, useMtab);
 		if (status != 0) {
-                    printf ("Couldn't umount %s on %s: %s\n", 
-                        mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE), strerror(errno));
+			/* Don't bother retrying the umount on busy devices */
+			if (errno == EBUSY) {
+				perror(mountpt);
+				continue;
+			}
+			status = do_umount(mountpt, useMtab);
+			if (status != 0) {
+				printf("Couldn't umount %s on %s: %s\n",
+					   mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE),
+					   strerror(errno));
+			}
 		}
-            }
-        }
-        return (status);
+	}
+	return (status);
 }
 
-extern int
-umount_main(int argc, char** argv)
+extern int umount_main(int argc, char **argv)
 {
-    if (argc < 2) {
-	usage( umount_usage); 
-    }
-
-    /* Parse any options */
-    while (--argc > 0 && **(++argv) == '-') {
-	while (*++(*argv)) switch (**argv) {
-	    case 'a':
-		umountAll = TRUE;
-		break;
+	if (argc < 2) {
+		usage(umount_usage);
+	}
+
+	/* Parse any options */
+	while (--argc > 0 && **(++argv) == '-') {
+		while (*++(*argv))
+			switch (**argv) {
+			case 'a':
+				umountAll = TRUE;
+				break;
 #ifdef BB_MTAB
-	    case 'n':
-		useMtab = FALSE;
-		break;
+			case 'n':
+				useMtab = FALSE;
+				break;
 #endif
 #ifdef BB_FEATURE_REMOUNT
-	    case 'r':
-		doRemount = TRUE;
-		break;
+			case 'r':
+				doRemount = TRUE;
+				break;
 #endif
-	    default:
-		usage( umount_usage);
+			default:
+				usage(umount_usage);
+			}
+	}
+
+	mtab_read();
+	if (umountAll == TRUE) {
+		exit(umount_all(useMtab));
+	}
+	if (do_umount(*argv, useMtab) == 0)
+		exit(TRUE);
+	else {
+		perror("umount");
+		exit(FALSE);
 	}
-    }
-
-    mtab_read();
-    if (umountAll==TRUE) {
-	exit(umount_all(useMtab));
-    }
-    if ( do_umount(*argv,useMtab) == 0 )
-	exit (TRUE);
-    else {
-	perror("umount");
-	exit(FALSE);
-    }
 }
 
 
@@ -172,79 +171,89 @@ umount_main(int argc, char** argv)
  */
 void mtab_read(void)
 {
-    struct _mtab_entry_t *entry = NULL;
-    struct mntent *e;
-    FILE *fp;
-  
-    if (mtab_cache != NULL) return;
- 
-    if ((fp = setmntent(mtab_file, "r")) == NULL) {
-        fprintf(stderr, "Cannot open %s\n", mtab_file);
-	return;
-    }
-    while ((e = getmntent(fp))) {
-        entry = malloc(sizeof(struct _mtab_entry_t));
-	entry->device = strdup(e->mnt_fsname);
-	entry->mountpt = strdup(e->mnt_dir);
-	entry->next = mtab_cache;
-	mtab_cache = entry;
-    }
-    endmntent(fp);
+	struct _mtab_entry_t *entry = NULL;
+	struct mntent *e;
+	FILE *fp;
+
+	if (mtab_cache != NULL)
+		return;
+
+	if ((fp = setmntent(mtab_file, "r")) == NULL) {
+		fprintf(stderr, "Cannot open %s\n", mtab_file);
+		return;
+	}
+	while ((e = getmntent(fp))) {
+		entry = malloc(sizeof(struct _mtab_entry_t));
+
+		entry->device = strdup(e->mnt_fsname);
+		entry->mountpt = strdup(e->mnt_dir);
+		entry->next = mtab_cache;
+		mtab_cache = entry;
+	}
+	endmntent(fp);
 }
 
 char *mtab_getinfo(const char *match, const char which)
 {
-    struct _mtab_entry_t *cur = mtab_cache;
-    while (cur) {
-        if (strcmp(cur->mountpt, match) == 0 ||
-	    strcmp(cur->device, match) == 0) {
-	    if (which == MTAB_GETMOUNTPT) {
-	        return cur->mountpt;
-	    } else {
+	struct _mtab_entry_t *cur = mtab_cache;
+
+	while (cur) {
+		if (strcmp(cur->mountpt, match) == 0 ||
+			strcmp(cur->device, match) == 0) {
+			if (which == MTAB_GETMOUNTPT) {
+				return cur->mountpt;
+			} else {
 #if !defined BB_MTAB
-                if (strcmp(cur->device, "/dev/root") == 0) {
-                    struct fstab* fstabItem;
-	            fstabItem = getfsfile ("/");
-	            if (fstabItem != NULL) return fstabItem->fs_spec;
-	        }
+				if (strcmp(cur->device, "/dev/root") == 0) {
+					struct fstab *fstabItem;
+
+					fstabItem = getfsfile("/");
+					if (fstabItem != NULL)
+						return fstabItem->fs_spec;
+				}
 #endif
-	        return cur->device;  
-	    }
+				return cur->device;
+			}
+		}
+		cur = cur->next;
 	}
-        cur = cur->next;
-    }
-    return NULL;
+	return NULL;
 }
 
 char *mtab_first(void **iter)
 {
-    struct _mtab_entry_t *mtab_iter;
-    if (!iter) return NULL;
-    mtab_iter = mtab_cache;
-    *iter = (void *)mtab_iter;
-    return mtab_next(iter);
+	struct _mtab_entry_t *mtab_iter;
+
+	if (!iter)
+		return NULL;
+	mtab_iter = mtab_cache;
+	*iter = (void *) mtab_iter;
+	return mtab_next(iter);
 }
 
 char *mtab_next(void **iter)
 {
-    char *mp;
-    if (iter == NULL || *iter == NULL) return NULL;
-    mp = ((struct _mtab_entry_t *)(*iter))->mountpt;
-    *iter = (void *)((struct _mtab_entry_t *)(*iter))->next;
-    return mp;
+	char *mp;
+
+	if (iter == NULL || *iter == NULL)
+		return NULL;
+	mp = ((struct _mtab_entry_t *) (*iter))->mountpt;
+	*iter = (void *) ((struct _mtab_entry_t *) (*iter))->next;
+	return mp;
 }
 
 void mtab_free(void)
 {
-    struct _mtab_entry_t *this, *next;
-
-    this = mtab_cache;
-    while (this) {
-      next = this->next;
-      if (this->device) free(this->device);
-      if (this->mountpt) free(this->mountpt);
-      free(this);
-      this = next;
-    }
-}
+	struct _mtab_entry_t *this, *next;
 
+	this = mtab_cache;
+	while (this) {
+		next = this->next;
+		if (this->device)
+			free(this->device);
+		if (this->mountpt)
+			free(this->mountpt);
+		free(this);
+		this = next;
+	}
+}