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A few minor updates. ;-)

Browse Source 
Seriously though, read the Changelog for busybox 0.42,
which this is about to become...
 -Erik
This commit is contained in:
Erik Andersen
2000-02-07 05:29:42 +00:00
parent 50bc101b7d
commit fac10d7c59
76 changed files with 1849 additions and 1023 deletions
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193
util-linux/umount.c
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@@ -37,11 +37,24 @@ static const char umount_usage[] =
#else
"\n"
#endif
#ifdef BB_FEATURE_REMOUNT
"\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;
};
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 */
#define MIN(x,y) (x > y ? x : y)
@@ -50,21 +63,10 @@ static int
do_umount(const char* name, int useMtab)
{
int status;
struct mntent *m;
FILE *mountTable;
const char *blockDevice = NULL;
char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
if ((mountTable = setmntent (mtab_file, "r"))) {
while ((m = getmntent (mountTable)) != 0) {
if (strncmp(m->mnt_dir, name,
MIN(strlen(m->mnt_dir),strlen(name))) == 0)
blockDevice = m->mnt_fsname;
else if (strcmp(m->mnt_fsname, name) == 0) {
blockDevice = name;
name = m->mnt_dir;
}
}
}
if (blockDevice && strcmp(blockDevice, name) == 0)
name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
status = umount(name);
@@ -73,57 +75,53 @@ do_umount(const char* name, int useMtab)
/* this was a loop device, delete it */
del_loop(blockDevice);
#endif
#if defined BB_MTAB
#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);
}
}
#endif
if ( status == 0 ) {
#if defined BB_MTAB
if ( useMtab==TRUE )
erase_mtab(name);
return 0;
}
else
#endif
return(status);
return( TRUE);
}
return(FALSE);
}
static int
umount_all(int useMtab)
{
int status;
struct mntent *m;
FILE *mountTable;
int status = TRUE;
char *mountpt;
void *iter;
if ((mountTable = setmntent (mtab_file, "r"))) {
while ((m = getmntent (mountTable)) != 0) {
char *blockDevice = m->mnt_fsname;
#if ! defined BB_MTAB
if (strcmp (blockDevice, "/dev/root") == 0) {
struct fstab* fstabItem;
fstabItem = getfsfile ("/");
if (fstabItem != NULL) {
blockDevice = fstabItem->fs_spec;
}
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;
}
#endif
/* Don't umount /proc when doing umount -a */
if (strcmp (blockDevice, "proc") == 0)
continue;
status=do_umount (m->mnt_dir, useMtab);
if (status!=0) {
/* Don't bother retrying the umount on busy devices */
if (errno==EBUSY) {
perror(m->mnt_dir);
continue;
}
status=do_umount (blockDevice, useMtab);
if (status!=0) {
printf ("Couldn't umount %s on %s (type %s): %s\n",
blockDevice, m->mnt_dir, m->mnt_type, strerror(errno));
}
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));
}
}
endmntent (mountTable);
}
return( TRUE);
return (status);
}
extern int
@@ -143,14 +141,19 @@ umount_main(int argc, char** argv)
case 'n':
useMtab = FALSE;
break;
#endif
#ifdef BB_FEATURE_REMOUNT
case 'r':
doRemount = TRUE;
break;
#endif
default:
usage( umount_usage);
}
}
if(umountAll==TRUE) {
mtab_read();
if (umountAll==TRUE) {
exit(umount_all(useMtab));
}
if ( do_umount(*argv,useMtab) == 0 )
@@ -161,3 +164,87 @@ umount_main(int argc, char** argv)
}
}
/* These functions are here because the getmntent functions do not appear
* to be re-entrant, which leads to all sorts of problems when we try to
* use them recursively - randolph
*/
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);
}
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 {
#if !defined BB_MTAB
if (strcmp(cur->device, "/dev/root") == 0) {
struct fstab* fstabItem;
fstabItem = getfsfile ("/");
if (fstabItem != NULL) return fstabItem->fs_spec;
}
#endif
return cur->device;
}
}
cur = cur->next;
}
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);
}
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;
}
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;
}
}