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| author | Denys Vlasenko | 2012-03-03 15:09:07 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2012-03-03 15:09:07 +0100 |
| commit | e8cfc3f693e8a0cbfc489564c76e00c074f63066 (patch) | |
| tree | 6b89cd91d9fc4b8138b3c5ea08c7c619f1bc0017 | |
| parent | 97e528164183c9a9b4768b0d078b3039a1a6ae36 (diff) | |
| download | busybox-e8cfc3f693e8a0cbfc489564c76e00c074f63066.zip busybox-e8cfc3f693e8a0cbfc489564c76e00c074f63066.tar.gz | |
blkid: if parameters are given, do not scan /dev
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | include/volume_id.h | 2 | ||||
| -rw-r--r-- | util-linux/blkid.c | 5 | ||||
| -rw-r--r-- | util-linux/volume_id/get_devname.c | 24 |
3 files changed, 17 insertions, 14 deletions
diff --git a/include/volume_id.h b/include/volume_id.h index 4a78cd1..a83da89 100644 --- a/include/volume_id.h +++ b/include/volume_id.h @@ -20,7 +20,7 @@ char *get_devname_from_label(const char *spec); char *get_devname_from_uuid(const char *spec); -void display_uuid_cache(void); +void display_uuid_cache(int scan_devices); /* Returns: * 0: no UUID= or LABEL= prefix found diff --git a/util-linux/blkid.c b/util-linux/blkid.c index a9fd9f3..1bbc803 100644 --- a/util-linux/blkid.c +++ b/util-linux/blkid.c @@ -18,11 +18,14 @@ int blkid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int blkid_main(int argc UNUSED_PARAM, char **argv) { + int scan_devices = 1; + while (*++argv) { /* Note: bogus device names don't cause any error messages */ add_to_uuid_cache(*argv); + scan_devices = 0; } - display_uuid_cache(); + display_uuid_cache(scan_devices); return 0; } diff --git a/util-linux/volume_id/get_devname.c b/util-linux/volume_id/get_devname.c index d81e244..230102d 100644 --- a/util-linux/volume_id/get_devname.c +++ b/util-linux/volume_id/get_devname.c @@ -115,7 +115,7 @@ uuidcache_check_device(const char *device, } static struct uuidCache_s* -uuidcache_init(void) +uuidcache_init(int scan_devices) { dbg("DBG: uuidCache=%x, uuidCache"); if (uuidCache) @@ -131,12 +131,12 @@ uuidcache_init(void) * This is unacceptably complex. Let's just scan /dev. * (Maybe add scanning of /sys/block/XXX/dev for devices * somehow not having their /dev/XXX entries created?) */ - - recursive_action("/dev", ACTION_RECURSE, - uuidcache_check_device, /* file_action */ - NULL, /* dir_action */ - NULL, /* userData */ - 0 /* depth */); + if (scan_devices) + recursive_action("/dev", ACTION_RECURSE, + uuidcache_check_device, /* file_action */ + NULL, /* dir_action */ + NULL, /* userData */ + 0 /* depth */); return uuidCache; } @@ -150,7 +150,7 @@ get_spec_by_x(int n, const char *t, int *majorPtr, int *minorPtr) { struct uuidCache_s *uc; - uc = uuidcache_init(); + uc = uuidcache_init(/*scan_devices:*/ 1); while (uc) { switch (n) { case UUID: @@ -215,11 +215,11 @@ get_spec_by_volume_label(const char *s, int *major, int *minor) #endif // UNUSED /* Used by blkid */ -void display_uuid_cache(void) +void display_uuid_cache(int scan_devices) { struct uuidCache_s *uc; - uc = uuidcache_init(); + uc = uuidcache_init(scan_devices); while (uc) { printf("%s:", uc->device); if (uc->label[0]) @@ -264,7 +264,7 @@ char *get_devname_from_label(const char *spec) { struct uuidCache_s *uc; - uc = uuidcache_init(); + uc = uuidcache_init(/*scan_devices:*/ 1); while (uc) { if (uc->label[0] && strcmp(spec, uc->label) == 0) { return xstrdup(uc->device); @@ -278,7 +278,7 @@ char *get_devname_from_uuid(const char *spec) { struct uuidCache_s *uc; - uc = uuidcache_init(); + uc = uuidcache_init(/*scan_devices:*/ 1); while (uc) { /* case of hex numbers doesn't matter */ if (strcasecmp(spec, uc->uc_uuid) == 0) { |