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libdm: introduce and use DEV_UUID macro

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To automatically prefer mangled UUID over unmangled UUID. The same
logic that is already used for dm name mangling...
This commit is contained in:
Peter Rajnoha 2012-10-10 17:02:19 +02:00
parent 8dccbae35e
commit 842167eb17
2 changed files with 9 additions and 7 deletions
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15
libdm/ioctl/libdm-iface.c
View File

@ -1083,7 +1083,7 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
}
/* Does driver support device number referencing? */
if (_dm_version_minor < 3 && !DEV_NAME(dmt) && !dmt->uuid && dmi->dev) {
if (_dm_version_minor < 3 && !DEV_NAME(dmt) && !DEV_UUID(dmt) && dmi->dev) {
if (!_lookup_dev_name(dmi->dev, dmi->name, sizeof(dmi->name))) {
log_error("Unable to find name for device (%" PRIu32
":%" PRIu32 ")", dmt->major, dmt->minor);
@ -1099,8 +1099,8 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt, unsigned repeat_count)
dmt->major < 0))
strncpy(dmi->name, DEV_NAME(dmt), sizeof(dmi->name));
if (dmt->uuid)
strncpy(dmi->uuid, dmt->uuid, sizeof(dmi->uuid));
if (DEV_UUID(dmt))
strncpy(dmi->uuid, DEV_UUID(dmt), sizeof(dmi->uuid));
if (dmt->type == DM_DEVICE_SUSPEND)
dmi->flags |= DM_SUSPEND_FLAG;
@ -1510,7 +1510,7 @@ static int _check_children_not_suspended_v4(struct dm_task *dmt, uint64_t device
else
log_error(INTERNAL_ERROR "Attempt to suspend device %s%s%s%.0d%s%.0d%s%s"
"that uses already-suspended device (%u:%u)",
DEV_NAME(dmt) ? : "", dmt->uuid ? : "",
DEV_NAME(dmt) ? : "", DEV_UUID(dmt) ? : "",
dmt->major > 0 ? "(" : "",
dmt->major > 0 ? dmt->major : 0,
dmt->major > 0 ? ":" : "",
@ -1792,6 +1792,7 @@ int dm_task_run(struct dm_task *dmt)
unsigned ioctl_retry = 1;
int retryable = 0;
const char *dev_name = DEV_NAME(dmt);
const char *dev_uuid = DEV_UUID(dmt);
if ((unsigned) dmt->type >=
(sizeof(_cmd_data_v4) / sizeof(*_cmd_data_v4))) {
@ -1807,7 +1808,7 @@ int dm_task_run(struct dm_task *dmt)
return _create_and_load_v4(dmt);
if (dmt->type == DM_DEVICE_MKNODES && !dev_name &&
!dmt->uuid && dmt->major <= 0)
!dev_uuid && dmt->major <= 0)
return _mknodes_v4(dmt);
if ((dmt->type == DM_DEVICE_RELOAD) && dmt->suppress_identical_reload)
@ -1828,8 +1829,8 @@ int dm_task_run(struct dm_task *dmt)
"%s%s%s %s%.0d%s%.0d%s%s",
suspended_counter,
dev_name ? : "",
dmt->uuid ? " UUID " : "",
dmt->uuid ? : "",
dev_uuid ? " UUID " : "",
dev_uuid ? : "",
dmt->major > 0 ? "(" : "",
dmt->major > 0 ? dmt->major : 0,
dmt->major > 0 ? ":" : "",

1
libdm/libdm-common.h
View File

@ -21,6 +21,7 @@
#define DM_DEFAULT_NAME_MANGLING_MODE_ENV_VAR_NAME "DM_DEFAULT_NAME_MANGLING_MODE"
#define DEV_NAME(dmt) (dmt->mangled_dev_name ? : dmt->dev_name)
#define DEV_UUID(DMT) (dmt->mangled_uuid ? : dmt->uuid)
int mangle_string(const char *str, const char *str_name, size_t len,
char *buf, size_t buf_len, dm_string_mangling_t mode);