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add and expose alpm_unlock

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alpm_unlock is a limited version of alpm_release that does nothing but
the actual unlinking of the lock file and is therefore safe to call from
signal handlers.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Andrew Gregory 2015-11-12 18:06:53 -05:00 committed by Allan McRae
parent 16623a7ea5
commit 7b6f7bbe09
2 changed files with 18 additions and 2 deletions
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1
lib/libalpm/alpm.h
View File

@ -1559,6 +1559,7 @@ char *alpm_compute_sha256sum(const char *filename);
alpm_handle_t *alpm_initialize(const char *root, const char *dbpath,
alpm_errno_t *err);
int alpm_release(alpm_handle_t *handle);
int alpm_unlock(alpm_handle_t *handle);
enum alpm_caps {
ALPM_CAPABILITY_NLS = (1 << 0),

19
lib/libalpm/handle.c
View File

@ -126,8 +126,13 @@ int _alpm_handle_lock(alpm_handle_t *handle)
return (handle->lockfd >= 0 ? 0 : -1);
}
/** Remove a lock file */
int _alpm_handle_unlock(alpm_handle_t *handle)
/** Remove the database lock file
* @param handle the context handle
* @return 0 on success, -1 on error
*
* @note Safe to call from inside signal handlers.
*/
int SYMEXPORT alpm_unlock(alpm_handle_t *handle)
{
ASSERT(handle->lockfile != NULL, return 0);
ASSERT(handle->lockfd >= 0, return 0);
@ -136,6 +141,15 @@ int _alpm_handle_unlock(alpm_handle_t *handle)
handle->lockfd = -1;
if(unlink(handle->lockfile) != 0) {
RET_ERR(handle, ALPM_ERR_SYSTEM, -1);
} else {
return 0;
}
}
int _alpm_handle_unlock(alpm_handle_t *handle)
{
if(alpm_unlock(handle) != 0) {
if(errno == ENOENT) {
_alpm_log(handle, ALPM_LOG_WARNING,
_("lock file missing %s\n"), handle->lockfile);
@ -150,6 +164,7 @@ int _alpm_handle_unlock(alpm_handle_t *handle)
return -1;
}
}
return 0;
}