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reworked lock handling (patch from VMiklos <vmiklos@frugalware.org>)

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This commit is contained in:
Aurelien Foret 2006-01-26 22:16:57 +00:00
parent 18986b1805
commit 831ff882ae
2 changed files with 27 additions and 21 deletions
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31
lib/libalpm/alpm.c
View File

@ -50,8 +50,6 @@
#include "handle.h"
#include "alpm.h"
#define PM_LOCK "/tmp/pacman.lck"
/* Globals */
pmhandle_t *handle = NULL;
enum __pmerrno_t pm_errno;
@ -76,15 +74,6 @@ int alpm_initialize(char *root)
RET_ERR(PM_ERR_MEMORY, -1);
}
/* lock db */
if(handle->access == PM_ACCESS_RW) {
handle->lckfd = _alpm_lckmk(PM_LOCK);
if(handle->lckfd == -1) {
FREE(handle);
RET_ERR(PM_ERR_HANDLE_LOCK, -1);
}
}
STRNCPY(str, (root) ? root : PM_ROOT, PATH_MAX);
/* add a trailing '/' if there isn't one */
if(str[strlen(str)-1] != '/') {
@ -105,16 +94,14 @@ int alpm_release()
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
/* unlock db */
if(handle->access == PM_ACCESS_RW) {
if(handle->lckfd != -1) {
close(handle->lckfd);
handle->lckfd = -1;
}
if(_alpm_lckrm(PM_LOCK)) {
if(_alpm_lckrm(PM_LOCK) == -1) {
_alpm_log(PM_LOG_WARNING, "could not remove lock file %s", PM_LOCK);
alpm_logaction("warning: could not remove lock file %s", PM_LOCK);
}
}
/* close local database */
if(handle->db_local) {
@ -664,6 +651,12 @@ int alpm_trans_init(unsigned char type, unsigned char flags, alpm_trans_cb_event
* perform sanity checks on type and flags:
* for instance, we can't set UPGRADE and FRESHEN at the same time */
/* lock db */
handle->lckfd = _alpm_lckmk(PM_LOCK);
if(handle->lckfd == -1) {
RET_ERR(PM_ERR_HANDLE_LOCK, -1);
}
handle->trans = trans_new();
if(handle->trans == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
@ -765,6 +758,16 @@ int alpm_trans_release()
FREETRANS(handle->trans);
/* unlock db */
if(handle->lckfd != -1) {
close(handle->lckfd);
handle->lckfd = -1;
}
if(_alpm_lckrm(PM_LOCK) == -1) {
_alpm_log(PM_LOG_WARNING, "could not remove lock file %s", PM_LOCK);
alpm_logaction("warning: could not remove lock file %s", PM_LOCK);
}
return(0);
}
/** @} */

5
lib/libalpm/util.c
View File

@ -225,7 +225,10 @@ int _alpm_lckmk(char *file)
*/
int _alpm_lckrm(char *file)
{
return(unlink(file) == -1);
if(unlink(file) == -1 && errno != ENOENT) {
return(-1);
}
return(0);
}
int _alpm_unpack(char *archive, const char *prefix, const char *fn)