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xbps-rindex: switch named semaphore only for the target architecture.

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This commit is contained in:
Juan RP
2014-01-31 18:44:24 +01:00
parent 4ee0f854bd
commit 4f7385e4a6
5 changed files with 39 additions and 23 deletions
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35
bin/xbps-rindex/sem.c
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@@ -32,33 +32,44 @@
#include "defs.h"
sem_t *
index_lock(void)
struct idxlock *
index_lock(struct xbps_handle *xhp)
{
sem_t *sem;
struct idxlock *il;
if ((il = malloc(sizeof(struct idxlock))) == NULL)
return NULL;
/*
* Generate semaphore name for target architecture.
*/
il->semname = xbps_xasprintf("/xbps-rindex-%s",
xhp->target_arch ? xhp->target_arch : xhp->native_arch);
/*
* Create/open the POSIX named semaphore.
*/
sem = sem_open(_XBPS_RINDEX_SEMNAME, O_CREAT, 0660, 1);
if (sem == SEM_FAILED) {
il->sem = sem_open(il->semname, O_CREAT, 0660, 1);
if (il->sem == SEM_FAILED) {
fprintf(stderr, "%s: failed to create/open named "
"semaphore: %s\n", _XBPS_RINDEX, strerror(errno));
return NULL;
}
if (sem_wait(sem) == -1) {
if (sem_wait(il->sem) == -1) {
fprintf(stderr, "%s: failed to lock named semaphore: %s\n",
_XBPS_RINDEX, strerror(errno));
return NULL;
}
return sem;
return il;
}
void
index_unlock(sem_t *sem)
index_unlock(struct idxlock *il)
{
/* Unblock semaphore, close and destroy it (if possible) */
sem_post(sem);
sem_close(sem);
sem_unlink(_XBPS_RINDEX_SEMNAME);
/* Unlock semaphore, close and destroy it (if possible) */
sem_post(il->sem);
sem_close(il->sem);
sem_unlink(il->semname);
free(il->semname);
free(il);
}