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

bin/xbps-rindex/defs.h

@@ -85,8 +85,13 @@ int	sign_repo(struct xbps_handle *, const char *, const char *,
 bool	repodata_flush(struct xbps_handle *, const char *,
 		xbps_dictionary_t, xbps_dictionary_t, xbps_dictionary_t);
 
+struct idxlock {
+	sem_t *sem;
+	char  *semname;
+};
+
 /* From sem.c */
-sem_t	*index_lock(void);
-void	index_unlock(sem_t *);
+struct idxlock	*index_lock(struct xbps_handle *);
+void		index_unlock(struct idxlock *);
 
 #endif /* !_XBPS_RINDEX_DEFS_H_ */

bin/xbps-rindex/index-add.c

@@ -43,7 +43,7 @@ index_add(struct xbps_handle *xhp, int argc, char **argv, bool force)
 	xbps_array_t array, pkg_files, pkg_links, pkg_cffiles;
 	xbps_dictionary_t idx, idxmeta, idxfiles, binpkgd, pkg_filesd, curpkgd;
 	xbps_object_t obj, fileobj;
-	sem_t *sem;
+	struct idxlock *il;
 	struct xbps_repo *repo;
 	struct stat st;
 	const char *arch;
@@ -51,7 +51,7 @@ index_add(struct xbps_handle *xhp, int argc, char **argv, bool force)
 	int rv = 0, ret = 0;
 	bool flush = false, found = false;
 
-	if ((sem = index_lock()) == NULL)
+	if ((il = index_lock(xhp)) == NULL)
 		return EINVAL;
 	/*
 	 * Read the repository data or create index dictionaries otherwise.
@@ -263,7 +263,7 @@ index_add(struct xbps_handle *xhp, int argc, char **argv, bool force)
 	printf("index-files: %u packages registered.\n", xbps_dictionary_count(idxfiles));
 
 out:
-	index_unlock(sem);
+	index_unlock(il);
 
 	return rv;
 }

bin/xbps-rindex/index-clean.c

@@ -122,12 +122,12 @@ index_clean(struct xbps_handle *xhp, const char *repodir)
 	xbps_dictionary_t idx = NULL, idxmeta = NULL, idxfiles = NULL;
 	struct xbps_repo *repo;
 	struct cbdata cbd;
-	sem_t *sem;
+	struct idxlock *il;
 	char *keyname, *pkgname;
 	int rv = 0;
 	bool flush = false;
 
-	if ((sem = index_lock()) == NULL)
+	if ((il = index_lock(xhp)) == NULL)
 		return EINVAL;
 
 	repo = xbps_repo_open(xhp, repodir);
@@ -207,7 +207,7 @@ index_clean(struct xbps_handle *xhp, const char *repodir)
 			xbps_dictionary_count(idxfiles));
 
 out:
-	index_unlock(sem);
+	index_unlock(il);
 
 	if (idx)
 		xbps_object_release(idx);

bin/xbps-rindex/sem.c

@@ -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);
 }

bin/xbps-rindex/sign.c

@@ -116,7 +116,7 @@ int
 sign_repo(struct xbps_handle *xhp, const char *repodir,
 	const char *privkey, const char *signedby)
 {
-	sem_t *sem;
+	struct idxlock *il;
 	struct stat st;
 	struct xbps_repo *repo;
 	xbps_dictionary_t pkgd, meta = NULL;
@@ -137,7 +137,7 @@ sign_repo(struct xbps_handle *xhp, const char *repodir,
 		return -1;
 	}
 
-	if ((sem = index_lock()) == NULL)
+	if ((il = index_lock(xhp)) == NULL)
 		return EINVAL;
 
 	/*
@@ -296,7 +296,7 @@ sign_repo(struct xbps_handle *xhp, const char *repodir,
 	    xbps_dictionary_count(repo->idx) == 1 ? "" : "s");
 
 out:
-	index_unlock(sem);
+	index_unlock(il);
 
 	if (rsa) {
 		RSA_free(rsa);