bin/pax/cache.c

19  * 3. Neither the name of the University nor the names of its contributors
56 static UIDC **uidtb = NULL;	/* uid to name cache */
57 static GIDC **gidtb = NULL;	/* gid to name cache */
58 static UIDC **usrtb = NULL;	/* user name to uid cache */
59 static GIDC **grptb = NULL;	/* group name to gid cache */
127 		paxwarn(1, "Unable to allocate memory for user name cache table");
151 		paxwarn(1,"Unable to allocate memory for group name cache table");
159  *	caches the name (if any) for the uid. If frc set, we always return the
160  *	the stored name (if valid or invalid match). We use a simple hash table.
162  *	Pointer to stored name (or an empty string).
183 			return(ptr->name);
206 		(void)snprintf(ptr->name, sizeof(ptr->name), "%lu",
217 		(void)strncpy(ptr->name, pw->pw_name, UNMLEN - 1);
218 		ptr->name[UNMLEN-1] = '\0';
221 	return(ptr->name);
226  *	caches the name (if any) for the gid. If frc set, we always return the
227  *	the stored name (if valid or invalid match). We use a simple hash table.
229  *	Pointer to stored name (or an empty string).
250 			return(ptr->name);
273 		(void)snprintf(ptr->name, sizeof(ptr->name), "%lu",
284 		(void)strncpy(ptr->name, gr->gr_name, GNMLEN - 1);
285 		ptr->name[GNMLEN-1] = '\0';
288 	return(ptr->name);
293  *	caches the uid for a given user name. We use a simple hash table.
295  *	the uid (if any) for a user name, or a -1 if no match can be found
299 uid_name(char *name, uid_t *uid)
308 	if (((namelen = strlen(name)) == 0) || (name[0] == '\0'))
317 	ptr = usrtb[st_hash(name, namelen, UNM_SZ)];
318 	if ((ptr != NULL) && (ptr->valid > 0) && !strcmp(name, ptr->name)) {
331 		ptr = usrtb[st_hash(name, namelen, UNM_SZ)] =
339 		if ((pw = getpwnam(name)) == NULL)
344 	(void)strncpy(ptr->name, name, UNMLEN - 1);
345 	ptr->name[UNMLEN-1] = '\0';
346 	if ((pw = getpwnam(name)) == NULL) {
357  *	caches the gid for a given group name. We use a simple hash table.
359  *	the gid (if any) for a group name, or a -1 if no match can be found
363 gid_name(char *name, gid_t *gid)
372 	if (((namelen = strlen(name)) == 0) || (name[0] == '\0'))
381 	ptr = grptb[st_hash(name, namelen, GID_SZ)];
382 	if ((ptr != NULL) && (ptr->valid > 0) && !strcmp(name, ptr->name)) {
394 		ptr = grptb[st_hash(name, namelen, GID_SZ)] =
402 		if ((gr = getgrnam(name)) == NULL)
408 	(void)strncpy(ptr->name, name, GNMLEN - 1);
409 	ptr->name[GNMLEN-1] = '\0';
410 	if ((gr = getgrnam(name)) == NULL) {