| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License, Version 1.0 only |
| * (the "License"). You may not use this file except in compliance |
| * with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| |
| #include <errno.h> |
| #include <limits.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/param.h> |
| #include <sys/sysctl.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| const char * |
| getexecname(void) |
| { |
| static char execname[PATH_MAX + 1] = ""; |
| static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER; |
| char *ptr = NULL; |
| ssize_t rc; |
| |
| (void) pthread_mutex_lock(&mtx); |
| |
| if (strlen(execname) == 0) { |
| int error, name[4]; |
| size_t len; |
| |
| name[0] = CTL_KERN; |
| name[1] = KERN_PROC; |
| name[2] = KERN_PROC_PATHNAME; |
| name[3] = -1; |
| len = PATH_MAX; |
| error = sysctl(name, nitems(name), execname, &len, NULL, 0); |
| if (error != 0) { |
| rc = -1; |
| } else { |
| rc = len; |
| } |
| if (rc == -1) { |
| execname[0] = '\0'; |
| } else { |
| execname[rc] = '\0'; |
| ptr = execname; |
| } |
| } else { |
| ptr = execname; |
| } |
| |
| (void) pthread_mutex_unlock(&mtx); |
| return (ptr); |
| } |