2  * SPDX-License-Identifier: BSD-3-Clause
58 struct pid {  struct
59 	SLIST_ENTRY(pid) next;
61 	pid_t pid;  argument
64 static SLIST_HEAD(, pid) pidlist = SLIST_HEAD_INITIALIZER(pidlist);  argument
71  * Error handling is built in - if it returns, then it succeeded.
77 	struct pid *cur, *p;  in auto_popen()
78 	pid_t pid;  in auto_popen()  local
90 	cur = malloc(sizeof(struct pid));  in auto_popen()
110 	cur->command = checked_strdup(command);  in auto_popen()
112 	switch (pid = fork()) {  in auto_popen()
113 	case -1:			/* Error. */  in auto_popen()
125 			close(fileno(p->outfp));  in auto_popen()
131 	log_debugx("executing \"%s\" as pid %d", command, pid);  in auto_popen()
134 	cur->outfp = fdopen(outfds[0], "r");  in auto_popen()
139 	cur->pid = pid;  in auto_popen()
142 	return (cur->outfp);  in auto_popen()
148 	struct pid *cur, *last = NULL;  in auto_pclose()
150 	pid_t pid;  in auto_pclose()  local
156 		if (cur->outfp == iop)  in auto_pclose()
161 		return (-1);  in auto_pclose()
168 	fclose(cur->outfp);  in auto_pclose()
171 		pid = wait4(cur->pid, &status, 0, NULL);  in auto_pclose()
172 	} while (pid == -1 && errno == EINTR);  in auto_pclose()
175 		log_warnx("\"%s\", pid %d, terminated with signal %d",  in auto_pclose()
176 		    cur->command, pid, WTERMSIG(status));  in auto_pclose()
181 		log_warnx("\"%s\", pid %d, terminated with exit status %d",  in auto_pclose()
182 		    cur->command, pid, WEXITSTATUS(status));  in auto_pclose()
186 	log_debugx("\"%s\", pid %d, terminated gracefully", cur->command, pid);  in auto_pclose()
188 	free(cur->command);  in auto_pclose()
191 	return (pid == -1 ? -1 : status);  in auto_pclose()