src/util/spawn_command.c

7 /*	run external command
14 /*	spawn_command() runs a command in a child process and returns
15 /*	the command exit status.
25 /*	Specifies the command to execute as a string. The string is
27 /*	or when it appears to be a shell built-in command, otherwise
28 /*	the command is executed without invoking a shell.
32 /*	The command is specified as an argument vector. This vector is
38 /*	command search path is initialized to _PATH_DEFPATH.
46 /*	descriptors for the command.
48 /*	The user ID to execute the command as. The value -1 is reserved
51 /*	The group ID to execute the command as. The value -1 is reserved
54 /*	The amount of time in seconds the command is allowed to run before
57 /*	The shell to use when executing the command specified with
59 /*	command content.
62 /*	Panic: interface violations (for example, a missing command).
72 /*	exec_command(3) execute command
108     char   *command;			/* or a plain string */
116     char   *shell;			/* command shell */
117     int     time_limit;			/* command time limit */
131     args->command = 0;
148 	    if (args->command)
157 	    args->command = va_arg(ap, char *);
194     if (args->command == 0 && args->argv == 0)
196     if (args->command == 0 && args->shell != 0)
201 /* spawn_command - execute command with extreme prejudice */
225     if (args.command == 0)
226 	args.command = args.argv[0];
231      * on exec flag). If we cannot run the command now, try again some time
261 	 * Environment plumbing. Always reset the command search path. XXX
282 	    argv_add(argv, args.command, (char *) 0);
287 	    exec_command(args.command);
306 	    msg_warn("%s: process id %lu: command time limit exceeded",
307 		     args.command, (unsigned long) pid);