explain_setpgid_or_die(3) - Linux man page
Name
explain_setpgid_or_die - set process group and report errors
Synopsis
#include <libexplain/setpgid.h>
void explain_setpgid_or_die(pid_t pid, pid_t pgid);
int explain_setpgid_on_error(pid_t pid, pid_t pgid);
Description
The explain_setpgid_or_die function is used to call the setpgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setpgid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setpgid_on_error function is used to call the setpgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setpgid(3) function, but still returns to the caller.
- pid
The pid, exactly as to be passed to the setpgid(2) system call.
pgid
The pgid, exactly as to be passed to the setpgid(2) system call.
Return Value
The explain_setpgid_or_die function only returns on success, see setpgid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setpgid_on_error function always returns the value return by the wrapped setpgid(2) system call.
Example
The explain_setpgid_or_die function is intended to be used in a fashion similar to the following example:
-
explain_setpgid_or_die(pid, pgid);
See Also
setpgid(2)
- set process group
- explain_setpgid(3)
- explain setpgid(2) errors
- exit(2)
terminate the calling process
Copyright
libexplain version 0.52
Copyright © 2011 Peter Miller