explain_setsid_or_die man page
explain_setsid_or_die — sets process group ID and report errors
The explain_setsid_or_die function is used to call the setsid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setsid(3) function, and then the process terminates by calling
The explain_setsid_on_error function is used to call the setsid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setsid(3) function, but still returns to the caller.
The explain_setsid_or_die function only returns on success, see setsid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setsid_on_error function always returns the value return by the wrapped setsid(2) system call.
The explain_setsid_or_die function is intended to be used in a fashion similar to the following example:
creates a session and sets the process group ID
explain setsid(2) errors
terminate the calling process
libexplain version 1.4
Copyright (C) 2011 Peter Miller