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| explain_setsid_or_die(3) | FreeBSD Library Functions Manual | explain_setsid_or_die(3) |
NAME
explain_setsid_or_die - sets process group ID and report errorsSYNOPSIS
#include <libexplain/setsid.h>pid_t explain_setsid_or_die(void);
pid_t explain_setsid_on_error(void);
DESCRIPTION
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 exit(EXIT_FAILURE).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.
RETURN VALUE
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.
EXAMPLE
The explain_setsid_or_die function is intended to be used in a fashion similar to the following example:explain_setsid_or_die();
SEE ALSO
- setsid(2)
- creates a session and sets the process group ID
- explain_setsid(3)
- explain setsid(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2011 Peter Miller
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