NAME¶
explain_setsid_or_die - sets process group ID and report errors
SYNOPSIS¶
#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:
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 0.52
Copyright (C) 2011 Peter Miller