libexplain/setsid_or_die.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/output.h>
#include <libexplain/setsid.h>

Go to the source code of this file.

Functions
static int	setsid (void)
pid_t	explain_setsid_or_die (void)
pid_t	explain_setsid_on_error (void)

---

Function Documentation

pid_t explain_setsid_on_error

(

void

)

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.

Returns:

The value returned by the wrapped setsid(2) system call.

Example:

This function is intended to be used in a fashion similar to the following example:

 pid_t result = explain_setsid_on_error();
 if (result < 0)
 {
     ...cope with error
     ...no need to print error message
 }

Definition at line 53 of file setsid_or_die.c.

pid_t explain_setsid_or_die

(

void

)

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).

Returns:

This function only returns on success, see setsid(2) for more information. On failure, prints an explanation and exits, it does not return.

Example:

This function is intended to be used in a fashion similar to the following example:

 explain_setsid_or_die();

Definition at line 39 of file setsid_or_die.c.

static int setsid

(

void

)

[static]

Definition at line 29 of file setsid_or_die.c.