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| explain_vfork_or_die(3) | FreeBSD Library Functions Manual | explain_vfork_or_die(3) |
NAME
explain_vfork_or_die - create a child process and report errorsSYNOPSIS
#include <libexplain/vfork.h>pid_t explain_vfork_or_die(void);
pid_t explain_vfork_on_error(void);
DESCRIPTION
The explain_vfork_or_die function is used to call the vfork(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_vfork(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_vfork_on_error function is used to call the vfork(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_vfork(3) function, but still returns to the caller.
RETURN VALUE
The explain_vfork_or_die function only returns on success, see vfork(2) for more information. On failure, prints an explanation and exits, it does not return.The explain_vfork_on_error function always returns the value return by the wrapped vfork(2) system call.
EXAMPLE
The explain_vfork_or_die function is intended to be used in a fashion similar to the following example:pid_t result = explain_vfork_or_die();
SEE ALSO
- vfork(2)
- create a child process and block parent
- explain_vfork(3)
- explain vfork(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2009 Peter Miller
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