explain_vfork_or_die(3) - Linux man page
Name
explain_vfork_or_die - create a child process and report errors
Synopsis
#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 0.52
Copyright © 2009 Peter Miller