explain_fchownat_or_die(3)

NAME

explain_fchownat_or_die - change ownership of a file relative to a directory and report errors

SYNOPSIS

#include <libexplain/fchownat.h>

void explain_fchownat_or_die(int dirfd, const char *pathname, int owner, int group, int flags);
int explain_fchownat_on_error(int dirfd, const char *pathname, int owner, int group, int flags);

DESCRIPTION

The explain_fchownat_or_die function is used to call the fchownat(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_fchownat(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_fchownat_on_error function is used to call the fchownat(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_fchownat(3) function, but still returns to the caller.

dirfd: The dirfd, exactly as to be passed to the fchownat(2) system call.

pathname: The pathname, exactly as to be passed to the fchownat(2) system call.

owner: The owner, exactly as to be passed to the fchownat(2) system call.

group: The group, exactly as to be passed to the fchownat(2) system call.

flags: The flags, exactly as to be passed to the fchownat(2) system call.

RETURN VALUE

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

The explain_fchownat_on_error function always returns the value return by the wrapped fchownat(2) system call.

EXAMPLE

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

explain_fchownat_or_die(dirfd, pathname, owner, group, flags);