explain_utimensat_or_die - change file timestamps and report errors
#include <libexplain/utimensat.h>
void explain_utimensat_or_die(int fildes, const char *pathname, const struct
timespec *data, int flags);
int explain_utimensat_on_error(int fildes, const char *pathname, const struct
timespec *data, int flags);
The
explain_utimensat_or_die function is used to call the
utimensat(2) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_utimensat(3) function, and
then the process terminates by calling exit(EXIT_FAILURE).
The
explain_utimensat_on_error function is used to call the
utimensat(2) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_utimensat(3) function, but
still returns to the caller.
- fildes
- The fildes, exactly as to be passed to the utimensat(2) system
call.
- pathname
- The pathname, exactly as to be passed to the utimensat(2) system
call.
- data
- The data, exactly as to be passed to the utimensat(2) system
call.
- flags
- The flags, exactly as to be passed to the utimensat(2) system
call.
The
explain_utimensat_or_die function only returns on success, see
utimensat(2) for more information. On failure, prints an explanation
and exits, it does not return.
The
explain_utimensat_on_error function always returns the value return
by the wrapped
utimensat(2) system call.
The
explain_utimensat_or_die function is intended to be used in a fashion
similar to the following example:
explain_utimensat_or_die(fildes, pathname, data, flags);
- utimensat(2)
- change file timestamps with nanosecond precision
- explain_utimensat(3)
- explain utimensat(2) errors
- exit(2)
- terminate the calling process
libexplain version 1.3
Copyright (C) 2012 Peter Miller