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