| explain_readlink_or_die(3) | Library Functions Manual | explain_readlink_or_die(3) |
explain_readlink_or_die - read value of a symbolic link and report errors
#include <libexplain/readlink.h>
ssize_t explain_readlink_or_die(const char *pathname, char *data,
size_t data_size);
ssize_t explain_readlink_on_error(const char *pathname, char *data, size_t
data_size))
The explain_readlink_or_die function is used to call the readlink(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_readlink(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_readlink_on_error function is used to call the readlink(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_readlink(3) function, but still returns to the caller.
The explain_readlink_or_die function only returns on success, see readlink(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_readlink_on_error function always returns the value return by the wrapped readlink(2) system call.
The explain_readlink_or_die function is intended to be used in a fashion similar to the following example:
ssize_t result = explain_readlink_or_die(pathname, data, data_size);
libexplain version 1.4
Copyright (C) 2009 Peter Miller