explain_readlink_or_die(3) Library Functions Manual explain_readlink_or_die(3) NAME explain_readlink_or_die - read value of a symbolic link and report errors SYNOPSIS #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)) DESCRIPTION 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 call- ing exit(EXIT_FAILURE). The explain_readlink_on_error function is used to call the readlink(2) sys- tem call. On failure an explanation will be printed to stderr, obtained from the explain_readlink(3) function, but still returns to the caller. pathname The pathname, exactly as to be passed to the readlink(2) system call. data The data, exactly as to be passed to the readlink(2) system call. data_size The data_size, exactly as to be passed to the readlink(2) system call. RETURN VALUE The explain_readlink_or_die function only returns on success, see read- link(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. EXAMPLE 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); SEE ALSO readlink(2) read value of a symbolic link explain_readlink(3) explain readlink(2) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2009 Peter Miller explain_readlink_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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