Mercurial > gnulib
view lib/xreadlinkat.c @ 40237:b1386ce84ff5
fatal-signal: Add function that lists the fatal signals.
* lib/fatal-signal.h (get_fatal_signals): New declaration.
* lib/fatal-signal.c (get_fatal_signals): New function.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 16 Mar 2019 17:48:06 +0100 |
parents | b06060465f09 |
children |
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/* xreadlinkat.c -- readlink wrapper to return the link name in malloc'd storage Copyright (C) 2001, 2003-2007, 2009-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Jim Meyering <jim@meyering.net>, and Bruno Haible <bruno@clisp.org>, and Eric Blake <ebb9@byu.net>. */ #include <config.h> /* Specification. */ #include "xreadlink.h" #include <errno.h> #include "areadlink.h" #include "xalloc.h" /* Call readlinkat to get the symbolic link value of FILENAME relative to FD. Return a pointer to that NUL-terminated string in malloc'd storage. If readlinkat fails, return NULL and set errno (although failure to change directory will issue a diagnostic and exit). If realloc fails, or if the link value is longer than SIZE_MAX :-), give a diagnostic and exit. */ char * xreadlinkat (int fd, char const *filename) { char *result = areadlinkat (fd, filename); if (result == NULL && errno == ENOMEM) xalloc_die (); return result; }