diff options
Diffstat (limited to 'gnulib/lib/xreadlinkat.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/xreadlinkat.c | 46 |
2 files changed, 46 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/xreadlinkat.c b/gnulib/lib/xreadlinkat.c new file mode 100644 index 0000000..ca42634 --- /dev/null +++ b/gnulib/lib/xreadlinkat.c @@ -0,0 +1,46 @@ +/* xreadlinkat.c -- readlink wrapper to return the link name in malloc'd storage + + Copyright (C) 2001, 2003-2007, 2009-2011 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 <http://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; +} |