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-rw-r--r--lib/xreadlink.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/lib/xreadlink.c b/lib/xreadlink.c
deleted file mode 100644
index b8bb3c4df..000000000
--- a/lib/xreadlink.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/* xreadlink.c -- readlink wrapper to return the link name in malloc'd storage
-
- Copyright (C) 2001, 2003, 2004, 2005 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 2, 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; see the file COPYING.
- If not, write to the Free Software Foundation,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-/* Written by Jim Meyering <jim@meyering.net> */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "xreadlink.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-#ifndef SSIZE_MAX
-# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
-#endif
-
-#define MAXSIZE (SIZE_MAX < SSIZE_MAX ? SIZE_MAX : SSIZE_MAX)
-
-#include "xalloc.h"
-
-/* Call readlink to get the symbolic link value of FILE.
- SIZE is a hint as to how long the link is expected to be;
- typically it is taken from st_size. It need not be correct.
- Return a pointer to that NUL-terminated string in malloc'd storage.
- If readlink fails, return NULL (caller may use errno to diagnose).
- If malloc fails, or if the link value is longer than SSIZE_MAX :-),
- give a diagnostic and exit. */
-
-char *
-xreadlink (char const *file, size_t size)
-{
- /* The initial buffer size for the link value. A power of 2
- detects arithmetic overflow earlier, but is not required. */
- size_t buf_size = size < MAXSIZE ? size + 1 : MAXSIZE;
-
- while (1)
- {
- char *buffer = xmalloc (buf_size);
- ssize_t r = readlink (file, buffer, buf_size);
- size_t link_length = r;
-
- /* On AIX 5L v5.3 and HP-UX 11i v2 04/09, readlink returns -1
- with errno == ERANGE if the buffer is too small. */
- if (r < 0 && errno != ERANGE)
- {
- int saved_errno = errno;
- free (buffer);
- errno = saved_errno;
- return NULL;
- }
-
- if (link_length < buf_size)
- {
- buffer[link_length] = 0;
- return buffer;
- }
-
- free (buffer);
- if (buf_size <= MAXSIZE / 2)
- buf_size *= 2;
- else if (buf_size < MAXSIZE)
- buf_size = MAXSIZE;
- else
- xalloc_die ();
- }
-}