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-rw-r--r--support/canonicalize.c202
1 files changed, 0 insertions, 202 deletions
diff --git a/support/canonicalize.c b/support/canonicalize.c
deleted file mode 100644
index 2ff22847..00000000
--- a/support/canonicalize.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/* Return the canonical absolute name of a given file.
- Copyright (C) 1996 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <limits.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <errno.h>
-
-#include <gnome-argp.h>
-
-/* Return the canonical absolute name of file NAME. A canonical name
- does not contain any `.', `..' components nor any repeated path
- separators ('/') or symlinks. All path components must exist. If
- RESOLVED is null, the result is malloc'd; otherwise, if the
- canonical name is PATH_MAX chars or more, returns null with `errno'
- set to ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars,
- returns the name in RESOLVED. If the name cannot be resolved and
- RESOLVED is non-NULL, it contains the path of the first component
- that cannot be resolved. If the path can be resolved, RESOLVED
- holds the same value as the value returned. */
-
-#ifdef _LIBC
-#define set_errno(e) __set_errno(e)
-#else
-#define set_errno(e) errno = (e)
-#endif
-
-static char *
-canonicalize (const char *name, char *resolved)
-{
- char *rpath, *dest, *extra_buf = NULL;
- const char *start, *end, *rpath_limit;
- long int path_max;
- int num_links = 0;
-
-#ifdef PATH_MAX
- path_max = PATH_MAX;
-#else
- path_max = pathconf (name, _PC_PATH_MAX);
- if (path_max <= 0)
- path_max = 1024;
-#endif
-
- rpath = resolved ? __alloca (path_max) : malloc (path_max);
- rpath_limit = rpath + path_max;
-
- if (name[0] != '/')
- {
- if (!getcwd (rpath, path_max))
- goto error;
- dest = strchr (rpath, '\0');
- }
- else
- {
- rpath[0] = '/';
- dest = rpath + 1;
- }
-
- for (start = end = name; *start; start = end)
- {
- struct stat st;
- int n;
-
- /* skip sequence of multiple path-separators: */
- while (*start == '/') ++start;
-
- /* find end of path component: */
- for (end = start; *end && *end != '/'; ++end);
-
- if (end - start == 0)
- break;
- else if (strncmp (start, ".", end - start) == 0)
- /* nothing */;
- else if (strncmp (start, "..", end - start) == 0) {
- /* back up to previous component, ignore if at root already: */
- if (dest > rpath + 1)
- while ((--dest)[-1] != '/');
- } else
- {
- size_t new_size;
-
- if (dest[-1] != '/')
- *dest++ = '/';
-
- if (dest + (end - start) >= rpath_limit)
- {
- if (resolved)
- {
- set_errno (ENAMETOOLONG);
- goto error;
- }
- new_size = rpath_limit - rpath;
- if (end - start + 1 > path_max)
- new_size += end - start + 1;
- else
- new_size += path_max;
- rpath = realloc (rpath, new_size);
- rpath_limit = rpath + new_size;
- if (!rpath)
- return NULL;
- }
-
- memcpy (dest, start, end - start);
- dest += end - start;
- *dest = '\0';
-
- if (__lstat (rpath, &st) < 0)
- goto error;
-
- if (S_ISLNK (st.st_mode))
- {
- char *buf = __alloca (path_max);
-
- if (++num_links > MAXSYMLINKS)
- {
- set_errno (ELOOP);
- goto error;
- }
-
- n = readlink (rpath, buf, path_max);
- if (n < 0)
- goto error;
- buf[n] = '\0';
-
- if (!extra_buf)
- extra_buf = __alloca (path_max);
-
- if ((long int) (n + strlen (end)) >= path_max)
- {
- set_errno (ENAMETOOLONG);
- goto error;
- }
-
- /* careful here, end may be a pointer into extra_buf... */
- strcat (buf, end);
- strcpy (extra_buf, buf);
- name = end = extra_buf;
-
- if (buf[0] == '/')
- dest = rpath + 1; /* it's an absolute symlink */
- else
- /* back up to previous component, ignore if at root already: */
- if (dest > rpath + 1)
- while ((--dest)[-1] != '/');
- }
- else
- num_links = 0;
- }
- }
- if (dest > rpath + 1 && dest[-1] == '/')
- --dest;
- *dest = '\0';
-
- return resolved ? strcpy (resolved, rpath) : rpath;
-
-error:
- if (resolved)
- strcpy (resolved, rpath);
- else
- free (rpath);
- return NULL;
-}
-
-char *
-realpath (const char *name, char *resolved)
-{
- if (resolved == NULL)
- {
- set_errno (EINVAL);
- return NULL;
- }
-
- return canonicalize (name, resolved);
-}
-
-#if 0
-char *
-canonicalize_file_name (const char *name)
-{
- return canonicalize (name, NULL);
-}
-#endif