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Diffstat (limited to 'src/sandbox-dev/canonicalize.c')
| -rw-r--r-- | src/sandbox-dev/canonicalize.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/sandbox-dev/canonicalize.c b/src/sandbox-dev/canonicalize.c deleted file mode 100644 index 038c4720d..000000000 --- a/src/sandbox-dev/canonicalize.c +++ /dev/null @@ -1,194 +0,0 @@ -/* Return the canonical absolute name of a given file. - Copyright (C) 1996, 1997, 1998, 1999, 2000 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* - * $Id: /var/cvsroot/gentoo-src/portage/src/sandbox-dev/Attic/canonicalize.c,v 1.2 2002/08/26 03:28:30 azarah Exp $ - */ - -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <limits.h> -#include <sys/param.h> -#include <sys/stat.h> -#include <errno.h> -#include <stddef.h> - -#ifndef __set_errno -# define __set_errno(val) errno = (val) -#endif - -/* 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. */ - -/* Modified: 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> - * - * Cleaned up unneeded stuff, and change so that it will not - * resolve symlinks. Also prepended a 'e' to functions that - * I did not rip out. - * - */ - -static char * -ecanonicalize (const char *name, char *resolved) -{ - char *rpath, *dest; - const char *start, *end, *rpath_limit; - long int path_max; - - if (name == NULL) - { - /* As per Single Unix Specification V2 we must return an error if - either parameter is a null pointer. We extend this to allow - the RESOLVED parameter to be NULL in case the we are expected to - allocate the room for the return value. */ - __set_errno (EINVAL); - return NULL; - } - - if (name[0] == '\0') - { - /* As per Single Unix Specification V2 we must return an error if - the name argument points to an empty string. */ - __set_errno (ENOENT); - return NULL; - } - -#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)) - { - rpath[0] = '\0'; - goto error; - } - dest = strchr (rpath, '\0'); - } - else - { - rpath[0] = '/'; - dest = rpath + 1; - } - - for (start = end = name; *start; start = end) - { - /* Skip sequence of multiple path-separators. */ - while (*start == '/') - ++start; - - /* Find end of path component. */ - for (end = start; *end && *end != '/'; ++end) - /* Nothing. */; - - if (end - start == 0) - break; - else if (end - start == 1 && start[0] == '.') - /* nothing */; - else if (end - start == 2 && start[0] == '.' && start[1] == '.') - { - /* 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) - { - ptrdiff_t dest_offset = dest - rpath; - - if (resolved) - { - __set_errno (ENAMETOOLONG); - if (dest > rpath + 1) - dest--; - *dest = '\0'; - 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 == NULL) - return NULL; - - dest = rpath + dest_offset; - } - - dest = __mempcpy (dest, start, end - start); - *dest = '\0'; - - } - } -#if 0 - if (dest > rpath + 1 && dest[-1] == '/') - --dest; -#endif - *dest = '\0'; - - return resolved ? memcpy (resolved, rpath, dest - rpath + 1) : rpath; - -error: - if (resolved) - strcpy (resolved, rpath); - else - free (rpath); - return NULL; -} - - -char * -erealpath (const char *name, char *resolved) -{ - if (resolved == NULL) - { - __set_errno (EINVAL); - return NULL; - } - - return ecanonicalize (name, resolved); -} - - -// vim:expandtab noai:cindent ai |