1N/A/***********************************************************************
1N/A* *
1N/A* This software is part of the ast package *
1N/A* Copyright (c) 1985-2011 AT&T Intellectual Property *
1N/A* and is licensed under the *
1N/A* Common Public License, Version 1.0 *
1N/A* by AT&T Intellectual Property *
1N/A* *
1N/A* A copy of the License is available at *
1N/A* http://www.opensource.org/licenses/cpl1.0.txt *
1N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
1N/A* *
1N/A* Information and Software Systems Research *
1N/A* AT&T Research *
1N/A* Florham Park NJ *
1N/A* *
1N/A* Glenn Fowler <gsf@research.att.com> *
1N/A* David Korn <dgk@research.att.com> *
1N/A* Phong Vo <kpv@research.att.com> *
1N/A* *
1N/A***********************************************************************/
1N/A#pragma prototyped
1N/A/*
1N/A * Glenn Fowler
1N/A * AT&T Bell Laboratories
1N/A *
1N/A * return path to file a/b with access mode using : separated dirs
1N/A * both a and b may be 0
1N/A * if a==".." then relative paths in dirs are ignored
1N/A * if (mode&PATH_REGULAR) then path must not be a directory
1N/A * if (mode&PATH_ABSOLUTE) then path must be rooted
1N/A * path returned in path buffer
1N/A */
1N/A
1N/A#define _AST_API_H 1
1N/A
1N/A#include <ast.h>
1N/A
1N/Achar*
1N/Apathaccess(char* path, const char* dirs, const char* a, const char* b, int mode)
1N/A{
1N/A return pathaccess_20100601(dirs, a, b, mode, path, PATH_MAX);
1N/A}
1N/A
1N/A#undef _AST_API_H
1N/A
1N/A#include <ast_api.h>
1N/A
1N/Achar*
1N/Apathaccess_20100601(register const char* dirs, const char* a, const char* b, register int mode, register char* path, size_t size)
1N/A{
1N/A int sib = a && a[0] == '.' && a[1] == '.' && a[2] == 0;
1N/A int sep = ':';
1N/A char cwd[PATH_MAX];
1N/A
1N/A do
1N/A {
1N/A dirs = pathcat(dirs, sep, a, b, path, size);
1N/A pathcanon(path, size, 0);
1N/A if ((!sib || *path == '/') && pathexists(path, mode))
1N/A {
1N/A if (*path == '/' || !(mode & PATH_ABSOLUTE))
1N/A return path;
1N/A dirs = getcwd(cwd, sizeof(cwd));
1N/A sep = 0;
1N/A }
1N/A } while (dirs);
1N/A return 0;
1N/A}