1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2011 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24 * resolvepath implementation
25 */
26
27 #define resolvepath ______resolvepath
28
29 #include <ast.h>
30 #include <error.h>
31
32 #undef resolvepath
33
34 #undef _def_map_ast
35 #include <ast_map.h>
36 #undef _AST_API_H
37 #include <ast_api.h>
38
39 #if defined(__EXPORT__)
40 #define extern __EXPORT__
41 #endif
42
43 extern int
resolvepath(const char * file,char * path,size_t size)44 resolvepath(const char* file, char* path, size_t size)
45 {
46 register char* s;
47 register int n;
48 register int r;
49
50 r = *file != '/';
51 n = strlen(file) + r + 1;
52 if (n >= size)
53 {
54 #ifdef ENAMETOOLONG
55 errno = ENAMETOOLONG;
56 #else
57 errno = ENOMEM;
58 #endif
59 return 0;
60 }
61 if (!r)
62 s = path;
63 else if (!getcwd(path, size - n))
64 return 0;
65 else
66 {
67 s = path + strlen(path);
68 *s++ = '/';
69 }
70 strlcpy(s, file, size - (s - path));
71 return (s = pathcanon(path, size, PATH_PHYSICAL|PATH_DOTDOT|PATH_EXISTS)) ? (s - path) : -1;
72 }
73