xref: /original-bsd/lib/libc/gen/genbuildname.c (revision db9e1aef)
1 /*
2  * Copyright (c) 1990 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms are permitted
6  * provided that the above copyright notice and this paragraph are
7  * duplicated in all such forms and that any documentation,
8  * advertising materials, and other materials related to such
9  * distribution and use acknowledge that the software was developed
10  * by the University of California, Berkeley.  The name of the
11  * University may not be used to endorse or promote products derived
12  * from this software without specific prior written permission.
13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16  */
17 
18 #if defined(LIBC_SCCS) && !defined(lint)
19 static char sccsid[] = "@(#)genbuildname.c	5.2 (Berkeley) 05/15/90";
20 #endif LIBC_SCCS and not lint
21 
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <string.h>
25 
26 char *objdir = "obj";
27 
28 #define	UNKNOWN	0
29 #define	NODIR	1
30 #define	USEDIR	2
31 
32 char *
33 genbuildname(name)
34 	char *name;
35 {
36 	static int dirlen, chkobjdir = UNKNOWN;
37 	struct stat stbuf;
38 	char *newname;
39 
40 	if (chkobjdir == NODIR || index(name, '/') != (char *)0)
41 		return (name);
42 	if (chkobjdir == UNKNOWN &&
43 	    (stat(objdir, &stbuf) < 0 ||
44 	    (stbuf.st_mode & S_IFMT) != S_IFDIR)) {
45 		chkobjdir = NODIR;
46 		return (name);
47 	} else {
48 		chkobjdir = USEDIR;
49 		dirlen = strlen(objdir) + 2;
50 	}
51 	newname = (char *)malloc(dirlen + strlen(name));
52 	if (newname == (char *)0)
53 		return (name);
54 	strcpy(newname, objdir);
55 	strcat(newname, "/");
56 	strcat(newname, name);
57 	return (newname);
58 }
59