xref: /original-bsd/usr.bin/f77/libU77/symlnk_.c (revision 50dd0bba)
1 /*
2  * Copyright (c) 1980 Regents of the University of California.
3  * All rights reserved.  The Berkeley software License Agreement
4  * specifies the terms and conditions for redistribution.
5  *
6  *	@(#)symlnk_.c	5.1	06/07/85
7  */
8 
9 /*
10  * make a symbolic link to a file
11  *
12  * calling sequence:
13  *	ierror = symlnk(name1, name2)
14  * where:
15  *	name1 is the pathname of an existing file
16  *	name2 is a pathname that will become a symbolic link to name1
17  *	ierror will be 0 if successful; a system error code otherwise.
18  */
19 
20 #include <sys/param.h>
21 #include "../libI77/f_errno.h"
22 
23 #ifndef	MAXPATHLEN
24 #define	MAXPATHLEN	128
25 #endif
26 
27 long symlnk_(name1, name2, n1len, n2len)
28 char *name1, *name2;
29 long n1len, n2len;
30 {
31 	char buf1[MAXPATHLEN];
32 	char buf2[MAXPATHLEN];
33 
34 	if (n1len >= sizeof buf1 || n2len >= sizeof buf2)
35 		return((long)(errno=F_ERARG));
36 	g_char(name1, n1len, buf1);
37 	g_char(name2, n2len, buf2);
38 	if (buf1[0] == '\0' || buf2[0] == '\0')
39 		return((long)(errno=F_ERARG));
40 	if (symlink(buf1, buf2) != 0)
41 		return((long)errno);
42 	return(0L);
43 }
44