BSD 4_2 release

[unix-history] / usr / src / usr.lib / libU77 / symlnk_.c

/*
char id_symlnk[] = "@(#)symlnk_.c       1.1";
*
* make a symbolic link to a file
*
* calling sequence:
*      ierror = symlnk(name1, name2)
* where:
*      name1 is the pathname of an existing file
*      name2 is a pathname that will become a symbolic link to name1
*      ierror will be 0 if successful; a system error code otherwise.
*/

#include <sys/param.h>
#include "../libI77/f_errno.h"

#ifndef MAXPATHLEN
#define MAXPATHLEN      128
#endif

long symlnk_(name1, name2, n1len, n2len)
char *name1, *name2;
long n1len, n2len;
{
       char buf1[MAXPATHLEN];
       char buf2[MAXPATHLEN];

       if (n1len >= sizeof buf1 || n2len >= sizeof buf2)
               return((long)(errno=F_ERARG));
       g_char(name1, n1len, buf1);
       g_char(name2, n2len, buf2);
       if (buf1[0] == '\0' || buf2[0] == '\0')
               return((long)(errno=F_ERARG));
       if (symlink(buf1, buf2) != 0)
               return((long)errno);
       return(0L);
}