1 /* readlink.c - Return string representation of a symbolic link.
2  *
3  * Copyright 2007 Rob Landley <rob@landley.net>
4 
5 USE_READLINK(NEWTOY(readlink, "<1>1fenq[-fe]", TOYFLAG_USR|TOYFLAG_BIN))
6 
7 config READLINK
8   bool "readlink"
9   default y
10   help
11     usage: readlink FILE
12 
13     With no options, show what symlink points to, return error if not symlink.
14 
15     Options for producing cannonical paths (all symlinks/./.. resolved):
16 
17     -e	cannonical path to existing entry (fail if missing)
18     -f	full path (fail if directory missing)
19     -n	no trailing newline
20     -q	quiet (no output, just error code)
21 */
22 
23 #define FOR_readlink
24 #include "toys.h"
25 
readlink_main(void)26 void readlink_main(void)
27 {
28   char *s;
29 
30   // Calculating full cannonical path?
31 
32   if (toys.optflags & (FLAG_f|FLAG_e))
33     s = xabspath(*toys.optargs, toys.optflags & FLAG_e);
34   else s = xreadlink(*toys.optargs);
35 
36   if (s) {
37     if (!(toys.optflags & FLAG_q))
38       xprintf((toys.optflags & FLAG_n) ? "%s" : "%s\n", s);
39     if (CFG_TOYBOX_FREE) free(s);
40   } else toys.exitval = 1;
41 }
42