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/* vi: set sw=4 ts=4:
*
* ln.c - Create filesystem links
*
* Copyright 2012 Andre Renaud <andre@bluewatersys.com>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html
USE_LN(NEWTOY(ln, "fs", TOYFLAG_BIN))
config LN
bool "ln"
default n
help
usage: ln [-s] [-f] file1 file2
Create a link from file2 to file1
-s Create a symbolic link
-f Force the creation of the link, even if file2 already exists
*/
#include "toys.h"
#define FLAG_s 1
#define FLAG_f 2
void ln_main(void)
{
char *file1 = toys.optargs[0], *file2 = toys.optargs[1];
/* FIXME: How do we print out the usage info? */
if (!file1 || !file2)
perror_exit("Usage: ln [-s] [-f] file1 file2");
/* Silently unlink the existing target. If it doesn't exist,
* then we just move on */
if (toys.optflags & FLAG_f)
unlink(file2);
if (toys.optflags & FLAG_s) {
if (symlink(file1, file2))
perror_exit("cannot create symbolic link from %s to %s",
file1, file2);
} else {
if (link(file1, file2))
perror_exit("cannot create hard link from %s to %s",
file1, file2);
}
}
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