view toys/link.c @ 551:2548e6e590b2

Add string to mode_t parser added new function string_to_mode(char *m_string, mode_t base) which parses a given string and converts it to a mode_t. If either + or - are part of m_string the permissions are either added or removed from base. Currently support for permision copy is missing (e.g. g=u), but all other flags should work. Format for m_string: either symbolic modes or octal representation. symbolic modes: [auog][[+-=][rwxst]*] examples: string_to_mode("u=rwx,g=rw,o=r", 0); string_to_mode("a-x", 0777); string_to_mode("0744", 0);
author Daniel Walter <d.walter@0x90.at>
date Mon, 19 Mar 2012 19:57:56 -0500
parents ab6c0adfcc10
children
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/* vi: set sw=4 ts=4:
 *
 * link.c - hardlink a file
 *
 * Copyright 2011 Rob Landley <rob@landley.net>
 *
 * See http://opengroup.org/onlinepubs/9699919799/utilities/link.html

USE_LINK(NEWTOY(link, "<2>2", TOYFLAG_USR|TOYFLAG_BIN))

config LINK
	bool "link"
	default y
	help
	  usage: link FILE NEWLINK

	  Create hardlink to a file.
*/

#include "toys.h"

void link_main(void)
{
	if (link(toys.optargs[0], toys.optargs[1]))
		perror_exit("couldn't link '%s' to '%s'", toys.optargs[1],
			toys.optargs[0]);
}