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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 782859fadd20
children
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/* vi: set sw=4 ts=4:
 *
 * tty.c - Show stdin's terminal name
 *
 * Copyright 2011 Rob Landley <rob@landley.net>
 *
 * See http://opengroup.org/onlinepubs/9699919799/utilities/tty.html

USE_TTY(NEWTOY(tty, "s", TOYFLAG_USR|TOYFLAG_BIN))

config TTY
	bool "tty"
	default y
	help
	  Show filename of terminal connected to stdin.

	  Prints "not a tty" and exits with nonzero status if no terminal
	  is connected to stdin.

	  -s	silent mode
*/

#include "toys.h"

void tty_main(void)
{
	char *tty = ttyname(0);

	if (!toys.optflags) puts(tty ? tty : "not a tty");

	toys.exitval = !tty;
}