1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1992-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                                                                      *
20***********************************************************************/
21#pragma prototyped
22/*
23 * David Korn
24 * AT&T Bell Laboratories
25 *
26 * mkfifo
27 */
28
29static const char usage[] =
30"[-?\n@(#)$Id: mkfifo (AT&T Research) 2009-01-02 $\n]"
31USAGE_LICENSE
32"[+NAME?mkfifo - make FIFOs (named pipes)]"
33"[+DESCRIPTION?\bmkfifo\b creates one or more FIFO's.  By "
34	"default, the mode of created FIFO is \ba=rw\b minus the "
35	"bits set in the \bumask\b(1).]"
36"[m:mode]:[mode?Set the mode of created FIFO to \amode\a.  "
37	"\amode\a is symbolic or octal mode as in \bchmod\b(1).  Relative "
38	"modes assume an initial mode of \ba=rw\b.]"
39"\n"
40"\nfile ...\n"
41"\n"
42"[+EXIT STATUS?]{"
43        "[+0?All FIFO's created successfully.]"
44        "[+>0?One or more FIFO's could not be created.]"
45"}"
46"[+SEE ALSO?\bchmod\b(1), \bumask\b(1)]"
47;
48
49#include <cmd.h>
50#include <ls.h>
51
52int
53b_mkfifo(int argc, char *argv[], void* context)
54{
55	register char*	arg;
56	register mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
57	register mode_t	mask = 0;
58	register int	mflag = 0;
59
60	cmdinit(argc, argv, context, ERROR_CATALOG, 0);
61	for (;;)
62	{
63		switch (optget(argv, usage))
64		{
65		case 0:
66			break;
67		case 'm':
68			mflag = 1;
69			mode = strperm(arg = opt_info.arg, &opt_info.arg, mode);
70			if (*opt_info.arg)
71				error(ERROR_exit(0), "%s: invalid mode", arg);
72			continue;
73		case ':':
74			error(2, "%s", opt_info.arg);
75			continue;
76		case '?':
77			error(ERROR_usage(2), "%s", opt_info.arg);
78			continue;
79		}
80		break;
81	}
82	argv += opt_info.index;
83	if (error_info.errors || !*argv)
84		error(ERROR_usage(2), "%s", optusage(NiL));
85	mask = umask(0);
86	if (!mflag)
87	{
88		mode &= ~mask;
89		umask(mask);
90		mask = 0;
91	}
92	while (arg = *argv++)
93		if (mkfifo(arg, mode) < 0)
94			error(ERROR_system(0), "%s:", arg);
95	if (mask)
96		umask(mask);
97	return error_info.errors != 0;
98}
99