/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1992-2011 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* David Korn
* AT&T Bell Laboratories
*
* mkfifo
*/
static const char usage[] =
"[-?\n@(#)$Id: mkfifo (AT&T Research) 2009-01-02 $\n]"
USAGE_LICENSE
"[+NAME?mkfifo - make FIFOs (named pipes)]"
"[+DESCRIPTION?\bmkfifo\b creates one or more FIFO's. By "
"default, the mode of created FIFO is \ba=rw\b minus the "
"bits set in the \bumask\b(1).]"
"[m:mode]:[mode?Set the mode of created FIFO to \amode\a. "
"\amode\a is symbolic or octal mode as in \bchmod\b(1). Relative "
"modes assume an initial mode of \ba=rw\b.]"
"\n"
"\nfile ...\n"
"\n"
"[+EXIT STATUS?]{"
"[+0?All FIFO's created successfully.]"
"[+>0?One or more FIFO's could not be created.]"
"}"
"[+SEE ALSO?\bchmod\b(1), \bumask\b(1)]"
;
#include <cmd.h>
#include <ls.h>
int
b_mkfifo(int argc, char *argv[], void* context)
{
register char* arg;
register mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
register mode_t mask = 0;
register int mflag = 0;
cmdinit(argc, argv, context, ERROR_CATALOG, 0);
for (;;)
{
switch (optget(argv, usage))
{
case 'm':
mflag = 1;
mode = strperm(arg = opt_info.arg, &opt_info.arg, mode);
if (*opt_info.arg)
error(ERROR_exit(0), "%s: invalid mode", arg);
continue;
case ':':
error(2, "%s", opt_info.arg);
break;
case '?':
error(ERROR_usage(2), "%s", opt_info.arg);
break;
}
break;
}
argv += opt_info.index;
if (error_info.errors || !*argv)
error(ERROR_usage(2), "%s", optusage(NiL));
mask = umask(0);
if (!mflag)
{
mode &= ~mask;
umask(mask);
mask = 0;
}
while (arg = *argv++)
if (mkfifo(arg, mode) < 0)
error(ERROR_system(0), "%s:", arg);
if (mask)
umask(mask);
return error_info.errors != 0;
}