Imported Upstream version 93u+upstream

1 files changed, 96 insertions, 0 deletions

diff --git a/src/lib/libcmd/mkfifo.c b/src/lib/libcmd/mkfifo.c
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+++ b/src/lib/libcmd/mkfifo.c
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+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1992-2012 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              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, Shbltin_t* 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;
+}