OpenSolaris Launch

2 files changed, 292 insertions, 0 deletions

diff --git a/usr/src/cmd/mkfile/Makefile b/usr/src/cmd/mkfile/Makefile
new file mode 100644
index 0000000000..2773e3b269
--- /dev/null
+++ b/usr/src/cmd/mkfile/Makefile
@@ -0,0 +1,45 @@
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License, Version 1.0 only
+# (the "License").  You may not use this file except in compliance
+# with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+#
+#ident	"%Z%%M%	%I%	%E% SMI"
+#
+# Copyright (c) 1989,1996 by Sun Microsystems, Inc.
+# All rights reserved.
+#
+
+PROG= mkfile
+
+include ../Makefile.cmd
+
+CPPFLAGS += -D_FILE_OFFSET_BITS=64
+
+.KEEP_STATE:
+
+all: $(PROG)
+
+install: all $(ROOTUSRSBINPROG)
+
+clean:
+
+lint:	lint_PROG
+
+include ../Makefile.targ
diff --git a/usr/src/cmd/mkfile/mkfile.c b/usr/src/cmd/mkfile/mkfile.c
new file mode 100644
index 0000000000..e4dfd0e49a
--- /dev/null
+++ b/usr/src/cmd/mkfile/mkfile.c
@@ -0,0 +1,247 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <libintl.h>
+#include <errno.h>
+
+#define	WRITEBUF_SIZE	8192
+
+#define	MIN(a, b)	((a) < (b) ? (a) : (b))
+
+#define	BLOCK_SIZE	512		/* bytes */
+#define	KILOBYTE	1024
+#define	MEGABYTE	(KILOBYTE * KILOBYTE)
+#define	GIGABYTE	(KILOBYTE * MEGABYTE)
+
+#define	FILE_MODE	(S_ISVTX + S_IRUSR + S_IWUSR)
+
+static void usage(void);
+
+char buf[WRITEBUF_SIZE];
+
+int
+main(int argc, char **argv)
+{
+	char	*opts;
+	off_t	size;
+	size_t	len;
+	size_t	mult = 1;
+	int	errors = 0;
+	int	i;
+	int	verbose = 0;	/* option variable */
+	int	nobytes = 0;	/* option variable */
+	int	saverr;
+
+	if (argc == 1)
+		usage();
+
+	while (argv[1] && argv[1][0] == '-') {
+		opts = &argv[1][0];
+		while (*(++opts)) {
+			switch (*opts) {
+			case 'v':
+				verbose++;
+				break;
+			case 'n':
+				nobytes++;
+				break;
+			default:
+				usage();
+			}
+		}
+		argc--;
+		argv++;
+	}
+	if (argc < 3)
+		usage();
+
+	len = strlen(argv[1]);
+	if (len && isalpha(argv[1][len-1])) {
+		switch (argv[1][len-1]) {
+		case 'k':
+		case 'K':
+			mult = KILOBYTE;
+			break;
+		case 'b':
+		case 'B':
+			mult = BLOCK_SIZE;
+			break;
+		case 'm':
+		case 'M':
+			mult = MEGABYTE;
+			break;
+		case 'g':
+		case 'G':
+			mult = GIGABYTE;
+			break;
+		default:
+			(void) fprintf(stderr, "unknown size %s\n", argv[1]);
+			usage();
+		}
+
+		for (i = 0; i <= (len-2); i++) {
+			if (!isdigit(argv[1][i])) {
+				(void) fprintf(stderr, "unknown size "
+					"%s\n", argv[1]);
+				usage();
+			}
+		}
+		argv[1][len-1] = '\0';
+	}
+	size = ((off_t)atoll(argv[1]) * (off_t)mult);
+
+	argv++;
+	argc--;
+
+	while (argc > 1) {
+		int fd;
+
+		if (verbose)
+			(void) fprintf(stdout, "%s %lld bytes\n", argv[1],
+			    (offset_t)size);
+		fd = open(argv[1], O_CREAT|O_TRUNC|O_RDWR, FILE_MODE);
+		if (fd < 0) {
+			saverr = errno;
+			(void) fprintf(stderr,
+			    gettext("Could not open %s: %s\n"),
+			    argv[1], strerror(saverr));
+			errors++;
+			argv++;
+			argc--;
+			continue;
+		}
+		if (lseek(fd, (off_t)size-1, SEEK_SET) < 0) {
+			saverr = errno;
+			(void) fprintf(stderr, gettext(
+			    "Could not seek to offset %ld in %s: %s\n"),
+			    (ulong_t)size-1, argv[1], strerror(saverr));
+			(void) close(fd);
+			errors++;
+			argv++;
+			argc--;
+			continue;
+		} else if (write(fd, "", 1) != 1) {
+			saverr = errno;
+			(void) fprintf(stderr, gettext(
+			    "Could not set length of %s: %s\n"),
+			    argv[1], strerror(saverr));
+			(void) close(fd);
+			errors++;
+			argv++;
+			argc--;
+			continue;
+		}
+
+		if (!nobytes) {
+			off_t written = 0;
+
+			if (lseek(fd, (off_t)0, SEEK_SET) < 0) {
+				saverr = errno;
+				(void) fprintf(stderr, gettext(
+				    "Could not seek to beginning of %s: %s\n"),
+				    argv[1], strerror(saverr));
+				(void) close(fd);
+				errors++;
+				argv++;
+				argc--;
+				continue;
+			}
+			while (written < size) {
+				ssize_t result;
+				size_t bytes = (size_t)MIN(sizeof (buf),
+					size-written);
+
+				if ((result = write(fd, buf, bytes)) !=
+				    (ssize_t)bytes) {
+					saverr = errno;
+					if (result < 0)
+					    result = 0;
+					written += result;
+					(void) fprintf(stderr, gettext(
+			    "%s: initialized %lu of %lu bytes: %s\n"),
+					    argv[1], (ulong_t)written,
+					    (ulong_t)size,
+					    strerror(saverr));
+					errors++;
+					break;
+				}
+				written += bytes;
+			}
+
+			/*
+			 * A write(2) call in the above loop failed so
+			 * close out this file and go on (error was
+			 * already incremented when the write(2) failed).
+			 */
+			if (written < size) {
+				(void) close(fd);
+				argv++;
+				argc--;
+				continue;
+			}
+		}
+		if (close(fd) < 0) {
+			saverr = errno;
+			(void) fprintf(stderr, gettext(
+			    "Error encountered when closing %s: %s\n"),
+			    argv[1], strerror(saverr));
+			errors++;
+			argv++;
+			argc--;
+			continue;
+		}
+
+		/*
+		 * Only set the modes (including the sticky bit) if we
+		 * had no problems.  It is not an error for the chmod(2)
+		 * to fail, but do issue a warning.
+		 */
+		if (chmod(argv[1], FILE_MODE) < 0)
+			(void) fprintf(stderr,
+			    "warning: couldn't set mode to %#o\n", FILE_MODE);
+
+		argv++;
+		argc--;
+	}
+	return (errors);
+}
+
+static void usage()
+{
+	(void) fprintf(stderr,
+		"Usage: mkfile [-nv] <size>[g|k|b|m] <name1> [<name2>] ...\n");
+	exit(1);
+	/* NOTREACHED */
+}