Attachment 219580 Details for Bug 251061 – Add filemon(1)

[patch] Add filemon(1)

filemon-util.diff (text/plain), 5.90 KB, created by Daniel O'Connor on 2020-11-12 02:31:51 UTC

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Creator: Daniel O'Connor

Created: 2020-11-12 02:31:51 UTC

Size: 5.90 KB

patch

obsolete

>diff --git a/share/man/man4/filemon.4 b/share/man/man4/filemon.4
>index 24707fe3e..c4b2a63ff 100644
>--- a/share/man/man4/filemon.4
>+++ b/share/man/man4/filemon.4
>@@ -226,6 +226,7 @@ device to write the
> buffer contents to it.
> .Sh SEE ALSO
> .Xr dtrace 1 ,
>+.Xr filemon 1 ,
> .Xr ktrace 1 ,
> .Xr script 1 ,
> .Xr truss 1 ,
>diff --git a/usr.bin/Makefile b/usr.bin/Makefile
>index 8ea3b1c2b..d9ff679c5 100644
>--- a/usr.bin/Makefile
>+++ b/usr.bin/Makefile
>@@ -40,6 +40,7 @@ SUBDIR=	alias \
> 	expand \
> 	false \
> 	fetch \
>+	filemon \
> 	find \
> 	fmt \
> 	fold \
>diff --git a/usr.bin/filemon/Makefile b/usr.bin/filemon/Makefile
>new file mode 100644
>index 000000000..028546efb
>--- /dev/null
>+++ b/usr.bin/filemon/Makefile
>@@ -0,0 +1,6 @@
>+# $FreeBSD$
>+
>+PROG=	filemon
>+SRCS=	filemon.c
>+
>+.include <bsd.prog.mk>
>diff --git a/usr.bin/filemon/filemon.1 b/usr.bin/filemon/filemon.1
>new file mode 100644
>index 000000000..03973378c
>--- /dev/null
>+++ b/usr.bin/filemon/filemon.1
>@@ -0,0 +1,60 @@
>+.\" Copyright (c) 2002
>+.\"	Daniel O'Connor <darius@dons.net.au>
>+.\"
>+.\" Redistribution and use in source and binary forms, with or without
>+.\" modification, are permitted provided that the following conditions
>+.\" are met:
>+.\" 1. Redistributions of source code must retain the above copyright
>+.\"    notice, this list of conditions and the following disclaimer.
>+.\" 2. Redistributions in binary form must reproduce the above copyright
>+.\"    notice, this list of conditions and the following disclaimer in the
>+.\"    documentation and/or other materials provided with the distribution.
>+.\"
>+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
>+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
>+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
>+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
>+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
>+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
>+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
>+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
>+.\" SUCH DAMAGE.
>+.\"
>+.\" $FreeBSD$
>+.\"
>+.Dd November 12, 2020
>+.Dt FILEMON 1
>+.Os
>+.Sh NAME
>+.Nm filemon
>+.Nd log child process file access using filemon
>+.Sh SYNOPSIS
>+.Nm
>+.Op Fl f Ar trfile
>+.Ar command
>+.Sh DESCRIPTION
>+The
>+.Nm
>+utility is a simple wrapper around the
>+.Xr filemon 4
>+kernel facility (see that manual page for the file format).
>+Unlike
>+.Xr ktrace 1
>+the trace file can be a named pipe.
>+The options are:
>+.Bl -tag -width indent
>+.It Fl f Ar trfile
>+Log trace records to
>+.Ar trfile
>+instead of
>+.Pa filemon.out .
>+.Sh SEE ALSO
>+.Xr ktrace 1 ,
>+.Xr filemon 4
>+.Sh AUTHORS
>+The
>+.Nm
>+utility was written by
>+.An Daniel O'Connor.
>diff --git a/usr.bin/filemon/filemon.c b/usr.bin/filemon/filemon.c
>new file mode 100644
>index 000000000..ed2cc0e65
>--- /dev/null
>+++ b/usr.bin/filemon/filemon.c
>@@ -0,0 +1,91 @@
>+/*-
>+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
>+ *
>+ * Copyright (c) 2020 Daniel O'Connor <darius@dons.net.au>
>+ * All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer
>+ *    in this position and unchanged.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
>+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
>+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
>+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
>+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
>+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
>+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
>+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
>+ * SUCH DAMAGE.
>+ *
>+ * $FreeBSD$
>+ */
>+
>+#include <stdio.h>
>+#include <stdlib.h>
>+#include <sys/types.h>
>+#include <sys/stat.h>
>+#include <sys/wait.h>
>+#include <sys/ioctl.h>
>+#include <dev/filemon/filemon.h>
>+#include <fcntl.h>
>+#include <err.h>
>+#include <unistd.h>
>+
>+static void
>+usage(void)
>+{
>+	fputs("       filemon [-f trfile] command [...]\n", stderr);
>+	exit(1);
>+}
>+
>+int main(int argc, char **argv) {
>+	char ch;
>+	int fm_fd, fm_log;
>+	pid_t child;
>+	const char *tracefile = "filemon.out";
>+
>+	while ((ch = getopt(argc,argv,"f:")) != -1)
>+		switch((char)ch) {
>+		case 'f':
>+			tracefile = optarg;
>+			break;
>+		default:
>+			usage();
>+		}
>+
>+	argv += optind;
>+	argc -= optind;
>+
>+	/* Need something to run */
>+	if (argc == 0)
>+		usage();
>+
>+	if ((fm_fd = open("/dev/filemon", O_RDWR | O_CLOEXEC)) == -1)
>+		err(1, "open(\"/dev/filemon\", O_RDWR)");
>+	if ((fm_log = open(tracefile,
>+		    O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, DEFFILEMODE)) == -1)
>+		err(1, "Cannot open trace file %s", tracefile);
>+
>+	if (ioctl(fm_fd, FILEMON_SET_FD, &fm_log) == -1)
>+		err(1, "Cannot set filemon log file descriptor");
>+
>+	if ((child = fork()) == 0) {
>+		child = getpid();
>+		if (ioctl(fm_fd, FILEMON_SET_PID, &child) == -1)
>+			err(1, "Cannot set filemon PID");
>+		execvp(*argv, argv);
>+		err(1, "exec of '%s' failed", *argv);
>+	} else {
>+		wait(&child);
>+		close(fm_fd);
>+	}
>+}

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