245 lines
6.9 KiB
Bash
Executable File
245 lines
6.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# opensnoop - snoop file opens as they occur.
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# Written using DTrace (Solaris 10 3/05).
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#
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# $Id: opensnoop 3 2007-08-01 10:50:08Z brendan $
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#
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# USAGE: opensnoop [-a|-A|-ceghsvxZ] [-f pathname] [-n name] [-p PID]
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#
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# opensnoop # default output
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#
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# -a # print most data
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# -A # dump all data, space delimited
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# -c # print cwd of process
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# -e # print errno value
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# -g # print command arguments
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# -s # print start time, us
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# -v # print start time, string
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# -x # only print failed opens
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# -Z # print zonename
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# -f pathname # file pathname to snoop
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# -n name # command name to snoop
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# -p PID # process ID to snoop
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# eg,
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# opensnoop -v # human readable timestamps
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# opensnoop -e # see error codes
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# opensnoop -f /etc/passwd # snoop this file only
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#
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# FIELDS:
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# ZONE Zone name
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# UID User ID
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# PID Process ID
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# PPID Parent Process ID
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# FD file descriptor (-1 for error)
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# ERR errno value (see /usr/include/sys/errno.h)
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# CWD print current working directory of process
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# PATH pathname for file open
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# COMM command name for the process
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# ARGS argument listing for the process
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# TIME timestamp for the open event, us
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# STRTIME timestamp for the open event, string
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#
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# SEE ALSO: truss, BSM auditing.
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#
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# COPYRIGHT: Copyright (c) 2006 Brendan Gregg.
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License, Version 1.0 only
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# (the "License"). You may not use this file except in compliance
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# with the License.
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#
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# You can obtain a copy of the license at Docs/cddl1.txt
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# CDDL HEADER END
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#
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# Author: Brendan Gregg [Sydney, Australia]
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#
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# 09-May-2004 Brendan Gregg Created this.
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# 21-Jan-2005 " " Wrapped in sh to provide options.
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# 08-May-2005 " " Rewritten for performance.
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# 14-May-2005 " " Added errno.
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# 28-Jun-2005 " " Added cwd, zonename.
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# 17-Sep-2005 " " Increased switchrate, fixed page fault bug.
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# 16-Jan-2006 " " Added -n, -p.
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# 16-Jan-2006 " " Last update.
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#
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##############################
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# --- Process Arguments ---
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#
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### Default variables
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opt_dump=0; opt_file=0; opt_time=0; opt_timestr=0; opt_args=0
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opt_zone=0; opt_cwd=0; opt_failonly=0; opt_err=0; filter=0; pathname=.
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opt_name=0; opt_pid=0; pname=.; pid=0
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### Process options
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while getopts aAcef:ghn:p:svxZ name
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do
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case $name in
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a) opt_time=1; opt_timestr=1; opt_args=1; opt_err=1 ;;
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A) opt_dump=1 ;;
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c) opt_cwd=1 ;;
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e) opt_err=1 ;;
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g) opt_args=1 ;;
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f) opt_file=1; pathname=$OPTARG ;;
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n) opt_name=1; pname=$OPTARG ;;
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p) opt_pid=1; pid=$OPTARG ;;
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s) opt_time=1 ;;
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v) opt_timestr=1 ;;
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x) opt_failonly=1 ;;
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Z) opt_zone=1 ;;
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h|?) cat <<-END >&2
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USAGE: opensnoop [-a|-A|-ceghsvxZ] [-f pathname]
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[-n name] [-p PID]
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opensnoop # default output
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-a # print most data
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-A # dump all data, space delimited
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-c # print cwd of process
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-e # print errno value
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-g # print command arguments
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-s # print start time, us
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-v # print start time, string
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-x # only print failed opens
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-Z # print zonename
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-f pathname # pathname name to snoop
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-n name # process name to snoop
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-p PID # process ID to snoop
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eg,
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opensnoop -v # human readable timestamps
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opensnoop -e # see error codes
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opensnoop -f /etc/motd # snoop this file only
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END
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exit 1
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esac
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done
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### Option logic
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if [ $opt_dump -eq 1 ]; then
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opt_zone=0; opt_cwd=0; opt_time=0; opt_timestr=0; opt_args=2
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fi
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if [ $opt_name -eq 1 -o $opt_pid -eq 1 ]; then
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filter=1
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fi
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#################################
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# --- Main Program, DTrace ---
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#
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/usr/sbin/dtrace -n '
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/*
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* Command line arguments
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*/
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inline int OPT_dump = '$opt_dump';
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inline int OPT_file = '$opt_file';
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inline int OPT_args = '$opt_args';
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inline int OPT_cwd = '$opt_cwd';
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inline int OPT_err = '$opt_err';
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inline int OPT_zone = '$opt_zone';
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inline int OPT_time = '$opt_time';
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inline int OPT_timestr = '$opt_timestr';
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inline int OPT_failonly = '$opt_failonly';
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inline int OPT_pid = '$opt_pid';
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inline int OPT_name = '$opt_name';
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inline int FILTER = '$filter';
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inline int PID = '$pid';
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inline string PATHNAME = "'$pathname'";
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inline string NAME = "'$pname'";
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#pragma D option quiet
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#pragma D option switchrate=10hz
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/*
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* Print header
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*/
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dtrace:::BEGIN
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{
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/*
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* ternary operators are used to improve performance.
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* OPT_args is unusual in that it can have one of three values.
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*/
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/* print optional headers */
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OPT_time ? printf("%-14s ", "TIME") : 1;
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OPT_timestr ? printf("%-20s ", "STRTIME") : 1;
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OPT_zone ? printf("%-10s ", "ZONE") : 1;
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/* print dump headers */
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OPT_dump ? printf("%s %s %s %s %s %s %s %s %s %s %s", "ZONE",
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"TIME", "UID", "PID", "PPID", "COMM", "FD", "ERR", "CWD",
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"PATH", "ARGS") : printf("%5s %6s ","UID","PID");
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/* print main headers */
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OPT_args == 0 ? printf("%-12s ", "COMM") : 1;
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OPT_dump == 0 ? printf("%3s ", "FD") : 1;
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OPT_err ? printf("%3s ", "ERR") : 1;
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OPT_cwd ? printf("%-20s ", "CWD") : 1;
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OPT_dump == 0 ? printf("%-20s ", "PATH") : 1;
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OPT_args == 1 ? printf("%s", "ARGS") : 1;
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printf("\n");
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}
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/*
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* Print open event
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*/
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syscall::open:entry
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{
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/* save pathname */
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self->pathp = arg0;
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/* default is to trace unless filtering */
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self->ok = FILTER ? 0 : 1;
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/* check each filter */
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(OPT_name == 1 && NAME == execname) ? self->ok = 1 : 1;
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(OPT_pid == 1 && PID == pid) ? self->ok = 1 : 1;
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/* OPT_file is checked on return to ensure pathp is mapped */
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}
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syscall::open:return
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/self->ok && (! OPT_failonly || (int)arg0 < 0) &&
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((OPT_file == 0) || (OPT_file == 1 && PATHNAME == copyinstr(self->pathp)))/
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{
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/* print optional fields */
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OPT_time ? printf("%-14d ", timestamp/1000) : 1;
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OPT_timestr ? printf("%-20Y ", walltimestamp) : 1;
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OPT_zone ? printf("%-10s ", zonename) : 1;
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/* print dump fields */
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OPT_dump ? printf("%s %d %d %d %d %s %d %d %s %s %S", zonename,
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timestamp/1000, uid, pid, ppid, execname, (int)arg0, errno,
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cwd, copyinstr(self->pathp), curpsinfo->pr_psargs) :
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printf("%5d %6d ", uid, pid);
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/* print main fields */
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OPT_args == 0 ? printf("%-12s ", execname) : 1;
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OPT_dump == 0 ? printf("%3d ", (int)arg0) : 1;
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OPT_err ? printf("%3d ", errno) : 1;
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OPT_cwd ? printf("%-20s ", cwd) : 1;
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OPT_dump == 0 ? printf("%-20s ", copyinstr(self->pathp)) : 1;
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OPT_args == 1 ? printf("%S", curpsinfo->pr_psargs) : 1;
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printf("\n");
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/* cleanup */
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self->pathp = 0;
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self->ok = 0;
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}
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/*
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* Cleanup
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*/
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syscall::open:return
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/self->ok/
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{
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self->pathp = 0;
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self->ok = 0;
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}
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'
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