Date: Fri, 5 Dec 2014 16:39:16 -0800 From: <dteske@FreeBSD.org> To: <freebsd-dtrace@freebsd.org> Cc: dteske@FreeBSD.org, 'Julian Elischer' <julian@freebsd.org>, 'Michael Dexter' <editor@callfortesting.org> Subject: DTrace script to trace process execution Message-ID: <064f01d010ed$11445990$33cd0cb0$@FreeBSD.org>
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[-- Attachment #1 --]
Someone asked me about having a DTrace script that displays
"ps axwww"-like info each time a process is executed.
Well, I'm actually more of a fan of "pstree"-like layout, so I
wrote a DTrace script that produces output similar to
sysutils/pstree each/everytime a process is executed.
Sample output of attached "watch_execve.d":
2014 Dec 5 13:31:30 bash[40851]: ls -A
-+= 00809 0.0 /usr/sbin/sshd
\-+= 40829 0.0 sshd: support@pts/0
\-+= 40851 0.0 -bash
\-+= 27188 0.0 ls -A
If you don't want the pstree style info, you can simply run:
watch_execve.d | grep -v '^[[:space:]]'
--
Cheers,
Devin
[-- Attachment #2 --]
#!/usr/sbin/dtrace -s
/* -
* Copyright (c) 2014 Devin Teske <dteske@FreeBSD.org>
* 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.
* 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.
*
* $Title: dtrace(1) script to log process(es) entering vfs::vop_remove $
*/
#pragma D option quiet
#pragma D option dynvarsize=16m
#pragma D option switchrate=10hz
/*********************************************************/
syscall::execve:entry /* probe ID 1 */
{
this->caller_execname = execname;
}
/*********************************************************/
syscall::execve:return /execname != this->caller_execname/ /* probe ID 2 */
{
/*
* Examine process, parent process, and grandparent process details
*/
/******************* CURPROC *******************/
this->proc = curthread->td_proc;
this->pid0 = this->proc->p_pid;
this->uid0 = this->proc->p_ucred->cr_uid;
this->gid0 = this->proc->p_ucred->cr_rgid;
this->p_args = this->proc->p_args;
this->ar_length = this->p_args ? this->p_args->ar_length : 0;
this->ar_args = (char *)(this->p_args ? this->p_args->ar_args : 0);
this->arg0_0 = this->ar_length > 0 ?
this->ar_args : stringof(this->proc->p_comm);
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg0_1 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg0_2 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg0_3 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg0_4 = this->ar_length > 0 ? "..." : "";
/******************* PPARENT *******************/
this->proc = this->proc->p_pptr;
this->pid1 = this->proc->p_pid;
this->uid1 = this->proc->p_ucred->cr_uid;
this->gid1 = this->proc->p_ucred->cr_rgid;
this->p_args = this->proc ? this->proc->p_args : 0;
this->ar_length = this->p_args ? this->p_args->ar_length : 0;
this->ar_args = (char *)(this->p_args ? this->p_args->ar_args : 0);
this->arg1_0 = this->ar_length > 0 ?
this->ar_args : stringof(this->proc->p_comm);
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg1_1 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg1_2 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg1_3 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg1_4 = this->ar_length > 0 ? "..." : "";
/******************* GPARENT *******************/
this->proc = this->proc->p_pptr;
this->pid2 = this->proc->p_pid;
this->uid2 = this->proc->p_ucred->cr_uid;
this->gid2 = this->proc->p_ucred->cr_rgid;
this->p_args = this->proc ? this->proc->p_args : 0;
this->ar_length = this->p_args ? this->p_args->ar_length : 0;
this->ar_args = (char *)(this->p_args ? this->p_args->ar_args : 0);
this->arg2_0 = this->ar_length > 0 ?
this->ar_args : stringof(this->proc->p_comm);
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg2_1 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg2_2 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg2_3 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg2_4 = this->ar_length > 0 ? "..." : "";
/******************* APARENT *******************/
this->proc = this->proc->p_pptr;
this->pid3 = this->proc->p_pid;
this->uid3 = this->proc->p_ucred->cr_uid;
this->gid3 = this->proc->p_ucred->cr_rgid;
this->p_args = this->proc ? this->proc->p_args : 0;
this->ar_length = this->p_args ? this->p_args->ar_length : 0;
this->ar_args = (char *)(this->p_args ? this->p_args->ar_args : 0);
this->arg3_0 = this->ar_length > 0 ?
this->ar_args : stringof(this->proc->p_comm);
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg3_1 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg3_2 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg3_3 = this->ar_length > 0 ? this->ar_args : "";
this->len = this->ar_length > 0 ? strlen(this->ar_args) + 1 : 0;
this->ar_args += this->len;
this->ar_length -= this->len;
this->arg3_4 = this->ar_length > 0 ? "..." : "";
/***********************************************/
/*
* Print process, parent, and grandparent details
*/
printf("%Y %s[%d]: ", timestamp + 1406598400000000000,
this->caller_execname, this->pid1);
printf("%s", this->arg0_0);
printf("%s%s", this->arg0_1 != "" ? " " : "", this->arg0_1);
printf("%s%s", this->arg0_2 != "" ? " " : "", this->arg0_2);
printf("%s%s", this->arg0_3 != "" ? " " : "", this->arg0_3);
printf("%s%s", this->arg0_4 != "" ? " " : "", this->arg0_4);
printf("\n");
printf(" -+= %05d %d.%d %s",
this->pid3, this->uid3, this->gid3, this->arg3_0);
printf("%s%s", this->arg3_1 != "" ? " " : "", this->arg3_1);
printf("%s%s", this->arg3_2 != "" ? " " : "", this->arg3_2);
printf("%s%s", this->arg3_3 != "" ? " " : "", this->arg3_3);
printf("%s%s", this->arg3_4 != "" ? " " : "", this->arg3_4);
printf("%s", this->arg3_0 != "" ? "\n" : "");
printf(" \-+= %05d %d.%d %s",
this->pid2, this->uid2, this->gid2, this->arg2_0);
printf("%s%s", this->arg2_1 != "" ? " " : "", this->arg2_1);
printf("%s%s", this->arg2_2 != "" ? " " : "", this->arg2_2);
printf("%s%s", this->arg2_3 != "" ? " " : "", this->arg2_3);
printf("%s%s", this->arg2_4 != "" ? " " : "", this->arg2_4);
printf("%s", this->arg2_0 != "" ? "\n" : "");
printf(" \-+= %05d %d.%d %s",
this->pid1, this->uid1, this->gid1, this->arg1_0);
printf("%s%s", this->arg1_1 != "" ? " " : "", this->arg1_1);
printf("%s%s", this->arg1_2 != "" ? " " : "", this->arg1_2);
printf("%s%s", this->arg1_3 != "" ? " " : "", this->arg1_3);
printf("%s%s", this->arg1_4 != "" ? " " : "", this->arg1_4);
printf("%s", this->arg1_0 != "" ? "\n" : "");
printf(" \-+= %05d %d.%d %s",
this->pid0, this->uid0, this->gid0, this->arg0_0);
printf("%s%s", this->arg0_1 != "" ? " " : "", this->arg0_1);
printf("%s%s", this->arg0_2 != "" ? " " : "", this->arg0_2);
printf("%s%s", this->arg0_3 != "" ? " " : "", this->arg0_3);
printf("%s%s", this->arg0_4 != "" ? " " : "", this->arg0_4);
printf("%s", this->arg0_0 != "" ? "\n" : "");
}
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