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freebsd-skq/usr.bin/truss/truss.1

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Add $FreeBSD$ lines to man pages that are missing them to make it easier for translation teams. PR: docs/13418 Submitted by: Alexey Zelkin <phantom@cris.net>
1999-08-28 23:23:38 +00:00
.\" $FreeBSD$
.\"
Add support for displaying thread IDs to truss(1). - Consolidate duplicate code for printing the metadata at the start of each line into a shared function. - Add an -H option which will log the thread ID of the relevant thread for each event. While here, remove some extraneous calls to clock_gettime() in print_syscall() and print_syscall_ret(). The caller of print_syscall_ret() always updates the current thread's "after" time before it is called. Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D5363
2016-02-23 19:56:29 +00:00
.Dd February 23, 2016
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Dt TRUSS 1
mdoc(7) police: removed HISTORY info from the .Os call.
2001-07-10 14:16:33 +00:00
.Os
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Sh NAME
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Nm truss
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Nd trace system calls
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Sh SYNOPSIS
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Add support for displaying thread IDs to truss(1). - Consolidate duplicate code for printing the metadata at the start of each line into a shared function. - Add an -H option which will log the thread ID of the relevant thread for each event. While here, remove some extraneous calls to clock_gettime() in print_syscall() and print_syscall_ret(). The caller of print_syscall_ret() always updates the current thread's "after" time before it is called. Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D5363
2016-02-23 19:56:29 +00:00
.Op Fl facedDHS
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Op Fl o Ar file
Add a -s flag for the same functionality as strace. Introduce a Name type which is a String type that has no -s limitations applied to it. Change most Strings in the code to Names and add a few extra syscalls, namely munmap, read, rename and symlink. This was enough to facilitate following file descriptor allocations in the code more easily and getting a hint at what's being read/written from/to files. More syscalls should really be added. While here, fix an off-by-one bug in the buffer truncation code and add a fflush so that truss's output reflects the syscall that the program is stuck in. Sponsored by: Sophos/Activestate MFC after: 2 weeks
2006-01-02 08:36:25 +00:00
.Op Fl s Ar strsize
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Fl p Ar pid
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Add support for displaying thread IDs to truss(1). - Consolidate duplicate code for printing the metadata at the start of each line into a shared function. - Add an -H option which will log the thread ID of the relevant thread for each event. While here, remove some extraneous calls to clock_gettime() in print_syscall() and print_syscall_ret(). The caller of print_syscall_ret() always updates the current thread's "after" time before it is called. Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D5363
2016-02-23 19:56:29 +00:00
.Op Fl facedDHS
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Op Fl o Ar file
Add a -s flag for the same functionality as strace. Introduce a Name type which is a String type that has no -s limitations applied to it. Change most Strings in the code to Names and add a few extra syscalls, namely munmap, read, rename and symlink. This was enough to facilitate following file descriptor allocations in the code more easily and getting a hint at what's being read/written from/to files. More syscalls should really be added. While here, fix an off-by-one bug in the buffer truncation code and add a fflush so that truss's output reflects the syscall that the program is stuck in. Sponsored by: Sophos/Activestate MFC after: 2 weeks
2006-01-02 08:36:25 +00:00
.Op Fl s Ar strsize
Add missing markup bits.
2006-12-11 11:34:44 +00:00
.Ar command Op Ar args
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Sh DESCRIPTION
Use `The .Nm utility'
2002-04-20 12:18:28 +00:00
The
.Nm
utility traces the system calls called by the specified process or program.
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
Output is to the specified output file, or standard error by default.
It does this by stopping and restarting the process being monitored via
Make use of ptrace(2) instead of procfs in truss(1), eliminating yet another need of an available /proc/ mount. Tested with: make universe Submitted by: howardsu Reviewed by: alfred
2007-04-10 04:03:34 +00:00
.Xr ptrace 2 .
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Pp
The options are as follows:
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Bl -tag -width indent
Allow tracking fork()ed children. PR: bin/25587 (in part) MFC after: 3 weeks
2002-08-04 01:02:52 +00:00
.It Fl f
Fix all the spelling mistakes I could find in the man pages for words that have at least 3 characters. MFC after: 1 week Thanks to: Music band ``Chingon'' for keeping me company while searching for these.
2005-07-31 03:30:48 +00:00
Trace descendants of the original traced process created by
mdoc(7) police: markup polishing. Approved by: re
2002-11-26 17:33:37 +00:00
.Xr fork 2 ,
.Xr vfork 2 ,
etc.
Add support for displaying thread IDs to truss(1). - Consolidate duplicate code for printing the metadata at the start of each line into a shared function. - Add an -H option which will log the thread ID of the relevant thread for each event. While here, remove some extraneous calls to clock_gettime() in print_syscall() and print_syscall_ret(). The caller of print_syscall_ret() always updates the current thread's "after" time before it is called. Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D5363
2016-02-23 19:56:29 +00:00
To distinguish events between processes,
the process ID
.Pq PID
of the process is included in the output of each event.
Add options to print the argument and environment string parameters to execve(). This could be done in a more general manner but it still wouldn't be very pretty. MFC after: 3 weeks
2002-08-04 02:24:21 +00:00
.It Fl a
mdoc(7) police: markup polishing. Approved by: re
2002-11-26 17:33:37 +00:00
Show the argument strings that are passed in each
.Xr execve 2
system call.
Add -c option to summarize number of calls, errors, and system time. Reviewed by: alfred
2009-05-12 20:42:12 +00:00
.It Fl c
Let -c imply -S (hide signal output). Without this, the signals are shown seemingly randomly in the output before the final summary is shown. This is especially noticeable when there is not much output from the application being traced. Discussed with: jhb Relnotes: yes
2015-10-09 20:47:29 +00:00
Do not display individual system calls or signals.
Add -c option to summarize number of calls, errors, and system time. Reviewed by: alfred
2009-05-12 20:42:12 +00:00
Instead, before exiting, print a summary containing for each system call:
the total system time used,
the number of times the call was invoked,
and the number of times the call returned with an error.
Add options to print the argument and environment string parameters to execve(). This could be done in a more general manner but it still wouldn't be very pretty. MFC after: 3 weeks
2002-08-04 02:24:21 +00:00
.It Fl e
mdoc(7) police: markup polishing. Approved by: re
2002-11-26 17:33:37 +00:00
Show the environment strings that are passed in each
.Xr execve 2
system call.
Add options to print absolute and relative timestamps. PR: bin/25587 (in part) MFC after: 3 weeks
2002-08-04 01:27:31 +00:00
.It Fl d
Include timestamps in the output showing the time elapsed
since the trace was started.
.It Fl D
Include timestamps in the output showing the time elapsed
since the last recorded event.
Add support for displaying thread IDs to truss(1). - Consolidate duplicate code for printing the metadata at the start of each line into a shared function. - Add an -H option which will log the thread ID of the relevant thread for each event. While here, remove some extraneous calls to clock_gettime() in print_syscall() and print_syscall_ret(). The caller of print_syscall_ret() always updates the current thread's "after" time before it is called. Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D5363
2016-02-23 19:56:29 +00:00
.It Fl H
Include the thread ID of in the output of each event.
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.It Fl S
Do not display information about signals received by the process.
(Normally,
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Nm
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
displays signal as well as system call events.)
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.It Fl o Ar file
Print the output to the specified
.Ar file
instead of standard error.
Add a -s flag for the same functionality as strace. Introduce a Name type which is a String type that has no -s limitations applied to it. Change most Strings in the code to Names and add a few extra syscalls, namely munmap, read, rename and symlink. This was enough to facilitate following file descriptor allocations in the code more easily and getting a hint at what's being read/written from/to files. More syscalls should really be added. While here, fix an off-by-one bug in the buffer truncation code and add a fflush so that truss's output reflects the syscall that the program is stuck in. Sponsored by: Sophos/Activestate MFC after: 2 weeks
2006-01-02 08:36:25 +00:00
.It Fl s Ar strsize
Display strings using at most
.Ar strsize
characters.
If the buffer is larger,
Markup fixes.
2006-09-29 15:20:48 +00:00
.Dq Li ...
Add a -s flag for the same functionality as strace. Introduce a Name type which is a String type that has no -s limitations applied to it. Change most Strings in the code to Names and add a few extra syscalls, namely munmap, read, rename and symlink. This was enough to facilitate following file descriptor allocations in the code more easily and getting a hint at what's being read/written from/to files. More syscalls should really be added. While here, fix an off-by-one bug in the buffer truncation code and add a fflush so that truss's output reflects the syscall that the program is stuck in. Sponsored by: Sophos/Activestate MFC after: 2 weeks
2006-01-02 08:36:25 +00:00
will be displayed at the end of the string.
The default
.Ar strsize
is 32.
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.It Fl p Ar pid
Remove whitespace at EOL.
2001-07-15 08:06:20 +00:00
Follow the process specified by
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Ar pid
instead of a new command.
Add missing markup bits.
2006-12-11 11:34:44 +00:00
.It Ar command Op Ar args
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
Execute
.Ar command
and trace the system calls of it.
(The
.Fl p
and
.Ar command
options are mutually exclusive.)
Prepare for mdoc(7)NG.
2000-12-19 16:00:12 +00:00
.El
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Sh EXAMPLES
# Follow the system calls used in echoing "hello"
.Dl $ truss /bin/echo hello
# Do the same, but put the output into a file
.Dl $ truss -o /tmp/truss.out /bin/echo hello
# Follow an already-running process
Attaching to the init process returns EINVAL, so give an example that is more likely to work. Stolen from the ktrace(1) manual page. PR: 128222 Submitted by: Mateusz Guzik <mjguzik@gmail.com>
2009-01-23 00:58:14 +00:00
.Dl $ truss -p 34
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Sh SEE ALSO
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Xr kdump 1 ,
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Xr ktrace 1 ,
truss: Add support for utrace(2). This uses the kdump(1) utrace support code directly until a common library is created. This allows malloc(3) tracing with MALLOC_CONF=utrace:true and rtld tracing with LD_UTRACE=1. Unknown utrace(2) data is just printed as hex. PR: 43819 [inspired by] Reviewed by: jhb MFC after: 2 weeks Relnotes: yes Differential Revision: https://reviews.freebsd.org/D3819
2015-10-06 21:58:38 +00:00
.Xr ptrace 2 ,
.Xr utrace 2
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
.Sh HISTORY
The
Sort Xrefs. Use err(3). Remove uneeded #include. Correct usage: one of {-p pid, command} is required. Open output file when command line is fully analyzed: incorrect `truss -o f' command does not create an empty file anymore.
1998-01-05 07:30:26 +00:00
.Nm
command was written by
.An Sean Eric Fagan
for
Fxi various man pages to stop abusing the .Bx macro to generate the string "FreeBSD". Use the .Fx macro instead. Also did some minor re-wording/formatting to work around a deficiency with the .Fx macro when it comes to puncuation characters other than periods and commas.
2000-01-23 01:48:16 +00:00
.Fx .
It was modeled after
Truss program. Requires procfs.
1997-12-06 05:23:12 +00:00
similar commands available for System V Release 4 and SunOS.
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