xref: /illumos-gate/usr/src/man/man3proc/pr_ioctl.3proc (revision a7d7cafedfa26f9e421bbcaf42b7387ef67c0a31)
143051d27SRobert Mustacchi.\"
243051d27SRobert Mustacchi.\" This file and its contents are supplied under the terms of the
343051d27SRobert Mustacchi.\" Common Development and Distribution License ("CDDL"), version 1.0.
443051d27SRobert Mustacchi.\" You may only use this file in accordance with the terms of version
543051d27SRobert Mustacchi.\" 1.0 of the CDDL.
643051d27SRobert Mustacchi.\"
743051d27SRobert Mustacchi.\" A full copy of the text of the CDDL should have accompanied this
843051d27SRobert Mustacchi.\" source.  A copy of the CDDL is also available via the Internet at
943051d27SRobert Mustacchi.\" http://www.illumos.org/license/CDDL.
1043051d27SRobert Mustacchi.\"
1143051d27SRobert Mustacchi.\"
1243051d27SRobert Mustacchi.\" Copyright 2015 Joyent, Inc.
1343051d27SRobert Mustacchi.\"
14*a7d7cafeSRobert Mustacchi.Dd November 27, 2023
1543051d27SRobert Mustacchi.Dt PR_IOCTL 3PROC
1643051d27SRobert Mustacchi.Os
1743051d27SRobert Mustacchi.Sh NAME
1843051d27SRobert Mustacchi.Nm pr_ioctl
1943051d27SRobert Mustacchi.Nd inject ioctl system call into victim process
20*a7d7cafeSRobert Mustacchi.Sh LIBRARY
2143051d27SRobert Mustacchi.Lb libproc
22*a7d7cafeSRobert Mustacchi.Sh SYNOPSIS
2343051d27SRobert Mustacchi.In libproc.h
2443051d27SRobert Mustacchi.Ft int
2543051d27SRobert Mustacchi.Fo pr_ioctl
2643051d27SRobert Mustacchi.Fa "struct ps_prochandle *P"
2743051d27SRobert Mustacchi.Fa "int fd"
2843051d27SRobert Mustacchi.Fa "int code"
2943051d27SRobert Mustacchi.Fa "void *buf"
3043051d27SRobert Mustacchi.Fa "size_t size"
3143051d27SRobert Mustacchi.Fc
3243051d27SRobert Mustacchi.Sh DESCRIPTION
3343051d27SRobert MustacchiThe
3443051d27SRobert Mustacchi.Fn pr_ioctl
3543051d27SRobert Mustacchifunction injects the
3643051d27SRobert Mustacchi.Xr ioctl 2
3743051d27SRobert Mustacchisystem call into the target process
3843051d27SRobert Mustacchi.Fa P
3943051d27SRobert Mustacchiby means of the agent LWP.
4043051d27SRobert MustacchiIf the process handle
4143051d27SRobert Mustacchi.Fa P
4243051d27SRobert Mustacchiis the value
4343051d27SRobert Mustacchi.Dv NULL
4443051d27SRobert Mustacchithen this will be equivalent to calling
4543051d27SRobert Mustacchi.Xr ioctl 2
4643051d27SRobert Mustacchion the currently running process.
4743051d27SRobert Mustacchi.Pp
4843051d27SRobert MustacchiThe arguments
4943051d27SRobert Mustacchi.Fa fd ,
5043051d27SRobert Mustacchi.Fa code ,
5143051d27SRobert Mustacchiand
5243051d27SRobert Mustacchi.Fa buf
5343051d27SRobert Mustacchihave the same meaning as in
5443051d27SRobert Mustacchi.Xr ioctl 2 .
5543051d27SRobert MustacchiSee
5643051d27SRobert Mustacchi.Xr ioctl 2
5743051d27SRobert Mustacchifor the full description and purpose of the
5843051d27SRobert Mustacchi.Sy ioctl
5943051d27SRobert Mustacchisystem call and its arguments.
6043051d27SRobert Mustacchi.Pp
6143051d27SRobert MustacchiUnlike the traditional
6243051d27SRobert Mustacchi.Xr ioctl 2
6343051d27SRobert Mustacchisystem call, the
6443051d27SRobert Mustacchi.Fn pr_ioctl
6543051d27SRobert Mustacchifunction needs to know the maximum size of the buffer
6643051d27SRobert Mustacchi.Fa buf
6743051d27SRobert Mustacchisuch that it can be properly injected into the address space of the
6843051d27SRobert Mustacchitarget process.
6943051d27SRobert Mustacchi.Pp
7043051d27SRobert MustacchiThe
7143051d27SRobert Mustacchi.Fn pr_ioctl
7272d3dbb9SYuri Pankovfunction only works on active processes.
7372d3dbb9SYuri PankovProcess handles that correspond to core files, zombie processes, or ELF objects
7472d3dbb9SYuri Pankovdo not support system call injection.
7543051d27SRobert Mustacchi.Sh RETURN VALUES
7643051d27SRobert MustacchiUpon successful completion, the
7743051d27SRobert Mustacchi.Fn pr_ioctl
7843051d27SRobert Mustacchifunction's return value is that described in
7943051d27SRobert Mustacchi.Xr ioctl 2 .
8043051d27SRobert MustacchiOtherwise,
8143051d27SRobert Mustacchi.Sy -1
8243051d27SRobert Mustacchiis returned and
8343051d27SRobert Mustacchi.Sy errno
8443051d27SRobert Mustacchiis set to
8543051d27SRobert Mustacchi.Er ENOSYS
8643051d27SRobert Mustacchito indicate that the system call could not be injected.
8743051d27SRobert Mustacchi.Sh ERRORS
8843051d27SRobert MustacchiFor the full list of errors see the
8943051d27SRobert Mustacchi.Sy ERRORS
9043051d27SRobert Mustacchisection in
9143051d27SRobert Mustacchi.Xr ioctl 2 .
9243051d27SRobert Mustacchi.Pp
9343051d27SRobert MustacchiThe
9443051d27SRobert Mustacchi.Fn pr_ioctl
9543051d27SRobert Mustacchifunction will fail if:
9643051d27SRobert Mustacchi.Bl -tag -width Er
9743051d27SRobert Mustacchi.It Er ENOSYS
9843051d27SRobert MustacchiAn error occurred while trying to invoke the agent LWP and inject a
9943051d27SRobert Mustacchisystem call in the process handle
10043051d27SRobert Mustacchi.Fa P
10143051d27SRobert Mustacchior the process handle
10243051d27SRobert Mustacchi.Fa P
10343051d27SRobert Mustacchidoes not support system call injection.
10443051d27SRobert Mustacchi.El
10543051d27SRobert Mustacchi.Sh INTERFACE STABILITY
10643051d27SRobert Mustacchi.Sy Uncommitted
10743051d27SRobert Mustacchi.Sh MT-LEVEL
10843051d27SRobert MustacchiSee
10943051d27SRobert Mustacchi.Sy LOCKING
11043051d27SRobert Mustacchiin
11143051d27SRobert Mustacchi.Xr libproc 3LIB .
11243051d27SRobert Mustacchi.Sh SEE ALSO
11343051d27SRobert Mustacchi.Xr ioctl 2 ,
11443051d27SRobert Mustacchi.Xr libproc 3LIB ,
115bbf21555SRichard Lowe.Xr proc 5
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