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freebsd/lib/libc/sys/issetugid.2

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Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.\" $OpenBSD: issetugid.2,v 1.7 1997/02/18 00:16:09 deraadt Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
.\"
$Id$ -> $FreeBSD$
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.\"
mdoc(7) police: use canonical form of .Dd macro.
2000-12-11 15:15:20 +00:00
.Dd August 25, 1996
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Dt ISSETUGID 2
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Os
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Sh NAME
.Nm issetugid
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Nd is current process tainted by uid or gid changes
Introduce ".Lb" macro to libc manpages. More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
.Sh LIBRARY
.Lb libc
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Sh SYNOPSIS
mdoc(7) police: Use the new .In macro for #include statements.
2001-10-01 16:09:29 +00:00
.In unistd.h
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Ft int
.Fn issetugid void
.Sh DESCRIPTION
The
.Fn issetugid
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe.
2002-12-18 09:22:32 +00:00
system call returns 1 if the process environment or memory address space
Some style and "look" fixes Reviewed by: mpp
1999-09-05 07:02:22 +00:00
is considered
.Dq tainted ,
and returns 0 otherwise.
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Pp
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
A process is tainted if it was created as a result of an
.Xr execve 2
system call which had either of the setuid or setgid bits set (and extra
Grammar police: "its", not "it's", is the possessive form of "it".
2001-04-15 19:53:47 +00:00
privileges were given as a result) or if it has changed any of its real,
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
effective or saved user or group ID's since it began execution.
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Pp
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
This system call exists so that library routines (eg: libc, libtermcap)
can reliably determine if it is safe to use information
that was obtained from the user, in particular the results from
.Xr getenv 3
should be viewed with suspicion if it is used to control operation.
.Pp
Some style and "look" fixes Reviewed by: mpp
1999-09-05 07:02:22 +00:00
A
.Dq tainted
status is inherited by child processes as a result of the
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Xr fork 2
system call (or other library code that calls fork, such as
Fix one very minor mdoc problem. Gentle enough, Peter? :-)
1997-04-01 18:45:57 +00:00
.Xr popen 3 ) .
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Pp
It is assumed that a program that clears all privileges as it prepares
Some style and "look" fixes Reviewed by: mpp
1999-09-05 07:02:22 +00:00
to execute another will also reset the environment, hence the
.Dq tainted
Mechanically kill hard sentence breaks.
2004-07-02 23:52:20 +00:00
status will not be passed on.
This is important for programs such as
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Xr su 1
which begin setuid but need to be able to create an untainted process.
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Sh ERRORS
The
.Fn issetugid
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe.
2002-12-18 09:22:32 +00:00
system call is always successful, and no return value is reserved to
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
indicate an error.
.Sh SEE ALSO
.Xr execve 2 ,
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Xr fork 2 ,
.Xr setegid 2 ,
.Xr seteuid 2 ,
Sort cross refereces in section SEE ALSO.
1997-09-29 19:11:55 +00:00
.Xr setgid 2 ,
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Xr setregid 2 ,
Don't xref setregid(2) twice - one of them should be setreuid(2).
1997-04-01 18:50:56 +00:00
.Xr setreuid 2 ,
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Xr setuid 2
Steal issetugid man page from OpenBSD. Needs work.. Obtained from: OpenBSD
1997-03-31 15:59:14 +00:00
.Sh HISTORY
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe.
2002-12-18 09:22:32 +00:00
The
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Fn issetugid
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe.
2002-12-18 09:22:32 +00:00
system call first appeared in
General cleanup and update to specify exactly how our implementation passes on the status across fork/exec. The previous version had some typos, referred to itself as link(2) in one place :-), and didn't really match openbsd's implementation either. Now that I've mentioned typos, hopefully our Typo Police and Xref Police will be gentle with me. :-)
1997-03-31 16:36:14 +00:00
.Ox 2.0
and was also implemented in
.Fx 3.0 .
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