memorylost731/linux_man_pages_library · Datasets at Hugging Face

text stringlengths 0 234
.br sin (3),
.br tan (3)
.sh colophon
this page is part of release 5.13 of the linux
.i man-pages
project.
a description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
\%https://www.kernel.org/doc/man\-pages/.

.so man3/tailq.3

.\" copyright (c) 1983, 1991 the regents of the university of california.
.\" and copyright (c) 2009, 2010, 2014, 2015, michael kerrisk <[email protected]>
.\" all rights reserved.
.\"
.\" %%%license_start(bsd_4_clause_ucb)
.\" 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.
.\" %%%license_end
.\"
.\" @(#)setregid.2 6.4 (berkeley) 3/10/91
.\"
.\" modified sat jul 24 09:08:49 1993 by rik faith <[email protected]>
.\" portions extracted from linux/kernel/sys.c:
.\" copyright (c) 1991, 1992 linus torvalds
.\" may be distributed under the gnu general public license
.\" changes: 1994-07-29 by wilf <[email protected]>
.\" 1994-08-02 by wilf due to change in kernel.
.\" 2004-07-04 by aeb
.\" 2004-05-27 by michael kerrisk
.\"
.th setreuid 2 2021-03-22 "linux" "linux programmer's manual"
.sh name
setreuid, setregid \- set real and/or effective user or group id
.sh synopsis
.nf
.b #include <unistd.h>
.pp
.bi "int setreuid(uid_t " ruid ", uid_t " euid );
.bi "int setregid(gid_t " rgid ", gid_t " egid );
.fi
.pp
.rs -4
feature test macro requirements for glibc (see
.br feature_test_macros (7)):
.re
.pp
.br setreuid (),
.br setregid ():
.nf
_xopen_source >= 500
.\" \|\| _xopen_source && _xopen_source_extended
\|\| /* since glibc 2.19: */ _default_source
\|\| /* glibc <= 2.19: */ _bsd_source
.fi
.sh description
.br setreuid ()
sets real and effective user ids of the calling process.
.pp
supplying a value of \-1 for either the real or effective user id forces
the system to leave that id unchanged.
.pp
unprivileged processes may only set the effective user id to the real user id,
the effective user id, or the saved set-user-id.
.pp
unprivileged users may only set the real user id to
the real user id or the effective user id.
.pp
if the real user id is set (i.e.,
.i ruid
is not \-1) or the effective user id is set to a value
not equal to the previous real user id,

.br sin (3),

.br tan (3)

.sh colophon

this page is part of release 5.13 of the linux

.i man-pages

project.

a description of the project,

information about reporting bugs,

and the latest version of this page,

can be found at

\%https://www.kernel.org/doc/man\-pages/.

.so man3/tailq.3

.\"

.\" %%%license_start(bsd_4_clause_ucb)

.\" 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.

.\" %%%license_end

.\"

.\" @(#)setregid.2 6.4 (berkeley) 3/10/91

.\"

.\" modified sat jul 24 09:08:49 1993 by rik faith <[email protected]>

.\" portions extracted from linux/kernel/sys.c:

.\" may be distributed under the gnu general public license

.\" changes: 1994-07-29 by wilf <[email protected]>

.\" 1994-08-02 by wilf due to change in kernel.

.\" 2004-07-04 by aeb

.\" 2004-05-27 by michael kerrisk

.\"

.th setreuid 2 2021-03-22 "linux" "linux programmer's manual"

.sh name

setreuid, setregid \- set real and/or effective user or group id

.sh synopsis

.nf

.b #include <unistd.h>

.pp

.bi "int setreuid(uid_t " ruid ", uid_t " euid );

.bi "int setregid(gid_t " rgid ", gid_t " egid );

.fi

.pp

.rs -4

feature test macro requirements for glibc (see

.br feature_test_macros (7)):

.re

.pp

.br setreuid (),

.br setregid ():

.nf

_xopen_source >= 500

.\" || _xopen_source && _xopen_source_extended

|| /* since glibc 2.19: */ _default_source

|| /* glibc <= 2.19: */ _bsd_source

.fi

.sh description

.br setreuid ()

sets real and effective user ids of the calling process.

.pp

supplying a value of \-1 for either the real or effective user id forces

the system to leave that id unchanged.

.pp

unprivileged processes may only set the effective user id to the real user id,

the effective user id, or the saved set-user-id.

.pp

unprivileged users may only set the real user id to

the real user id or the effective user id.

.pp

if the real user id is set (i.e.,

.i ruid

is not \-1) or the effective user id is set to a value

not equal to the previous real user id,