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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 05:00:24 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 05:00:24 +0000 |
commit | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (patch) | |
tree | a18a706dffa5baf86a3b12bbfb4f81caa097f349 /lib/libc/sys/setsid.2 | |
parent | 2a27bd86e6002c871e3b5561a5334653bb222a77 (diff) | |
download | FreeBSD-src-be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da.zip FreeBSD-src-be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da.tar.gz |
BSD 4.4 Lite Lib Sources
Diffstat (limited to 'lib/libc/sys/setsid.2')
-rw-r--r-- | lib/libc/sys/setsid.2 | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/libc/sys/setsid.2 b/lib/libc/sys/setsid.2 new file mode 100644 index 0000000..48ac6a0 --- /dev/null +++ b/lib/libc/sys/setsid.2 @@ -0,0 +1,79 @@ +.\" Copyright (c) 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. +.\" +.\" @(#)setsid.2 8.1 (Berkeley) 6/4/93 +.\" +.Dd "June 4, 1993" +.Dt SETSID 2 +.Os +.Sh NAME +.Nm setsid +.Nd create session and set process group ID +.Sh SYNOPSIS +.Fd #include <sys/types.h> +.Ft pid_t +.Fn setsid "void" +.Sh DESCRIPTION +The +.Nm setsid +function creates a new session. +The calling process is the session leader of the new session, is the +process group leader of a new process group and has no controlling +terminal. +The calling process is the only process in either the session or the +process group. +.Pp +Upon successful completion, the +.Nm setsid +function returns the value of the process group ID of the new process +group, which is the same as the process ID of the calling process. +.Sh ERRORS +If an error occurs, +.Nm setsid +returns -1 and the global variable +.Va errno +is set to indicate the error, as follows: +.Bl -tag -width Er +.It Bq Er EPERM +The calling process is already a process group leader, or the process +group ID of a process other than the calling process matches the process +ID of the calling process. +.El +.Sh SEE ALSO +.Xr setpgid 3 , +.Xr tcgetpgrp 3 , +.Xr tcsetpgrp 3 +.Sh STANDARDS +The +.Nm setsid +function is expected to be compliant with the +.St -p1003.1-88 +specification. |