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Diffstat (limited to 'lib/libc/sys/setsid.2')
| -rw-r--r-- | lib/libc/sys/setsid.2 | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/lib/libc/sys/setsid.2 b/lib/libc/sys/setsid.2 new file mode 100644 index 000000000000..b4ff4db9a961 --- /dev/null +++ b/lib/libc/sys/setsid.2 @@ -0,0 +1,67 @@ +.\" Copyright (c) 1994 Christoph M. Robitschko +.\" 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 Christoph M. Robitschko +.\" 4. The name of the author may not be used to endorse or promote products +.\" derived from this software withough specific prior written permission +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. +.Dd January 28, 1994 +.Dt SETSID 2 +.Os FreeBSD +.Sh NAME +.Nm setsid +.Nd create session and set process group ID +.Sh SYNOPSIS +.Fd #include <sys/types.h> +.Ft pid_t +.Fn setsid +.Sh DESCRIPTION +If the calling process is not a process group leader, the +.Fn setsid +function creates a new session and a new process group. +The calling process is the session leader and process group leader, and +has no controlling terminal. +The ID of the process group is set to the process ID of the calling process. +The calling process is the only member of the new session and of the new +process group. +.Sh RETURN VALUES +.Fn Setsid +returns the value of the new process group ID when the operation was successful. +If the request failed, -1 is returned and the global variable +.Va errno +indicates the reason. +.Sh ERRORS +.Fn Setsid +will fail if: +.Bl -tag -width indent +.It Bq Er EPERM +The calling process is already a process group leader, or the process group ID +of another process matches the process ID of the calling process. +.El +.Sh SEE ALSO +.Xr getpid 2 , +.Xr setpgid 2 +.Sh STANDARDS +.Fn Setpgid +conforms to IEEE Std 1003.1-1988 +.Pq Dq Tn POSIX . |