projects / apple / libc.git / blame
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1 | .\" Copyright (c) 2002 Apple Computer, Inc. All rights reserved. |
| 2 | .\" | |
| 3 | .\" @APPLE_LICENSE_HEADER_START@ | |
| 4 | .\" | |
| 5 | .\" The contents of this file constitute Original Code as defined in and | |
| 6 | .\" are subject to the Apple Public Source License Version 1.1 (the | |
| 7 | .\" "License"). You may not use this file except in compliance with the | |
| 8 | .\" License. Please obtain a copy of the License at | |
| 9 | .\" http://www.apple.com/publicsource and read it before using this file. | |
| 10 | .\" | |
| 11 | .\" This Original Code and all software distributed under the License are | |
| 12 | .\" distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 13 | .\" EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 14 | .\" INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 15 | .\" FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 16 | .\" License for the specific language governing rights and limitations | |
| 17 | .\" under the License. | |
| 18 | .\" | |
| 19 | .\" @APPLE_LICENSE_HEADER_END@ | |
| 20 | .\" | |
| 21 | .Dd December 20, 2003 | |
| 22 | .Dt tcgetsid 3 | |
| 23 | .Os | |
| 24 | .Sh NAME | |
| 25 | .Nm tcgetsid | |
| 26 | .Nd get the process group ID for the session leader for the controlling terminal | |
| 27 | .Sh SYNOPSIS | |
| 28 | .In termios.h | |
| 29 | .Ft pid_t | |
| 30 | .Fn tcgetsid "int fildes" | |
| 31 | .Sh DESCRIPTION | |
| 32 | The | |
| 33 | .Fn tcgetsid | |
| 34 | function obtains the process group ID of the session for which the terminal | |
| 35 | specified by | |
| 36 | .Fa fildes | |
| 37 | is the controlling terminal. | |
| 38 | .Sh RETURN VALUES | |
| 39 | Upon successful completion, | |
| 40 | .Fn tcgetsid | |
| 41 | returns the process group ID associated with the terminal. | |
| 42 | Otherwise, a value of | |
| 43 | .Po Vt pid_t Pc Ns -1 | |
| 44 | is returned and | |
| 45 | .Va errno | |
| 46 | is set to indicate the error. | |
| 47 | .Sh ERRORS | |
| 48 | The | |
| 49 | .Fn tcgetsid | |
| 50 | function will fail if: | |
| 51 | .Bl -tag -width Er | |
| 52 | .It Bq Er EACCES | |
| 53 | The | |
| 54 | .Vt fildes | |
| 55 | argument is not associated with a controlling terminal. | |
| 56 | .It Bq Er EBADF | |
| 57 | The | |
| 58 | .Vt fildes | |
| 59 | argument is not a valid file descriptor. | |
| 60 | .It Bq Er ENOTTY | |
| 61 | The file associated with | |
| 62 | .Vt fildes | |
| 63 | is not a terminal. | |
| 64 | .El | |
| 65 | .Sh SEE ALSO | |
| 66 | .Xr getsid 2 , | |
| 67 | .Xr setpgid 2 , | |
| 68 | .Xr setsid 2 , | |
| 69 | .Xr tcgetpgrp 3 , | |
| 70 | .Xr termios 4 | |
| 71 | .Sh STANDARDS | |
| 72 | The | |
| 73 | .Fn tcgetsid | |
| 74 | function conforms to | |
| 75 | .St -p1003.1-2001 . |