projects / unix-history / blame
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1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement | |
| 3 | .\" specifies the terms and conditions for redistribution. | |
| 4 | .\" | |
| c7a602c7 | 5 | .\" @(#)killpg.2 6.1 (Berkeley) %G% |
| a4eea337 | 6 | .\" |
| c7a602c7 | 7 | .TH KILLPG 2 "" |
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8 | .UC 4 |
| 9 | .SH NAME | |
| 040e2838 | 10 | killpg \- send signal to a process group |
| a4eea337 | 11 | .SH SYNOPSIS |
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12 | .ft B |
| 13 | killpg(pgrp, sig) | |
| 14 | .br | |
| 15 | int pgrp, sig; | |
| 16 | .ft R | |
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17 | .SH DESCRIPTION |
| 18 | .I Killpg | |
| 19 | sends the signal | |
| 20 | .I sig | |
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21 | to the process group |
| 22 | .IR pgrp . | |
| a4eea337 | 23 | See |
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24 | .IR sigvec (2) |
| 25 | for a list of signals. | |
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26 | .PP |
| 27 | The sending process and members of the process group must | |
| 28 | have the same effective user ID, otherwise | |
| 29 | this call is restricted to the super-user. | |
| 30 | As a single special case the continue signal SIGCONT may be sent | |
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31 | to any process which is a descendant of the current process. |
| 32 | .SH "RETURN VALUE | |
| 33 | Upon successful completion, a value of 0 is returned. Otherwise, | |
| 34 | a value of \-1 is returned and the global variable \fIerrno\fP | |
| 35 | is set to indicate the error. | |
| 36 | .SH "ERRORS | |
| 37 | \fIKillpg\fP will fail and no signal will be sent if any of the | |
| 38 | following occur: | |
| 39 | .TP 15 | |
| 40 | [EINVAL] | |
| 41 | \fISig\fP is not a valid signal number. | |
| 42 | .TP 15 | |
| 43 | [ESRCH] | |
| 44 | No process can be found corresponding to that specified by \fIpid\fP. | |
| 45 | .TP 15 | |
| 46 | [EPERM] | |
| 47 | The sending process is not the super-user and one or more | |
| 48 | of the target processes has an effective user ID different from that | |
| 49 | of the sending process. | |
| a4eea337 | 50 | .SH "SEE ALSO" |
| 040e2838 | 51 | kill(2), getpgrp(2), sigvec(2) |