| kill.2 (108028) | kill.2 (108087) |
|---|---|
| 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)kill.2 8.3 (Berkeley) 4/19/94 | 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)kill.2 8.3 (Berkeley) 4/19/94 |
| 33.\" $FreeBSD: head/lib/libc/sys/kill.2 108028 2002-12-18 09:22:32Z ru $ | 33.\" $FreeBSD: head/lib/libc/sys/kill.2 108087 2002-12-19 09:40:28Z ru $ |
| 34.\" 35.Dd April 19, 1994 36.Dt KILL 2 37.Os 38.Sh NAME 39.Nm kill 40.Nd send signal to a process 41.Sh LIBRARY --- 7 unchanged lines hidden (view full) --- 49The 50.Fn kill 51system call sends the signal given by 52.Fa sig 53to 54.Fa pid , 55a 56process or a group of processes. | 34.\" 35.Dd April 19, 1994 36.Dt KILL 2 37.Os 38.Sh NAME 39.Nm kill 40.Nd send signal to a process 41.Sh LIBRARY --- 7 unchanged lines hidden (view full) --- 49The 50.Fn kill 51system call sends the signal given by 52.Fa sig 53to 54.Fa pid , 55a 56process or a group of processes. |
| 57.Fa Sig | 57The 58.Fa sig 59argument |
| 58may be one of the signals specified in 59.Xr sigaction 2 60or it may be 0, in which case 61error checking is performed but no 62signal is actually sent. 63This can be used to check the validity of 64.Fa pid . 65.Pp 66For a process to have permission to send a signal to a process designated 67by 68.Fa pid , 69the real or effective user ID of the receiving process must match 70that of the sending process or the user must have appropriate privileges 71(such as given by a set-user-ID program or the user is the super-user). 72A single exception is the signal SIGCONT, which may always be sent 73to any descendant of the current process. 74.Bl -tag -width Ds 75.It \&If Fa pid No \&is greater than zero : | 60may be one of the signals specified in 61.Xr sigaction 2 62or it may be 0, in which case 63error checking is performed but no 64signal is actually sent. 65This can be used to check the validity of 66.Fa pid . 67.Pp 68For a process to have permission to send a signal to a process designated 69by 70.Fa pid , 71the real or effective user ID of the receiving process must match 72that of the sending process or the user must have appropriate privileges 73(such as given by a set-user-ID program or the user is the super-user). 74A single exception is the signal SIGCONT, which may always be sent 75to any descendant of the current process. 76.Bl -tag -width Ds 77.It \&If Fa pid No \&is greater than zero : |
| 76.Fa Sig | 78The 79.Fa sig 80signal |
| 77is sent to the process whose ID is equal to 78.Fa pid . 79.It \&If Fa pid No \&is zero : | 81is sent to the process whose ID is equal to 82.Fa pid . 83.It \&If Fa pid No \&is zero : |
| 80.Fa Sig | 84The 85.Fa sig 86signal |
| 81is sent to all processes whose group ID is equal 82to the process group ID of the sender, and for which the 83process has permission; 84this is a variant of 85.Xr killpg 2 . 86.It \&If Fa pid No \&is -1 : 87If the user has super-user privileges, 88the signal is sent to all processes excluding --- 20 unchanged lines hidden (view full) --- 109.Rv -std kill 110.Sh ERRORS 111The 112.Fn kill 113system call 114will fail and no signal will be sent if: 115.Bl -tag -width Er 116.It Bq Er EINVAL | 87is sent to all processes whose group ID is equal 88to the process group ID of the sender, and for which the 89process has permission; 90this is a variant of 91.Xr killpg 2 . 92.It \&If Fa pid No \&is -1 : 93If the user has super-user privileges, 94the signal is sent to all processes excluding --- 20 unchanged lines hidden (view full) --- 115.Rv -std kill 116.Sh ERRORS 117The 118.Fn kill 119system call 120will fail and no signal will be sent if: 121.Bl -tag -width Er 122.It Bq Er EINVAL |
| 117.Fa Sig | 123The 124.Fa sig 125argument |
| 118is not a valid signal number. 119.It Bq Er ESRCH 120No process can be found corresponding to that specified by 121.Fa pid . 122.It Bq Er ESRCH 123The process id was given as 0 124but the sending process does not have a process group. 125.It Bq Er EPERM --- 22 unchanged lines hidden --- | 126is not a valid signal number. 127.It Bq Er ESRCH 128No process can be found corresponding to that specified by 129.Fa pid . 130.It Bq Er ESRCH 131The process id was given as 0 132but the sending process does not have a process group. 133.It Bq Er EPERM --- 22 unchanged lines hidden --- |