| semctl.2 (108028) | semctl.2 (108087) |
|---|---|
| 1.\" 2.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com> 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: --- 9 unchanged lines hidden (view full) --- 18.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" | 1.\" 2.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com> 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: --- 9 unchanged lines hidden (view full) --- 18.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" |
| 26.\" $FreeBSD: head/lib/libc/sys/semctl.2 108028 2002-12-18 09:22:32Z ru $ | 26.\" $FreeBSD: head/lib/libc/sys/semctl.2 108087 2002-12-19 09:40:28Z ru $ |
| 27.\" 28.Dd September 12, 1995 29.Dt SEMCTL 2 30.Os 31.Sh NAME 32.Nm semctl 33.Nd control operations on a semaphore set 34.Sh LIBRARY --- 13 unchanged lines hidden (view full) --- 48on the semaphore set indicated by 49.Fa semid . 50A fourth argument, a 51.Fa "union semun arg" , 52is required for certain values of 53.Fa cmd . 54For the commands that use the 55.Fa arg | 27.\" 28.Dd September 12, 1995 29.Dt SEMCTL 2 30.Os 31.Sh NAME 32.Nm semctl 33.Nd control operations on a semaphore set 34.Sh LIBRARY --- 13 unchanged lines hidden (view full) --- 48on the semaphore set indicated by 49.Fa semid . 50A fourth argument, a 51.Fa "union semun arg" , 52is required for certain values of 53.Fa cmd . 54For the commands that use the 55.Fa arg |
| 56parameter, | 56argument, |
| 57.Fa "union semun" 58is defined as follows: 59.Bd -literal 60.\" 61.\" From <sys/sem.h>: 62.\" 63union semun { 64 int val; /* value for SETVAL */ --- 66 unchanged lines hidden (view full) --- 131Set the values of all of the semaphores in the set to the values 132in the array pointed to by 133.Fa arg.array . 134Outstanding adjust on exit values for all semaphores in this set, 135in any process are cleared. 136.El 137.Pp 138The | 57.Fa "union semun" 58is defined as follows: 59.Bd -literal 60.\" 61.\" From <sys/sem.h>: 62.\" 63union semun { 64 int val; /* value for SETVAL */ --- 66 unchanged lines hidden (view full) --- 131Set the values of all of the semaphores in the set to the values 132in the array pointed to by 133.Fa arg.array . 134Outstanding adjust on exit values for all semaphores in this set, 135in any process are cleared. 136.El 137.Pp 138The |
| 139.Fa "struct semid_ds" | 139.Vt "struct semid_ds" |
| 140is defined as follows: 141.Bd -literal 142.\" 143.\" Taken straight from <sys/sem.h>. 144.\" 145struct semid_ds { 146 struct ipc_perm sem_perm; /* operation permission struct */ 147 struct sem *sem_base; /* pointer to first semaphore in set */ --- 24 unchanged lines hidden (view full) --- 172.Fn semctl 173system call 174will fail if: 175.Bl -tag -width Er 176.It Bq Er EINVAL 177No semaphore set corresponds to 178.Fa semid . 179.It Bq Er EINVAL | 140is defined as follows: 141.Bd -literal 142.\" 143.\" Taken straight from <sys/sem.h>. 144.\" 145struct semid_ds { 146 struct ipc_perm sem_perm; /* operation permission struct */ 147 struct sem *sem_base; /* pointer to first semaphore in set */ --- 24 unchanged lines hidden (view full) --- 172.Fn semctl 173system call 174will fail if: 175.Bl -tag -width Er 176.It Bq Er EINVAL 177No semaphore set corresponds to 178.Fa semid . 179.It Bq Er EINVAL |
| 180The |
|
| 180.Fa semnum | 181.Fa semnum |
| 182argument |
|
| 181is not in the range of valid semaphores for given semaphore set. 182.It Bq Er EPERM 183The calling process's effective uid does not match the uid of 184the semaphore set's owner or creator. 185.It Bq Er EACCES 186Permission denied due to mismatch between operation and mode of 187semaphore set. 188.It Bq Er ERANGE --- 12 unchanged lines hidden --- | 183is not in the range of valid semaphores for given semaphore set. 184.It Bq Er EPERM 185The calling process's effective uid does not match the uid of 186the semaphore set's owner or creator. 187.It Bq Er EACCES 188Permission denied due to mismatch between operation and mode of 189semaphore set. 190.It Bq Er ERANGE --- 12 unchanged lines hidden --- |