X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..04b8595b18b1b41ac7a206e4b3d51a635f8413d7:/bsd/man/man2/semop.2 diff --git a/bsd/man/man2/semop.2 b/bsd/man/man2/semop.2 index 82701cd74..8009d1659 100644 --- a/bsd/man/man2/semop.2 +++ b/bsd/man/man2/semop.2 @@ -32,23 +32,25 @@ .Nm semop .Nd atomic array of operations on a semaphore set .Sh SYNOPSIS -.In sys/types.h -.In sys/ipc.h .In sys/sem.h .Ft int -.Fn semop "int semid" "struct sembuf *array" "size_t nops" +.Fo semop +.Fa "int semid" +.Fa "struct sembuf *sops" +.Fa "size_t nsops" +.Fc .Sh DESCRIPTION The .Fn semop system call atomically performs the array of operations indicated by -.Fa array +.Fa sops on the semaphore set indicated by .Fa semid . The length of -.Fa array +.Fa sops is indicated by -.Fa nops . +.Fa nsops . Each operation is encoded in a .Vt "struct sembuf" , which is defined as follows: @@ -64,7 +66,7 @@ struct sembuf { .Ed .Pp For each element in -.Fa array , +.Fa sops , .Va sem_op and .Va sem_flg @@ -229,55 +231,75 @@ The .Fn semop system call will fail if: .Bl -tag -width Er -.It Bq Er EINVAL -No semaphore set corresponds to -.Fa semid , -or the process would exceed the system-defined limit for the number of -per-process -.Dv SEM_UNDO -structures. +.\" =========== +.It Bq Er E2BIG +Too many operations are specified. +.Bq Dv SEMOPM +.\" =========== .It Bq Er EACCES -Permission denied due to mismatch between operation and mode of -semaphore set. +Permission is denied, due to a mismatch between the operation +and the mode of the semaphore set. +.\" =========== .It Bq Er EAGAIN -The semaphore's value would have resulted in the process being put to sleep -and +The semaphore's value would result +in the process being put to sleep and .Dv IPC_NOWAIT -was specified. -.It Bq Er E2BIG -Too many operations were specified. -.Bq Dv SEMOPM +is specified. +.\" =========== .It Bq Er EFBIG .\" -.\" I'd have thought this would be EINVAL, but the source says -.\" EFBIG. +.\" I'd have thought this would be EINVAL, +.\" but the source says EFBIG. .\" .Va sem_num -was not in the range of valid semaphores for the set. +is not in the range of valid semaphores for the set. +.\" =========== .It Bq Er EIDRM -The semaphore set was removed from the system. +The semaphore set is removed from the system. +.\" =========== .It Bq Er EINTR The .Fn semop -system call was interrupted by a signal. +system call is interrupted by a signal. +.\" =========== +.It Bq Er EINVAL +No semaphore set corresponds to +.Fa semid , +or the process would exceed the system-defined limit +for the number of per-process +.Dv SEM_UNDO +structures. +.\" =========== .It Bq Er ENOSPC The system .Dv SEM_UNDO pool .Bq Dv SEMMNU is full. +.\" =========== .It Bq Er ERANGE The requested operation would cause either the semaphore's current value .Bq Dv SEMVMX -or its adjust on exit value +or its adjust-on-exit value .Bq Dv SEMAEM to exceed the system-imposed limits. .El +.Sh LEGACY SYNOPSIS +.Fd #include +.Fd #include +.Fd #include +.Pp +The include files +.In sys/types.h +and +.In sys/ipc.h +are necessary. .Sh SEE ALSO .Xr semctl 2 , .Xr semget 2 , -.Xr sigaction 2 +.Xr sigaction 2 , +.Xr compat 5 .Sh BUGS The .Fn semop