diff options
| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2004-12-13 08:39:28 +0000 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2004-12-13 08:39:28 +0000 |
| commit | 540036b2fd7fe90714d9c961132dba78c5ce7a1c (patch) | |
| tree | c883f87db63663a01f8e616b8f6494e1c93669ed /man2/semctl.2 | |
| parent | 30ca894053477911ab060fa2a5ca7474d0414c21 (diff) | |
| download | man-pages-540036b2fd7fe90714d9c961132dba78c5ce7a1c.tar.gz | |
minor wording/formatting fixes
Diffstat (limited to 'man2/semctl.2')
| -rw-r--r-- | man2/semctl.2 | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/man2/semctl.2 b/man2/semctl.2 index 5bb5fdbe36..9d69dcb3f6 100644 --- a/man2/semctl.2 +++ b/man2/semctl.2 @@ -46,7 +46,7 @@ semctl \- semaphore control operations .BI "int semctl(int " semid ", int " semnum ", int " cmd ", ...);" .fi .SH DESCRIPTION -.B semctl +.BR semctl () performs the control operation specified by .I cmd on the semaphore set identified by @@ -156,8 +156,9 @@ calls on the set (with an error return and .I errno set to .BR EIDRM ). -The effective user\-ID of the calling process must be that of the -superuser, or match the creator or owner of the semaphore set. +The effective user\-ID of the calling process must +match the creator or owner of the semaphore set, +or the caller must be privileged. The argument .I semnum is ignored. @@ -263,7 +264,7 @@ calls in other processes to proceed, then those processes are woken up. The calling process must have alter permission on the semaphore set. .SH "RETURN VALUE" On failure -.B semctl +.BR semctl () returns \-1 with .I errno @@ -389,7 +390,7 @@ the macro is defined in <sys/sem.h>. .PP The following system limit on semaphore sets affects a -.B semctl +.BR semctl () call: .TP 11 .B SEMVMX @@ -398,11 +399,11 @@ Maximum value for implementation dependent (32767). .LP For greater portability it is best to always call -.B semctl +.BR semctl () with four arguments. .LP Under Linux, -.B semctl +.BR semctl () is not a system call, but is implemented via the system call .BR ipc (2). .SH "CONFORMING TO" |