diff options
Diffstat (limited to 'man2/msgctl.2')
| -rw-r--r-- | man2/msgctl.2 | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/man2/msgctl.2 b/man2/msgctl.2 index b905b0f..27aca82 100644 --- a/man2/msgctl.2 +++ b/man2/msgctl.2 @@ -16,7 +16,7 @@ .\" 2005-08-02, mtk: Added IPC_INFO, MSG_INFO, MSG_STAT descriptions .\" 2018-03-20, dbueso: Added MSG_STAT_ANY description. .\" -.TH msgctl 2 2023-03-30 "Linux man-pages 6.05.01" +.TH msgctl 2 2024-03-03 "Linux man-pages 6.7" .SH NAME msgctl \- System V message control operations .SH LIBRARY @@ -25,20 +25,20 @@ Standard C library .SH SYNOPSIS .nf .B #include <sys/msg.h> -.PP -.BI "int msgctl(int " msqid ", int " cmd ", struct msqid_ds *" buf ); +.P +.BI "int msgctl(int " msqid ", int " op ", struct msqid_ds *" buf ); .fi .SH DESCRIPTION .BR msgctl () performs the control operation specified by -.I cmd +.I op on the System\ V message queue with identifier .IR msqid . -.PP +.P The .I msqid_ds data structure is defined in \fI<sys/msg.h>\fP as follows: -.PP +.P .in +4n .EX struct msqid_ds { @@ -55,7 +55,7 @@ struct msqid_ds { }; .EE .in -.PP +.P The fields of the .I msqid_ds structure are as follows: @@ -102,13 +102,13 @@ system call. ID of the process that performed the last .BR msgrcv (2) system call. -.PP +.P The .I ipc_perm structure is defined as follows (the highlighted fields are settable using .BR IPC_SET ): -.PP +.P .in +4n .EX struct ipc_perm { @@ -122,7 +122,7 @@ struct ipc_perm { }; .EE .in -.PP +.P The least significant 9 bits of the .I mode field of the @@ -138,11 +138,11 @@ l l. 0004 Read by others 0002 Write by others .TE -.PP +.P Bits 0100, 0010, and 0001 (the execute bits) are unused by the system. -.PP +.P Valid values for -.I cmd +.I op are: .TP .B IPC_STAT @@ -312,7 +312,7 @@ or .B MSG_STAT_ANY operation returns the identifier of the queue whose index was given in .IR msqid . -.PP +.P On failure, \-1 is returned and .I errno is set to indicate the error. @@ -320,7 +320,7 @@ is set to indicate the error. .TP .B EACCES The argument -.I cmd +.I op is equal to .B IPC_STAT or @@ -333,7 +333,7 @@ capability in the user namespace that governs its IPC namespace. .TP .B EFAULT The argument -.I cmd +.I op has the value .B IPC_SET or @@ -347,7 +347,7 @@ The message queue was removed. .TP .B EINVAL Invalid value for -.I cmd +.I op or .IR msqid . Or: for a @@ -358,7 +358,7 @@ referred to an array slot that is currently unused. .TP .B EPERM The argument -.I cmd +.I op has the value .B IPC_SET or @@ -389,7 +389,7 @@ POSIX.1-2008. .SH HISTORY POSIX.1-2001, SVr4. .\" SVID does not document the EIDRM error condition. -.PP +.P Various fields in the \fIstruct msqid_ds\fP were typed as .I short @@ -402,7 +402,7 @@ a recompilation under glibc-2.1.91 or later should suffice. (The kernel distinguishes old and new calls by an .B IPC_64 flag in -.IR cmd .) +.IR op .) .SH NOTES The .BR IPC_INFO , |