LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

mq_overview.7: Change documented ranges for msg_max and msgsize_max 

Linux 2.6.28 changed the permissible ranges for
these /proc files.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2009-09-27 08:20:28 +02:00
parent 76a34baa39
commit 5bbdbc7e92
1 changed files with 13 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
man7/mq_overview.7
View File

@ -23,7 +23,7 @@
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.TH MQ_OVERVIEW 7 2009-07-25 "Linux" "Linux Programmer's Manual"
.TH MQ_OVERVIEW 7 2009-09-27 "Linux" "Linux Programmer's Manual"
.SH NAME
mq_overview \- Overview of POSIX message queues
.SH DESCRIPTION
@ -146,9 +146,11 @@ This value acts as a ceiling on the
.I attr\->mq_maxmsg
argument given to
.BR mq_open (3).
The default and minimum value for
The default value for
.I msg_max
is 10; the upper limit is
is 10.
The minimum value is 1 (10 in kernels before 2.6.28).
The upper limit is
.BR HARD_MAX :
.IR "(131072\ /\ sizeof(void\ *))"
(32768 on Linux/86).
@ -165,11 +167,15 @@ This value acts as a ceiling on the
.I attr\->mq_msgsize
argument given to
.BR mq_open (3).
The default and minimum value for
The default value for
.I msgsize_max
is 8192 bytes; the upper limit is
.B INT_MAX
(2147483647 on Linux/86).
is 8192 bytes.
The minimum value is 128 (8192 in kernels before 2.6.28).
The upper limit for
.I msgsize_max
is 1,048,576 (in kernels before 2.6.28, the upper limit was
.BR INT_MAX ;
that is, 2,147,483,647 on Linux/86).
This limit is ignored for privileged processes
.RB ( CAP_SYS_RESOURCE ).
.TP