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ioprio_set.2: Document who==0 for IOPRIO_WHO_PROCESS and IOPRIO_WHO_PGRP 

For IOPRIO_WHO_PROCESS, who==0 means operate on the caller.
For IOPRIO_WHO_PGRP, who==0 means operate on the caller's
process group.

See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652443

Reported-by: Марк Коренберг <socketpair@gmail.com>
Reported-by: Kalle Olavi Niemitalo <kon@iki.fi>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2012-07-29 08:07:43 +02:00
parent c4949ba488
commit 82fdd7c7d0
1 changed files with 8 additions and 0 deletions
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8
man2/ioprio_set.2
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@ -56,15 +56,23 @@ is interpreted, and has one of the following values:
.B IOPRIO_WHO_PROCESS
.I who
is a process ID or thread ID identifying a single process or thread.
If
.I who
is 0, then operate on the calling thread.
.TP
.B IOPRIO_WHO_PGRP
.I who
is a process group ID identifying all the members of a process group.
If
.I who
is 0, then operate on the process group of which the caller is a member.
.TP
.B IOPRIO_WHO_USER
.I who
is a user ID identifying all of the processes that
have a matching real UID.
.\" FIXME who==0 needs to be documented,
.\" See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652443
.PP
If
.I which