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ioprio_set.2: CAP_SYS_ADMIN is not reqd to set IOPRIO_CLASS_IDLE anymore

PATCH In review Nikanth Karthikesan 2 participants 4 messages Jul 8, 2008 2 messages not in the archive Man-pages: manual pages for Linux -- Sections 2, 3, 4, 5, and 7

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Nikanth Karthikesan

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#0 lore raw

PATCH 1/1 ioprio_set.2: CAP_SYS_ADMIN is not reqd to set IOPRIO_CLASS_IDLE anymore

Since linux-2.6.25 CAP_SYS_ADMIN capability is not required to set IOPRIO_CLASS_IDLE.

Signed-off-by Nikanth Karthikesan <[email protected]>
---
 man2/ioprio_set.2 |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
man2/ioprio_set.2 +4 -3
Index: b/man2/ioprio_set.2
===================================================================
@@ -293,11 +293,12 @@ capability can change the priority of an
 .B "What is the desired priority"
 Attempts to set very high priorities
 .RB ( IOPRIO_CLASS_RT )
-or very low ones
-.RB ( IOPRIO_CLASS_IDLE )
 require the
 .B CAP_SYS_ADMIN
-capability.
+capability. Kernel versions till 2.6.24 require
+.B CAP_SYS_ADMIN
+capability even to set very low priority
+.RB ( IOPRIO_CLASS_IDLE ).
 .PP
 A call to
 .BR ioprio_set ()

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A message that is not in the archive (sent off-list or not yet received): [email protected]

#2 lore raw
Quoted 16 lines · Nikanth Karthikesan

Since linux-2.6.25 CAP_SYS_ADMIN capability is not required to set IOPRIO_CLASS_IDLE.

Signed-off-by Nikanth Karthikesan <[email protected]>
---
 man2/ioprio_set.2 |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Index: b/man2/ioprio_set.2
===================================================================

man2/ioprio_set.2 +0 -0
@@ -293,11 +293,12 @@ capability can change the priority of an
 .B "What is the desired priority"
 Attempts to set very high priorities

man2/ioprio_set.2 capability can change the priority of an · line 301

Quoted 10 lines
man2/ioprio_set.2 +4 -3
 .RB ( IOPRIO_CLASS_RT )
-or very low ones
-.RB ( IOPRIO_CLASS_IDLE )
 require the
 .B CAP_SYS_ADMIN
-capability.
+capability. Kernel versions till 2.6.24 require
+.B CAP_SYS_ADMIN
+capability even to set very low priority
+.RB ( IOPRIO_CLASS_IDLE ).

Hi Nikanth,

Thanks for this!

I'll reword this as

==
Attempts to set very high priorities
.RB ( IOPRIO_CLASS_RT )
require the
.B CAP_SYS_ADMIN
capability.
Kernel versions up to 2.6.24 also required B CAP_SYS_ADMIN
to set very low priority
.RB ( IOPRIO_CLASS_IDLE ),
but since Linux 2.6.24 this is no longer required. ==

Okay?

The change will be in man-pages-3.04.

Cheers,

Michael

Signature · 8 lines
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
man-pages online: http://www.kernel.org/doc/man-pages/online_pages.html
Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html
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A message that is not in the archive (sent off-list or not yet received): cfd18e0f0807080017y56441677wdf8163c520e8103f-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org

author
#4 lore raw
Quoted 1 line · On Tuesday 08 July 2008 12:47:26 Michael Kerrisk wrote:

On Tue, Jul 8, 2008 at 8:37 AM, Nikanth Karthikesan <[email protected]>

Quoted 46 lines · wrote:
Quoted 16 lines

Since linux-2.6.25 CAP_SYS_ADMIN capability is not required to set IOPRIO_CLASS_IDLE.

Signed-off-by Nikanth Karthikesan <[email protected]>
---
 man2/ioprio_set.2 |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Index: b/man2/ioprio_set.2
===================================================================

man2/ioprio_set.2 +0 -0
@@ -293,11 +293,12 @@ capability can change the priority of an
 .B "What is the desired priority"
 Attempts to set very high priorities

man2/ioprio_set.2 capability can change the priority of an · line 301

Quoted 10 lines
man2/ioprio_set.2 +4 -3
 .RB ( IOPRIO_CLASS_RT )
-or very low ones
-.RB ( IOPRIO_CLASS_IDLE )
 require the
 .B CAP_SYS_ADMIN
-capability.
+capability. Kernel versions till 2.6.24 require
+.B CAP_SYS_ADMIN
+capability even to set very low priority
+.RB ( IOPRIO_CLASS_IDLE ).

Hi Nikanth,

Thanks for this!

I'll reword this as

==
Attempts to set very high priorities
.RB ( IOPRIO_CLASS_RT )
require the
.B CAP_SYS_ADMIN
capability.
Kernel versions up to 2.6.24 also required B CAP_SYS_ADMIN
to set very low priority
.RB ( IOPRIO_CLASS_IDLE ),
but since Linux 2.6.24 this is no longer required. ==

Quoted 2 lines

Okay?

Thanks, Michael.

Quoted 2 lines

The change will be in man-pages-3.04.

Thanks
Nikanth Karthikesan
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#5 lore raw
In reply to a message not in the archive
Quoted 34 lines · Michael Kerrisk
Quoted 16 lines · Nikanth Karthikesan

Since linux-2.6.25 CAP_SYS_ADMIN capability is not required to set IOPRIO_CLASS_IDLE.

Signed-off-by Nikanth Karthikesan <[email protected]>
---
 man2/ioprio_set.2 |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Index: b/man2/ioprio_set.2
===================================================================

man2/ioprio_set.2 +0 -0
@@ -293,11 +293,12 @@ capability can change the priority of an
 .B "What is the desired priority"
 Attempts to set very high priorities

man2/ioprio_set.2 capability can change the priority of an · line 301

Quoted 10 lines
man2/ioprio_set.2 +4 -3
 .RB ( IOPRIO_CLASS_RT )
-or very low ones
-.RB ( IOPRIO_CLASS_IDLE )
 require the
 .B CAP_SYS_ADMIN
-capability.
+capability. Kernel versions till 2.6.24 require
+.B CAP_SYS_ADMIN
+capability even to set very low priority
+.RB ( IOPRIO_CLASS_IDLE ).

Hi Nikanth,

Thanks for this!

I'll reword this as

Quoted 11 lines

==
Attempts to set very high priorities
.RB ( IOPRIO_CLASS_RT )
require the
.B CAP_SYS_ADMIN
capability.
Kernel versions up to 2.6.24 also required B CAP_SYS_ADMIN
to set very low priority
.RB ( IOPRIO_CLASS_IDLE ),
but since Linux 2.6.24 this is no longer required.

And I fixed my typo there: "since Linux 2.6.25..."
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