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From: Waiman Long <longman@redhat.com>
To: "Luis R. Rodriguez" <mcgrof@kernel.org>,
	Kees Cook <keescook@chromium.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Matthew Wilcox <willy@infradead.org>,
	Waiman Long <longman@redhat.com>
Subject: [PATCH 5/5] ipc: Show ranges of msgmni and shmmni with CTL_FLAGS_SHOW_RANGE
Date: Wed,  7 Mar 2018 15:34:29 -0500	[thread overview]
Message-ID: <1520454869-13871-6-git-send-email-longman@redhat.com> (raw)
In-Reply-To: <1520454869-13871-1-git-send-email-longman@redhat.com>

The CTL_FLAGS_SHOW_RANGE flag is added to the msgmni and shmmni
ctl_table entries to show their ranges. Two range table entries are
reserved for the new *_range sysctl parameters.

Signed-off-by: Waiman Long <longman@redhat.com>
---
 ipc/ipc_sysctl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 2c03f57..3b4d7cd 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -143,7 +143,7 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
 		.proc_handler	= proc_ipc_dointvec_minmax,
 		.extra1		= &zero,
 		.extra2		= &ipc_mni,
-		.flags		= CTL_FLAGS_CLAMP_RANGE,
+		.flags		= CTL_FLAGS_CLAMP_RANGE|CTL_FLAGS_SHOW_RANGE,
 	},
 	{
 		.procname	= "shm_rmid_forced",
@@ -171,7 +171,7 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
 		.proc_handler	= proc_ipc_dointvec_minmax,
 		.extra1		= &zero,
 		.extra2		= &ipc_mni,
-		.flags		= CTL_FLAGS_CLAMP_RANGE,
+		.flags		= CTL_FLAGS_CLAMP_RANGE|CTL_FLAGS_SHOW_RANGE,
 	},
 	{
 		.procname	= "auto_msgmni",
@@ -228,6 +228,7 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
 		.extra2		= &int_max,
 	},
 #endif
+	CTL_RESERVE_RANGES(2)
 	{}
 };
 
-- 
1.8.3.1

  parent reply	other threads:[~2018-03-07 20:35 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-07 20:34 [PATCH 0/5] sysctl: Enable easy addition of range showing sysctl parameters Waiman Long
2018-03-07 20:34 ` [PATCH 1/5] sysctl: Clarify how the ctl_table.flags should be set Waiman Long
2018-03-07 20:34 ` [PATCH 2/5] sysctl: Add a new handler proc_show_minmax() Waiman Long
2018-03-07 20:34 ` [PATCH 3/5] sysctl: Add a new ctl_table flag to show min/max range Waiman Long
2018-03-07 20:34 ` [PATCH 4/5] proc/sysctl: Handle CTL_FLAGS_SHOW_RANGE ctl_table flag Waiman Long
2018-03-07 20:34 ` Waiman Long [this message]
2018-03-07 22:48 ` [PATCH 0/5] sysctl: Enable easy addition of range showing sysctl parameters Andrew Morton
2018-03-08 19:21   ` Waiman Long
2018-03-08 18:34 ` Luis R. Rodriguez
2018-03-08 19:11   ` Waiman Long

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