The patch titled
Subject: ipc/mqueue: enforce hard limits
has been added to the -mm tree. Its filename is
ipc-mqueue-enforce-hard-limits.patch
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From: Doug Ledford <dledford@xxxxxxxxxx>
Subject: ipc/mqueue: enforce hard limits
In two places we don't enforce the hard limits for CAP_SYS_RESOURCE apps.
In preparation for making more reasonable hard limits, start enforcing
them even on CAP_SYS_RESOURCE.
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Cc: Serge E. Hallyn <serue@xxxxxxxxxx>
Cc: Amerigo Wang <amwang@xxxxxxxxxx>
Cc: Joe Korty <joe.korty@xxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
ipc/mqueue.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff -puN ipc/mqueue.c~ipc-mqueue-enforce-hard-limits ipc/mqueue.c
--- a/ipc/mqueue.c~ipc-mqueue-enforce-hard-limits
+++ a/ipc/mqueue.c
@@ -299,8 +299,9 @@ static int mqueue_create(struct inode *d
error = -EACCES;
goto out_unlock;
}
- if (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
- !capable(CAP_SYS_RESOURCE)) {
+ if (ipc_ns->mq_queues_count >= HARD_QUEUESMAX ||
+ (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
+ !capable(CAP_SYS_RESOURCE))) {
error = -ENOSPC;
goto out_unlock;
}
@@ -584,7 +585,8 @@ static int mq_attr_ok(struct ipc_namespa
if (attr->mq_maxmsg <= 0 || attr->mq_msgsize <= 0)
return 0;
if (capable(CAP_SYS_RESOURCE)) {
- if (attr->mq_maxmsg > HARD_MSGMAX)
+ if (attr->mq_maxmsg > HARD_MSGMAX ||
+ attr->mq_msgsize > HARD_MSGSIZEMAX)
return 0;
} else {
if (attr->mq_maxmsg > ipc_ns->mq_msg_max ||
_
Subject: Subject: ipc/mqueue: enforce hard limits
Patches currently in -mm which might be from dledford@xxxxxxxxxx are
ipc-mqueue-cleanup-definition-names-and-locations.patch
ipc-mqueue-switch-back-to-using-non-max-values-on-create.patch
ipc-mqueue-enforce-hard-limits.patch
ipc-mqueue-update-maximums-for-the-mqueue-subsystem.patch
mqueue-revert-bump-up-dflt_max.patch
mqueue-dont-use-kmalloc-with-kmalloc_max_size.patch
mqueue-separate-mqueue-default-value-from-maximum-value-v2.patch
selftests-add-mq_open_tests.patch
--
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