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38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
From: tonyj@suse.de
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Subject: Export namespace semaphore
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Patch-mainline: no
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Export global namespace_sem (this used to be a per namespace semaphore).
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Alas, this isn't going to win _any_ points for style.
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Patch is not in mainline -- pending AppArmor code submission to lkml
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---
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fs/namespace.c | 3 ++-
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include/linux/mnt_namespace.h | 3 +++
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2 files changed, 5 insertions(+), 1 deletion(-)
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--- linux-2.6.19.orig/fs/namespace.c
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+++ linux-2.6.19/fs/namespace.c
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@@ -37,7 +37,8 @@ static int event;
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static struct list_head *mount_hashtable __read_mostly;
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static int hash_mask __read_mostly, hash_bits __read_mostly;
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static struct kmem_cache *mnt_cache __read_mostly;
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-static struct rw_semaphore namespace_sem;
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+struct rw_semaphore namespace_sem;
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+EXPORT_SYMBOL_GPL(namespace_sem);
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/* /sys/fs */
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decl_subsys(fs, NULL, NULL);
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--- linux-2.6.19.orig/include/linux/mnt_namespace.h
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+++ linux-2.6.19/include/linux/mnt_namespace.h
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@@ -6,6 +6,9 @@
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#include <linux/sched.h>
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#include <linux/nsproxy.h>
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+/* exported for AppArmor (SubDomain) */
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+extern struct rw_semaphore namespace_sem;
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+
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struct mnt_namespace {
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atomic_t count;
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struct vfsmount * root;
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