X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=kernel%2Fuser.c;h=e7d11cef6998fdb378506d72232c4041738dce2f;hb=ce17204ae633001ef41318d487282730e96b9522;hp=4869563080e9e080954d26f34b70bbffc13de18b;hpb=e9ccb79927225d8cd8d022a7c09bfb2fad935b89;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/user.c b/kernel/user.c
index 4869563080e..e7d11cef699 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -14,20 +14,19 @@
 #include <linux/bitops.h>
 #include <linux/key.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/user_namespace.h>
 
 /*
  * UID task count cache, to get fast user lookup in "alloc_uid"
  * when changing user ID's (ie setuid() and friends).
  */
 
-#define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 8)
-#define UIDHASH_SZ		(1 << UIDHASH_BITS)
 #define UIDHASH_MASK		(UIDHASH_SZ - 1)
 #define __uidhashfn(uid)	(((uid >> UIDHASH_BITS) + uid) & UIDHASH_MASK)
-#define uidhashentry(uid)	(uidhash_table + __uidhashfn((uid)))
+#define uidhashentry(ns, uid)	((ns)->uidhash_table + __uidhashfn((uid)))
 
 static struct kmem_cache *uid_cachep;
-static struct list_head uidhash_table[UIDHASH_SZ];
 
 /*
  * The uidhash_lock is mostly taken from process context, but it is
@@ -94,9 +93,10 @@ struct user_struct *find_user(uid_t uid)
 {
 	struct user_struct *ret;
 	unsigned long flags;
+	struct user_namespace *ns = current->nsproxy->user_ns;
 
 	spin_lock_irqsave(&uidhash_lock, flags);
-	ret = uid_hash_find(uid, uidhashentry(uid));
+	ret = uid_hash_find(uid, uidhashentry(ns, uid));
 	spin_unlock_irqrestore(&uidhash_lock, flags);
 	return ret;
 }
@@ -120,9 +120,9 @@ void free_uid(struct user_struct *up)
 	}
 }
 
-struct user_struct * alloc_uid(uid_t uid)
+struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
 {
-	struct list_head *hashent = uidhashentry(uid);
+	struct list_head *hashent = uidhashentry(ns, uid);
 	struct user_struct *up;
 
 	spin_lock_irq(&uidhash_lock);
@@ -208,14 +208,14 @@ static int __init uid_cache_init(void)
 	int n;
 
 	uid_cachep = kmem_cache_create("uid_cache", sizeof(struct user_struct),
-			0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
+			0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
 
 	for(n = 0; n < UIDHASH_SZ; ++n)
-		INIT_LIST_HEAD(uidhash_table + n);
+		INIT_LIST_HEAD(init_user_ns.uidhash_table + n);
 
 	/* Insert the root user immediately (init already runs as root) */
 	spin_lock_irq(&uidhash_lock);
-	uid_hash_insert(&root_user, uidhashentry(0));
+	uid_hash_insert(&root_user, uidhashentry(&init_user_ns, 0));
 	spin_unlock_irq(&uidhash_lock);
 
 	return 0;