Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 22 insertions, 10 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 57554bfbed7..e31903aadd9 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1419,6 +1419,8 @@ static struct file_operations proc_tgid_attr_operations;
 static struct inode_operations proc_tgid_attr_inode_operations;
 #endif
 
+static int get_tid_list(int index, unsigned int *tids, struct inode *dir);
+
 /* SMP-safe */
 static struct dentry *proc_pident_lookup(struct inode *dir, 
 					 struct dentry *dentry,
@@ -1458,7 +1460,7 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
 	 */
 	switch(p->type) {
 		case PROC_TGID_TASK:
-			inode->i_nlink = 3;
+			inode->i_nlink = 2 + get_tid_list(2, NULL, dir);
 			inode->i_op = &proc_task_inode_operations;
 			inode->i_fop = &proc_task_operations;
 			break;
@@ -1701,13 +1703,13 @@ static struct inode_operations proc_self_inode_operations = {
 };
 
 /**
- * proc_pid_unhash -  Unhash /proc/<pid> entry from the dcache.
+ * proc_pid_unhash -  Unhash /proc/@pid entry from the dcache.
  * @p: task that should be flushed.
  *
- * Drops the /proc/<pid> dcache entry from the hash chains.
+ * Drops the /proc/@pid dcache entry from the hash chains.
  *
- * Dropping /proc/<pid> entries and detach_pid must be synchroneous,
- * otherwise e.g. /proc/<pid>/exe might point to the wrong executable,
+ * Dropping /proc/@pid entries and detach_pid must be synchroneous,
+ * otherwise e.g. /proc/@pid/exe might point to the wrong executable,
  * if the pid value is immediately reused. This is enforced by
  * - caller must acquire spin_lock(p->proc_lock)
  * - must be called before detach_pid()
@@ -1739,8 +1741,8 @@ struct dentry *proc_pid_unhash(struct task_struct *p)
 }
 
 /**
- * proc_pid_flush - recover memory used by stale /proc/<pid>/x entries
- * @proc_entry: directoy to prune.
+ * proc_pid_flush - recover memory used by stale /proc/@pid/x entries
+ * @proc_dentry: directoy to prune.
  *
  * Shrink the /proc directory that was used by the just killed thread.
  */
@@ -1800,8 +1802,12 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct
 	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tgid_base_inode_operations;
 	inode->i_fop = &proc_tgid_base_operations;
-	inode->i_nlink = 3;
 	inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+	inode->i_nlink = 5;
+#else
+	inode->i_nlink = 4;
+#endif
 
 	dentry->d_op = &pid_base_dentry_operations;
 
@@ -1855,8 +1861,12 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry
 	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tid_base_inode_operations;
 	inode->i_fop = &proc_tid_base_operations;
-	inode->i_nlink = 3;
 	inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+	inode->i_nlink = 4;
+#else
+	inode->i_nlink = 3;
+#endif
 
 	dentry->d_op = &pid_base_dentry_operations;
 
@@ -1935,7 +1945,8 @@ static int get_tid_list(int index, unsigned int *tids, struct inode *dir)
 
 		if (--index >= 0)
 			continue;
-		tids[nr_tids] = tid;
+		if (tids != NULL)
+			tids[nr_tids] = tid;
 		nr_tids++;
 		if (nr_tids >= PROC_MAXPIDS)
 			break;
@@ -2035,6 +2046,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
 	}
 
 	nr_tids = get_tid_list(pos, tid_array, inode);
+	inode->i_nlink = pos + nr_tids;
 
 	for (i = 0; i < nr_tids; i++) {
 		unsigned long j = PROC_NUMBUF;