X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Finotify.c;h=2fecb7af4a77d6316171f0e25a40fd9027a71647;hb=b1086eef813ecee09bd6b8ae364acf0fad065cba;hp=2fd97ef547ffcac2b35a3bcee5a37667b8e51ef4;hpb=820249bafe441dce5336ad544a5e709df42fceb5;p=linux-2.6

diff --git a/fs/inotify.c b/fs/inotify.c
index 2fd97ef547..2fecb7af4a 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -176,6 +176,7 @@ static inline void put_inotify_dev(struct inotify_device *dev)
 	if (atomic_dec_and_test(&dev->count)) {
 		atomic_dec(&dev->user->inotify_devs);
 		free_uid(dev->user);
+		idr_destroy(&dev->idr);
 		kfree(dev);
 	}
 }
@@ -363,15 +364,16 @@ static int inotify_dev_get_wd(struct inotify_device *dev,
 /*
  * find_inode - resolve a user-given path to a specific inode and return a nd
  */
-static int find_inode(const char __user *dirname, struct nameidata *nd)
+static int find_inode(const char __user *dirname, struct nameidata *nd,
+		      unsigned flags)
 {
 	int error;
 
-	error = __user_walk(dirname, LOOKUP_FOLLOW, nd);
+	error = __user_walk(dirname, flags, nd);
 	if (error)
 		return error;
 	/* you can only watch an inode if you have read permissions on it */
-	error = permission(nd->dentry->d_inode, MAY_READ, NULL);
+	error = vfs_permission(nd, MAY_READ);
 	if (error) 
 		path_release(nd);
 	return error;
@@ -931,6 +933,8 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
 	struct nameidata nd;
 	struct file *filp;
 	int ret, fput_needed;
+	int mask_add = 0;
+	unsigned flags = 0;
 
 	filp = fget_light(fd, &fput_needed);
 	if (unlikely(!filp))
@@ -942,7 +946,12 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
 		goto fput_and_out;
 	}
 
-	ret = find_inode(path, &nd);
+	if (!(mask & IN_DONT_FOLLOW))
+		flags |= LOOKUP_FOLLOW;
+	if (mask & IN_ONLYDIR)
+		flags |= LOOKUP_DIRECTORY;
+
+	ret = find_inode(path, &nd, flags);
 	if (unlikely(ret))
 		goto fput_and_out;
 
@@ -953,6 +962,9 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
 	down(&inode->inotify_sem);
 	down(&dev->sem);
 
+	if (mask & IN_MASK_ADD)
+		mask_add = 1;
+
 	/* don't let user-space set invalid bits: we don't want flags set */
 	mask &= IN_ALL_EVENTS;
 	if (unlikely(!mask)) {
@@ -966,7 +978,10 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
 	 */
 	old = inode_find_dev(inode, dev);
 	if (unlikely(old)) {
-		old->mask = mask;
+		if (mask_add)
+			old->mask |= mask;
+		else
+			old->mask = mask;
 		ret = old->wd;
 		goto out;
 	}