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ANDROID: vfs: Add permission2 for filesystems with per mount permissions

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This allows filesystems to use their mount private data to
influence the permssions they return in permission2. It has
been separated into a new call to avoid disrupting current
permission users.

Change-Id: I9d416e3b8b6eca84ef3e336bd2af89ddd51df6ca
Signed-off-by: Daniel Rosenberg <drosen@google.com>
This commit is contained in:
Daniel Rosenberg
2016-10-26 16:27:45 -07:00
committed by Dmitry Shmidt
parent 2757e9bdf4
commit bbcd0ffae5
10 changed files with 156 additions and 64 deletions
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2
fs/notify/fanotify/fanotify_user.c
View File

@@ -488,7 +488,7 @@ static int fanotify_find_path(int dfd, const char __user *filename,
}
/* you can only watch an inode if you have read permissions on it */
ret = inode_permission(path->dentry->d_inode, MAY_READ);
ret = inode_permission2(path->mnt, path->dentry->d_inode, MAY_READ);
if (ret)
path_put(path);
out:

2
fs/notify/inotify/inotify_user.c
View File

@@ -337,7 +337,7 @@ static int inotify_find_inode(const char __user *dirname, struct path *path, uns
if (error)
return error;
/* you can only watch an inode if you have read permissions on it */
error = inode_permission(path->dentry->d_inode, MAY_READ);
error = inode_permission2(path->mnt, path->dentry->d_inode, MAY_READ);
if (error)
path_put(path);
return error;