Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
---
fs/ecryptfs/ecryptfs_kernel.h | 2 ++
fs/ecryptfs/inode.c | 62 +++++++++++++++++++++++++++++++++----------
fs/ecryptfs/main.c | 1 +
3 files changed, 51 insertions(+), 14 deletions(-)
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 4ba1547..599a292 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -715,4 +715,6 @@ int ecryptfs_set_f_namelen(long *namelen, long lower_namelen,
int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
loff_t offset);
+extern const struct xattr_handler *ecryptfs_xattr_handlers[];
+
#endif /* #ifndef ECRYPTFS_KERNEL_H */
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 9d153b6..cef32cc 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -1066,19 +1066,22 @@ out:
return rc;
}
-static int ecryptfs_removexattr(struct dentry *dentry, const char *name)
+static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode,
+ const char *name)
{
int rc = 0;
struct dentry *lower_dentry;
+ struct inode *lower_inode;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
- if (!d_inode(lower_dentry)->i_op->removexattr) {
+ lower_inode = ecryptfs_inode_to_lower(inode);
+ if (!lower_inode->i_op->removexattr) {
rc = -EOPNOTSUPP;
goto out;
}
- inode_lock(d_inode(lower_dentry));
- rc = d_inode(lower_dentry)->i_op->removexattr(lower_dentry, name);
- inode_unlock(d_inode(lower_dentry));
+ inode_lock(lower_inode);
+ rc = lower_inode->i_op->removexattr(lower_dentry, name);
+ inode_unlock(lower_inode);
out:
return rc;
}
@@ -1089,10 +1092,10 @@ const struct inode_operations ecryptfs_symlink_iops = {
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr_link,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_removexattr
+ .removexattr = generic_removexattr
};
const struct inode_operations ecryptfs_dir_iops = {
@@ -1107,18 +1110,49 @@ const struct inode_operations ecryptfs_dir_iops = {
.rename = ecryptfs_rename,
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_removexattr
+ .removexattr = generic_removexattr
};
const struct inode_operations ecryptfs_main_iops = {
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_removexattr
+ .removexattr = generic_removexattr
+};
+
+static int ecryptfs_xattr_get(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, void *buffer, size_t size)
+{
+ return ecryptfs_getxattr(dentry, inode, name, buffer, size);
+}
+
+static int ecryptfs_xattr_set(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value, size_t size,
+ int flags)
+{
+ if (value)
+ return ecryptfs_setxattr(dentry, inode, name, value, size, flags);
+ else {
+ BUG_ON(flags != XATTR_REPLACE);
+ return ecryptfs_removexattr(dentry, inode, name);
+ }
+}
+
+const struct xattr_handler ecryptfs_xattr_handler = {
+ .prefix = "", /* match anything */
+ .get = ecryptfs_xattr_get,
+ .set = ecryptfs_xattr_set,
+};
+
+const struct xattr_handler *ecryptfs_xattr_handlers[] = {
+ &ecryptfs_xattr_handler,
+ NULL
};
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 6120044..151872d 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -529,6 +529,7 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
/* ->kill_sb() will take care of sbi after that point */
sbi = NULL;
s->s_op = &ecryptfs_sops;
+ s->s_xattr = ecryptfs_xattr_handlers;
s->s_d_op = &ecryptfs_dops;
err = "Reading sb failed";
--
2.7.4
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