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-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h2
-rw-r--r--fs/ecryptfs/inode.c69
-rw-r--r--fs/ecryptfs/main.c1
-rw-r--r--fs/ecryptfs/mmap.c13
4 files changed, 55 insertions, 30 deletions
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 4ba1547bb9ad..599a29237cfe 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 fe83c1050048..cf390dceddd2 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -931,7 +931,7 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
}
mutex_unlock(&crypt_stat->cs_mutex);
- rc = inode_change_ok(inode, ia);
+ rc = setattr_prepare(dentry, ia);
if (rc)
goto out;
if (ia->ia_valid & ATTR_SIZE) {
@@ -1009,15 +1009,14 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,
const char *name, const void *value,
size_t size, int flags)
{
- int rc = 0;
+ int rc;
struct dentry *lower_dentry;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
- if (!d_inode(lower_dentry)->i_op->setxattr) {
+ if (!(d_inode(lower_dentry)->i_opflags & IOP_XATTR)) {
rc = -EOPNOTSUPP;
goto out;
}
-
rc = vfs_setxattr(lower_dentry, name, value, size, flags);
if (!rc && inode)
fsstack_copy_attr_all(inode, d_inode(lower_dentry));
@@ -1029,15 +1028,14 @@ ssize_t
ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,
const char *name, void *value, size_t size)
{
- int rc = 0;
+ int rc;
- if (!lower_inode->i_op->getxattr) {
+ if (!(lower_inode->i_opflags & IOP_XATTR)) {
rc = -EOPNOTSUPP;
goto out;
}
inode_lock(lower_inode);
- rc = lower_inode->i_op->getxattr(lower_dentry, lower_inode,
- name, value, size);
+ rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size);
inode_unlock(lower_inode);
out:
return rc;
@@ -1070,19 +1068,22 @@ 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;
+ int rc;
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_opflags & IOP_XATTR)) {
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 = __vfs_removexattr(lower_dentry, name);
+ inode_unlock(lower_inode);
out:
return rc;
}
@@ -1093,10 +1094,7 @@ const struct inode_operations ecryptfs_symlink_iops = {
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr_link,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_removexattr
};
const struct inode_operations ecryptfs_dir_iops = {
@@ -1111,18 +1109,43 @@ const struct inode_operations ecryptfs_dir_iops = {
.rename = ecryptfs_rename,
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_removexattr
};
const struct inode_operations ecryptfs_main_iops = {
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr,
- .setxattr = ecryptfs_setxattr,
- .getxattr = ecryptfs_getxattr,
.listxattr = ecryptfs_listxattr,
- .removexattr = ecryptfs_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 612004495141..151872dcc1f4 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";
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 9c3437c8a5b1..1f0c471b4ba3 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -32,6 +32,7 @@
#include <linux/file.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
+#include <linux/xattr.h>
#include <asm/unaligned.h>
#include "ecryptfs_kernel.h"
@@ -422,7 +423,7 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
struct inode *lower_inode = d_inode(lower_dentry);
int rc;
- if (!lower_inode->i_op->getxattr || !lower_inode->i_op->setxattr) {
+ if (!(lower_inode->i_opflags & IOP_XATTR)) {
printk(KERN_WARNING
"No support for setting xattr in lower filesystem\n");
rc = -ENOSYS;
@@ -436,15 +437,13 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
goto out;
}
inode_lock(lower_inode);
- size = lower_inode->i_op->getxattr(lower_dentry, lower_inode,
- ECRYPTFS_XATTR_NAME,
- xattr_virt, PAGE_SIZE);
+ size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
+ xattr_virt, PAGE_SIZE);
if (size < 0)
size = 8;
put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt);
- rc = lower_inode->i_op->setxattr(lower_dentry, lower_inode,
- ECRYPTFS_XATTR_NAME,
- xattr_virt, size, 0);
+ rc = __vfs_setxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
+ xattr_virt, size, 0);
inode_unlock(lower_inode);
if (rc)
printk(KERN_ERR "Error whilst attempting to write inode size "
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 01:48:07 +0300