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Diffstat (limited to 'fs/ext4/acl.c')
-rw-r--r--fs/ext4/acl.c37
1 files changed, 26 insertions, 11 deletions
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index a5c29bb3b83..e6e0d988439 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -55,16 +55,23 @@ ext4_acl_from_disk(const void *value, size_t size)
case ACL_OTHER:
value = (char *)value +
sizeof(ext4_acl_entry_short);
- acl->a_entries[n].e_id = ACL_UNDEFINED_ID;
break;
case ACL_USER:
+ value = (char *)value + sizeof(ext4_acl_entry);
+ if ((char *)value > end)
+ goto fail;
+ acl->a_entries[n].e_uid =
+ make_kuid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
+ break;
case ACL_GROUP:
value = (char *)value + sizeof(ext4_acl_entry);
if ((char *)value > end)
goto fail;
- acl->a_entries[n].e_id =
- le32_to_cpu(entry->e_id);
+ acl->a_entries[n].e_gid =
+ make_kgid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
break;
default:
@@ -98,13 +105,19 @@ ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
e = (char *)ext_acl + sizeof(ext4_acl_header);
for (n = 0; n < acl->a_count; n++) {
+ const struct posix_acl_entry *acl_e = &acl->a_entries[n];
ext4_acl_entry *entry = (ext4_acl_entry *)e;
- entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
- entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
- switch (acl->a_entries[n].e_tag) {
+ entry->e_tag = cpu_to_le16(acl_e->e_tag);
+ entry->e_perm = cpu_to_le16(acl_e->e_perm);
+ switch (acl_e->e_tag) {
case ACL_USER:
+ entry->e_id = cpu_to_le32(
+ from_kuid(&init_user_ns, acl_e->e_uid));
+ e += sizeof(ext4_acl_entry);
+ break;
case ACL_GROUP:
- entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
+ entry->e_id = cpu_to_le32(
+ from_kgid(&init_user_ns, acl_e->e_gid));
e += sizeof(ext4_acl_entry);
break;
@@ -374,7 +387,7 @@ ext4_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
return PTR_ERR(acl);
if (acl == NULL)
return -ENODATA;
- error = posix_acl_to_xattr(acl, buffer, size);
+ error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
posix_acl_release(acl);
return error;
@@ -397,7 +410,7 @@ ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
return -EPERM;
if (value) {
- acl = posix_acl_from_xattr(value, size);
+ acl = posix_acl_from_xattr(&init_user_ns, value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
else if (acl) {
@@ -410,8 +423,10 @@ ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
retry:
handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
- if (IS_ERR(handle))
- return PTR_ERR(handle);
+ if (IS_ERR(handle)) {
+ error = PTR_ERR(handle);
+ goto release_and_out;
+ }
error = ext4_set_acl(handle, inode, type, acl);
ext4_journal_stop(handle);
if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))