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Diffstat (limited to 'fs/f2fs/xattr.c')
-rw-r--r--fs/f2fs/xattr.c110
1 files changed, 62 insertions, 48 deletions
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 503c2451131..8bea941ee30 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -26,7 +26,7 @@
#include "xattr.h"
static size_t f2fs_xattr_generic_list(struct dentry *dentry, char *list,
- size_t list_size, const char *name, size_t name_len, int type)
+ size_t list_size, const char *name, size_t len, int type)
{
struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
int total_len, prefix_len = 0;
@@ -53,11 +53,11 @@ static size_t f2fs_xattr_generic_list(struct dentry *dentry, char *list,
return -EINVAL;
}
- total_len = prefix_len + name_len + 1;
+ total_len = prefix_len + len + 1;
if (list && total_len <= list_size) {
memcpy(list, prefix, prefix_len);
- memcpy(list + prefix_len, name, name_len);
- list[prefix_len + name_len] = '\0';
+ memcpy(list + prefix_len, name, len);
+ list[prefix_len + len] = '\0';
}
return total_len;
}
@@ -108,11 +108,12 @@ static int f2fs_xattr_generic_set(struct dentry *dentry, const char *name,
if (strcmp(name, "") == 0)
return -EINVAL;
- return f2fs_setxattr(dentry->d_inode, type, name, value, size, NULL);
+ return f2fs_setxattr(dentry->d_inode, type, name,
+ value, size, NULL, flags);
}
static size_t f2fs_xattr_advise_list(struct dentry *dentry, char *list,
- size_t list_size, const char *name, size_t name_len, int type)
+ size_t list_size, const char *name, size_t len, int type)
{
const char *xname = F2FS_SYSTEM_ADVISE_PREFIX;
size_t size;
@@ -155,9 +156,6 @@ static int f2fs_xattr_advise_set(struct dentry *dentry, const char *name,
}
#ifdef CONFIG_F2FS_FS_SECURITY
-static int __f2fs_setxattr(struct inode *inode, int name_index,
- const char *name, const void *value, size_t value_len,
- struct page *ipage);
static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
void *page)
{
@@ -165,9 +163,9 @@ static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
int err = 0;
for (xattr = xattr_array; xattr->name != NULL; xattr++) {
- err = __f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
+ err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
xattr->name, xattr->value,
- xattr->value_len, (struct page *)page);
+ xattr->value_len, (struct page *)page, 0);
if (err < 0)
break;
}
@@ -241,26 +239,26 @@ const struct xattr_handler *f2fs_xattr_handlers[] = {
NULL,
};
-static inline const struct xattr_handler *f2fs_xattr_handler(int name_index)
+static inline const struct xattr_handler *f2fs_xattr_handler(int index)
{
const struct xattr_handler *handler = NULL;
- if (name_index > 0 && name_index < ARRAY_SIZE(f2fs_xattr_handler_map))
- handler = f2fs_xattr_handler_map[name_index];
+ if (index > 0 && index < ARRAY_SIZE(f2fs_xattr_handler_map))
+ handler = f2fs_xattr_handler_map[index];
return handler;
}
-static struct f2fs_xattr_entry *__find_xattr(void *base_addr, int name_index,
- size_t name_len, const char *name)
+static struct f2fs_xattr_entry *__find_xattr(void *base_addr, int index,
+ size_t len, const char *name)
{
struct f2fs_xattr_entry *entry;
list_for_each_xattr(entry, base_addr) {
- if (entry->e_name_index != name_index)
+ if (entry->e_name_index != index)
continue;
- if (entry->e_name_len != name_len)
+ if (entry->e_name_len != len)
continue;
- if (!memcmp(entry->e_name, name, name_len))
+ if (!memcmp(entry->e_name, name, len))
break;
}
return entry;
@@ -347,6 +345,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
if (ipage) {
inline_addr = inline_xattr_addr(ipage);
+ f2fs_wait_on_page_writeback(ipage, NODE);
} else {
page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(page)) {
@@ -354,6 +353,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
return PTR_ERR(page);
}
inline_addr = inline_xattr_addr(page);
+ f2fs_wait_on_page_writeback(page, NODE);
}
memcpy(inline_addr, txattr_addr, inline_size);
f2fs_put_page(page, 1);
@@ -374,6 +374,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
return PTR_ERR(xpage);
}
f2fs_bug_on(new_nid);
+ f2fs_wait_on_page_writeback(xpage, NODE);
} else {
struct dnode_of_data dn;
set_new_dnode(&dn, inode, NULL, NULL, new_nid);
@@ -396,42 +397,43 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
return 0;
}
-int f2fs_getxattr(struct inode *inode, int name_index, const char *name,
+int f2fs_getxattr(struct inode *inode, int index, const char *name,
void *buffer, size_t buffer_size)
{
struct f2fs_xattr_entry *entry;
void *base_addr;
int error = 0;
- size_t value_len, name_len;
+ size_t size, len;
if (name == NULL)
return -EINVAL;
- name_len = strlen(name);
- if (name_len > F2FS_NAME_LEN)
+
+ len = strlen(name);
+ if (len > F2FS_NAME_LEN)
return -ERANGE;
base_addr = read_all_xattrs(inode, NULL);
if (!base_addr)
return -ENOMEM;
- entry = __find_xattr(base_addr, name_index, name_len, name);
+ entry = __find_xattr(base_addr, index, len, name);
if (IS_XATTR_LAST_ENTRY(entry)) {
error = -ENODATA;
goto cleanup;
}
- value_len = le16_to_cpu(entry->e_value_size);
+ size = le16_to_cpu(entry->e_value_size);
- if (buffer && value_len > buffer_size) {
+ if (buffer && size > buffer_size) {
error = -ERANGE;
goto cleanup;
}
if (buffer) {
char *pval = entry->e_name + entry->e_name_len;
- memcpy(buffer, pval, value_len);
+ memcpy(buffer, pval, size);
}
- error = value_len;
+ error = size;
cleanup:
kzfree(base_addr);
@@ -475,15 +477,15 @@ cleanup:
return error;
}
-static int __f2fs_setxattr(struct inode *inode, int name_index,
- const char *name, const void *value, size_t value_len,
- struct page *ipage)
+static int __f2fs_setxattr(struct inode *inode, int index,
+ const char *name, const void *value, size_t size,
+ struct page *ipage, int flags)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
struct f2fs_xattr_entry *here, *last;
void *base_addr;
int found, newsize;
- size_t name_len;
+ size_t len;
__u32 new_hsize;
int error = -ENOMEM;
@@ -491,11 +493,11 @@ static int __f2fs_setxattr(struct inode *inode, int name_index,
return -EINVAL;
if (value == NULL)
- value_len = 0;
+ size = 0;
- name_len = strlen(name);
+ len = strlen(name);
- if (name_len > F2FS_NAME_LEN || value_len > MAX_VALUE_LEN(inode))
+ if (len > F2FS_NAME_LEN || size > MAX_VALUE_LEN(inode))
return -ERANGE;
base_addr = read_all_xattrs(inode, ipage);
@@ -503,16 +505,23 @@ static int __f2fs_setxattr(struct inode *inode, int name_index,
goto exit;
/* find entry with wanted name. */
- here = __find_xattr(base_addr, name_index, name_len, name);
+ here = __find_xattr(base_addr, index, len, name);
found = IS_XATTR_LAST_ENTRY(here) ? 0 : 1;
- last = here;
+ if ((flags & XATTR_REPLACE) && !found) {
+ error = -ENODATA;
+ goto exit;
+ } else if ((flags & XATTR_CREATE) && found) {
+ error = -EEXIST;
+ goto exit;
+ }
+
+ last = here;
while (!IS_XATTR_LAST_ENTRY(last))
last = XATTR_NEXT_ENTRY(last);
- newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) +
- name_len + value_len);
+ newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) + len + size);
/* 1. Check space */
if (value) {
@@ -555,12 +564,12 @@ static int __f2fs_setxattr(struct inode *inode, int name_index,
* We just write new entry.
*/
memset(last, 0, newsize);
- last->e_name_index = name_index;
- last->e_name_len = name_len;
- memcpy(last->e_name, name, name_len);
- pval = last->e_name + name_len;
- memcpy(pval, value, value_len);
- last->e_value_size = cpu_to_le16(value_len);
+ last->e_name_index = index;
+ last->e_name_len = len;
+ memcpy(last->e_name, name, len);
+ pval = last->e_name + len;
+ memcpy(pval, value, size);
+ last->e_value_size = cpu_to_le16(size);
new_hsize += newsize;
}
@@ -583,18 +592,23 @@ exit:
return error;
}
-int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
- const void *value, size_t value_len, struct page *ipage)
+int f2fs_setxattr(struct inode *inode, int index, const char *name,
+ const void *value, size_t size,
+ struct page *ipage, int flags)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
int err;
+ /* this case is only from init_inode_metadata */
+ if (ipage)
+ return __f2fs_setxattr(inode, index, name, value,
+ size, ipage, flags);
f2fs_balance_fs(sbi);
f2fs_lock_op(sbi);
/* protect xattr_ver */
down_write(&F2FS_I(inode)->i_sem);
- err = __f2fs_setxattr(inode, name_index, name, value, value_len, ipage);
+ err = __f2fs_setxattr(inode, index, name, value, size, ipage, flags);
up_write(&F2FS_I(inode)->i_sem);
f2fs_unlock_op(sbi);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 11:01:51 +0000