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Message-Id: <20230323000949.57608-2-jefflexu@linux.alibaba.com>
Date: Thu, 23 Mar 2023 08:09:42 +0800
From: Jingbo Xu <jefflexu@...ux.alibaba.com>
To: xiang@...nel.org, chao@...nel.org, huyue2@...lpad.com,
linux-erofs@...ts.ozlabs.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 1/8] erofs: move several xattr helpers into xattr.c
There are several xattr helpers not used outside xattr.c, thus move them
into xattr.c as a cleanup.
inlinexattr_header_size() has only one caller, and thus make it inlined
into the caller directly.
Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
---
fs/erofs/xattr.c | 73 +++++++++++++++++++++++++++++++++---------------
fs/erofs/xattr.h | 56 -------------------------------------
2 files changed, 51 insertions(+), 78 deletions(-)
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index 459caa3cd65d..760ec864a39c 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -7,6 +7,19 @@
#include <linux/security.h>
#include "xattr.h"
+static inline erofs_blk_t erofs_xattr_blkaddr(struct super_block *sb,
+ unsigned int xattr_id)
+{
+ return EROFS_SB(sb)->xattr_blkaddr +
+ erofs_blknr(sb, xattr_id * sizeof(__u32));
+}
+
+static inline unsigned int erofs_xattr_blkoff(struct super_block *sb,
+ unsigned int xattr_id)
+{
+ return erofs_blkoff(sb, xattr_id * sizeof(__u32));
+}
+
struct xattr_iter {
struct super_block *sb;
struct erofs_buf buf;
@@ -157,7 +170,8 @@ static int inline_xattr_iter_begin(struct xattr_iter *it,
struct erofs_inode *const vi = EROFS_I(inode);
unsigned int xattr_header_sz, inline_xattr_ofs;
- xattr_header_sz = inlinexattr_header_size(inode);
+ xattr_header_sz = sizeof(struct erofs_xattr_ibody_header) +
+ sizeof(u32) * vi->xattr_shared_count;
if (xattr_header_sz >= vi->xattr_isize) {
DBG_BUGON(xattr_header_sz > vi->xattr_isize);
return -ENOATTR;
@@ -351,20 +365,18 @@ static int inline_getxattr(struct inode *inode, struct getxattr_iter *it)
static int shared_getxattr(struct inode *inode, struct getxattr_iter *it)
{
struct erofs_inode *const vi = EROFS_I(inode);
- struct super_block *const sb = inode->i_sb;
- unsigned int i;
+ struct super_block *const sb = it->it.sb;
+ unsigned int i, xsid;
int ret = -ENOATTR;
for (i = 0; i < vi->xattr_shared_count; ++i) {
- erofs_blk_t blkaddr =
- xattrblock_addr(sb, vi->xattr_shared_xattrs[i]);
-
- it->it.ofs = xattrblock_offset(sb, vi->xattr_shared_xattrs[i]);
- it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb, blkaddr,
- EROFS_KMAP);
+ xsid = vi->xattr_shared_xattrs[i];
+ it->it.blkaddr = erofs_xattr_blkaddr(sb, xsid);
+ it->it.ofs = erofs_xattr_blkoff(sb, xsid);
+ it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb,
+ it->it.blkaddr, EROFS_KMAP);
if (IS_ERR(it->it.kaddr))
return PTR_ERR(it->it.kaddr);
- it->it.blkaddr = blkaddr;
ret = xattr_foreach(&it->it, &find_xattr_handlers, NULL);
if (ret != -ENOATTR)
@@ -383,9 +395,8 @@ static bool erofs_xattr_trusted_list(struct dentry *dentry)
return capable(CAP_SYS_ADMIN);
}
-int erofs_getxattr(struct inode *inode, int index,
- const char *name,
- void *buffer, size_t buffer_size)
+static int erofs_getxattr(struct inode *inode, int index, const char *name,
+ void *buffer, size_t buffer_size)
{
int ret;
struct getxattr_iter it;
@@ -473,6 +484,26 @@ const struct xattr_handler *erofs_xattr_handlers[] = {
NULL,
};
+static inline const struct xattr_handler *erofs_xattr_handler(unsigned int idx)
+{
+ static const struct xattr_handler *xattr_handler_map[] = {
+ [EROFS_XATTR_INDEX_USER] = &erofs_xattr_user_handler,
+#ifdef CONFIG_EROFS_FS_POSIX_ACL
+ [EROFS_XATTR_INDEX_POSIX_ACL_ACCESS] =
+ &posix_acl_access_xattr_handler,
+ [EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT] =
+ &posix_acl_default_xattr_handler,
+#endif
+ [EROFS_XATTR_INDEX_TRUSTED] = &erofs_xattr_trusted_handler,
+#ifdef CONFIG_EROFS_FS_SECURITY
+ [EROFS_XATTR_INDEX_SECURITY] = &erofs_xattr_security_handler,
+#endif
+ };
+
+ return idx && idx < ARRAY_SIZE(xattr_handler_map) ?
+ xattr_handler_map[idx] : NULL;
+}
+
struct listxattr_iter {
struct xattr_iter it;
@@ -562,20 +593,18 @@ static int shared_listxattr(struct listxattr_iter *it)
{
struct inode *const inode = d_inode(it->dentry);
struct erofs_inode *const vi = EROFS_I(inode);
- struct super_block *const sb = inode->i_sb;
- unsigned int i;
+ struct super_block *const sb = it->it.sb;
+ unsigned int i, xsid;
int ret = 0;
for (i = 0; i < vi->xattr_shared_count; ++i) {
- erofs_blk_t blkaddr =
- xattrblock_addr(sb, vi->xattr_shared_xattrs[i]);
-
- it->it.ofs = xattrblock_offset(sb, vi->xattr_shared_xattrs[i]);
- it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb, blkaddr,
- EROFS_KMAP);
+ xsid = vi->xattr_shared_xattrs[i];
+ it->it.blkaddr = erofs_xattr_blkaddr(sb, xsid);
+ it->it.ofs = erofs_xattr_blkoff(sb, xsid);
+ it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb,
+ it->it.blkaddr, EROFS_KMAP);
if (IS_ERR(it->it.kaddr))
return PTR_ERR(it->it.kaddr);
- it->it.blkaddr = blkaddr;
ret = xattr_foreach(&it->it, &list_xattr_handlers, NULL);
if (ret)
diff --git a/fs/erofs/xattr.h b/fs/erofs/xattr.h
index f7a21aaa9755..cc9ef97dbf8e 100644
--- a/fs/erofs/xattr.h
+++ b/fs/erofs/xattr.h
@@ -13,66 +13,10 @@
/* Attribute not found */
#define ENOATTR ENODATA
-static inline unsigned int inlinexattr_header_size(struct inode *inode)
-{
- return sizeof(struct erofs_xattr_ibody_header) +
- sizeof(u32) * EROFS_I(inode)->xattr_shared_count;
-}
-
-static inline erofs_blk_t xattrblock_addr(struct super_block *sb,
- unsigned int xattr_id)
-{
#ifdef CONFIG_EROFS_FS_XATTR
- return EROFS_SB(sb)->xattr_blkaddr +
- xattr_id * sizeof(__u32) / sb->s_blocksize;
-#else
- return 0;
-#endif
-}
-
-static inline unsigned int xattrblock_offset(struct super_block *sb,
- unsigned int xattr_id)
-{
- return (xattr_id * sizeof(__u32)) % sb->s_blocksize;
-}
-
-#ifdef CONFIG_EROFS_FS_XATTR
-extern const struct xattr_handler erofs_xattr_user_handler;
-extern const struct xattr_handler erofs_xattr_trusted_handler;
-extern const struct xattr_handler erofs_xattr_security_handler;
-
-static inline const struct xattr_handler *erofs_xattr_handler(unsigned int idx)
-{
- static const struct xattr_handler *xattr_handler_map[] = {
- [EROFS_XATTR_INDEX_USER] = &erofs_xattr_user_handler,
-#ifdef CONFIG_EROFS_FS_POSIX_ACL
- [EROFS_XATTR_INDEX_POSIX_ACL_ACCESS] =
- &posix_acl_access_xattr_handler,
- [EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT] =
- &posix_acl_default_xattr_handler,
-#endif
- [EROFS_XATTR_INDEX_TRUSTED] = &erofs_xattr_trusted_handler,
-#ifdef CONFIG_EROFS_FS_SECURITY
- [EROFS_XATTR_INDEX_SECURITY] = &erofs_xattr_security_handler,
-#endif
- };
-
- return idx && idx < ARRAY_SIZE(xattr_handler_map) ?
- xattr_handler_map[idx] : NULL;
-}
-
extern const struct xattr_handler *erofs_xattr_handlers[];
-
-int erofs_getxattr(struct inode *, int, const char *, void *, size_t);
ssize_t erofs_listxattr(struct dentry *, char *, size_t);
#else
-static inline int erofs_getxattr(struct inode *inode, int index,
- const char *name, void *buffer,
- size_t buffer_size)
-{
- return -EOPNOTSUPP;
-}
-
#define erofs_listxattr (NULL)
#define erofs_xattr_handlers (NULL)
#endif /* !CONFIG_EROFS_FS_XATTR */
--
2.19.1.6.gb485710b
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