From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/fs/xfs/libxfs/xfs_attr.h | 118 ++++++++++++++++-------------------------------------------
1 files changed, 32 insertions(+), 86 deletions(-)
diff --git a/kernel/fs/xfs/libxfs/xfs_attr.h b/kernel/fs/xfs/libxfs/xfs_attr.h
index cc04ee0..3e97a93 100644
--- a/kernel/fs/xfs/libxfs/xfs_attr.h
+++ b/kernel/fs/xfs/libxfs/xfs_attr.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2000,2002-2003,2005 Silicon Graphics, Inc.
* All Rights Reserved.
@@ -21,34 +21,6 @@
* as possible so as to fit into the literal area of the inode.
*/
-/*========================================================================
- * External interfaces
- *========================================================================*/
-
-
-#define ATTR_DONTFOLLOW 0x0001 /* -- unused, from IRIX -- */
-#define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */
-#define ATTR_TRUST 0x0004 /* -- unused, from IRIX -- */
-#define ATTR_SECURE 0x0008 /* use attrs in security namespace */
-#define ATTR_CREATE 0x0010 /* pure create: fail if attr already exists */
-#define ATTR_REPLACE 0x0020 /* pure set: fail if attr does not exist */
-
-#define ATTR_KERNOTIME 0x1000 /* [kernel] don't update inode timestamps */
-#define ATTR_KERNOVAL 0x2000 /* [kernel] get attr size only, not value */
-
-#define ATTR_INCOMPLETE 0x4000 /* [kernel] return INCOMPLETE attr keys */
-
-#define XFS_ATTR_FLAGS \
- { ATTR_DONTFOLLOW, "DONTFOLLOW" }, \
- { ATTR_ROOT, "ROOT" }, \
- { ATTR_TRUST, "TRUST" }, \
- { ATTR_SECURE, "SECURE" }, \
- { ATTR_CREATE, "CREATE" }, \
- { ATTR_REPLACE, "REPLACE" }, \
- { ATTR_KERNOTIME, "KERNOTIME" }, \
- { ATTR_KERNOVAL, "KERNOVAL" }, \
- { ATTR_INCOMPLETE, "INCOMPLETE" }
-
/*
* The maximum size (into the kernel or returned from the kernel) of an
* attribute value or the buffer used for an attr_list() call. Larger
@@ -57,45 +29,16 @@
#define ATTR_MAX_VALUELEN (64*1024) /* max length of a value */
/*
- * Define how lists of attribute names are returned to the user from
- * the attr_list() call. A large, 32bit aligned, buffer is passed in
- * along with its size. We put an array of offsets at the top that each
- * reference an attrlist_ent_t and pack the attrlist_ent_t's at the bottom.
- */
-typedef struct attrlist {
- __s32 al_count; /* number of entries in attrlist */
- __s32 al_more; /* T/F: more attrs (do call again) */
- __s32 al_offset[1]; /* byte offsets of attrs [var-sized] */
-} attrlist_t;
-
-/*
- * Show the interesting info about one attribute. This is what the
- * al_offset[i] entry points to.
- */
-typedef struct attrlist_ent { /* data from attr_list() */
- __u32 a_valuelen; /* number bytes in value of attr */
- char a_name[1]; /* attr name (NULL terminated) */
-} attrlist_ent_t;
-
-/*
- * Given a pointer to the (char*) buffer containing the attr_list() result,
- * and an index, return a pointer to the indicated attribute in the buffer.
- */
-#define ATTR_ENTRY(buffer, index) \
- ((attrlist_ent_t *) \
- &((char *)buffer)[ ((attrlist_t *)(buffer))->al_offset[index] ])
-
-/*
* Kernel-internal version of the attrlist cursor.
*/
-typedef struct attrlist_cursor_kern {
+struct xfs_attrlist_cursor_kern {
__u32 hashval; /* hash value of next entry to add */
__u32 blkno; /* block containing entry (suggestion) */
__u32 offset; /* offset in list of equal-hashvals */
__u16 pad1; /* padding to match user-level */
__u8 pad2; /* padding to match user-level */
__u8 initted; /* T/F: cursor has been initialized */
-} attrlist_cursor_kern_t;
+};
/*========================================================================
@@ -107,21 +50,28 @@
typedef void (*put_listent_func_t)(struct xfs_attr_list_context *, int,
unsigned char *, int, int);
-typedef struct xfs_attr_list_context {
- struct xfs_trans *tp;
- struct xfs_inode *dp; /* inode */
- struct attrlist_cursor_kern *cursor; /* position in list */
- char *alist; /* output buffer */
- int seen_enough; /* T/F: seen enough of list? */
- ssize_t count; /* num used entries */
- int dupcnt; /* count dup hashvals seen */
- int bufsize; /* total buffer size */
- int firstu; /* first used byte in buffer */
- int flags; /* from VOP call */
- int resynch; /* T/F: resynch with cursor */
- put_listent_func_t put_listent; /* list output fmt function */
- int index; /* index into output buffer */
-} xfs_attr_list_context_t;
+struct xfs_attr_list_context {
+ struct xfs_trans *tp;
+ struct xfs_inode *dp; /* inode */
+ struct xfs_attrlist_cursor_kern cursor; /* position in list */
+ void *buffer; /* output buffer */
+
+ /*
+ * Abort attribute list iteration if non-zero. Can be used to pass
+ * error values to the xfs_attr_list caller.
+ */
+ int seen_enough;
+ bool allow_incomplete;
+
+ ssize_t count; /* num used entries */
+ int dupcnt; /* count dup hashvals seen */
+ int bufsize; /* total buffer size */
+ int firstu; /* first used byte in buffer */
+ unsigned int attr_filter; /* XFS_ATTR_{ROOT,SECURE} */
+ int resynch; /* T/F: resynch with cursor */
+ put_listent_func_t put_listent; /* list output fmt function */
+ int index; /* index into output buffer */
+};
/*========================================================================
@@ -132,19 +82,15 @@
* Overall external interface routines.
*/
int xfs_attr_inactive(struct xfs_inode *dp);
-int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *);
-int xfs_attr_list_int(struct xfs_attr_list_context *);
+int xfs_attr_list_ilocked(struct xfs_attr_list_context *);
+int xfs_attr_list(struct xfs_attr_list_context *);
int xfs_inode_hasattr(struct xfs_inode *ip);
-int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
-int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
- unsigned char *value, int *valuelenp, int flags);
-int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
- unsigned char *value, int valuelen, int flags);
+int xfs_attr_get_ilocked(struct xfs_da_args *args);
+int xfs_attr_get(struct xfs_da_args *args);
+int xfs_attr_set(struct xfs_da_args *args);
int xfs_attr_set_args(struct xfs_da_args *args);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
+int xfs_has_attr(struct xfs_da_args *args);
int xfs_attr_remove_args(struct xfs_da_args *args);
-int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
- int flags, struct attrlist_cursor_kern *cursor);
-
+bool xfs_attr_namecheck(const void *name, size_t length);
#endif /* __XFS_ATTR_H__ */
--
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