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Diffstat (limited to 'fs/jffs2/xattr.c')
-rw-r--r--fs/jffs2/xattr.c74
1 files changed, 46 insertions, 28 deletions
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 4da09ce1d1f..ad0f2e2a170 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1,13 +1,18 @@
/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
- * Copyright (C) 2006 NEC Corporation
+ * Copyright © 2006 NEC Corporation
*
* Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define JFFS2_XATTR_IS_CORRUPTED 1
+
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
@@ -17,6 +22,7 @@
#include <linux/crc32.h>
#include <linux/jffs2.h>
#include <linux/xattr.h>
+#include <linux/posix_acl_xattr.h>
#include <linux/mtd/mtd.h>
#include "nodelist.h"
/* -------- xdatum related functions ----------------
@@ -30,7 +36,7 @@
* is used to release xattr name/value pair and detach from c->xattrindex.
* reclaim_xattr_datum(c)
* is used to reclaim xattr name/value pairs on the xattr name/value pair cache when
- * memory usage by cache is over c->xdatum_mem_threshold. Currentry, this threshold
+ * memory usage by cache is over c->xdatum_mem_threshold. Currently, this threshold
* is hard coded as 32KiB.
* do_verify_xattr_datum(c, xd)
* is used to load the xdatum informations without name/value pair from the medium.
@@ -81,7 +87,7 @@ static int is_xattr_datum_unchecked(struct jffs2_sb_info *c, struct jffs2_xattr_
static void unload_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd)
{
/* must be called under down_write(xattr_sem) */
- D1(dbg_xattr("%s: xid=%u, version=%u\n", __FUNCTION__, xd->xid, xd->version));
+ D1(dbg_xattr("%s: xid=%u, version=%u\n", __func__, xd->xid, xd->version));
if (xd->xname) {
c->xdatum_mem_usage -= (xd->name_len + 1 + xd->value_len);
kfree(xd->xname);
@@ -150,7 +156,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
offset, je32_to_cpu(rx.hdr_crc), crc);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
}
totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len));
if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK
@@ -166,7 +172,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
je32_to_cpu(rx.xid), xd->xid,
je32_to_cpu(rx.version), xd->version);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
}
xd->xprefix = rx.xprefix;
xd->name_len = rx.name_len;
@@ -224,12 +230,12 @@ static int do_load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum
data[xd->name_len] = '\0';
crc = crc32(0, data, length);
if (crc != xd->data_crc) {
- JFFS2_WARNING("node CRC failed (JFFS2_NODETYPE_XREF)"
+ JFFS2_WARNING("node CRC failed (JFFS2_NODETYPE_XATTR)"
" at %#08x, read: 0x%08x calculated: 0x%08x\n",
ref_offset(xd->node), xd->data_crc, crc);
kfree(data);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
}
xd->flags |= JFFS2_XFLAGS_HOT;
@@ -267,7 +273,7 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
if (xd->xname)
return 0;
if (xd->flags & JFFS2_XFLAGS_INVALID)
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
if (unlikely(is_xattr_datum_unchecked(c, xd)))
rc = do_verify_xattr_datum(c, xd);
if (!rc)
@@ -399,8 +405,6 @@ static void unrefer_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datu
{
/* must be called under down_write(xattr_sem) */
if (atomic_dec_and_lock(&xd->refcnt, &c->erase_completion_lock)) {
- uint32_t xid = xd->xid, version = xd->version;
-
unload_xattr_datum(c, xd);
xd->flags |= JFFS2_XFLAGS_DEAD;
if (xd->node == (void *)xd) {
@@ -411,7 +415,8 @@ static void unrefer_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datu
}
spin_unlock(&c->erase_completion_lock);
- dbg_xattr("xdatum(xid=%u, version=%u) was removed.\n", xid, version);
+ dbg_xattr("xdatum(xid=%u, version=%u) was removed.\n",
+ xd->xid, xd->version);
}
}
@@ -433,6 +438,8 @@ static void unrefer_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datu
* is called to release xattr related objects when unmounting.
* check_xattr_ref_inode(c, ic)
* is used to confirm inode does not have duplicate xattr name/value pair.
+ * jffs2_xattr_do_crccheck_inode(c, ic)
+ * is used to force xattr data integrity check during the initial gc scan.
* -------------------------------------------------- */
static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
{
@@ -460,7 +467,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
if (crc != je32_to_cpu(rr.node_crc)) {
JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
offset, je32_to_cpu(rr.node_crc), crc);
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
}
if (je16_to_cpu(rr.magic) != JFFS2_MAGIC_BITMASK
|| je16_to_cpu(rr.nodetype) != JFFS2_NODETYPE_XREF
@@ -470,7 +477,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
offset, je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK,
je16_to_cpu(rr.nodetype), JFFS2_NODETYPE_XREF,
je32_to_cpu(rr.totlen), PAD(sizeof(rr)));
- return EIO;
+ return JFFS2_XATTR_IS_CORRUPTED;
}
ref->ino = je32_to_cpu(rr.ino);
ref->xid = je32_to_cpu(rr.xid);
@@ -588,11 +595,11 @@ static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *re
void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
{
- /* It's called from jffs2_clear_inode() on inode removing.
+ /* It's called from jffs2_evict_inode() on inode removing.
When an inode with XATTR is removed, those XATTRs must be removed. */
struct jffs2_xattr_ref *ref, *_ref;
- if (!ic || ic->nlink > 0)
+ if (!ic || ic->pino_nlink > 0)
return;
down_write(&c->xattr_sem);
@@ -626,7 +633,7 @@ void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *i
static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
{
- /* success of check_xattr_ref_inode() means taht inode (ic) dose not have
+ /* success of check_xattr_ref_inode() means that inode (ic) dose not have
* duplicate name/value pairs. If duplicate name/value pair would be found,
* one will be removed.
*/
@@ -680,6 +687,11 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac
return rc;
}
+void jffs2_xattr_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
+{
+ check_xattr_ref_inode(c, ic);
+}
+
/* -------- xattr subsystem functions ---------------
* jffs2_init_xattr_subsystem(c)
* is used to initialize semaphore and list_head, and some variables.
@@ -754,6 +766,10 @@ void jffs2_clear_xattr_subsystem(struct jffs2_sb_info *c)
list_del(&xd->xindex);
jffs2_free_xattr_datum(xd);
}
+ list_for_each_entry_safe(xd, _xd, &c->xattr_unchecked, xindex) {
+ list_del(&xd->xindex);
+ jffs2_free_xattr_datum(xd);
+ }
}
#define XREF_TMPHASH_SIZE (128)
@@ -825,7 +841,7 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c)
ref->xd and ref->ic are not valid yet. */
xd = jffs2_find_xattr_datum(c, ref->xid);
ic = jffs2_get_ino_cache(c, ref->ino);
- if (!xd || !ic) {
+ if (!xd || !ic || !ic->pino_nlink) {
dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) is orphan.\n",
ref->ino, ref->xid, ref->xseqno);
ref->xseqno |= XREF_DELETE_MARKER;
@@ -900,21 +916,21 @@ struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c,
* do_jffs2_setxattr(inode, xprefix, xname, buffer, size, flags)
* is an implementation of setxattr handler on jffs2.
* -------------------------------------------------- */
-struct xattr_handler *jffs2_xattr_handlers[] = {
+const struct xattr_handler *jffs2_xattr_handlers[] = {
&jffs2_user_xattr_handler,
#ifdef CONFIG_JFFS2_FS_SECURITY
&jffs2_security_xattr_handler,
#endif
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
- &jffs2_acl_access_xattr_handler,
- &jffs2_acl_default_xattr_handler,
+ &posix_acl_access_xattr_handler,
+ &posix_acl_default_xattr_handler,
#endif
&jffs2_trusted_xattr_handler,
NULL
};
-static struct xattr_handler *xprefix_to_handler(int xprefix) {
- struct xattr_handler *ret;
+static const struct xattr_handler *xprefix_to_handler(int xprefix) {
+ const struct xattr_handler *ret;
switch (xprefix) {
case JFFS2_XPREFIX_USER:
@@ -927,10 +943,10 @@ static struct xattr_handler *xprefix_to_handler(int xprefix) {
#endif
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
case JFFS2_XPREFIX_ACL_ACCESS:
- ret = &jffs2_acl_access_xattr_handler;
+ ret = &posix_acl_access_xattr_handler;
break;
case JFFS2_XPREFIX_ACL_DEFAULT:
- ret = &jffs2_acl_default_xattr_handler;
+ ret = &posix_acl_default_xattr_handler;
break;
#endif
case JFFS2_XPREFIX_TRUSTED:
@@ -951,7 +967,7 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
struct jffs2_inode_cache *ic = f->inocache;
struct jffs2_xattr_ref *ref, **pref;
struct jffs2_xattr_datum *xd;
- struct xattr_handler *xhandle;
+ const struct xattr_handler *xhandle;
ssize_t len, rc;
int retry = 0;
@@ -986,9 +1002,11 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
if (!xhandle)
continue;
if (buffer) {
- rc = xhandle->list(inode, buffer+len, size-len, xd->xname, xd->name_len);
+ rc = xhandle->list(dentry, buffer+len, size-len,
+ xd->xname, xd->name_len, xd->flags);
} else {
- rc = xhandle->list(inode, NULL, 0, xd->xname, xd->name_len);
+ rc = xhandle->list(dentry, NULL, 0, xd->xname,
+ xd->name_len, xd->flags);
}
if (rc < 0)
goto out;
@@ -1248,7 +1266,7 @@ int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_
rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XREF_SIZE);
if (rc) {
JFFS2_WARNING("%s: jffs2_reserve_space_gc() = %d, request = %u\n",
- __FUNCTION__, rc, totlen);
+ __func__, rc, totlen);
rc = rc ? rc : -EBADFD;
goto out;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 14:27:15 +0000