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-rw-r--r--fs/ubifs/debug.c105
-rw-r--r--fs/ubifs/debug.h31
-rw-r--r--fs/ubifs/io.c8
3 files changed, 39 insertions, 105 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 3a7344124f30..1e880cedefa4 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2539,16 +2539,7 @@ error_dump:
#define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
-struct failure_mode_info {
- struct list_head list;
- struct ubifs_info *c;
-};
-
-static LIST_HEAD(fmi_list);
-static DEFINE_SPINLOCK(fmi_lock);
-
static unsigned int next;
-
static int simple_rand(void)
{
if (next == 0)
@@ -2557,69 +2548,15 @@ static int simple_rand(void)
return (next >> 16) & 32767;
}
-static void failure_mode_init(struct ubifs_info *c)
-{
- struct failure_mode_info *fmi;
-
- fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
- if (!fmi) {
- ubifs_err("Failed to register failure mode - no memory");
- return;
- }
- fmi->c = c;
- spin_lock(&fmi_lock);
- list_add_tail(&fmi->list, &fmi_list);
- spin_unlock(&fmi_lock);
-}
-
-static void failure_mode_exit(struct ubifs_info *c)
-{
- struct failure_mode_info *fmi, *tmp;
-
- spin_lock(&fmi_lock);
- list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
- if (fmi->c == c) {
- list_del(&fmi->list);
- kfree(fmi);
- }
- spin_unlock(&fmi_lock);
-}
-
-static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
+static int do_fail(struct ubifs_info *c, int lnum, int write)
{
- struct failure_mode_info *fmi;
-
- spin_lock(&fmi_lock);
- list_for_each_entry(fmi, &fmi_list, list)
- if (fmi->c->ubi == desc) {
- struct ubifs_info *c = fmi->c;
-
- spin_unlock(&fmi_lock);
- return c;
- }
- spin_unlock(&fmi_lock);
- return NULL;
-}
-
-static int in_failure_mode(struct ubi_volume_desc *desc)
-{
- struct ubifs_info *c = dbg_find_info(desc);
+ struct ubifs_debug_info *d = c->dbg;
- if (c && dbg_is_tst_rcvry(c))
- return c->dbg->failure_mode;
- return 0;
-}
+ ubifs_assert(dbg_is_tst_rcvry(c));
-static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
-{
- struct ubifs_info *c = dbg_find_info(desc);
- struct ubifs_debug_info *d;
-
- if (!c || !dbg_is_tst_rcvry(c))
- return 0;
- d = c->dbg;
if (d->failure_mode)
return 1;
+
if (!d->fail_cnt) {
/* First call - decide delay to failure */
if (chance(1, 2)) {
@@ -2716,17 +2653,17 @@ static void cut_data(const void *buf, int len)
p[i] = 0xff;
}
-int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
+int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf,
int offs, int len, int dtype)
{
int err, failing;
- if (in_failure_mode(desc))
+ if (c->dbg->failure_mode)
return -EROFS;
- failing = do_fail(desc, lnum, 1);
+ failing = do_fail(c, lnum, 1);
if (failing)
cut_data(buf, len);
- err = ubi_leb_write(desc, lnum, buf, offs, len, dtype);
+ err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
if (err)
return err;
if (failing)
@@ -2734,45 +2671,45 @@ int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
return 0;
}
-int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
+int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf,
int len, int dtype)
{
int err;
- if (do_fail(desc, lnum, 1))
+ if (do_fail(c, lnum, 1))
return -EROFS;
- err = ubi_leb_change(desc, lnum, buf, len, dtype);
+ err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
if (err)
return err;
- if (do_fail(desc, lnum, 1))
+ if (do_fail(c, lnum, 1))
return -EROFS;
return 0;
}
-int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
+int dbg_leb_unmap(struct ubifs_info *c, int lnum)
{
int err;
- if (do_fail(desc, lnum, 0))
+ if (do_fail(c, lnum, 0))
return -EROFS;
- err = ubi_leb_unmap(desc, lnum);
+ err = ubi_leb_unmap(c->ubi, lnum);
if (err)
return err;
- if (do_fail(desc, lnum, 0))
+ if (do_fail(c, lnum, 0))
return -EROFS;
return 0;
}
-int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
+int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype)
{
int err;
- if (do_fail(desc, lnum, 0))
+ if (do_fail(c, lnum, 0))
return -EROFS;
- err = ubi_leb_map(desc, lnum, dtype);
+ err = ubi_leb_map(c->ubi, lnum, dtype);
if (err)
return err;
- if (do_fail(desc, lnum, 0))
+ if (do_fail(c, lnum, 0))
return -EROFS;
return 0;
}
@@ -3210,7 +3147,6 @@ int ubifs_debugging_init(struct ubifs_info *c)
if (!c->dbg)
return -ENOMEM;
- failure_mode_init(c);
return 0;
}
@@ -3220,7 +3156,6 @@ int ubifs_debugging_init(struct ubifs_info *c)
*/
void ubifs_debugging_exit(struct ubifs_info *c)
{
- failure_mode_exit(c);
kfree(c->dbg);
}
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index b5bc09deeb32..0ab3757ef0e3 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -305,12 +305,12 @@ int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode,
int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head);
int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head);
-int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int offs, int len, int dtype);
-int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int len, int dtype);
-int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
-int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
+int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
+ int len, int dtype);
+int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
+ int dtype);
+int dbg_leb_unmap(struct ubifs_info *c, int lnum);
+int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype);
/* Debugfs-related stuff */
int dbg_debugfs_init(void);
@@ -442,16 +442,15 @@ static inline int
dbg_check_nondata_nodes_order(struct ubifs_info *c,
struct list_head *head) { return 0; }
-static inline int dbg_leb_write(struct ubi_volume_desc *desc,
- int lnum, const void *buf,
- int offset, int len, int dtype) { return 0; }
-static inline int dbg_leb_change(struct ubi_volume_desc *desc,
- int lnum, const void *buf,
- int len, int dtype) { return 0; }
-static inline int dbg_leb_unmap(struct ubi_volume_desc *desc,
- int lnum) { return 0; }
-static inline int dbg_leb_map(struct ubi_volume_desc *desc,
- int lnum, int dtype) { return 0; }
+static inline int dbg_leb_write(struct ubifs_info *c, int lnum,
+ const void *buf, int offset,
+ int len, int dtype) { return 0; }
+static inline int dbg_leb_change(struct ubifs_info *c, int lnum,
+ const void *buf, int len,
+ int dtype) { return 0; }
+static inline int dbg_leb_unmap(struct ubifs_info *c, int lnum) { return 0; }
+static inline int dbg_leb_map(struct ubifs_info *c, int lnum,
+ int dtype) { return 0; }
static inline int dbg_is_chk_gen(const struct ubifs_info *c) { return 0; }
static inline int dbg_is_chk_index(const struct ubifs_info *c) { return 0; }
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index a0c5fb4b6fa8..9228950a658f 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -125,7 +125,7 @@ int ubifs_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs,
if (!dbg_is_tst_rcvry(c))
err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
else
- err = dbg_leb_write(c->ubi, lnum, buf, offs, len, dtype);
+ err = dbg_leb_write(c, lnum, buf, offs, len, dtype);
if (err) {
ubifs_err("writing %d bytes to LEB %d:%d failed, error %d",
len, lnum, offs, err);
@@ -146,7 +146,7 @@ int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len,
if (!dbg_is_tst_rcvry(c))
err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
else
- err = dbg_leb_change(c->ubi, lnum, buf, len, dtype);
+ err = dbg_leb_change(c, lnum, buf, len, dtype);
if (err) {
ubifs_err("changing %d bytes in LEB %d failed, error %d",
len, lnum, err);
@@ -166,7 +166,7 @@ int ubifs_leb_unmap(struct ubifs_info *c, int lnum)
if (!dbg_is_tst_rcvry(c))
err = ubi_leb_unmap(c->ubi, lnum);
else
- err = dbg_leb_unmap(c->ubi, lnum);
+ err = dbg_leb_unmap(c, lnum);
if (err) {
ubifs_err("unmap LEB %d failed, error %d", lnum, err);
ubifs_ro_mode(c, err);
@@ -185,7 +185,7 @@ int ubifs_leb_map(struct ubifs_info *c, int lnum, int dtype)
if (!dbg_is_tst_rcvry(c))
err = ubi_leb_map(c->ubi, lnum, dtype);
else
- err = dbg_leb_map(c->ubi, lnum, dtype);
+ err = dbg_leb_map(c, lnum, dtype);
if (err) {
ubifs_err("mapping LEB %d failed, error %d", lnum, err);
ubifs_ro_mode(c, err);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 12:53:33 +0000