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-rw-r--r--fs/jffs2/jffs2_1pass.c154
-rw-r--r--fs/jffs2/jffs2_private.h5
2 files changed, 81 insertions, 78 deletions
diff --git a/fs/jffs2/jffs2_1pass.c b/fs/jffs2/jffs2_1pass.c
index 68db8c3..1115c86 100644
--- a/fs/jffs2/jffs2_1pass.c
+++ b/fs/jffs2/jffs2_1pass.c
@@ -549,7 +549,7 @@ add_node(struct b_list *list)
}
static struct b_node *
-insert_node(struct b_list *list, u32 offset)
+insert_node(struct b_list *list)
{
struct b_node *new;
@@ -557,7 +557,6 @@ insert_node(struct b_list *list, u32 offset)
putstr("add_node failed!\r\n");
return NULL;
}
- new->offset = offset;
new->next = NULL;
if (list->listTail != NULL)
@@ -575,18 +574,7 @@ insert_node(struct b_list *list, u32 offset)
*/
static int compare_inodes(struct b_node *new, struct b_node *old)
{
- /*
- * Only read in the version info from flash, not the entire inode.
- * This can make a big difference to speed if flash is slow.
- */
- u32 new_version;
- u32 old_version;
- get_fl_mem(new->offset + offsetof(struct jffs2_raw_inode, version),
- sizeof(new_version), &new_version);
- get_fl_mem(old->offset + offsetof(struct jffs2_raw_inode, version),
- sizeof(old_version), &old_version);
-
- return new_version > old_version;
+ return new->version > old->version;
}
/* Sort directory entries so all entries in the same directory
@@ -683,7 +671,7 @@ jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
uchar *src;
int i;
u32 counter = 0;
-#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
+
/* Find file size before loading any data, so fragments that
* start past the end of file can be ignored. A fragment
* that is partially in the file is loaded, so extra data may
@@ -691,35 +679,40 @@ jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
* This shouldn't cause trouble when loading kernel images, so
* we will live with it.
*/
+ int latestOffset = -1;
for (b = pL->frag.listHead; b != NULL; b = b->next) {
- jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset,
- sizeof(struct jffs2_raw_inode), pL->readbuf);
- if ((inode == jNode->ino)) {
+ if (inode == b->ino) {
/* get actual file length from the newest node */
- if (jNode->version >= latestVersion) {
- totalSize = jNode->isize;
- latestVersion = jNode->version;
+ if (b->version >= latestVersion) {
+ latestVersion = b->version;
+ latestOffset = b->offset;
}
}
+ }
+
+ if (latestOffset >= 0) {
+ jNode = (struct jffs2_raw_inode *)get_fl_mem(latestOffset,
+ sizeof(struct jffs2_raw_inode), pL->readbuf);
+ totalSize = jNode->isize;
put_fl_mem(jNode, pL->readbuf);
}
+
/*
* If no destination is provided, we are done.
* Just return the total size.
*/
if (!dest)
return totalSize;
-#endif
for (b = pL->frag.listHead; b != NULL; b = b->next) {
- /*
- * Copy just the node and not the data at this point,
- * since we don't yet know if we need this data.
- */
- jNode = (struct jffs2_raw_inode *)get_fl_mem(b->offset,
- sizeof(struct jffs2_raw_inode),
- pL->readbuf);
- if (inode == jNode->ino) {
+ if (inode == b->ino) {
+ /*
+ * Copy just the node and not the data at this point,
+ * since we don't yet know if we need this data.
+ */
+ jNode = (struct jffs2_raw_inode *)get_fl_mem(b->offset,
+ sizeof(struct jffs2_raw_inode),
+ pL->readbuf);
#if 0
putLabeledWord("\r\n\r\nread_inode: totlen = ", jNode->totlen);
putLabeledWord("read_inode: inode = ", jNode->ino);
@@ -733,14 +726,6 @@ jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
putLabeledWord("read_inode: flags = ", jNode->flags);
#endif
-#ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
- /* get actual file length from the newest node */
- if (jNode->version >= latestVersion) {
- totalSize = jNode->isize;
- latestVersion = jNode->version;
- }
-#endif
-
if(dest) {
/*
* Now that the inode has been checked,
@@ -804,9 +789,9 @@ jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
#if 0
putLabeledWord("read_inode: totalSize = ", totalSize);
#endif
+ put_fl_mem(jNode, pL->readbuf);
}
counter++;
- put_fl_mem(jNode, pL->readbuf);
}
#if 0
@@ -953,13 +938,14 @@ jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino)
struct jffs2_raw_dirent *jDir;
for (b = pL->dir.listHead; b; b = b->next) {
- jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset,
- pL->readbuf);
- if (pino == jDir->pino) {
+ if (pino == b->pino) {
u32 i_version = 0;
- struct jffs2_raw_inode *jNode, *i = NULL;
+ int i_offset = -1;
+ struct jffs2_raw_inode *jNode = NULL;
struct b_node *b2;
+ jDir = (struct jffs2_raw_dirent *)
+ get_node_mem(b->offset, pL->readbuf);
#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
/* Check for more recent versions of this file */
int match;
@@ -991,30 +977,27 @@ jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino)
}
for (b2 = pL->frag.listHead; b2; b2 = b2->next) {
- jNode = (struct jffs2_raw_inode *)
- get_fl_mem(b2->offset, sizeof(*jNode),
- NULL);
- if (jNode->ino == jDir->ino &&
- jNode->version >= i_version) {
- i_version = jNode->version;
- if (i)
- put_fl_mem(i, NULL);
-
- if (jDir->type == DT_LNK)
- i = get_node_mem(b2->offset,
- NULL);
- else
- i = get_fl_mem(b2->offset,
- sizeof(*i),
- NULL);
+ if (b2->ino == jDir->ino &&
+ b2->version >= i_version) {
+ i_version = b2->version;
+ i_offset = b2->offset;
}
- put_fl_mem(jNode, NULL);
}
- dump_inode(pL, jDir, i);
- put_fl_mem(i, NULL);
+ if (i_version >= 0) {
+ if (jDir->type == DT_LNK)
+ jNode = get_node_mem(i_offset, NULL);
+ else
+ jNode = get_fl_mem(i_offset,
+ sizeof(*jNode),
+ NULL);
+ }
+
+ dump_inode(pL, jDir, jNode);
+ put_fl_mem(jNode, NULL);
+
+ put_fl_mem(jDir, pL->readbuf);
}
- put_fl_mem(jDir, pL->readbuf);
}
return pino;
}
@@ -1266,7 +1249,7 @@ static int jffs2_sum_process_sum_data(struct part_info *part, uint32_t offset,
{
void *sp;
int i, pass;
- void *ret;
+ struct b_node *b;
for (pass = 0; pass < 2; pass++) {
sp = summary->sum;
@@ -1281,13 +1264,17 @@ static int jffs2_sum_process_sum_data(struct part_info *part, uint32_t offset,
if (pass) {
spi = sp;
- ret = insert_node(&pL->frag,
- (u32)part->offset +
+ b = insert_node(&pL->frag);
+ if (!b)
+ return -1;
+ b->offset = (u32)part->offset +
offset +
sum_get_unaligned32(
- &spi->offset));
- if (ret == NULL)
- return -1;
+ &spi->offset);
+ b->version = sum_get_unaligned32(
+ &spi->version);
+ b->ino = sum_get_unaligned32(
+ &spi->inode);
}
sp += JFFS2_SUMMARY_INODE_SIZE;
@@ -1298,13 +1285,17 @@ static int jffs2_sum_process_sum_data(struct part_info *part, uint32_t offset,
struct jffs2_sum_dirent_flash *spd;
spd = sp;
if (pass) {
- ret = insert_node(&pL->dir,
- (u32) part->offset +
+ b = insert_node(&pL->dir);
+ if (!b)
+ return -1;
+ b->offset = (u32)part->offset +
offset +
sum_get_unaligned32(
- &spd->offset));
- if (ret == NULL)
- return -1;
+ &spd->offset);
+ b->version = sum_get_unaligned32(
+ &spd->version);
+ b->pino = sum_get_unaligned32(
+ &spd->pino);
}
sp += JFFS2_SUMMARY_DIRENT_SIZE(
@@ -1508,6 +1499,7 @@ jffs2_1pass_build_lists(struct part_info * part)
/* Indicates a sector with a CLEANMARKER was found */
int clean_sector = 0;
struct jffs2_unknown_node crcnode;
+ struct b_node *b;
/* Set buf_size to maximum length */
buf_size = DEFAULT_EMPTY_SCAN_SIZE;
@@ -1715,12 +1707,15 @@ jffs2_1pass_build_lists(struct part_info * part)
if (!inode_crc((struct jffs2_raw_inode *)node))
break;
- if (insert_node(&pL->frag, (u32) part->offset +
- ofs) == NULL) {
+ b = insert_node(&pL->frag);
+ if (!b) {
free(buf);
jffs2_free_cache(part);
return 0;
}
+ b->offset = (u32)part->offset + ofs;
+ b->version = node->i.version;
+ b->ino = node->i.ino;
if (max_totlen < node->u.totlen)
max_totlen = node->u.totlen;
break;
@@ -1750,12 +1745,15 @@ jffs2_1pass_build_lists(struct part_info * part)
break;
if (! (counterN%100))
puts ("\b\b. ");
- if (insert_node(&pL->dir, (u32) part->offset +
- ofs) == NULL) {
+ b = insert_node(&pL->dir);
+ if (!b) {
free(buf);
jffs2_free_cache(part);
return 0;
}
+ b->offset = (u32)part->offset + ofs;
+ b->version = node->d.version;
+ b->pino = node->d.pino;
if (max_totlen < node->u.totlen)
max_totlen = node->u.totlen;
counterN++;
diff --git a/fs/jffs2/jffs2_private.h b/fs/jffs2/jffs2_private.h
index 06b6ca2..65d19a7 100644
--- a/fs/jffs2/jffs2_private.h
+++ b/fs/jffs2/jffs2_private.h
@@ -8,6 +8,11 @@ struct b_node {
u32 offset;
struct b_node *next;
enum { CRC_UNKNOWN = 0, CRC_OK, CRC_BAD } datacrc;
+ u32 version;
+ union {
+ u32 ino; /* for inodes */
+ u32 pino; /* for dirents */
+ };
};
struct b_list {
generated by cgit v1.1 at 2024-07-15 02:32:23 +0000