Only dump nat info of nids inside the specified range.
Signed-off-by: Junling Zheng <zhengjunl...@huawei.com>
---
v1 -> v2:
1) change {start,end}_nat type into nid_t
2) put ASSERT() sentence close up to malloc
3) use F2FS_NODE_INO and F2FS_META_INO instead of ino 1 and 2
4) update man page of dump.f2fs
fsck/dump.c | 82 ++++++++++++++++++++++---------------------------
fsck/fsck.h | 6 ++--
fsck/main.c | 4 +--
man/dump.f2fs.8 | 13 ++++++--
4 files changed, 52 insertions(+), 53 deletions(-)
diff --git a/fsck/dump.c b/fsck/dump.c
index 9236a43..942e874 100644
--- a/fsck/dump.c
+++ b/fsck/dump.c
@@ -31,32 +31,35 @@ const char *seg_type_name[SEG_TYPE_MAX + 1] = {
"SEG_TYPE_NONE",
};
-void nat_dump(struct f2fs_sb_info *sbi)
+void nat_dump(struct f2fs_sb_info *sbi, nid_t start_nat, nid_t end_nat)
{
- struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct f2fs_nat_block *nat_block;
struct f2fs_node *node_block;
- u32 nr_nat_blks, nid;
+ nid_t nid;
pgoff_t block_off;
pgoff_t block_addr;
char buf[BUF_SZ];
int seg_off;
int fd, ret, pack;
- unsigned int i;
nat_block = (struct f2fs_nat_block *)calloc(BLOCK_SZ, 1);
- node_block = (struct f2fs_node *)calloc(BLOCK_SZ, 1);
ASSERT(nat_block);
-
- nr_nat_blks = get_sb(segment_count_nat) <<
- (sbi->log_blocks_per_seg - 1);
+ node_block = (struct f2fs_node *)calloc(BLOCK_SZ, 1);
+ ASSERT(node_block);
fd = open("dump_nat", O_CREAT|O_WRONLY|O_TRUNC, 0666);
ASSERT(fd >= 0);
- for (block_off = 0; block_off < nr_nat_blks; pack = 1, block_off++) {
+ for (nid = start_nat; nid < end_nat; pack = 1, nid++) {
+ struct f2fs_nat_entry raw_nat;
+ struct node_info ni;
+ if(nid == 0 || nid == F2FS_NODE_INO(sbi) ||
+ nid == F2FS_META_INO(sbi))
+ continue;
+ ni.nid = nid;
+ block_off = nid / NAT_ENTRY_PER_BLOCK;
seg_off = block_off >> sbi->log_blocks_per_seg;
block_addr = (pgoff_t)(nm_i->nat_blkaddr +
(seg_off << sbi->log_blocks_per_seg << 1) +
@@ -67,42 +70,11 @@ void nat_dump(struct f2fs_sb_info *sbi)
pack = 2;
}
- ret = dev_read_block(nat_block, block_addr);
- ASSERT(ret >= 0);
-
- nid = block_off * NAT_ENTRY_PER_BLOCK;
- for (i = 0; i < NAT_ENTRY_PER_BLOCK; i++) {
- struct f2fs_nat_entry raw_nat;
- struct node_info ni;
- ni.nid = nid + i;
-
- if(nid + i == 0 || nid + i == 1 || nid + i == 2 )
- continue;
- if (lookup_nat_in_journal(sbi, nid + i,
- &raw_nat) >= 0) {
- node_info_from_raw_nat(&ni, &raw_nat);
- ret = dev_read_block(node_block, ni.blk_addr);
- ASSERT(ret >= 0);
- if (ni.blk_addr != 0x0) {
- memset(buf, 0, BUF_SZ);
- snprintf(buf, BUF_SZ,
- "nid:%5u\tino:%5u\toffset:%5u"
- "\tblkaddr:%10u\tpack:%d\n",
- ni.nid, ni.ino,
-
le32_to_cpu(node_block->footer.flag) >>
- OFFSET_BIT_SHIFT,
- ni.blk_addr, pack);
- ret = write(fd, buf, strlen(buf));
- ASSERT(ret >= 0);
- }
- } else {
- node_info_from_raw_nat(&ni,
- &nat_block->entries[i]);
- if (ni.blk_addr == 0)
- continue;
-
- ret = dev_read_block(node_block, ni.blk_addr);
- ASSERT(ret >= 0);
+ if (lookup_nat_in_journal(sbi, nid, &raw_nat) >= 0) {
+ node_info_from_raw_nat(&ni, &raw_nat);
+ ret = dev_read_block(node_block, ni.blk_addr);
+ ASSERT(ret >= 0);
+ if (ni.blk_addr != 0x0) {
memset(buf, 0, BUF_SZ);
snprintf(buf, BUF_SZ,
"nid:%5u\tino:%5u\toffset:%5u"
@@ -114,6 +86,26 @@ void nat_dump(struct f2fs_sb_info *sbi)
ret = write(fd, buf, strlen(buf));
ASSERT(ret >= 0);
}
+ } else {
+ ret = dev_read_block(nat_block, block_addr);
+ ASSERT(ret >= 0);
+ node_info_from_raw_nat(&ni,
+ &nat_block->entries[nid %
NAT_ENTRY_PER_BLOCK]);
+ if (ni.blk_addr == 0)
+ continue;
+
+ ret = dev_read_block(node_block, ni.blk_addr);
+ ASSERT(ret >= 0);
+ memset(buf, 0, BUF_SZ);
+ snprintf(buf, BUF_SZ,
+ "nid:%5u\tino:%5u\toffset:%5u"
+ "\tblkaddr:%10u\tpack:%d\n",
+ ni.nid, ni.ino,
+ le32_to_cpu(node_block->footer.flag) >>
+ OFFSET_BIT_SHIFT,
+ ni.blk_addr, pack);
+ ret = write(fd, buf, strlen(buf));
+ ASSERT(ret >= 0);
}
}
diff --git a/fsck/fsck.h b/fsck/fsck.h
index 5530aff..4cac4e8 100644
--- a/fsck/fsck.h
+++ b/fsck/fsck.h
@@ -197,8 +197,8 @@ extern void write_nat_bits(struct f2fs_sb_info *, struct
f2fs_super_block *,
/* dump.c */
struct dump_option {
nid_t nid;
- int start_nat;
- int end_nat;
+ nid_t start_nat;
+ nid_t end_nat;
int start_sit;
int end_sit;
int start_ssa;
@@ -206,7 +206,7 @@ struct dump_option {
int32_t blk_addr;
};
-extern void nat_dump(struct f2fs_sb_info *);
+extern void nat_dump(struct f2fs_sb_info *, nid_t, nid_t);
extern void sit_dump(struct f2fs_sb_info *, unsigned int, unsigned int);
extern void ssa_dump(struct f2fs_sb_info *, int, int);
extern void dump_node(struct f2fs_sb_info *, nid_t, int);
diff --git a/fsck/main.c b/fsck/main.c
index f6d12b0..714e28a 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -73,7 +73,7 @@ void dump_usage()
MSG(0, "[options]:\n");
MSG(0, " -d debug level [default:0]\n");
MSG(0, " -i inode no (hex)\n");
- MSG(0, " -n [NAT dump segno from #1~#2 (decimal), for all 0~-1]\n");
+ MSG(0, " -n [NAT dump nid from #1~#2 (decimal), for all 0~-1]\n");
MSG(0, " -s [SIT dump segno from #1~#2 (decimal), for all 0~-1]\n");
MSG(0, " -S sparse_mode\n");
MSG(0, " -a [SSA dump segno from #1~#2 (decimal), for all 0~-1]\n");
@@ -645,7 +645,7 @@ static void do_dump(struct f2fs_sb_info *sbi)
if (opt->end_ssa == -1)
opt->end_ssa = SM_I(sbi)->main_segments;
if (opt->start_nat != -1)
- nat_dump(sbi);
+ nat_dump(sbi, opt->start_nat, opt->end_nat);
if (opt->start_sit != -1)
sit_dump(sbi, opt->start_sit, opt->end_sit);
if (opt->start_ssa != -1)
diff --git a/man/dump.f2fs.8 b/man/dump.f2fs.8
index 35616e5..eedba85 100644
--- a/man/dump.f2fs.8
+++ b/man/dump.f2fs.8
@@ -10,6 +10,10 @@ dump.f2fs \- retrieve directory and file entries from an
F2FS-formated image
.I inode number
]
[
+.B \-n
+.I NAT range
+]
+[
.B \-s
.I SIT range
]
@@ -32,9 +36,9 @@ is used to retrieve f2fs metadata (usually in a disk
partition).
\fIdevice\fP is the special file corresponding to the device (e.g.
\fI/dev/sdXX\fP).
-Currently, it can retrieve 1) a file given its inode number, 2) SIT entries
into
-a file, 3) SSA entries into a file, 4) reverse information from the given block
-address.
+Currently, it can retrieve 1) a file given its inode number, 2) NAT
+entries into a file, 3) SIT entries into a file, 4) SSA entries into
+a file, 5) reverse information from the given block address.
.PP
The exit code returned by
.B dump.f2fs
@@ -44,6 +48,9 @@ is 0 on success and -1 on failure.
.BI \-i " inode number"
Specify an inode number to dump out.
.TP
+.BI \-n " NAT range"
+Specify a range presented by nids to dump NAT entries.
+.TP
.BI \-s " SIT range"
Specify a range presented by segment numbers to dump SIT entries.
.TP
--
2.18.0
------------------------------------------------------------------------------
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