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Date: Thu, 24 Sep 2009 21:28:59 -0500
From: Eric Sandeen <sandeen@...hat.com>
To: ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH 1/2] pu branch: fix more direct fs->group_desc accesses
This fixes still more direct accesses to fs->group_desc
fields off a normal array index (group_desc[i]). Since
we have variable sized group_desc depending on the group_desc
size, these all must go through accessor functions.
Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---
diff --git a/debugfs/set_fields.c b/debugfs/set_fields.c
index 7ba7782..88cf411 100644
--- a/debugfs/set_fields.c
+++ b/debugfs/set_fields.c
@@ -415,7 +415,10 @@ static errcode_t parse_gd_csum(struct field_set_info *info, char *arg)
if (strcmp(arg, "calc") == 0) {
ext2fs_group_desc_csum_set(current_fs, set_bg);
- set_gd = current_fs->group_desc[set_bg];
+ memcpy(&set_gd, ext2fs_group_desc(current_fs,
+ current_fs->group_desc,
+ set_bg),
+ sizeof(set_gd));
printf("Checksum set to 0x%04x\n",
ext2fs_bg_checksum(current_fs, set_bg));
return 0;
@@ -570,10 +573,14 @@ void do_set_block_group_descriptor(int argc, char *argv[])
return;
}
- set_gd = current_fs->group_desc[set_bg];
+ memcpy(&set_gd, ext2fs_group_desc(current_fs,
+ current_fs->group_desc, set_bg),
+ sizeof(set_gd));
if (ss->func(ss, argv[3]) == 0) {
- current_fs->group_desc[set_bg] = set_gd;
+ memcpy(ext2fs_group_desc(current_fs,
+ current_fs->group_desc, set_bg),
+ &set_gd, sizeof(set_gd));
ext2fs_mark_super_dirty(current_fs);
}
}
diff --git a/lib/ext2fs/closefs.c b/lib/ext2fs/closefs.c
index cc3a884..a04d560 100644
--- a/lib/ext2fs/closefs.c
+++ b/lib/ext2fs/closefs.c
@@ -303,7 +303,7 @@ errcode_t ext2fs_flush(ext2_filsys fs)
}
#else
super_shadow = fs->super;
- group_shadow = fs->group_desc;
+ group_shadow = ext2fs_group_desc(fs, fs->group_desc, 0);
#endif
/*
diff --git a/lib/ext2fs/csum.c b/lib/ext2fs/csum.c
index a6661b7..b99be26 100644
--- a/lib/ext2fs/csum.c
+++ b/lib/ext2fs/csum.c
@@ -204,9 +204,9 @@ int main(int argc, char **argv)
ext2fs_block_bitmap_loc_set(fs, i, 124);
ext2fs_inode_bitmap_loc_set(fs, i, 125);
ext2fs_inode_table_loc_set(fs, i, 126);
- fs->group_desc[i].bg_free_blocks_count = 31119;
- fs->group_desc[i].bg_free_inodes_count = 15701;
- fs->group_desc[i].bg_used_dirs_count = 2;
+ ext2fs_bg_free_blocks_count_set(fs, i, 31119);
+ ext2fs_bg_free_inodes_count_set(fs, i, 15701);
+ ext2fs_bg_used_dirs_count_set(fs, i, 2);
ext2fs_bg_flags_zap(fs, i);
};
@@ -249,7 +249,7 @@ int main(int argc, char **argv)
csum1 = ext2fs_group_desc_csum(fs, 0);
ext2fs_bg_checksum_set(fs, 0, csum1);
print_csum("csum_new", fs, 0);
- fs->group_desc[0].bg_free_blocks_count = 1;
+ ext2fs_bg_free_blocks_count_set(fs, 0, 1);
csum2 = ext2fs_group_desc_csum(fs, 0);
print_csum("csum_blk", fs, 0);
if (csum1 == csum2) {
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index c81f625..dea3366 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -1021,9 +1021,9 @@ static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
{
dgrp_t group;
group = ext2fs_group_of_blk(fs, blk);
- if (fs->group_desc[group].bg_block_bitmap == blk)
+ if (ext2fs_block_bitmap_loc(fs, group) == blk)
return 1;
- if (fs->group_desc[group].bg_inode_bitmap == blk)
+ if (ext2fs_inode_bitmap_loc(fs, group) == blk)
return 1;
return 0;
}
@@ -1233,20 +1233,20 @@ static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
blk_t blk, new_blk;
for (i = 0; i < fs->group_desc_count; i++) {
- blk = fs->group_desc[i].bg_block_bitmap;
+ blk = ext2fs_block_bitmap_loc(fs, i);
if (ext2fs_test_block_bitmap2(bmap, blk)) {
new_blk = translate_block(blk);
if (!new_blk)
continue;
- fs->group_desc[i].bg_block_bitmap = new_blk;
+ ext2fs_block_bitmap_loc_set(fs, i, new_blk);
}
- blk = fs->group_desc[i].bg_inode_bitmap;
+ blk = ext2fs_inode_bitmap_loc(fs, i);
if (ext2fs_test_block_bitmap2(bmap, blk)) {
new_blk = translate_block(blk);
if (!new_blk)
continue;
- fs->group_desc[i].bg_inode_bitmap = new_blk;
+ ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
}
}
return 0;
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index 9a70b27..0d3f05f 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -438,7 +438,8 @@ retry:
for (i = fs->group_desc_count;
i < old_fs->group_desc_count; i++) {
free_gdp_blocks(fs, reserve_blocks,
- &old_fs->group_desc[i]);
+ ext2fs_group_desc(old_fs,
+ old_fs->group_desc, i));
}
retval = 0;
goto errout;
--
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