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[GFS2] Fix the bugs I introduced in the last patch but one

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Various endianess changes required in the directory code.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2006-02-14 15:56:44 +00:00
parent d1665e4142
commit 4dd651adbb
1 changed files with 29 additions and 27 deletions
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56
fs/gfs2/dir.c
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@ -417,6 +417,12 @@ static int dirent_next(struct gfs2_inode *dip, struct buffer_head *bh,
gfs2_consist_inode(dip); gfs2_consist_inode(dip);
return -EIO; return -EIO;
} }
if (cur_rec_len == 0) {
gfs2_consist_inode(dip);
return -EIO;
}
/* Only the first dent could ever have de_inum.no_addr == 0 */ /* Only the first dent could ever have de_inum.no_addr == 0 */
if (!tmp->de_inum.no_addr) { if (!tmp->de_inum.no_addr) {
gfs2_consist_inode(dip); gfs2_consist_inode(dip);
@ -512,9 +518,8 @@ int gfs2_dirent_alloc(struct gfs2_inode *dip, struct buffer_head *bh,
gfs2_trans_add_bh(dip->i_gl, bh, 1); gfs2_trans_add_bh(dip->i_gl, bh, 1);
dent->de_rec_len = bh->b_size - offset; dent->de_rec_len = cpu_to_be16(bh->b_size - offset);
dent->de_rec_len = cpu_to_be16(dent->de_rec_len); dent->de_name_len = cpu_to_be16(name_len);
dent->de_name_len = name_len;
*dent_out = dent; *dent_out = dent;
return 0; return 0;
@ -522,10 +527,10 @@ int gfs2_dirent_alloc(struct gfs2_inode *dip, struct buffer_head *bh,
do { do {
uint16_t cur_rec_len; uint16_t cur_rec_len;
uint32_t cur_name_len; uint16_t cur_name_len;
cur_rec_len = be16_to_cpu(dent->de_rec_len); cur_rec_len = be16_to_cpu(dent->de_rec_len);
cur_name_len = dent->de_name_len; cur_name_len = be16_to_cpu(dent->de_name_len);
if ((!dent->de_inum.no_addr && cur_rec_len >= rec_len) || if ((!dent->de_inum.no_addr && cur_rec_len >= rec_len) ||
(cur_rec_len >= GFS2_DIRENT_SIZE(cur_name_len) + rec_len)) { (cur_rec_len >= GFS2_DIRENT_SIZE(cur_name_len) + rec_len)) {
@ -536,18 +541,16 @@ int gfs2_dirent_alloc(struct gfs2_inode *dip, struct buffer_head *bh,
GFS2_DIRENT_SIZE(cur_name_len)); GFS2_DIRENT_SIZE(cur_name_len));
memset(new, 0, sizeof(struct gfs2_dirent)); memset(new, 0, sizeof(struct gfs2_dirent));
new->de_rec_len = cur_rec_len - GFS2_DIRENT_SIZE(cur_name_len); new->de_rec_len = cpu_to_be16(cur_rec_len - GFS2_DIRENT_SIZE(cur_name_len));
new->de_rec_len = cpu_to_be16(new->de_rec_len); new->de_name_len = cpu_to_be16(name_len);
new->de_name_len = name_len;
dent->de_rec_len = cur_rec_len - be16_to_cpu(new->de_rec_len); dent->de_rec_len = cpu_to_be16(cur_rec_len - be16_to_cpu(new->de_rec_len));
dent->de_rec_len = cpu_to_be16(dent->de_rec_len);
*dent_out = new; *dent_out = new;
return 0; return 0;
} }
dent->de_name_len = name_len; dent->de_name_len = cpu_to_be16(name_len);
*dent_out = dent; *dent_out = dent;
return 0; return 0;
@ -594,7 +597,7 @@ static int dirent_fits(struct gfs2_inode *dip, struct buffer_head *bh,
uint32_t cur_name_len; uint32_t cur_name_len;
cur_rec_len = be16_to_cpu(dent->de_rec_len); cur_rec_len = be16_to_cpu(dent->de_rec_len);
cur_name_len = dent->de_name_len; cur_name_len = be16_to_cpu(dent->de_name_len);
if ((!dent->de_inum.no_addr && cur_rec_len >= rec_len) || if ((!dent->de_inum.no_addr && cur_rec_len >= rec_len) ||
(cur_rec_len >= GFS2_DIRENT_SIZE(cur_name_len) + rec_len)) (cur_rec_len >= GFS2_DIRENT_SIZE(cur_name_len) + rec_len))
@ -635,7 +638,7 @@ static int leaf_search(struct gfs2_inode *dip, struct buffer_head *bh,
if (be32_to_cpu(dent->de_hash) == hash && if (be32_to_cpu(dent->de_hash) == hash &&
gfs2_filecmp(filename, (char *)(dent + 1), gfs2_filecmp(filename, (char *)(dent + 1),
dent->de_name_len)) { be16_to_cpu(dent->de_name_len))) {
*dent_out = dent; *dent_out = dent;
if (dent_prev) if (dent_prev)
*dent_prev = prev; *dent_prev = prev;
@ -834,10 +837,9 @@ static int dir_make_exhash(struct gfs2_inode *dip)
/* Adjust the last dirent's record length /* Adjust the last dirent's record length
(Remember that dent still points to the last entry.) */ (Remember that dent still points to the last entry.) */
dent->de_rec_len = be16_to_cpu(dent->de_rec_len) + dent->de_rec_len = cpu_to_be16(be16_to_cpu(dent->de_rec_len) +
sizeof(struct gfs2_dinode) - sizeof(struct gfs2_dinode) -
sizeof(struct gfs2_leaf); sizeof(struct gfs2_leaf));
dent->de_rec_len = cpu_to_be16(dent->de_rec_len);
brelse(bh); brelse(bh);
@ -969,7 +971,7 @@ static int dir_split_leaf(struct gfs2_inode *dip, uint32_t index,
if (dent->de_inum.no_addr && if (dent->de_inum.no_addr &&
be32_to_cpu(dent->de_hash) < divider) { be32_to_cpu(dent->de_hash) < divider) {
name_len = dent->de_name_len; name_len = be16_to_cpu(dent->de_name_len);
gfs2_dirent_alloc(dip, nbh, name_len, &new); gfs2_dirent_alloc(dip, nbh, name_len, &new);
@ -1139,8 +1141,8 @@ static int compare_dents(const void *a, const void *b)
else if (hash_a < hash_b) else if (hash_a < hash_b)
ret = -1; ret = -1;
else { else {
unsigned int len_a = dent_a->de_name_len; unsigned int len_a = be16_to_cpu(dent_a->de_name_len);
unsigned int len_b = dent_b->de_name_len; unsigned int len_b = be16_to_cpu(dent_b->de_name_len);
if (len_a > len_b) if (len_a > len_b)
ret = 1; ret = 1;
@ -1219,9 +1221,9 @@ static int do_filldir_main(struct gfs2_inode *dip, uint64_t *offset,
gfs2_inum_in(&inum, (char *)&dent->de_inum); gfs2_inum_in(&inum, (char *)&dent->de_inum);
error = filldir(opaque, (char *)(dent + 1), error = filldir(opaque, (char *)(dent + 1),
dent->de_name_len, be16_to_cpu(dent->de_name_len),
off, &inum, off, &inum,
dent->de_type); be16_to_cpu(dent->de_type));
if (error) if (error)
return 1; return 1;
@ -1454,7 +1456,7 @@ static int dir_e_search(struct gfs2_inode *dip, struct qstr *filename,
if (inum) if (inum)
gfs2_inum_in(inum, (char *)&dent->de_inum); gfs2_inum_in(inum, (char *)&dent->de_inum);
if (type) if (type)
*type = dent->de_type; *type = be16_to_cpu(dent->de_type);
brelse(bh); brelse(bh);
@ -1563,7 +1565,7 @@ static int dir_e_add(struct gfs2_inode *dip, struct qstr *filename,
gfs2_inum_out(inum, (char *)&dent->de_inum); gfs2_inum_out(inum, (char *)&dent->de_inum);
dent->de_hash = cpu_to_be32(hash); dent->de_hash = cpu_to_be32(hash);
dent->de_type = type; dent->de_type = cpu_to_be16(type);
memcpy((char *)(dent + 1), filename->name, filename->len); memcpy((char *)(dent + 1), filename->name, filename->len);
leaf->lf_entries = be16_to_cpu(leaf->lf_entries) + 1; leaf->lf_entries = be16_to_cpu(leaf->lf_entries) + 1;
@ -1732,7 +1734,7 @@ static int dir_e_mvino(struct gfs2_inode *dip, struct qstr *filename,
gfs2_trans_add_bh(dip->i_gl, bh, 1); gfs2_trans_add_bh(dip->i_gl, bh, 1);
gfs2_inum_out(inum, (char *)&dent->de_inum); gfs2_inum_out(inum, (char *)&dent->de_inum);
dent->de_type = new_type; dent->de_type = cpu_to_be16(new_type);
brelse(bh); brelse(bh);
@ -1780,7 +1782,7 @@ static int dir_l_search(struct gfs2_inode *dip, struct qstr *filename,
if (inum) if (inum)
gfs2_inum_in(inum, (char *)&dent->de_inum); gfs2_inum_in(inum, (char *)&dent->de_inum);
if (type) if (type)
*type = dent->de_type; *type = be16_to_cpu(dent->de_type);
} }
brelse(dibh); brelse(dibh);
@ -1819,7 +1821,7 @@ static int dir_l_add(struct gfs2_inode *dip, struct qstr *filename,
gfs2_inum_out(inum, (char *)&dent->de_inum); gfs2_inum_out(inum, (char *)&dent->de_inum);
dent->de_hash = gfs2_disk_hash(filename->name, filename->len); dent->de_hash = gfs2_disk_hash(filename->name, filename->len);
dent->de_hash = cpu_to_be32(dent->de_hash); dent->de_hash = cpu_to_be32(dent->de_hash);
dent->de_type = type; dent->de_type = cpu_to_be16(type);
memcpy((char *)(dent + 1), filename->name, filename->len); memcpy((char *)(dent + 1), filename->name, filename->len);
dip->i_di.di_entries++; dip->i_di.di_entries++;
@ -1932,7 +1934,7 @@ static int dir_l_mvino(struct gfs2_inode *dip, struct qstr *filename,
gfs2_trans_add_bh(dip->i_gl, dibh, 1); gfs2_trans_add_bh(dip->i_gl, dibh, 1);
gfs2_inum_out(inum, (char *)&dent->de_inum); gfs2_inum_out(inum, (char *)&dent->de_inum);
dent->de_type = new_type; dent->de_type = cpu_to_be16(new_type);
dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds(); dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds();