*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
/*
#define IS_LEAF 1 /* Hashed (leaf) directory */
#define IS_DINODE 2 /* Linear (stuffed dinode block) directory */
-#if 1
-#define gfs2_disk_hash2offset(h) (((uint64_t)(h)) >> 1)
-#define gfs2_dir_offset2hash(p) ((uint32_t)(((uint64_t)(p)) << 1))
-#else
-#define gfs2_disk_hash2offset(h) (((uint64_t)(h)))
-#define gfs2_dir_offset2hash(p) ((uint32_t)(((uint64_t)(p))))
-#endif
+#define gfs2_disk_hash2offset(h) (((u64)(h)) >> 1)
+#define gfs2_dir_offset2hash(p) ((u32)(((u64)(p)) << 1))
-typedef int (*leaf_call_t) (struct gfs2_inode *dip,
- uint32_t index, uint32_t len, uint64_t leaf_no,
- void *data);
+typedef int (*leaf_call_t) (struct gfs2_inode *dip, u32 index, u32 len,
+ u64 leaf_no, void *data);
+typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent,
+ const struct qstr *name, void *opaque);
-int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, uint64_t block,
+int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head **bhp)
{
struct buffer_head *bh;
return 0;
}
-static int gfs2_dir_get_existing_buffer(struct gfs2_inode *ip, uint64_t block,
+static int gfs2_dir_get_existing_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head **bhp)
{
struct buffer_head *bh;
* Returns: The number of bytes correctly written or error code
*/
static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf,
- uint64_t offset, unsigned int size)
+ u64 offset, unsigned int size)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head *dibh;
- uint64_t lblock, dblock;
- uint32_t extlen = 0;
+ u64 lblock, dblock;
+ u32 extlen = 0;
unsigned int o;
int copied = 0;
int error = 0;
return -EINVAL;
if (gfs2_is_stuffed(ip)) {
- error = gfs2_unstuff_dinode(ip, NULL, NULL);
+ error = gfs2_unstuff_dinode(ip, NULL);
if (error)
return error;
}
if (error)
goto fail;
+ buf += amount;
copied += amount;
lblock++;
dblock++;
* Returns: The amount of data actually copied or the error
*/
static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf,
- uint64_t offset, unsigned int size)
+ u64 offset, unsigned int size)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- uint64_t lblock, dblock;
- uint32_t extlen = 0;
+ u64 lblock, dblock;
+ u32 extlen = 0;
unsigned int o;
int copied = 0;
int error = 0;
if (offset >= ip->i_di.di_size)
return 0;
- if ((offset + size) > ip->i_di.di_size)
+ if (offset + size > ip->i_di.di_size)
size = ip->i_di.di_size - offset;
if (!size)
if (error)
goto fail;
+ buf += amount;
copied += amount;
lblock++;
return (copied) ? copied : error;
}
-typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent,
- const struct qstr *name,
- void *opaque);
-
static inline int __gfs2_dirent_find(const struct gfs2_dirent *dent,
const struct qstr *name, int ret)
{
if (dent->de_inum.no_addr != 0 &&
be32_to_cpu(dent->de_hash) == name->hash &&
be16_to_cpu(dent->de_name_len) == name->len &&
- memcmp((char *)(dent+1), name->name, name->len) == 0)
+ memcmp(dent+1, name->name, name->len) == 0)
return ret;
return 0;
}
if (!dent->de_inum.no_addr)
actual = GFS2_DIRENT_SIZE(0);
- if ((totlen - actual) >= required)
+ if (totlen - actual >= required)
return 1;
return 0;
}
return -1;
}
-static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode,
- void *buf,
+static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode, void *buf,
unsigned int len, gfs2_dscan_t scan,
const struct qstr *name,
void *opaque)
offset = ret;
prev = NULL;
- dent = (struct gfs2_dirent *)(buf + offset);
+ dent = buf + offset;
size = be16_to_cpu(dent->de_rec_len);
if (gfs2_check_dirent(dent, offset, size, len, 1))
goto consist_inode;
if (offset == len)
break;
prev = dent;
- dent = (struct gfs2_dirent *)(buf + offset);
+ dent = buf + offset;
size = be16_to_cpu(dent->de_rec_len);
if (gfs2_check_dirent(dent, offset, size, len, 0))
goto consist_inode;
}
}
+static int dirent_check_reclen(struct gfs2_inode *dip,
+ const struct gfs2_dirent *d, const void *end_p)
+{
+ const void *ptr = d;
+ u16 rec_len = be16_to_cpu(d->de_rec_len);
+
+ if (unlikely(rec_len < sizeof(struct gfs2_dirent)))
+ goto broken;
+ ptr += rec_len;
+ if (ptr < end_p)
+ return rec_len;
+ if (ptr == end_p)
+ return -ENOENT;
+broken:
+ gfs2_consist_inode(dip);
+ return -EIO;
+}
+
/**
* dirent_next - Next dirent
* @dip: the directory
static int dirent_next(struct gfs2_inode *dip, struct buffer_head *bh,
struct gfs2_dirent **dent)
{
- struct gfs2_dirent *tmp, *cur;
- char *bh_end;
- uint16_t cur_rec_len;
-
- cur = *dent;
- bh_end = bh->b_data + bh->b_size;
- cur_rec_len = be16_to_cpu(cur->de_rec_len);
+ struct gfs2_dirent *cur = *dent, *tmp;
+ char *bh_end = bh->b_data + bh->b_size;
+ int ret;
- if ((char *)cur + cur_rec_len >= bh_end) {
- if ((char *)cur + cur_rec_len > bh_end) {
- gfs2_consist_inode(dip);
- return -EIO;
- }
- return -ENOENT;
- }
-
- tmp = (struct gfs2_dirent *)((char *)cur + cur_rec_len);
-
- if ((char *)tmp + be16_to_cpu(tmp->de_rec_len) > bh_end) {
- gfs2_consist_inode(dip);
- return -EIO;
- }
+ ret = dirent_check_reclen(dip, cur, bh_end);
+ if (ret < 0)
+ return ret;
- if (cur_rec_len == 0) {
- gfs2_consist_inode(dip);
- return -EIO;
- }
+ tmp = (void *)cur + ret;
+ ret = dirent_check_reclen(dip, tmp, bh_end);
+ if (ret == -EIO)
+ return ret;
/* Only the first dent could ever have de_inum.no_addr == 0 */
if (!tmp->de_inum.no_addr) {
}
*dent = tmp;
-
return 0;
}
static void dirent_del(struct gfs2_inode *dip, struct buffer_head *bh,
struct gfs2_dirent *prev, struct gfs2_dirent *cur)
{
- uint16_t cur_rec_len, prev_rec_len;
+ u16 cur_rec_len, prev_rec_len;
if (!cur->de_inum.no_addr) {
gfs2_consist_inode(dip);
return gfs2_init_dirent(inode, dent, name, bh);
}
-static int get_leaf(struct gfs2_inode *dip, uint64_t leaf_no,
+static int get_leaf(struct gfs2_inode *dip, u64 leaf_no,
struct buffer_head **bhp)
{
int error;
* Returns: 0 on success, error code otherwise
*/
-static int get_leaf_nr(struct gfs2_inode *dip, uint32_t index,
- uint64_t *leaf_out)
+static int get_leaf_nr(struct gfs2_inode *dip, u32 index,
+ u64 *leaf_out)
{
- uint64_t leaf_no;
+ u64 leaf_no;
int error;
error = gfs2_dir_read_data(dip, (char *)&leaf_no,
- index * sizeof(uint64_t),
- sizeof(uint64_t));
- if (error != sizeof(uint64_t))
+ index * sizeof(u64),
+ sizeof(u64));
+ if (error != sizeof(u64))
return (error < 0) ? error : -EIO;
*leaf_out = be64_to_cpu(leaf_no);
return 0;
}
-static int get_first_leaf(struct gfs2_inode *dip, uint32_t index,
+static int get_first_leaf(struct gfs2_inode *dip, u32 index,
struct buffer_head **bh_out)
{
- uint64_t leaf_no;
+ u64 leaf_no;
int error;
error = get_leaf_nr(dip, index, &leaf_no);
gfs2_metatype_set(bh, GFS2_METATYPE_LF, GFS2_FORMAT_LF);
leaf = (struct gfs2_leaf *)bh->b_data;
leaf->lf_depth = cpu_to_be16(depth);
- leaf->lf_entries = cpu_to_be16(0);
+ leaf->lf_entries = 0;
leaf->lf_dirent_format = cpu_to_be16(GFS2_FORMAT_DE);
- leaf->lf_next = cpu_to_be64(0);
+ leaf->lf_next = 0;
memset(leaf->lf_reserved, 0, sizeof(leaf->lf_reserved));
dent = (struct gfs2_dirent *)(leaf+1);
gfs2_qstr2dirent(&name, bh->b_size - sizeof(struct gfs2_leaf), dent);
struct buffer_head *bh, *dibh;
struct gfs2_leaf *leaf;
int y;
- uint32_t x;
- uint64_t *lp, bn;
+ u32 x;
+ u64 *lp, bn;
int error;
error = gfs2_meta_inode_buffer(dip, &dibh);
gfs2_trans_add_bh(dip->i_gl, dibh, 1);
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
- lp = (uint64_t *)(dibh->b_data + sizeof(struct gfs2_dinode));
+ lp = (u64 *)(dibh->b_data + sizeof(struct gfs2_dinode));
for (x = sdp->sd_hash_ptrs; x--; lp++)
*lp = cpu_to_be64(bn);
struct gfs2_inode *dip = GFS2_I(inode);
struct buffer_head *nbh, *obh, *dibh;
struct gfs2_leaf *nleaf, *oleaf;
- struct gfs2_dirent *dent, *prev = NULL, *next = NULL, *new;
- uint32_t start, len, half_len, divider;
- uint64_t bn, *lp, leaf_no;
- uint32_t index;
+ struct gfs2_dirent *dent = NULL, *prev = NULL, *next = NULL, *new;
+ u32 start, len, half_len, divider;
+ u64 bn, *lp, leaf_no;
+ u32 index;
int x, moved = 0;
int error;
/* Change the pointers.
Don't bother distinguishing stuffed from non-stuffed.
This code is complicated enough already. */
- lp = kmalloc(half_len * sizeof(uint64_t), GFP_NOFS | __GFP_NOFAIL);
+ lp = kmalloc(half_len * sizeof(u64), GFP_NOFS | __GFP_NOFAIL);
/* Change the pointers */
for (x = 0; x < half_len; x++)
lp[x] = cpu_to_be64(bn);
- error = gfs2_dir_write_data(dip, (char *)lp, start * sizeof(uint64_t),
- half_len * sizeof(uint64_t));
- if (error != half_len * sizeof(uint64_t)) {
+ error = gfs2_dir_write_data(dip, (char *)lp, start * sizeof(u64),
+ half_len * sizeof(u64));
+ if (error != half_len * sizeof(u64)) {
if (error >= 0)
error = -EIO;
goto fail_lpfree;
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct buffer_head *dibh;
- uint32_t hsize;
- uint64_t *buf;
- uint64_t *from, *to;
- uint64_t block;
+ u32 hsize;
+ u64 *buf;
+ u64 *from, *to;
+ u64 block;
int x;
int error = 0;
hsize = 1 << dip->i_di.di_depth;
- if (hsize * sizeof(uint64_t) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_di.di_size) {
gfs2_consist_inode(dip);
return -EIO;
}
}
from = buf;
- to = (uint64_t *)((char *)buf + sdp->sd_hash_bsize);
+ to = (u64 *)((char *)buf + sdp->sd_hash_bsize);
for (x = sdp->sd_hash_ptrs; x--; from++) {
*to++ = *from; /* No endianess worries */
return error;
- fail:
+fail:
kfree(buf);
-
return error;
}
static int compare_dents(const void *a, const void *b)
{
- struct gfs2_dirent *dent_a, *dent_b;
- uint32_t hash_a, hash_b;
+ const struct gfs2_dirent *dent_a, *dent_b;
+ u32 hash_a, hash_b;
int ret = 0;
- dent_a = *(struct gfs2_dirent **)a;
+ dent_a = *(const struct gfs2_dirent **)a;
hash_a = be32_to_cpu(dent_a->de_hash);
- dent_b = *(struct gfs2_dirent **)b;
+ dent_b = *(const struct gfs2_dirent **)b;
hash_b = be32_to_cpu(dent_b->de_hash);
if (hash_a > hash_b)
else if (len_a < len_b)
ret = -1;
else
- ret = memcmp((char *)(dent_a + 1),
- (char *)(dent_b + 1),
- len_a);
+ ret = memcmp(dent_a + 1, dent_b + 1, len_a);
}
return ret;
* Returns: errno, >0 on exception from filldir
*/
-static int do_filldir_main(struct gfs2_inode *dip, uint64_t *offset,
+static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
void *opaque, gfs2_filldir_t filldir,
- const struct gfs2_dirent **darr, uint32_t entries,
+ const struct gfs2_dirent **darr, u32 entries,
int *copied)
{
const struct gfs2_dirent *dent, *dent_next;
struct gfs2_inum inum;
- uint64_t off, off_next;
+ u64 off, off_next;
unsigned int x, y;
int run = 0;
int error = 0;
gfs2_inum_in(&inum, (char *)&dent->de_inum);
- error = filldir(opaque, (char *)(dent + 1),
+ error = filldir(opaque, (const char *)(dent + 1),
be16_to_cpu(dent->de_name_len),
off, &inum,
be16_to_cpu(dent->de_type));
return 0;
error = -ENOMEM;
- larr = vmalloc((leaves + entries) * sizeof(void*));
+ larr = vmalloc((leaves + entries) * sizeof(void *));
if (!larr)
goto out;
darr = (const struct gfs2_dirent **)(larr + leaves);
* Returns: errno
*/
-static int dir_e_read(struct inode *inode, uint64_t *offset, void *opaque,
+static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
gfs2_filldir_t filldir)
{
struct gfs2_inode *dip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
- uint32_t hsize, len = 0;
- uint32_t ht_offset, lp_offset, ht_offset_cur = -1;
- uint32_t hash, index;
- uint64_t *lp;
+ u32 hsize, len = 0;
+ u32 ht_offset, lp_offset, ht_offset_cur = -1;
+ u32 hash, index;
+ u64 *lp;
int copied = 0;
int error = 0;
- unsigned depth;
+ unsigned depth = 0;
hsize = 1 << dip->i_di.di_depth;
- if (hsize * sizeof(uint64_t) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_di.di_size) {
gfs2_consist_inode(dip);
return -EIO;
}
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
- ht_offset * sizeof(uint64_t),
+ ht_offset * sizeof(u64),
sdp->sd_hash_bsize);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
return error;
}
-int gfs2_dir_read(struct inode *inode, uint64_t *offset, void *opaque,
+int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
gfs2_filldir_t filldir)
{
struct gfs2_inode *dip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct buffer_head *bh;
struct gfs2_leaf *leaf;
- uint32_t hsize, len;
- uint32_t ht_offset, lp_offset, ht_offset_cur = -1;
- uint32_t index = 0;
- uint64_t *lp;
- uint64_t leaf_no;
+ u32 hsize, len;
+ u32 ht_offset, lp_offset, ht_offset_cur = -1;
+ u32 index = 0;
+ u64 *lp;
+ u64 leaf_no;
int error = 0;
hsize = 1 << dip->i_di.di_depth;
- if (hsize * sizeof(uint64_t) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_di.di_size) {
gfs2_consist_inode(dip);
return -EIO;
}
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
- ht_offset * sizeof(uint64_t),
+ ht_offset * sizeof(u64),
sdp->sd_hash_bsize);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
if (error)
goto out;
leaf = (struct gfs2_leaf *)bh->b_data;
- brelse(bh);
-
len = 1 << (dip->i_di.di_depth - be16_to_cpu(leaf->lf_depth));
+ brelse(bh);
error = lc(dip, index, len, leaf_no, data);
if (error)
error = -EIO;
}
- out:
+out:
kfree(lp);
return error;
* Returns: errno
*/
-static int leaf_dealloc(struct gfs2_inode *dip, uint32_t index, uint32_t len,
- uint64_t leaf_no, void *data)
+static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
+ u64 leaf_no, void *data)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_leaf *tmp_leaf;
struct gfs2_rgrp_list rlist;
struct buffer_head *bh, *dibh;
- uint64_t blk, nblk;
+ u64 blk, nblk;
unsigned int rg_blocks = 0, l_blocks = 0;
char *ht;
- unsigned int x, size = len * sizeof(uint64_t);
+ unsigned int x, size = len * sizeof(u64);
int error;
memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
dip->i_di.di_blocks--;
}
- error = gfs2_dir_write_data(dip, ht, index * sizeof(uint64_t), size);
+ error = gfs2_dir_write_data(dip, ht, index * sizeof(u64), size);
if (error != size) {
if (error >= 0)
error = -EIO;
gfs2_dinode_out(&dip->i_di, dibh->b_data);
brelse(dibh);
- out_end_trans:
+out_end_trans:
gfs2_trans_end(sdp);
-
- out_rg_gunlock:
+out_rg_gunlock:
gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs);
-
- out_rlist:
+out_rlist:
gfs2_rlist_free(&rlist);
gfs2_glock_dq_uninit(&dip->i_alloc.al_ri_gh);
-
- out_qs:
+out_qs:
gfs2_quota_unhold(dip);
-
- out:
+out:
gfs2_alloc_put(dip);
kfree(ht);
-
return error;
}
projects / linux.git / blobdiff