Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-28 13:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

[readdir] convert freevxfs

Browse Source 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-18 03:15:00 -04:00
parent 8d3af7f333
commit 9b5d5a1707
1 changed files with 23 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
fs/freevxfs/vxfs_lookup.c
View File

@ -49,7 +49,7 @@
static struct dentry * vxfs_lookup(struct inode *, struct dentry *, unsigned int);
static int vxfs_readdir(struct file *, void *, filldir_t);
static int vxfs_readdir(struct file *, struct dir_context *);
const struct inode_operations vxfs_dir_inode_ops = {
.lookup = vxfs_lookup,
@ -58,7 +58,7 @@ const struct inode_operations vxfs_dir_inode_ops = {
const struct file_operations vxfs_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = vxfs_readdir,
.iterate = vxfs_readdir,
};
@ -235,7 +235,7 @@ vxfs_lookup(struct inode *dip, struct dentry *dp, unsigned int flags)
* Zero.
*/
static int
vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
vxfs_readdir(struct file *fp, struct dir_context *ctx)
{
struct inode *ip = file_inode(fp);
struct super_block *sbp = ip->i_sb;
@ -243,20 +243,17 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
u_long page, npages, block, pblocks, nblocks, offset;
loff_t pos;
switch ((long)fp->f_pos) {
case 0:
if (filler(retp, ".", 1, fp->f_pos, ip->i_ino, DT_DIR) < 0)
goto out;
fp->f_pos++;
/* fallthrough */
case 1:
if (filler(retp, "..", 2, fp->f_pos, VXFS_INO(ip)->vii_dotdot, DT_DIR) < 0)
goto out;
fp->f_pos++;
/* fallthrough */
if (ctx->pos == 0) {
if (!dir_emit_dot(fp, ctx))
return 0;
ctx->pos = 1;
}
pos = fp->f_pos - 2;
if (ctx->pos == 1) {
if (!dir_emit(ctx, "..", 2, VXFS_INO(ip)->vii_dotdot, DT_DIR))
return 0;
ctx->pos = 2;
}
pos = ctx->pos - 2;
if (pos > VXFS_DIRROUND(ip->i_size))
return 0;
@ -270,16 +267,16 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
block = (u_long)(pos >> sbp->s_blocksize_bits) % pblocks;
for (; page < npages; page++, block = 0) {
caddr_t kaddr;
char *kaddr;
struct page *pp;
pp = vxfs_get_page(ip->i_mapping, page);
if (IS_ERR(pp))
continue;
kaddr = (caddr_t)page_address(pp);
kaddr = (char *)page_address(pp);
for (; block <= nblocks && block <= pblocks; block++) {
caddr_t baddr, limit;
char *baddr, *limit;
struct vxfs_dirblk *dbp;
struct vxfs_direct *de;
@ -292,21 +289,18 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
(kaddr + offset) :
(baddr + VXFS_DIRBLKOV(dbp)));
for (; (caddr_t)de <= limit; de = vxfs_next_entry(de)) {
int over;
for (; (char *)de <= limit; de = vxfs_next_entry(de)) {
if (!de->d_reclen)
break;
if (!de->d_ino)
continue;
offset = (caddr_t)de - kaddr;
over = filler(retp, de->d_name, de->d_namelen,
((page << PAGE_CACHE_SHIFT) | offset) + 2,
de->d_ino, DT_UNKNOWN);
if (over) {
offset = (char *)de - kaddr;
ctx->pos = ((page << PAGE_CACHE_SHIFT) | offset) + 2;
if (!dir_emit(ctx, de->d_name, de->d_namelen,
de->d_ino, DT_UNKNOWN)) {
vxfs_put_page(pp);
goto done;
return 0;
}
}
offset = 0;
@ -314,9 +308,6 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
vxfs_put_page(pp);
offset = 0;
}
done:
fp->f_pos = ((page << PAGE_CACHE_SHIFT) | offset) + 2;
out:
ctx->pos = ((page << PAGE_CACHE_SHIFT) | offset) + 2;
return 0;
}