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[readdir] convert nilfs2

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-16 14:36:14 -04:00
parent d55fea8ddb
commit 1616abe841
1 changed files with 18 additions and 30 deletions
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48
fs/nilfs2/dir.c
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@ -256,22 +256,18 @@ static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode)
de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
}
static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
static int nilfs_readdir(struct file *file, struct dir_context *ctx)
{
loff_t pos = filp->f_pos;
struct inode *inode = file_inode(filp);
loff_t pos = ctx->pos;
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
unsigned int offset = pos & ~PAGE_CACHE_MASK;
unsigned long n = pos >> PAGE_CACHE_SHIFT;
unsigned long npages = dir_pages(inode);
/* unsigned chunk_mask = ~(nilfs_chunk_size(inode)-1); */
unsigned char *types = NULL;
int ret;
if (pos > inode->i_size - NILFS_DIR_REC_LEN(1))
goto success;
types = nilfs_filetype_table;
return 0;
for ( ; n < npages; n++, offset = 0) {
char *kaddr, *limit;
@ -281,9 +277,8 @@ static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (IS_ERR(page)) {
nilfs_error(sb, __func__, "bad page in #%lu",
inode->i_ino);
filp->f_pos += PAGE_CACHE_SIZE - offset;
ret = -EIO;
goto done;
ctx->pos += PAGE_CACHE_SIZE - offset;
return -EIO;
}
kaddr = page_address(page);
de = (struct nilfs_dir_entry *)(kaddr + offset);
@ -293,35 +288,28 @@ static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (de->rec_len == 0) {
nilfs_error(sb, __func__,
"zero-length directory entry");
ret = -EIO;
nilfs_put_page(page);
goto done;
return -EIO;
}
if (de->inode) {
int over;
unsigned char d_type = DT_UNKNOWN;
unsigned char t;
if (types && de->file_type < NILFS_FT_MAX)
d_type = types[de->file_type];
if (de->file_type < NILFS_FT_MAX)
t = nilfs_filetype_table[de->file_type];
else
t = DT_UNKNOWN;
offset = (char *)de - kaddr;
over = filldir(dirent, de->name, de->name_len,
(n<<PAGE_CACHE_SHIFT) | offset,
le64_to_cpu(de->inode), d_type);
if (over) {
if (!dir_emit(ctx, de->name, de->name_len,
le64_to_cpu(de->inode), t)) {
nilfs_put_page(page);
goto success;
return 0;
}
}
filp->f_pos += nilfs_rec_len_from_disk(de->rec_len);
ctx->pos += nilfs_rec_len_from_disk(de->rec_len);
}
nilfs_put_page(page);
}
success:
ret = 0;
done:
return ret;
return 0;
}
/*
@ -678,7 +666,7 @@ int nilfs_empty_dir(struct inode *inode)
const struct file_operations nilfs_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = nilfs_readdir,
.iterate = nilfs_readdir,
.unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = nilfs_compat_ioctl,