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[readdir] convert exofs 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-16 13:48:17 -04:00
parent 81b9f66e6b
commit 75811d4fda
1 changed files with 16 additions and 22 deletions
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38
fs/exofs/dir.c
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@ -239,22 +239,19 @@ void exofs_set_de_type(struct exofs_dir_entry *de, struct inode *inode)
}
static int
exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
exofs_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);
unsigned int offset = pos & ~PAGE_CACHE_MASK;
unsigned long n = pos >> PAGE_CACHE_SHIFT;
unsigned long npages = dir_pages(inode);
unsigned chunk_mask = ~(exofs_chunk_size(inode)-1);
unsigned char *types = NULL;
int need_revalidate = (filp->f_version != inode->i_version);
int need_revalidate = (file->f_version != inode->i_version);
if (pos > inode->i_size - EXOFS_DIR_REC_LEN(1))
return 0;
types = exofs_filetype_table;
for ( ; n < npages; n++, offset = 0) {
char *kaddr, *limit;
struct exofs_dir_entry *de;
@ -263,7 +260,7 @@ exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (IS_ERR(page)) {
EXOFS_ERR("ERROR: bad page in directory(0x%lx)\n",
inode->i_ino);
filp->f_pos += PAGE_CACHE_SIZE - offset;
ctx->pos += PAGE_CACHE_SIZE - offset;
return PTR_ERR(page);
}
kaddr = page_address(page);
@ -271,9 +268,9 @@ exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (offset) {
offset = exofs_validate_entry(kaddr, offset,
chunk_mask);
filp->f_pos = (n<<PAGE_CACHE_SHIFT) + offset;
ctx->pos = (n<<PAGE_CACHE_SHIFT) + offset;
}
filp->f_version = inode->i_version;
file->f_version = inode->i_version;
need_revalidate = 0;
}
de = (struct exofs_dir_entry *)(kaddr + offset);
@ -288,27 +285,24 @@ exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
return -EIO;
}
if (de->inode_no) {
int over;
unsigned char d_type = DT_UNKNOWN;
unsigned char t;
if (types && de->file_type < EXOFS_FT_MAX)
d_type = types[de->file_type];
if (de->file_type < EXOFS_FT_MAX)
t = exofs_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,
if (!dir_emit(ctx, de->name, de->name_len,
le64_to_cpu(de->inode_no),
d_type);
if (over) {
t)) {
exofs_put_page(page);
return 0;
}
}
filp->f_pos += le16_to_cpu(de->rec_len);
ctx->pos += le16_to_cpu(de->rec_len);
}
exofs_put_page(page);
}
return 0;
}
@ -669,5 +663,5 @@ not_empty:
const struct file_operations exofs_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = exofs_readdir,
.iterate = exofs_readdir,
};