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OpenCloudOS-Kernel
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[readdir] convert adfs 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-17 17:30:10 -04:00
parent 46d0733801
commit 2638ffbac9
1 changed files with 18 additions and 24 deletions
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42
fs/adfs/dir.c
View File

@ -17,47 +17,43 @@
static DEFINE_RWLOCK(adfs_dir_lock);
static int
adfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
adfs_readdir(struct file *file, struct dir_context *ctx)
{
struct inode *inode = file_inode(filp);
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct object_info obj;
struct adfs_dir dir;
int ret = 0;
if (filp->f_pos >> 32)
goto out;
if (ctx->pos >> 32)
return 0;
ret = ops->read(sb, inode->i_ino, inode->i_size, &dir);
if (ret)
goto out;
return ret;
switch ((unsigned long)filp->f_pos) {
case 0:
if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
if (ctx->pos == 0) {
if (!dir_emit_dot(file, ctx))
goto free_out;
filp->f_pos += 1;
case 1:
if (filldir(dirent, "..", 2, 1, dir.parent_id, DT_DIR) < 0)
ctx->pos = 1;
}
if (ctx->pos == 1) {
if (!dir_emit(ctx, "..", 2, dir.parent_id, DT_DIR))
goto free_out;
filp->f_pos += 1;
default:
break;
ctx->pos = 2;
}
read_lock(&adfs_dir_lock);
ret = ops->setpos(&dir, filp->f_pos - 2);
ret = ops->setpos(&dir, ctx->pos - 2);
if (ret)
goto unlock_out;
while (ops->getnext(&dir, &obj) == 0) {
if (filldir(dirent, obj.name, obj.name_len,
filp->f_pos, obj.file_id, DT_UNKNOWN) < 0)
goto unlock_out;
filp->f_pos += 1;
if (!dir_emit(ctx, obj.name, obj.name_len,
obj.file_id, DT_UNKNOWN))
break;
ctx->pos++;
}
unlock_out:
@ -65,8 +61,6 @@ unlock_out:
free_out:
ops->free(&dir);
out:
return ret;
}
@ -192,7 +186,7 @@ out:
const struct file_operations adfs_dir_operations = {
.read = generic_read_dir,
.llseek = generic_file_llseek,
.readdir = adfs_readdir,
.iterate = adfs_readdir,
.fsync = generic_file_fsync,
};