#include <asm/uaccess.h>
-int vfs_readdir(struct file *file, filldir_t filler, void *buf)
+int iterate_dir(struct file *file, struct dir_context *ctx)
{
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
int res = -ENOTDIR;
- if (!file->f_op || !file->f_op->readdir)
+ if (!file->f_op || (!file->f_op->readdir && !file->f_op->iterate))
goto out;
res = security_file_permission(file, MAY_READ);
res = -ENOENT;
if (!IS_DEADDIR(inode)) {
- res = file->f_op->readdir(file, buf, filler);
+ if (file->f_op->iterate) {
+ ctx->pos = file->f_pos;
+ res = file->f_op->iterate(file, ctx);
+ file->f_pos = ctx->pos;
+ } else {
+ res = file->f_op->readdir(file, ctx, ctx->actor);
+ ctx->pos = file->f_pos;
+ }
file_accessed(file);
}
mutex_unlock(&inode->i_mutex);
out:
return res;
}
-
-EXPORT_SYMBOL(vfs_readdir);
+EXPORT_SYMBOL(iterate_dir);
/*
* Traditional linux readdir() handling..
};
struct readdir_callback {
+ struct dir_context ctx;
struct old_linux_dirent __user * dirent;
int result;
};
static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset,
u64 ino, unsigned int d_type)
{
- struct readdir_callback * buf = (struct readdir_callback *) __buf;
+ struct readdir_callback *buf = (struct readdir_callback *) __buf;
struct old_linux_dirent __user * dirent;
unsigned long d_ino;
{
int error;
struct fd f = fdget(fd);
- struct readdir_callback buf;
+ struct readdir_callback buf = {
+ .ctx.actor = fillonedir,
+ .dirent = dirent
+ };
if (!f.file)
return -EBADF;
- buf.result = 0;
- buf.dirent = dirent;
-
- error = vfs_readdir(f.file, fillonedir, &buf);
+ error = iterate_dir(f.file, &buf.ctx);
if (buf.result)
error = buf.result;
};
struct getdents_callback {
+ struct dir_context ctx;
struct linux_dirent __user * current_dir;
struct linux_dirent __user * previous;
int count;
{
struct fd f;
struct linux_dirent __user * lastdirent;
- struct getdents_callback buf;
+ struct getdents_callback buf = {
+ .ctx.actor = filldir,
+ .count = count,
+ .current_dir = dirent
+ };
int error;
if (!access_ok(VERIFY_WRITE, dirent, count))
if (!f.file)
return -EBADF;
- buf.current_dir = dirent;
- buf.previous = NULL;
- buf.count = count;
- buf.error = 0;
-
- error = vfs_readdir(f.file, filldir, &buf);
+ error = iterate_dir(f.file, &buf.ctx);
if (error >= 0)
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
- if (put_user(f.file->f_pos, &lastdirent->d_off))
+ if (put_user(buf.ctx.pos, &lastdirent->d_off))
error = -EFAULT;
else
error = count - buf.count;
}
struct getdents_callback64 {
+ struct dir_context ctx;
struct linux_dirent64 __user * current_dir;
struct linux_dirent64 __user * previous;
int count;
{
struct fd f;
struct linux_dirent64 __user * lastdirent;
- struct getdents_callback64 buf;
+ struct getdents_callback64 buf = {
+ .ctx.actor = filldir64,
+ .count = count,
+ .current_dir = dirent
+ };
int error;
if (!access_ok(VERIFY_WRITE, dirent, count))
if (!f.file)
return -EBADF;
- buf.current_dir = dirent;
- buf.previous = NULL;
- buf.count = count;
- buf.error = 0;
-
- error = vfs_readdir(f.file, filldir64, &buf);
+ error = iterate_dir(f.file, &buf.ctx);
if (error >= 0)
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
- typeof(lastdirent->d_off) d_off = f.file->f_pos;
+ typeof(lastdirent->d_off) d_off = buf.ctx.pos;
if (__put_user(d_off, &lastdirent->d_off))
error = -EFAULT;
else