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[readdir] simple local unixlike: switch to ->iterate()

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ext2, ufs, minix, sysv

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2013-05-15 18:51:49 -04:00
parent bb6f619b3a
commit 80886298c0
4 changed files with 59 additions and 75 deletions
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fs/ufs/dir.c
+12 -16
View File
@@ -430,16 +430,16 @@ ufs_validate_entry(struct super_block *sb, char *base,
* This is blatantly stolen from ext2fs
*/
static int
ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
ufs_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 = ufs_dir_pages(inode);
unsigned chunk_mask = ~(UFS_SB(sb)->s_uspi->s_dirblksize - 1);
int need_revalidate = filp->f_version != inode->i_version;
int need_revalidate = file->f_version != inode->i_version;
unsigned flags = UFS_SB(sb)->s_flags;
UFSD("BEGIN\n");
@@ -457,16 +457,16 @@ ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
ufs_error(sb, __func__,
"bad page in #%lu",
inode->i_ino);
filp->f_pos += PAGE_CACHE_SIZE - offset;
ctx->pos += PAGE_CACHE_SIZE - offset;
return -EIO;
}
kaddr = page_address(page);
if (unlikely(need_revalidate)) {
if (offset) {
offset = ufs_validate_entry(sb, 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 ufs_dir_entry *)(kaddr+offset);
@@ -479,11 +479,8 @@ ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
return -EIO;
}
if (de->d_ino) {
int over;
unsigned char d_type = DT_UNKNOWN;
offset = (char *)de - kaddr;
UFSD("filldir(%s,%u)\n", de->d_name,
fs32_to_cpu(sb, de->d_ino));
UFSD("namlen %u\n", ufs_get_de_namlen(sb, de));
@@ -491,16 +488,15 @@ ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if ((flags & UFS_DE_MASK) == UFS_DE_44BSD)
d_type = de->d_u.d_44.d_type;
over = filldir(dirent, de->d_name,
if (!dir_emit(ctx, de->d_name,
ufs_get_de_namlen(sb, de),
(n<<PAGE_CACHE_SHIFT) | offset,
fs32_to_cpu(sb, de->d_ino), d_type);
if (over) {
fs32_to_cpu(sb, de->d_ino),
d_type)) {
ufs_put_page(page);
return 0;
}
}
filp->f_pos += fs16_to_cpu(sb, de->d_reclen);
ctx->pos += fs16_to_cpu(sb, de->d_reclen);
}
ufs_put_page(page);
}
@@ -660,7 +656,7 @@ not_empty:
const struct file_operations ufs_dir_operations = {
.read = generic_read_dir,
.readdir = ufs_readdir,
.iterate = ufs_readdir,
.fsync = generic_file_fsync,
.llseek = generic_file_llseek,
};