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authorAl Viro <viro@zeniv.linux.org.uk>2013-05-17 21:44:42 (GMT)
committerPawel Osmialowski <p.osmialowsk@mcdsrvbld02.digital.local>2015-03-27 13:37:37 (GMT)
commit3399d9408463f85874eecb02e9e06e227222cdbe (patch)
treec5407e12b9a4dbd1400165989fd7fb06effb3152
parent16b48b2fa6edfe70b8ac64022822264b0b8f7869 (diff)
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convert affs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/affs/dir.c69
1 files changed, 24 insertions, 45 deletions
diff --git a/fs/affs/dir.c b/fs/affs/dir.c
index fd11a6d..f1eba8c 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -15,12 +15,12 @@
#include "affs.h"
-static int affs_readdir(struct file *, void *, filldir_t);
+static int affs_readdir(struct file *, struct dir_context *);
const struct file_operations affs_dir_operations = {
.read = generic_read_dir,
.llseek = generic_file_llseek,
- .readdir = affs_readdir,
+ .iterate = affs_readdir,
.fsync = affs_file_fsync,
};
@@ -40,52 +40,35 @@ const struct inode_operations affs_dir_inode_operations = {
};
static int
-affs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+affs_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 buffer_head *dir_bh;
- struct buffer_head *fh_bh;
+ struct buffer_head *dir_bh = NULL;
+ struct buffer_head *fh_bh = NULL;
unsigned char *name;
int namelen;
u32 i;
int hash_pos;
int chain_pos;
- u32 f_pos;
u32 ino;
- int stored;
- int res;
- pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",inode->i_ino,(unsigned long)filp->f_pos);
+ pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",inode->i_ino,(unsigned long)ctx->pos);
- stored = 0;
- res = -EIO;
- dir_bh = NULL;
- fh_bh = NULL;
- f_pos = filp->f_pos;
-
- if (f_pos == 0) {
- filp->private_data = (void *)0;
- if (filldir(dirent, ".", 1, f_pos, inode->i_ino, DT_DIR) < 0)
+ if (ctx->pos < 2) {
+ file->private_data = (void *)0;
+ if (!dir_emit_dots(file, ctx))
return 0;
- filp->f_pos = f_pos = 1;
- stored++;
- }
- if (f_pos == 1) {
- if (filldir(dirent, "..", 2, f_pos, parent_ino(filp->f_path.dentry), DT_DIR) < 0)
- return stored;
- filp->f_pos = f_pos = 2;
- stored++;
}
affs_lock_dir(inode);
- chain_pos = (f_pos - 2) & 0xffff;
- hash_pos = (f_pos - 2) >> 16;
+ chain_pos = (ctx->pos - 2) & 0xffff;
+ hash_pos = (ctx->pos - 2) >> 16;
if (chain_pos == 0xffff) {
affs_warning(sb, "readdir", "More than 65535 entries in chain");
chain_pos = 0;
hash_pos++;
- filp->f_pos = ((hash_pos << 16) | chain_pos) + 2;
+ ctx->pos = ((hash_pos << 16) | chain_pos) + 2;
}
dir_bh = affs_bread(sb, inode->i_ino);
if (!dir_bh)
@@ -94,8 +77,8 @@ affs_readdir(struct file *filp, void *dirent, filldir_t filldir)
/* If the directory hasn't changed since the last call to readdir(),
* we can jump directly to where we left off.
*/
- ino = (u32)(long)filp->private_data;
- if (ino && filp->f_version == inode->i_version) {
+ ino = (u32)(long)file->private_data;
+ if (ino && file->f_version == inode->i_version) {
pr_debug("AFFS: readdir() left off=%d\n", ino);
goto inside;
}
@@ -105,7 +88,7 @@ affs_readdir(struct file *filp, void *dirent, filldir_t filldir)
fh_bh = affs_bread(sb, ino);
if (!fh_bh) {
affs_error(sb, "readdir","Cannot read block %d", i);
- goto readdir_out;
+ return -EIO;
}
ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
affs_brelse(fh_bh);
@@ -119,38 +102,34 @@ affs_readdir(struct file *filp, void *dirent, filldir_t filldir)
ino = be32_to_cpu(AFFS_HEAD(dir_bh)->table[hash_pos]);
if (!ino)
continue;
- f_pos = (hash_pos << 16) + 2;
+ ctx->pos = (hash_pos << 16) + 2;
inside:
do {
fh_bh = affs_bread(sb, ino);
if (!fh_bh) {
affs_error(sb, "readdir","Cannot read block %d", ino);
- goto readdir_done;
+ break;
}
namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
name = AFFS_TAIL(sb, fh_bh)->name + 1;
pr_debug("AFFS: readdir(): filldir(\"%.*s\", ino=%u), hash=%d, f_pos=%x\n",
- namelen, name, ino, hash_pos, f_pos);
- if (filldir(dirent, name, namelen, f_pos, ino, DT_UNKNOWN) < 0)
+ namelen, name, ino, hash_pos, (u32)ctx->pos);
+ if (!dir_emit(ctx, name, namelen, ino, DT_UNKNOWN))
goto readdir_done;
- stored++;
- f_pos++;
+ ctx->pos++;
ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
affs_brelse(fh_bh);
fh_bh = NULL;
} while (ino);
}
readdir_done:
- filp->f_pos = f_pos;
- filp->f_version = inode->i_version;
- filp->private_data = (void *)(long)ino;
- res = stored;
+ file->f_version = inode->i_version;
+ file->private_data = (void *)(long)ino;
readdir_out:
affs_brelse(dir_bh);
affs_brelse(fh_bh);
affs_unlock_dir(inode);
- pr_debug("AFFS: readdir()=%d\n", stored);
- return res;
+ return 0;
}