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Diffstat (limited to 'fs/reiserfs/dir.c')
-rw-r--r--fs/reiserfs/dir.c77
1 files changed, 52 insertions, 25 deletions
diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c
index 1fe5cdeb5862..8d51f28d6345 100644
--- a/fs/reiserfs/dir.c
+++ b/fs/reiserfs/dir.c
@@ -59,7 +59,10 @@ static inline bool is_privroot_deh(struct inode *dir, struct reiserfs_de_head *d
int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
{
- struct cpu_key pos_key; /* key of current position in the directory (key of directory entry) */
+
+ /* key of current position in the directory (key of directory entry) */
+ struct cpu_key pos_key;
+
INITIALIZE_PATH(path_to_entry);
struct buffer_head *bh;
int item_num, entry_num;
@@ -77,21 +80,28 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
reiserfs_check_lock_depth(inode->i_sb, "readdir");
- /* form key for search the next directory entry using f_pos field of
- file structure */
+ /*
+ * form key for search the next directory entry using
+ * f_pos field of file structure
+ */
make_cpu_key(&pos_key, inode, ctx->pos ?: DOT_OFFSET, TYPE_DIRENTRY, 3);
next_pos = cpu_key_k_offset(&pos_key);
path_to_entry.reada = PATH_READA;
while (1) {
research:
- /* search the directory item, containing entry with specified key */
+ /*
+ * search the directory item, containing entry with
+ * specified key
+ */
search_res =
search_by_entry_key(inode->i_sb, &pos_key, &path_to_entry,
&de);
if (search_res == IO_ERROR) {
- // FIXME: we could just skip part of directory which could
- // not be read
+ /*
+ * FIXME: we could just skip part of directory
+ * which could not be read
+ */
ret = -EIO;
goto out;
}
@@ -109,14 +119,20 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
"vs-9005 item_num == %d, item amount == %d",
item_num, B_NR_ITEMS(bh));
- /* and entry must be not more than number of entries in the item */
+ /*
+ * and entry must be not more than number of entries
+ * in the item
+ */
RFALSE(ih_entry_count(ih) < entry_num,
"vs-9010: entry number is too big %d (%d)",
entry_num, ih_entry_count(ih));
+ /*
+ * go through all entries in the directory item beginning
+ * from the entry, that has been found
+ */
if (search_res == POSITION_FOUND
|| entry_num < ih_entry_count(ih)) {
- /* go through all entries in the directory item beginning from the entry, that has been found */
struct reiserfs_de_head *deh =
B_I_DEH(bh, ih) + entry_num;
@@ -127,16 +143,18 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
ino_t d_ino;
loff_t cur_pos = deh_offset(deh);
+ /* it is hidden entry */
if (!de_visible(deh))
- /* it is hidden entry */
continue;
d_reclen = entry_length(bh, ih, entry_num);
d_name = B_I_DEH_ENTRY_FILE_NAME(bh, ih, deh);
if (d_reclen <= 0 ||
d_name + d_reclen > bh->b_data + bh->b_size) {
- /* There is corrupted data in entry,
- * We'd better stop here */
+ /*
+ * There is corrupted data in entry,
+ * We'd better stop here
+ */
pathrelse(&path_to_entry);
ret = -EIO;
goto out;
@@ -145,10 +163,10 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
if (!d_name[d_reclen - 1])
d_reclen = strlen(d_name);
+ /* too big to send back to VFS */
if (d_reclen >
REISERFS_MAX_NAME(inode->i_sb->
s_blocksize)) {
- /* too big to send back to VFS */
continue;
}
@@ -173,10 +191,14 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
goto research;
}
}
- // Note, that we copy name to user space via temporary
- // buffer (local_buf) because filldir will block if
- // user space buffer is swapped out. At that time
- // entry can move to somewhere else
+
+ /*
+ * Note, that we copy name to user space via
+ * temporary buffer (local_buf) because
+ * filldir will block if user space buffer is
+ * swapped out. At that time entry can move to
+ * somewhere else
+ */
memcpy(local_buf, d_name, d_reclen);
/*
@@ -209,22 +231,26 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
} /* for */
}
+ /* end of directory has been reached */
if (item_num != B_NR_ITEMS(bh) - 1)
- // end of directory has been reached
goto end;
- /* item we went through is last item of node. Using right
- delimiting key check is it directory end */
+ /*
+ * item we went through is last item of node. Using right
+ * delimiting key check is it directory end
+ */
rkey = get_rkey(&path_to_entry, inode->i_sb);
if (!comp_le_keys(rkey, &MIN_KEY)) {
- /* set pos_key to key, that is the smallest and greater
- that key of the last entry in the item */
+ /*
+ * set pos_key to key, that is the smallest and greater
+ * that key of the last entry in the item
+ */
set_cpu_key_k_offset(&pos_key, next_pos);
continue;
}
+ /* end of directory has been reached */
if (COMP_SHORT_KEYS(rkey, &pos_key)) {
- // end of directory has been reached
goto end;
}
@@ -248,9 +274,10 @@ static int reiserfs_readdir(struct file *file, struct dir_context *ctx)
return reiserfs_readdir_inode(file_inode(file), ctx);
}
-/* compose directory item containing "." and ".." entries (entries are
- not aligned to 4 byte boundary) */
-/* the last four params are LE */
+/*
+ * compose directory item containing "." and ".." entries (entries are
+ * not aligned to 4 byte boundary)
+ */
void make_empty_dir_item_v1(char *body, __le32 dirid, __le32 objid,
__le32 par_dirid, __le32 par_objid)
{