From e7b34019606ab1dd06196635e931b0c302799228 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Mon, 24 Sep 2007 14:25:27 -0700 Subject: [PATCH] ocfs2: Optionally return filldir errors Modify ocfs2_dir_foreach_blk() to optionally return any error from the filldir callback. This way ocfs2_dirforeach() can terminate early, as opposed to always passing through the entire directory. This fixes a bug introduced during a previous code refactor where ocfs2_empty_dir() would loop infinitely. Signed-off-by: Mark Fasheh --- fs/ocfs2/dir.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index e15351338417..7453b70c1a19 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -588,7 +588,7 @@ bail: static int ocfs2_dir_foreach_blk_id(struct inode *inode, unsigned long *f_version, loff_t *f_pos, void *priv, - filldir_t filldir) + filldir_t filldir, int *filldir_err) { int ret, i, filldir_ret; unsigned long offset = *f_pos; @@ -659,8 +659,11 @@ revalidate: *f_pos, le64_to_cpu(de->inode), d_type); - if (filldir_ret) + if (filldir_ret) { + if (filldir_err) + *filldir_err = filldir_ret; break; + } if (version != *f_version) goto revalidate; } @@ -676,7 +679,7 @@ out: static int ocfs2_dir_foreach_blk_el(struct inode *inode, unsigned long *f_version, loff_t *f_pos, void *priv, - filldir_t filldir) + filldir_t filldir, int *filldir_err) { int error = 0; unsigned long offset, blk, last_ra_blk = 0; @@ -775,8 +778,11 @@ revalidate: *f_pos, le64_to_cpu(de->inode), d_type); - if (error) + if (error) { + if (filldir_err) + *filldir_err = error; break; + } if (version != *f_version) goto revalidate; stored ++; @@ -793,13 +799,15 @@ out: } static int ocfs2_dir_foreach_blk(struct inode *inode, unsigned long *f_version, - loff_t *f_pos, void *priv, filldir_t filldir) + loff_t *f_pos, void *priv, filldir_t filldir, + int *filldir_err) { if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) return ocfs2_dir_foreach_blk_id(inode, f_version, f_pos, priv, - filldir); + filldir, filldir_err); - return ocfs2_dir_foreach_blk_el(inode, f_version, f_pos, priv, filldir); + return ocfs2_dir_foreach_blk_el(inode, f_version, f_pos, priv, filldir, + filldir_err); } /* @@ -809,16 +817,19 @@ static int ocfs2_dir_foreach_blk(struct inode *inode, unsigned long *f_version, int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv, filldir_t filldir) { - int ret = 0; + int ret = 0, filldir_err = 0; unsigned long version = inode->i_version; while (*f_pos < i_size_read(inode)) { ret = ocfs2_dir_foreach_blk(inode, &version, f_pos, priv, - filldir); - if (ret) + filldir, &filldir_err); + if (ret || filldir_err) break; } + if (ret > 0) + ret = -EIO; + return 0; } @@ -852,7 +863,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir) } error = ocfs2_dir_foreach_blk(inode, &filp->f_version, &filp->f_pos, - dirent, filldir); + dirent, filldir, NULL); ocfs2_meta_unlock(inode, lock_level); -- 2.20.1