Handle errors in ISOFS correctly.
Signed-off-by: David Howells <[email protected]>
---
fs/isofs/inode.c | 22 +++++++++++++---------
1 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index a854831..4d76594 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -841,7 +841,7 @@ root_found:
sbi->s_joliet_level = joliet_level;
/* check the root inode */
- if (!inode)
+ if (IS_ERR(inode))
goto out_no_root;
if (!inode->i_op)
goto out_bad_root;
@@ -875,11 +875,12 @@ root_found:
*/
out_bad_root:
printk(KERN_WARNING "%s: root inode not initialized\n", __func__);
- goto out_iput;
-out_no_root:
- printk(KERN_WARNING "%s: get root inode failed\n", __func__);
out_iput:
iput(inode);
+ goto out_no_inode;
+out_no_root:
+ printk(KERN_WARNING "%s: get root inode failed\n", __func__);
+out_no_inode:
#ifdef CONFIG_JOLIET
if (sbi->s_nls_iocharset)
unload_nls(sbi->s_nls_iocharset);
@@ -929,7 +930,7 @@ static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
/*
* Get a set of blocks; filling in buffer_heads if already allocated
* or getblk() if they are not. Returns the number of blocks inserted
- * (0 == error.)
+ * (-ve == error.)
*/
int isofs_get_blocks(struct inode *inode, sector_t iblock_s,
struct buffer_head **bh, unsigned long nblocks)
@@ -939,11 +940,12 @@ int isofs_get_blocks(struct inode *inode, sector_t iblock_s,
unsigned int firstext;
unsigned long nextblk, nextoff;
long iblock = (long)iblock_s;
- int section, rv;
+ int section, rv, error;
struct iso_inode_info *ei = ISOFS_I(inode);
lock_kernel();
+ error = -EIO;
rv = 0;
if (iblock < 0 || iblock != iblock_s) {
printk(KERN_DEBUG "%s: block number too large\n", __func__);
@@ -982,8 +984,10 @@ int isofs_get_blocks(struct inode *inode, sector_t iblock_s,
offset += sect_size;
ninode = isofs_iget(inode->i_sb, nextblk, nextoff);
- if (!ninode)
+ if (IS_ERR(ninode)) {
+ error = PTR_ERR(ninode);
goto abort;
+ }
firstext = ISOFS_I(ninode)->i_first_extent;
sect_size = ISOFS_I(ninode)->i_section_size >> ISOFS_BUFFER_BITS(ninode);
nextblk = ISOFS_I(ninode)->i_next_section_block;
@@ -1016,7 +1020,7 @@ int isofs_get_blocks(struct inode *inode, sector_t iblock_s,
abort:
unlock_kernel();
- return rv;
+ return rv != 0 ? rv : error;
}
/*
@@ -1030,7 +1034,7 @@ static int isofs_get_block(struct inode *inode, sector_t iblock,
return -EROFS;
}
- return isofs_get_blocks(inode, iblock, &bh_result, 1) ? 0 : -EIO;
+ return isofs_get_blocks(inode, iblock, &bh_result, 1);
}
static int isofs_bmap(struct inode *inode, sector_t block)
--
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