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Subject[PATCH 19/31] IGET: Stop ISOFS from using read_inode() [try #3]
Date
Stop the ISOFS filesystem from using read_inode().  Make isofs_read_inode()
return an error code, and make isofs_iget() pass it on.

Signed-off-by: David Howells <dhowells@redhat.com>
---
fs/isofs/inode.c | 25 +++++++++++++++++--------
1 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 043b470..28d990b 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -54,7 +54,7 @@ static void isofs_put_super(struct super_block *sb)
return;
}

-static void isofs_read_inode(struct inode *);
+static int isofs_read_inode(struct inode *);
static int isofs_statfs (struct dentry *, struct kstatfs *);

static struct kmem_cache *isofs_inode_cachep;
@@ -107,7 +107,6 @@ static int isofs_remount(struct super_block *sb, int *flags, char *data)
static const struct super_operations isofs_sops = {
.alloc_inode = isofs_alloc_inode,
.destroy_inode = isofs_destroy_inode,
- .read_inode = isofs_read_inode,
.put_super = isofs_put_super,
.statfs = isofs_statfs,
.remount_fs = isofs_remount,
@@ -1186,7 +1185,7 @@ out_toomany:
goto out;
}

-static void isofs_read_inode(struct inode *inode)
+static int isofs_read_inode(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct isofs_sb_info *sbi = ISOFS_SB(sb);
@@ -1199,6 +1198,7 @@ static void isofs_read_inode(struct inode *inode)
unsigned int de_len;
unsigned long offset;
struct iso_inode_info *ei = ISOFS_I(inode);
+ int ret = -EIO;

block = ei->i_iget5_block;
bh = sb_bread(inode->i_sb, block);
@@ -1216,6 +1216,7 @@ static void isofs_read_inode(struct inode *inode)
tmpde = kmalloc(de_len, GFP_KERNEL);
if (tmpde == NULL) {
printk(KERN_INFO "%s: out of memory\n", __func__);
+ ret = -ENOMEM;
goto fail;
}
memcpy(tmpde, bh->b_data + offset, frag1);
@@ -1259,8 +1260,10 @@ static void isofs_read_inode(struct inode *inode)

ei->i_section_size = isonum_733(de->size);
if (de->flags[-high_sierra] & 0x80) {
- if(isofs_read_level3_size(inode))
+ ret = isofs_read_level3_size(inode);
+ if (ret < 0)
goto fail;
+ ret = -EIO;
} else {
ei->i_next_section_block = 0;
ei->i_next_section_offset = 0;
@@ -1346,16 +1349,16 @@ static void isofs_read_inode(struct inode *inode)
/* XXX - parse_rock_ridge_inode() had already set i_rdev. */
init_special_inode(inode, inode->i_mode, inode->i_rdev);

+ ret = 0;
out:
kfree(tmpde);
if (bh)
brelse(bh);
- return;
+ return ret;

out_badread:
printk(KERN_WARNING "ISOFS: unable to read i-node block\n");
fail:
- make_bad_inode(inode);
goto out;
}

@@ -1394,6 +1397,7 @@ struct inode *isofs_iget(struct super_block *sb,
unsigned long hashval;
struct inode *inode;
struct isofs_iget5_callback_data data;
+ long ret;

if (offset >= 1ul << sb->s_blocksize_bits)
return NULL;
@@ -1407,8 +1411,13 @@ struct inode *isofs_iget(struct super_block *sb,
&isofs_iget5_set, &data);

if (inode && (inode->i_state & I_NEW)) {
- sb->s_op->read_inode(inode);
- unlock_new_inode(inode);
+ ret = isofs_read_inode(inode);
+ if (ret < 0) {
+ iget_failed(inode);
+ inode = ERR_PTR(ret);
+ } else {
+ unlock_new_inode(inode);
+ }
}

return inode;
-
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