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authorDavid Howells <dhowells@redhat.com>2008-02-07 00:15:45 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 08:42:28 -0800
commit2b7e5bcbd9e03f7236d2869f4261059074ea50a2 (patch)
treefcc75f21bf6a3a65ee28909919bf36f58d667720 /fs/qnx4
parenta1d4aebbfa91c55a6b0c629a9ccf6369be0c6e95 (diff)
downloadlinux-linaro-2b7e5bcbd9e03f7236d2869f4261059074ea50a2.tar.gz
iget: stop QNX4 from using iget() and read_inode()
Stop the QNX4 filesystem from using iget() and read_inode(). Replace qnx4_read_inode() with qnx4_iget(), and call that instead of iget(). qnx4_iget() then uses iget_locked() directly and returns a proper error code instead of an inode in the event of an error. qnx4_fill_super() returns any error incurred when getting the root inode instead of EINVAL. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Anders Larsen <al@alarsen.net> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/qnx4')
-rw-r--r--fs/qnx4/inode.c47
-rw-r--r--fs/qnx4/namei.c8
2 files changed, 37 insertions, 18 deletions
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 638bdb96321..b31ab78052b 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -125,7 +125,6 @@ static int qnx4_write_inode(struct inode *inode, int unused)
static void qnx4_put_super(struct super_block *sb);
static struct inode *qnx4_alloc_inode(struct super_block *sb);
static void qnx4_destroy_inode(struct inode *inode);
-static void qnx4_read_inode(struct inode *);
static int qnx4_remount(struct super_block *sb, int *flags, char *data);
static int qnx4_statfs(struct dentry *, struct kstatfs *);
@@ -133,7 +132,6 @@ static const struct super_operations qnx4_sops =
{
.alloc_inode = qnx4_alloc_inode,
.destroy_inode = qnx4_destroy_inode,
- .read_inode = qnx4_read_inode,
.put_super = qnx4_put_super,
.statfs = qnx4_statfs,
.remount_fs = qnx4_remount,
@@ -357,6 +355,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
struct inode *root;
const char *errmsg;
struct qnx4_sb_info *qs;
+ int ret = -EINVAL;
qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL);
if (!qs)
@@ -396,12 +395,14 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
}
/* does root not have inode number QNX4_ROOT_INO ?? */
- root = iget(s, QNX4_ROOT_INO * QNX4_INODES_PER_BLOCK);
- if (!root) {
+ root = qnx4_iget(s, QNX4_ROOT_INO * QNX4_INODES_PER_BLOCK);
+ if (IS_ERR(root)) {
printk("qnx4: get inode failed\n");
+ ret = PTR_ERR(root);
goto out;
}
+ ret = -ENOMEM;
s->s_root = d_alloc_root(root);
if (s->s_root == NULL)
goto outi;
@@ -417,7 +418,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
outnobh:
kfree(qs);
s->s_fs_info = NULL;
- return -EINVAL;
+ return ret;
}
static void qnx4_put_super(struct super_block *sb)
@@ -462,29 +463,38 @@ static const struct address_space_operations qnx4_aops = {
.bmap = qnx4_bmap
};
-static void qnx4_read_inode(struct inode *inode)
+struct inode *qnx4_iget(struct super_block *sb, unsigned long ino)
{
struct buffer_head *bh;
struct qnx4_inode_entry *raw_inode;
- int block, ino;
- struct super_block *sb = inode->i_sb;
- struct qnx4_inode_entry *qnx4_inode = qnx4_raw_inode(inode);
+ int block;
+ struct qnx4_inode_entry *qnx4_inode;
+ struct inode *inode;
- ino = inode->i_ino;
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ qnx4_inode = qnx4_raw_inode(inode);
inode->i_mode = 0;
QNX4DEBUG(("Reading inode : [%d]\n", ino));
if (!ino) {
- printk("qnx4: bad inode number on dev %s: %d is out of range\n",
+ printk(KERN_ERR "qnx4: bad inode number on dev %s: %lu is "
+ "out of range\n",
sb->s_id, ino);
- return;
+ iget_failed(inode);
+ return ERR_PTR(-EIO);
}
block = ino / QNX4_INODES_PER_BLOCK;
if (!(bh = sb_bread(sb, block))) {
printk("qnx4: major problem: unable to read inode from dev "
"%s\n", sb->s_id);
- return;
+ iget_failed(inode);
+ return ERR_PTR(-EIO);
}
raw_inode = ((struct qnx4_inode_entry *) bh->b_data) +
(ino % QNX4_INODES_PER_BLOCK);
@@ -515,9 +525,16 @@ static void qnx4_read_inode(struct inode *inode)
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &qnx4_aops;
qnx4_i(inode)->mmu_private = inode->i_size;
- } else
- printk("qnx4: bad inode %d on dev %s\n",ino,sb->s_id);
+ } else {
+ printk(KERN_ERR "qnx4: bad inode %lu on dev %s\n",
+ ino, sb->s_id);
+ iget_failed(inode);
+ brelse(bh);
+ return ERR_PTR(-EIO);
+ }
brelse(bh);
+ unlock_new_inode(inode);
+ return inode;
}
static struct kmem_cache *qnx4_inode_cachep;
diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c
index 733cdf01d64..775eed3a408 100644
--- a/fs/qnx4/namei.c
+++ b/fs/qnx4/namei.c
@@ -128,10 +128,12 @@ struct dentry * qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nam
}
brelse(bh);
- if ((foundinode = iget(dir->i_sb, ino)) == NULL) {
+ foundinode = qnx4_iget(dir->i_sb, ino);
+ if (IS_ERR(foundinode)) {
unlock_kernel();
- QNX4DEBUG(("qnx4: lookup->iget -> NULL\n"));
- return ERR_PTR(-EACCES);
+ QNX4DEBUG(("qnx4: lookup->iget -> error %ld\n",
+ PTR_ERR(foundinode)));
+ return ERR_CAST(foundinode);
}
out:
unlock_kernel();