[PATCH 4/9 V3] fibmap: Use bmap instead of ->bmap method in ioctl_fibmap

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Now we have the possibility of proper error return in bmap, use bmap()
function in ioctl_fibmap() instead of calling ->bmap method directly.

V3:
	- Rename usr_blk to ur_block

V2:
	- Use a local sector_t variable to asign the block number
	  instead of using direct casting.
Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
 fs/ioctl.c | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/fs/ioctl.c b/fs/ioctl.c
index fef3a6bf7c78..2c787ca6fa42 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -53,19 +53,26 @@ EXPORT_SYMBOL(vfs_ioctl);
 
 static int ioctl_fibmap(struct file *filp, int __user *p)
 {
-	struct address_space *mapping = filp->f_mapping;
-	int res, block;
+	struct inode *inode = file_inode(filp);
+	int error, ur_block;
+	sector_t block;
 
-	/* do we support this mess? */
-	if (!mapping->a_ops->bmap)
-		return -EINVAL;
 	if (!capable(CAP_SYS_RAWIO))
 		return -EPERM;
-	res = get_user(block, p);
-	if (res)
-		return res;
-	res = mapping->a_ops->bmap(mapping, block);
-	return put_user(res, p);
+
+	error = get_user(ur_block, p);
+	if (error)
+		return error;
+
+	block = ur_block;
+	error = bmap(inode, &block);
+	if (error)
+		return error;
+	ur_block = block;
+
+	error = put_user(ur_block, p);
+
+	return error;
 }
 
 /**
-- 
2.17.2




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux