hfsplus: fix HFSPLUS_I calling convention
HFSPLUS_I doesn't return a pointer to the hfsplus-specific inode
information like all other FOO_I macros, but dereference the pointer in a way
that made it look like a direct struct derefence. This only works as long
as the HFSPLUS_I macro is used directly and prevents us from keepig a local
hfsplus_inode_info pointer. Fix the calling convention and introduce a local
hip variable in all functions that use it constantly.
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 66dd64b..c9ac443 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -23,13 +23,14 @@
static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
{
struct inode *inode = file->f_path.dentry->d_inode;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags = 0;
- if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
+ if (hip->rootflags & HFSPLUS_FLG_IMMUTABLE)
flags |= FS_IMMUTABLE_FL;
- if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
+ if (hip->rootflags & HFSPLUS_FLG_APPEND)
flags |= FS_APPEND_FL;
- if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
+ if (hip->userflags & HFSPLUS_FLG_NODUMP)
flags |= FS_NODUMP_FL;
return put_user(flags, user_flags);
@@ -38,6 +39,7 @@
static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
{
struct inode *inode = file->f_path.dentry->d_inode;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags;
int err = 0;
@@ -58,7 +60,7 @@
mutex_lock(&inode->i_mutex);
if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
- HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
+ hip->rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
if (!capable(CAP_LINUX_IMMUTABLE)) {
err = -EPERM;
goto out_unlock_inode;
@@ -72,22 +74,22 @@
}
if (flags & FS_IMMUTABLE_FL) {
inode->i_flags |= S_IMMUTABLE;
- HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
+ hip->rootflags |= HFSPLUS_FLG_IMMUTABLE;
} else {
inode->i_flags &= ~S_IMMUTABLE;
- HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
+ hip->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
}
if (flags & FS_APPEND_FL) {
inode->i_flags |= S_APPEND;
- HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
+ hip->rootflags |= HFSPLUS_FLG_APPEND;
} else {
inode->i_flags &= ~S_APPEND;
- HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
+ hip->rootflags &= ~HFSPLUS_FLG_APPEND;
}
if (flags & FS_NODUMP_FL)
- HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
+ hip->userflags |= HFSPLUS_FLG_NODUMP;
else
- HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
+ hip->userflags &= ~HFSPLUS_FLG_NODUMP;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);