The interface for fcntl expects the argument passed for the command
F_SETLEASE to be of type int. The current code wrongly treats it as
a long. In order to avoid access to undefined bits, we should explicitly
cast the argument to int.
Cc: Kevin Brodsky <[email protected]>
Cc: Szabolcs Nagy <[email protected]>
Cc: "Theodore Ts'o" <[email protected]>
Cc: David Laight <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Jeff Layton <[email protected]>
Cc: Chuck Lever <[email protected]>
Cc: [email protected]
Cc: Trond Myklebust <[email protected]>
Cc: Anna Schumaker <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Luca Vizzarro <[email protected]>
---
fs/cifs/cifsfs.c | 2 +-
fs/libfs.c | 2 +-
fs/locks.c | 20 ++++++++++----------
fs/nfs/nfs4_fs.h | 2 +-
fs/nfs/nfs4file.c | 2 +-
fs/nfs/nfs4proc.c | 4 ++--
include/linux/filelock.h | 12 ++++++------
include/linux/fs.h | 4 ++--
8 files changed, 24 insertions(+), 24 deletions(-)
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ac9034fce409..ad5b2cfe8320 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1069,7 +1069,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
}
static int
-cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv)
+cifs_setlease(struct file *file, int arg, struct file_lock **lease, void **priv)
{
/*
* Note that this is called by vfs setlease with i_lock held to
diff --git a/fs/libfs.c b/fs/libfs.c
index 4eda519c3002..1c451e76560c 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1274,7 +1274,7 @@ EXPORT_SYMBOL(alloc_anon_inode);
* All arguments are ignored and it just returns -EINVAL.
*/
int
-simple_nosetlease(struct file *filp, long arg, struct file_lock **flp,
+simple_nosetlease(struct file *filp, int arg, struct file_lock **flp,
void **priv)
{
return -EINVAL;
diff --git a/fs/locks.c b/fs/locks.c
index df8b26a42524..265b5190db3e 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -438,7 +438,7 @@ static void flock_make_lock(struct file *filp, struct file_lock *fl, int type)
fl->fl_end = OFFSET_MAX;
}
-static int assign_type(struct file_lock *fl, long type)
+static int assign_type(struct file_lock *fl, int type)
{
switch (type) {
case F_RDLCK:
@@ -549,7 +549,7 @@ static const struct lock_manager_operations lease_manager_ops = {
/*
* Initialize a lease, use the default lock manager operations
*/
-static int lease_init(struct file *filp, long type, struct file_lock *fl)
+static int lease_init(struct file *filp, int type, struct file_lock *fl)
{
if (assign_type(fl, type) != 0)
return -EINVAL;
@@ -567,7 +567,7 @@ static int lease_init(struct file *filp, long type, struct file_lock *fl)
}
/* Allocate a file_lock initialised to this type of lease */
-static struct file_lock *lease_alloc(struct file *filp, long type)
+static struct file_lock *lease_alloc(struct file *filp, int type)
{
struct file_lock *fl = locks_alloc_lock();
int error = -ENOMEM;
@@ -1666,7 +1666,7 @@ int fcntl_getlease(struct file *filp)
* conflict with the lease we're trying to set.
*/
static int
-check_conflicting_open(struct file *filp, const long arg, int flags)
+check_conflicting_open(struct file *filp, const int arg, int flags)
{
struct inode *inode = file_inode(filp);
int self_wcount = 0, self_rcount = 0;
@@ -1701,7 +1701,7 @@ check_conflicting_open(struct file *filp, const long arg, int flags)
}
static int
-generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **priv)
+generic_add_lease(struct file *filp, int arg, struct file_lock **flp, void **priv)
{
struct file_lock *fl, *my_fl = NULL, *lease;
struct inode *inode = file_inode(filp);
@@ -1859,7 +1859,7 @@ static int generic_delete_lease(struct file *filp, void *owner)
* The (input) flp->fl_lmops->lm_break function is required
* by break_lease().
*/
-int generic_setlease(struct file *filp, long arg, struct file_lock **flp,
+int generic_setlease(struct file *filp, int arg, struct file_lock **flp,
void **priv)
{
struct inode *inode = file_inode(filp);
@@ -1906,7 +1906,7 @@ lease_notifier_chain_init(void)
}
static inline void
-setlease_notifier(long arg, struct file_lock *lease)
+setlease_notifier(int arg, struct file_lock *lease)
{
if (arg != F_UNLCK)
srcu_notifier_call_chain(&lease_notifier_chain, arg, lease);
@@ -1942,7 +1942,7 @@ EXPORT_SYMBOL_GPL(lease_unregister_notifier);
* may be NULL if the lm_setup operation doesn't require it.
*/
int
-vfs_setlease(struct file *filp, long arg, struct file_lock **lease, void **priv)
+vfs_setlease(struct file *filp, int arg, struct file_lock **lease, void **priv)
{
if (lease)
setlease_notifier(arg, *lease);
@@ -1953,7 +1953,7 @@ vfs_setlease(struct file *filp, long arg, struct file_lock **lease, void **priv)
}
EXPORT_SYMBOL_GPL(vfs_setlease);
-static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg)
+static int do_fcntl_add_lease(unsigned int fd, struct file *filp, int arg)
{
struct file_lock *fl;
struct fasync_struct *new;
@@ -1988,7 +1988,7 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg)
* Note that you also need to call %F_SETSIG to
* receive a signal when the lease is broken.
*/
-int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
+int fcntl_setlease(unsigned int fd, struct file *filp, int arg)
{
if (arg == F_UNLCK)
return vfs_setlease(filp, F_UNLCK, NULL, (void **)&filp);
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 4c9f8bd866ab..47c5c1f86d66 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -328,7 +328,7 @@ extern int update_open_stateid(struct nfs4_state *state,
const nfs4_stateid *open_stateid,
const nfs4_stateid *deleg_stateid,
fmode_t fmode);
-extern int nfs4_proc_setlease(struct file *file, long arg,
+extern int nfs4_proc_setlease(struct file *file, int arg,
struct file_lock **lease, void **priv);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 2563ed8580f3..26c2d3539d75 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -438,7 +438,7 @@ void nfs42_ssc_unregister_ops(void)
}
#endif /* CONFIG_NFS_V4_2 */
-static int nfs4_setlease(struct file *file, long arg, struct file_lock **lease,
+static int nfs4_setlease(struct file *file, int arg, struct file_lock **lease,
void **priv)
{
return nfs4_proc_setlease(file, arg, lease, priv);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5607b1e2b821..ba59ad558209 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7559,7 +7559,7 @@ static int nfs4_delete_lease(struct file *file, void **priv)
return generic_setlease(file, F_UNLCK, NULL, priv);
}
-static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease,
+static int nfs4_add_lease(struct file *file, int arg, struct file_lock **lease,
void **priv)
{
struct inode *inode = file_inode(file);
@@ -7577,7 +7577,7 @@ static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease,
return -EAGAIN;
}
-int nfs4_proc_setlease(struct file *file, long arg, struct file_lock **lease,
+int nfs4_proc_setlease(struct file *file, int arg, struct file_lock **lease,
void **priv)
{
switch (arg) {
diff --git a/include/linux/filelock.h b/include/linux/filelock.h
index efcdd1631d9b..95e868e09e29 100644
--- a/include/linux/filelock.h
+++ b/include/linux/filelock.h
@@ -144,7 +144,7 @@ int fcntl_setlk64(unsigned int, struct file *, unsigned int,
struct flock64 *);
#endif
-int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
+int fcntl_setlease(unsigned int fd, struct file *filp, int arg);
int fcntl_getlease(struct file *filp);
/* fs/locks.c */
@@ -167,8 +167,8 @@ bool vfs_inode_has_locks(struct inode *inode);
int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
void lease_get_mtime(struct inode *, struct timespec64 *time);
-int generic_setlease(struct file *, long, struct file_lock **, void **priv);
-int vfs_setlease(struct file *, long, struct file_lock **, void **);
+int generic_setlease(struct file *, int, struct file_lock **, void **priv);
+int vfs_setlease(struct file *, int, struct file_lock **, void **);
int lease_modify(struct file_lock *, int, struct list_head *);
struct notifier_block;
@@ -213,7 +213,7 @@ static inline int fcntl_setlk64(unsigned int fd, struct file *file,
return -EACCES;
}
#endif
-static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
+static inline int fcntl_setlease(unsigned int fd, struct file *filp, int arg)
{
return -EINVAL;
}
@@ -306,13 +306,13 @@ static inline void lease_get_mtime(struct inode *inode,
return;
}
-static inline int generic_setlease(struct file *filp, long arg,
+static inline int generic_setlease(struct file *filp, int arg,
struct file_lock **flp, void **priv)
{
return -EINVAL;
}
-static inline int vfs_setlease(struct file *filp, long arg,
+static inline int vfs_setlease(struct file *filp, int arg,
struct file_lock **lease, void **priv)
{
return -EINVAL;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8da79822dbba..0c9367980636 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1779,7 +1779,7 @@ struct file_operations {
int (*flock) (struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
- int (*setlease)(struct file *, long, struct file_lock **, void **);
+ int (*setlease)(struct file *, int, struct file_lock **, void **);
long (*fallocate)(struct file *file, int mode, loff_t offset,
loff_t len);
void (*show_fdinfo)(struct seq_file *m, struct file *f);
@@ -2914,7 +2914,7 @@ extern int simple_write_begin(struct file *file, struct address_space *mapping,
extern const struct address_space_operations ram_aops;
extern int always_delete_dentry(const struct dentry *);
extern struct inode *alloc_anon_inode(struct super_block *);
-extern int simple_nosetlease(struct file *, long, struct file_lock **, void **);
+extern int simple_nosetlease(struct file *, int, struct file_lock **, void **);
extern const struct dentry_operations simple_dentry_operations;
extern struct dentry *simple_lookup(struct inode *, struct dentry *, unsigned int flags);
--
2.34.1
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.