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fsnotify: use unsigned char * for dentry->d_name.name

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fsnotify was using char * when it passed around the d_name.name string
internally but it is actually an unsigned char *.  This patch switches
fsnotify to use unsigned and should silence some pointer signess warnings
which have popped out of xfs.  I do not add -Wpointer-sign to the fsnotify
code as there are still issues with kstrdup and strlen which would pop
out needless warnings.

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2010-02-08 12:53:52 -05:00
parent 43ed7e16a8
commit 59b0df211b
5 changed files with 17 additions and 15 deletions
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2
fs/namei.c
View File

@ -2635,7 +2635,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
{
int error;
int is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
const char *old_name;
const unsigned char *old_name;
if (old_dentry->d_inode == new_dentry->d_inode)
return 0;

5
fs/notify/fsnotify.c
View File

@ -171,7 +171,7 @@ void __fsnotify_flush_ignored_mask(struct inode *inode, void *data, int data_is)
static void send_to_group(struct fsnotify_group *group, struct inode *to_tell,
struct vfsmount *mnt, __u32 mask, void *data,
int data_is, u32 cookie, const char *file_name,
int data_is, u32 cookie, const unsigned char *file_name,
struct fsnotify_event **event)
{
if (!group->ops->should_send_event(group, to_tell, mnt, mask,
@ -206,7 +206,8 @@ static bool needed_by_vfsmount(__u32 test_mask, struct vfsmount *mnt)
* out to all of the registered fsnotify_group. Those groups can then use the
* notification event in whatever means they feel necessary.
*/
void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const char *file_name, u32 cookie)
void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
const unsigned char *file_name, u32 cookie)
{
struct fsnotify_group *group;
struct fsnotify_event *event = NULL;

4
fs/notify/notification.c
View File

@ -370,8 +370,8 @@ struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event)
* @name the filename, if available
*/
struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, void *data,
int data_type, const char *name, u32 cookie,
gfp_t gfp)
int data_type, const unsigned char *name,
u32 cookie, gfp_t gfp)
{
struct fsnotify_event *event;

12
include/linux/fsnotify.h
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@ -59,14 +59,14 @@ static inline void fsnotify_link_count(struct inode *inode)
* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
*/
static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
const char *old_name,
const unsigned char *old_name,
int isdir, struct inode *target, struct dentry *moved)
{
struct inode *source = moved->d_inode;
u32 fs_cookie = fsnotify_get_cookie();
__u32 old_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_FROM);
__u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO);
const char *new_name = moved->d_name.name;
const unsigned char *new_name = moved->d_name.name;
if (old_dir == new_dir)
old_dir_mask |= FS_DN_RENAME;
@ -290,7 +290,7 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
/*
* fsnotify_oldname_init - save off the old filename before we change it
*/
static inline const char *fsnotify_oldname_init(const char *name)
static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
{
return kstrdup(name, GFP_KERNEL);
}
@ -298,19 +298,19 @@ static inline const char *fsnotify_oldname_init(const char *name)
/*
* fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
*/
static inline void fsnotify_oldname_free(const char *old_name)
static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
kfree(old_name);
}
#else /* CONFIG_FSNOTIFY */
static inline const char *fsnotify_oldname_init(const char *name)
static inline const char *fsnotify_oldname_init(const unsigned char *name)
{
return NULL;
}
static inline void fsnotify_oldname_free(const char *old_name)
static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
}

9
include/linux/fsnotify_backend.h
View File

@ -220,7 +220,7 @@ struct fsnotify_event {
__u32 mask; /* the type of access, bitwise OR for FS_* event types */
u32 sync_cookie; /* used to corrolate events, namely inotify mv events */
char *file_name;
const unsigned char *file_name;
size_t name_len;
struct pid *tgid;
@ -283,7 +283,7 @@ struct fsnotify_mark {
/* main fsnotify call to send events */
extern void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
const char *name, u32 cookie);
const unsigned char *name, u32 cookie);
extern void __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask);
extern void __fsnotify_inode_delete(struct inode *inode);
extern void __fsnotify_vfsmount_delete(struct vfsmount *mnt);
@ -402,7 +402,8 @@ extern void fsnotify_unmount_inodes(struct list_head *list);
/* put here because inotify does some weird stuff when destroying watches */
extern struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask,
void *data, int data_is, const char *name,
void *data, int data_is,
const unsigned char *name,
u32 cookie, gfp_t gfp);
/* fanotify likes to change events after they are on lists... */
@ -413,7 +414,7 @@ extern int fsnotify_replace_event(struct fsnotify_event_holder *old_holder,
#else
static inline void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
const char *name, u32 cookie)
const unsigned char *name, u32 cookie)
{}
static inline void __fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask)