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fsnotify: refactor fsnotify_parent()/fsnotify() paired calls when event is on path

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A wrapper function fsnotify_path() has been defined to simplify the
paired calls to fsnotify_parent()/fsnotify(). All hooks that made use
these paired calls and passed FSNOTIFY_EVENT_PATH have been updated
accordingly.

Signed-off-by: Matthew Bobrowski <mbobrowski@mbobrowski.org>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Matthew Bobrowski 2018-11-08 14:10:03 +11:00 committed by Jan Kara
parent 9b076f1c0f
commit a704bba5e3
1 changed files with 22 additions and 20 deletions
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42
include/linux/fsnotify.h
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@ -26,13 +26,26 @@ static inline int fsnotify_parent(const struct path *path, struct dentry *dentry
return __fsnotify_parent(path, dentry, mask);
}
/*
* Simple wrapper to consolidate calls fsnotify_parent()/fsnotify() when
* an event is on a path.
*/
static inline int fsnotify_path(struct inode *inode, const struct path *path,
__u32 mask)
{
int ret = fsnotify_parent(path, NULL, mask);
if (ret)
return ret;
return fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
/* simple call site for access decisions */
static inline int fsnotify_perm(struct file *file, int mask)
{
const struct path *path = &file->f_path;
struct inode *inode = file_inode(file);
__u32 fsnotify_mask = 0;
int ret;
if (file->f_mode & FMODE_NONOTIFY)
return 0;
@ -45,11 +58,7 @@ static inline int fsnotify_perm(struct file *file, int mask)
else
BUG();
ret = fsnotify_parent(path, NULL, fsnotify_mask);
if (ret)
return ret;
return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
return fsnotify_path(inode, path, fsnotify_mask);
}
/*
@ -180,10 +189,8 @@ static inline void fsnotify_access(struct file *file)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
if (!(file->f_mode & FMODE_NONOTIFY)) {
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
if (!(file->f_mode & FMODE_NONOTIFY))
fsnotify_path(inode, path, mask);
}
/*
@ -198,10 +205,8 @@ static inline void fsnotify_modify(struct file *file)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
if (!(file->f_mode & FMODE_NONOTIFY)) {
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
if (!(file->f_mode & FMODE_NONOTIFY))
fsnotify_path(inode, path, mask);
}
/*
@ -218,8 +223,7 @@ static inline void fsnotify_open(struct file *file)
if (file->f_flags & __FMODE_EXEC)
mask |= FS_OPEN_EXEC;
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
fsnotify_path(inode, path, mask);
}
/*
@ -235,10 +239,8 @@ static inline void fsnotify_close(struct file *file)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
if (!(file->f_mode & FMODE_NONOTIFY)) {
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
if (!(file->f_mode & FMODE_NONOTIFY))
fsnotify_path(inode, path, mask);
}
/*