Release 4.12 include/linux/fsnotify.h
#ifndef _LINUX_FS_NOTIFY_H
#define _LINUX_FS_NOTIFY_H
/*
* include/linux/fsnotify.h - generic hooks for filesystem notification, to
* reduce in-source duplication from both dnotify and inotify.
*
* We don't compile any of this away in some complicated menagerie of ifdefs.
* Instead, we rely on the code inside to optimize away as needed.
*
* (C) Copyright 2005 Robert Love
*/
#include <linux/fsnotify_backend.h>
#include <linux/audit.h>
#include <linux/slab.h>
#include <linux/bug.h>
/* Notify this dentry's parent about a child's events. */
static inline int fsnotify_parent(const struct path *path, struct dentry *dentry, __u32 mask)
{
if (!dentry)
dentry = path->dentry;
return __fsnotify_parent(path, dentry, mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 35 | 83.33% | 3 | 50.00% |
| Linus Torvalds | 4 | 9.52% | 1 | 16.67% |
| Andreas Gruenbacher | 2 | 4.76% | 1 | 16.67% |
| Al Viro | 1 | 2.38% | 1 | 16.67% |
| Total | 42 | 100.00% | 6 | 100.00% |
/* simple call site for access decisions */
static inline int fsnotify_perm(struct file *file, int mask)
{
const struct path *path = &file->f_path;
/*
* Do not use file_inode() here or anywhere in this file to get the
* inode. That would break *notity on overlayfs.
*/
struct inode *inode = path->dentry->d_inode;
__u32 fsnotify_mask = 0;
int ret;
if (file->f_mode & FMODE_NONOTIFY)
return 0;
if (!(mask & (MAY_READ | MAY_OPEN)))
return 0;
if (mask & MAY_OPEN)
fsnotify_mask = FS_OPEN_PERM;
else if (mask & MAY_READ)
fsnotify_mask = FS_ACCESS_PERM;
else
BUG();
ret = fsnotify_parent(path, NULL, fsnotify_mask);
if (ret)
return ret;
return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 114 | 86.36% | 4 | 57.14% |
| Linus Torvalds | 11 | 8.33% | 1 | 14.29% |
| Aihua Zhang | 6 | 4.55% | 1 | 14.29% |
| Al Viro | 1 | 0.76% | 1 | 14.29% |
| Total | 132 | 100.00% | 7 | 100.00% |
/*
* fsnotify_link_count - inode's link count changed
*/
static inline void fsnotify_link_count(struct inode *inode)
{
fsnotify(inode, FS_ATTRIB, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 27 | 100.00% | 3 | 100.00% |
| Total | 27 | 100.00% | 3 | 100.00% |
/*
* 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 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 unsigned char *new_name = moved->d_name.name;
if (old_dir == new_dir)
old_dir_mask |= FS_DN_RENAME;
if (isdir) {
old_dir_mask |= FS_ISDIR;
new_dir_mask |= FS_ISDIR;
}
fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
fs_cookie);
fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
fs_cookie);
if (target)
fsnotify_link_count(target);
if (source)
fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 89 | 51.15% | 6 | 40.00% |
| Robert Love | 36 | 20.69% | 1 | 6.67% |
| Al Viro | 22 | 12.64% | 2 | 13.33% |
| John McCutchan | 16 | 9.20% | 2 | 13.33% |
| Amy Griffis | 5 | 2.87% | 1 | 6.67% |
| Jeff Layton | 4 | 2.30% | 2 | 13.33% |
| Jan Kara | 2 | 1.15% | 1 | 6.67% |
| Total | 174 | 100.00% | 15 | 100.00% |
/*
* fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
*/
static inline void fsnotify_inode_delete(struct inode *inode)
{
__fsnotify_inode_delete(inode);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
/*
* fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
*/
static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
{
__fsnotify_vfsmount_delete(mnt);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andreas Gruenbacher | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
/*
* fsnotify_nameremove - a filename was removed from a directory
*/
static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
{
__u32 mask = FS_DELETE;
if (isdir)
mask |= FS_ISDIR;
fsnotify_parent(NULL, dentry, mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| John McCutchan | 25 | 67.57% | 1 | 20.00% |
| Eric Paris | 12 | 32.43% | 4 | 80.00% |
| Total | 37 | 100.00% | 5 | 100.00% |
/*
* fsnotify_inoderemove - an inode is going away
*/
static inline void fsnotify_inoderemove(struct inode *inode)
{
fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
__fsnotify_inode_delete(inode);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 13 | 40.62% | 4 | 66.67% |
| John McCutchan | 11 | 34.38% | 1 | 16.67% |
| Jan Kara | 8 | 25.00% | 1 | 16.67% |
| Total | 32 | 100.00% | 6 | 100.00% |
/*
* fsnotify_create - 'name' was linked in
*/
static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
{
audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 21 | 44.68% | 3 | 37.50% |
| Robert Love | 14 | 29.79% | 1 | 12.50% |
| Amy Griffis | 8 | 17.02% | 2 | 25.00% |
| Jeff Layton | 4 | 8.51% | 2 | 25.00% |
| Total | 47 | 100.00% | 8 | 100.00% |
/*
* fsnotify_link - new hardlink in 'inode' directory
* Note: We have to pass also the linked inode ptr as some filesystems leave
* new_dentry->d_inode NULL and instantiate inode pointer later
*/
static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct dentry *new_dentry)
{
fsnotify_link_count(inode);
audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 32 | 58.18% | 1 | 16.67% |
| Eric Paris | 19 | 34.55% | 3 | 50.00% |
| Jeff Layton | 4 | 7.27% | 2 | 33.33% |
| Total | 55 | 100.00% | 6 | 100.00% |
/*
* fsnotify_mkdir - directory 'name' was created
*/
static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
{
__u32 mask = (FS_CREATE | FS_ISDIR);
struct inode *d_inode = dentry->d_inode;
audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 37 | 58.73% | 4 | 44.44% |
| Robert Love | 14 | 22.22% | 1 | 11.11% |
| Amy Griffis | 8 | 12.70% | 2 | 22.22% |
| Jeff Layton | 4 | 6.35% | 2 | 22.22% |
| Total | 63 | 100.00% | 9 | 100.00% |
/*
* fsnotify_access - file was read
*/
static inline void fsnotify_access(struct file *file)
{
const struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_ACCESS;
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);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 41 | 46.07% | 9 | 64.29% |
| Robert Love | 27 | 30.34% | 1 | 7.14% |
| Linus Torvalds | 12 | 13.48% | 1 | 7.14% |
| Aihua Zhang | 5 | 5.62% | 1 | 7.14% |
| Andreas Gruenbacher | 3 | 3.37% | 1 | 7.14% |
| Al Viro | 1 | 1.12% | 1 | 7.14% |
| Total | 89 | 100.00% | 14 | 100.00% |
/*
* fsnotify_modify - file was modified
*/
static inline void fsnotify_modify(struct file *file)
{
const struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_MODIFY;
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);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 41 | 46.07% | 9 | 64.29% |
| Robert Love | 27 | 30.34% | 1 | 7.14% |
| Linus Torvalds | 12 | 13.48% | 1 | 7.14% |
| Aihua Zhang | 5 | 5.62% | 1 | 7.14% |
| Andreas Gruenbacher | 3 | 3.37% | 1 | 7.14% |
| Al Viro | 1 | 1.12% | 1 | 7.14% |
| Total | 89 | 100.00% | 14 | 100.00% |
/*
* fsnotify_open - file was opened
*/
static inline void fsnotify_open(struct file *file)
{
const struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
__u32 mask = FS_OPEN;
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 28 | 36.84% | 8 | 61.54% |
| Robert Love | 27 | 35.53% | 1 | 7.69% |
| Linus Torvalds | 12 | 15.79% | 1 | 7.69% |
| Aihua Zhang | 5 | 6.58% | 1 | 7.69% |
| Andreas Gruenbacher | 3 | 3.95% | 1 | 7.69% |
| Al Viro | 1 | 1.32% | 1 | 7.69% |
| Total | 76 | 100.00% | 13 | 100.00% |
/*
* fsnotify_close - file was closed
*/
static inline void fsnotify_close(struct file *file)
{
const struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
fmode_t mode = file->f_mode;
__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
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);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 44 | 42.31% | 1 | 8.33% |
| Eric Paris | 40 | 38.46% | 7 | 58.33% |
| Linus Torvalds | 13 | 12.50% | 1 | 8.33% |
| Aihua Zhang | 5 | 4.81% | 1 | 8.33% |
| Al Viro | 2 | 1.92% | 2 | 16.67% |
| Total | 104 | 100.00% | 12 | 100.00% |
/*
* fsnotify_xattr - extended attributes were changed
*/
static inline void fsnotify_xattr(struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
__u32 mask = FS_ATTRIB;
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
fsnotify_parent(NULL, dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 36 | 57.14% | 1 | 14.29% |
| Eric Paris | 27 | 42.86% | 6 | 85.71% |
| Total | 63 | 100.00% | 7 | 100.00% |
/*
* fsnotify_change - notify_change event. file was modified and/or metadata
* was changed.
*/
static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
{
struct inode *inode = dentry->d_inode;
__u32 mask = 0;
if (ia_valid & ATTR_UID)
mask |= FS_ATTRIB;
if (ia_valid & ATTR_GID)
mask |= FS_ATTRIB;
if (ia_valid & ATTR_SIZE)
mask |= FS_MODIFY;
/* both times implies a utime(s) call */
if ((ia_valid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME))
mask |= FS_ATTRIB;
else if (ia_valid & ATTR_ATIME)
mask |= FS_ACCESS;
else if (ia_valid & ATTR_MTIME)
mask |= FS_MODIFY;
if (ia_valid & ATTR_MODE)
mask |= FS_ATTRIB;
if (mask) {
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
fsnotify_parent(NULL, dentry, mask);
fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 120 | 75.95% | 1 | 12.50% |
| Eric Paris | 38 | 24.05% | 7 | 87.50% |
| Total | 158 | 100.00% | 8 | 100.00% |
#if defined(CONFIG_FSNOTIFY) /* notify helpers */
/*
* fsnotify_oldname_init - save off the old filename before we change it
*/
static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
{
return kstrdup(name, GFP_KERNEL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 22 | 91.67% | 1 | 50.00% |
| Eric Paris | 2 | 8.33% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
/*
* fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
*/
static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
kfree(old_name);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 17 | 94.44% | 1 | 50.00% |
| Eric Paris | 1 | 5.56% | 1 | 50.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
#else /* CONFIG_FSNOTIFY */
static inline const char *fsnotify_oldname_init(const unsigned char *name)
{
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 17 | 94.44% | 1 | 50.00% |
| Eric Paris | 1 | 5.56% | 1 | 50.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Love | 11 | 91.67% | 1 | 50.00% |
| Eric Paris | 1 | 8.33% | 1 | 50.00% |
| Total | 12 | 100.00% | 2 | 100.00% |
#endif /* CONFIG_FSNOTIFY */
#endif /* _LINUX_FS_NOTIFY_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Paris | 620 | 45.99% | 16 | 43.24% |
| Robert Love | 439 | 32.57% | 1 | 2.70% |
| Linus Torvalds | 64 | 4.75% | 1 | 2.70% |
| John McCutchan | 54 | 4.01% | 3 | 8.11% |
| Jan Kara | 43 | 3.19% | 2 | 5.41% |
| Andreas Gruenbacher | 29 | 2.15% | 2 | 5.41% |
| Al Viro | 29 | 2.15% | 5 | 13.51% |
| Aihua Zhang | 26 | 1.93% | 1 | 2.70% |
| Amy Griffis | 22 | 1.63% | 2 | 5.41% |
| Jeff Layton | 16 | 1.19% | 2 | 5.41% |
| Tejun Heo | 3 | 0.22% | 1 | 2.70% |
| Paul Gortmaker | 3 | 0.22% | 1 | 2.70% |
| Total | 1348 | 100.00% | 37 | 100.00% |
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