+// SPDX-License-Identifier: GPL-2.0
#include <linux/fanotify.h>
#include <linux/fcntl.h>
#include <linux/file.h>
return ret;
}
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
static struct fanotify_perm_event_info *dequeue_event(
struct fsnotify_group *group, int fd)
{
return 0;
}
-#endif
static ssize_t copy_event_to_user(struct fsnotify_group *group,
struct fsnotify_event *event,
fanotify_event_metadata.event_len))
goto out_close_fd;
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
- if (event->mask & FAN_ALL_PERM_EVENTS)
+ if (fanotify_is_perm_event(event->mask))
FANOTIFY_PE(event)->fd = fd;
-#endif
if (fd != FAN_NOFD)
fd_install(fd, f);
* Permission events get queued to wait for response. Other
* events can be destroyed now.
*/
- if (!(kevent->mask & FAN_ALL_PERM_EVENTS)) {
+ if (!fanotify_is_perm_event(kevent->mask)) {
fsnotify_destroy_event(group, kevent);
} else {
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
if (ret <= 0) {
FANOTIFY_PE(kevent)->response = FAN_DENY;
wake_up(&group->fanotify_data.access_waitq);
&group->fanotify_data.access_list);
spin_unlock(&group->notification_lock);
}
-#endif
}
if (ret < 0)
break;
static ssize_t fanotify_write(struct file *file, const char __user *buf, size_t count, loff_t *pos)
{
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
struct fanotify_response response = { .fd = -1, .response = -1 };
struct fsnotify_group *group;
int ret;
+ if (!IS_ENABLED(CONFIG_FANOTIFY_ACCESS_PERMISSIONS))
+ return -EINVAL;
+
group = file->private_data;
if (count > sizeof(response))
count = ret;
return count;
-#else
- return -EINVAL;
-#endif
}
static int fanotify_release(struct inode *ignored, struct file *file)
{
struct fsnotify_group *group = file->private_data;
-
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
struct fanotify_perm_event_info *event, *next;
struct fsnotify_event *fsn_event;
spin_unlock(&group->notification_lock);
fsnotify_destroy_event(group, fsn_event);
spin_lock(&group->notification_lock);
- } else
+ } else {
FANOTIFY_PE(fsn_event)->response = FAN_ALLOW;
+ }
}
spin_unlock(&group->notification_lock);
/* Response for all permission events it set, wakeup waiters */
wake_up(&group->fanotify_data.access_waitq);
-#endif
/* matches the fanotify_init->fsnotify_alloc_group */
fsnotify_destroy_group(group);
if (force_o_largefile())
event_f_flags |= O_LARGEFILE;
group->fanotify_data.f_flags = event_f_flags;
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
init_waitqueue_head(&group->fanotify_data.access_waitq);
INIT_LIST_HEAD(&group->fanotify_data.access_list);
-#endif
switch (flags & FAN_ALL_CLASS_BITS) {
case FAN_CLASS_NOTIF:
group->priority = FS_PRIO_0;
struct fsnotify_group *group;
struct fd f;
struct path path;
+ u32 valid_mask = FAN_ALL_EVENTS | FAN_EVENT_ON_CHILD;
int ret;
pr_debug("%s: fanotify_fd=%d flags=%x dfd=%d pathname=%p mask=%llx\n",
mask &= ~FAN_ONDIR;
}
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
- if (mask & ~(FAN_ALL_EVENTS | FAN_ALL_PERM_EVENTS | FAN_EVENT_ON_CHILD))
-#else
- if (mask & ~(FAN_ALL_EVENTS | FAN_EVENT_ON_CHILD))
-#endif
+ if (IS_ENABLED(CONFIG_FANOTIFY_ACCESS_PERMISSIONS))
+ valid_mask |= FAN_ALL_PERM_EVENTS;
+
+ if (mask & ~valid_mask)
return -EINVAL;
f = fdget(fanotify_fd);
{
fanotify_mark_cache = KMEM_CACHE(fsnotify_mark, SLAB_PANIC);
fanotify_event_cachep = KMEM_CACHE(fanotify_event_info, SLAB_PANIC);
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
- fanotify_perm_event_cachep = KMEM_CACHE(fanotify_perm_event_info,
- SLAB_PANIC);
-#endif
+ if (IS_ENABLED(CONFIG_FANOTIFY_ACCESS_PERMISSIONS)) {
+ fanotify_perm_event_cachep =
+ KMEM_CACHE(fanotify_perm_event_info, SLAB_PANIC);
+ }
return 0;
}