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-rw-r--r--fs/notify/fanotify/fanotify_user.c87
-rw-r--r--fs/notify/inotify/inotify_user.c28
2 files changed, 47 insertions, 68 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index d4380366973..721d692fa8d 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -58,7 +58,9 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group,
return fsnotify_remove_notify_event(group);
}
-static int create_fd(struct fsnotify_group *group, struct fsnotify_event *event)
+static int create_fd(struct fsnotify_group *group,
+ struct fsnotify_event *event,
+ struct file **file)
{
int client_fd;
struct file *new_file;
@@ -98,7 +100,7 @@ static int create_fd(struct fsnotify_group *group, struct fsnotify_event *event)
put_unused_fd(client_fd);
client_fd = PTR_ERR(new_file);
} else {
- fd_install(client_fd, new_file);
+ *file = new_file;
}
return client_fd;
@@ -106,13 +108,15 @@ static int create_fd(struct fsnotify_group *group, struct fsnotify_event *event)
static int fill_event_metadata(struct fsnotify_group *group,
struct fanotify_event_metadata *metadata,
- struct fsnotify_event *event)
+ struct fsnotify_event *event,
+ struct file **file)
{
int ret = 0;
pr_debug("%s: group=%p metadata=%p event=%p\n", __func__,
group, metadata, event);
+ *file = NULL;
metadata->event_len = FAN_EVENT_METADATA_LEN;
metadata->metadata_len = FAN_EVENT_METADATA_LEN;
metadata->vers = FANOTIFY_METADATA_VERSION;
@@ -121,7 +125,7 @@ static int fill_event_metadata(struct fsnotify_group *group,
if (unlikely(event->mask & FAN_Q_OVERFLOW))
metadata->fd = FAN_NOFD;
else {
- metadata->fd = create_fd(group, event);
+ metadata->fd = create_fd(group, event, file);
if (metadata->fd < 0)
ret = metadata->fd;
}
@@ -220,25 +224,6 @@ static int prepare_for_access_response(struct fsnotify_group *group,
return 0;
}
-static void remove_access_response(struct fsnotify_group *group,
- struct fsnotify_event *event,
- __s32 fd)
-{
- struct fanotify_response_event *re;
-
- if (!(event->mask & FAN_ALL_PERM_EVENTS))
- return;
-
- re = dequeue_re(group, fd);
- if (!re)
- return;
-
- BUG_ON(re->event != event);
-
- kmem_cache_free(fanotify_response_event_cache, re);
-
- return;
-}
#else
static int prepare_for_access_response(struct fsnotify_group *group,
struct fsnotify_event *event,
@@ -247,12 +232,6 @@ static int prepare_for_access_response(struct fsnotify_group *group,
return 0;
}
-static void remove_access_response(struct fsnotify_group *group,
- struct fsnotify_event *event,
- __s32 fd)
-{
- return;
-}
#endif
static ssize_t copy_event_to_user(struct fsnotify_group *group,
@@ -260,31 +239,33 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
char __user *buf)
{
struct fanotify_event_metadata fanotify_event_metadata;
+ struct file *f;
int fd, ret;
pr_debug("%s: group=%p event=%p\n", __func__, group, event);
- ret = fill_event_metadata(group, &fanotify_event_metadata, event);
+ ret = fill_event_metadata(group, &fanotify_event_metadata, event, &f);
if (ret < 0)
goto out;
fd = fanotify_event_metadata.fd;
- ret = prepare_for_access_response(group, event, fd);
- if (ret)
- goto out_close_fd;
-
ret = -EFAULT;
if (copy_to_user(buf, &fanotify_event_metadata,
fanotify_event_metadata.event_len))
- goto out_kill_access_response;
+ goto out_close_fd;
+ ret = prepare_for_access_response(group, event, fd);
+ if (ret)
+ goto out_close_fd;
+
+ fd_install(fd, f);
return fanotify_event_metadata.event_len;
-out_kill_access_response:
- remove_access_response(group, event, fd);
out_close_fd:
- if (fd != FAN_NOFD)
- sys_close(fd);
+ if (fd != FAN_NOFD) {
+ put_unused_fd(fd);
+ fput(f);
+ }
out:
#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
if (event->mask & FAN_ALL_PERM_EVENTS) {
@@ -470,24 +451,22 @@ static int fanotify_find_path(int dfd, const char __user *filename,
dfd, filename, flags);
if (filename == NULL) {
- struct file *file;
- int fput_needed;
+ struct fd f = fdget(dfd);
ret = -EBADF;
- file = fget_light(dfd, &fput_needed);
- if (!file)
+ if (!f.file)
goto out;
ret = -ENOTDIR;
if ((flags & FAN_MARK_ONLYDIR) &&
- !(S_ISDIR(file->f_path.dentry->d_inode->i_mode))) {
- fput_light(file, fput_needed);
+ !(S_ISDIR(f.file->f_path.dentry->d_inode->i_mode))) {
+ fdput(f);
goto out;
}
- *path = file->f_path;
+ *path = f.file->f_path;
path_get(path);
- fput_light(file, fput_needed);
+ fdput(f);
} else {
unsigned int lookup_flags = 0;
@@ -767,9 +746,9 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
struct inode *inode = NULL;
struct vfsmount *mnt = NULL;
struct fsnotify_group *group;
- struct file *filp;
+ struct fd f;
struct path path;
- int ret, fput_needed;
+ int ret;
pr_debug("%s: fanotify_fd=%d flags=%x dfd=%d pathname=%p mask=%llx\n",
__func__, fanotify_fd, flags, dfd, pathname, mask);
@@ -803,15 +782,15 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
#endif
return -EINVAL;
- filp = fget_light(fanotify_fd, &fput_needed);
- if (unlikely(!filp))
+ f = fdget(fanotify_fd);
+ if (unlikely(!f.file))
return -EBADF;
/* verify that this is indeed an fanotify instance */
ret = -EINVAL;
- if (unlikely(filp->f_op != &fanotify_fops))
+ if (unlikely(f.file->f_op != &fanotify_fops))
goto fput_and_out;
- group = filp->private_data;
+ group = f.file->private_data;
/*
* group->priority == FS_PRIO_0 == FAN_CLASS_NOTIF. These are not
@@ -858,7 +837,7 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
path_put(&path);
fput_and_out:
- fput_light(filp, fput_needed);
+ fdput(f);
return ret;
}
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 8445fbc8985..c311dda054a 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -757,16 +757,16 @@ SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname,
struct fsnotify_group *group;
struct inode *inode;
struct path path;
- struct file *filp;
- int ret, fput_needed;
+ struct fd f;
+ int ret;
unsigned flags = 0;
- filp = fget_light(fd, &fput_needed);
- if (unlikely(!filp))
+ f = fdget(fd);
+ if (unlikely(!f.file))
return -EBADF;
/* verify that this is indeed an inotify instance */
- if (unlikely(filp->f_op != &inotify_fops)) {
+ if (unlikely(f.file->f_op != &inotify_fops)) {
ret = -EINVAL;
goto fput_and_out;
}
@@ -782,13 +782,13 @@ SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname,
/* inode held in place by reference to path; group by fget on fd */
inode = path.dentry->d_inode;
- group = filp->private_data;
+ group = f.file->private_data;
/* create/update an inode mark */
ret = inotify_update_watch(group, inode, mask);
path_put(&path);
fput_and_out:
- fput_light(filp, fput_needed);
+ fdput(f);
return ret;
}
@@ -796,19 +796,19 @@ SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
{
struct fsnotify_group *group;
struct inotify_inode_mark *i_mark;
- struct file *filp;
- int ret = 0, fput_needed;
+ struct fd f;
+ int ret = 0;
- filp = fget_light(fd, &fput_needed);
- if (unlikely(!filp))
+ f = fdget(fd);
+ if (unlikely(!f.file))
return -EBADF;
/* verify that this is indeed an inotify instance */
ret = -EINVAL;
- if (unlikely(filp->f_op != &inotify_fops))
+ if (unlikely(f.file->f_op != &inotify_fops))
goto out;
- group = filp->private_data;
+ group = f.file->private_data;
ret = -EINVAL;
i_mark = inotify_idr_find(group, wd);
@@ -823,7 +823,7 @@ SYSCALL_DEFINE2(inotify_rm_watch, int, fd, __s32, wd)
fsnotify_put_mark(&i_mark->fsn_mark);
out:
- fput_light(filp, fput_needed);
+ fdput(f);
return ret;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-25 10:18:39 +0000