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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull vfs update from Al Viro:

 - big one - consolidation of descriptor-related logics; almost all of
   that is moved to fs/file.c

   (BTW, I'm seriously tempted to rename the result to fd.c.  As it is,
   we have a situation when file_table.c is about handling of struct
   file and file.c is about handling of descriptor tables; the reasons
   are historical - file_table.c used to be about a static array of
   struct file we used to have way back).

   A lot of stray ends got cleaned up and converted to saner primitives,
   disgusting mess in android/binder.c is still disgusting, but at least
   doesn't poke so much in descriptor table guts anymore.  A bunch of
   relatively minor races got fixed in process, plus an ext4 struct file
   leak.

 - related thing - fget_light() partially unuglified; see fdget() in
   there (and yes, it generates the code as good as we used to have).

 - also related - bits of Cyrill's procfs stuff that got entangled into
   that work; _not_ all of it, just the initial move to fs/proc/fd.c and
   switch of fdinfo to seq_file.

 - Alex's fs/coredump.c spiltoff - the same story, had been easier to
   take that commit than mess with conflicts.  The rest is a separate
   pile, this was just a mechanical code movement.

 - a few misc patches all over the place.  Not all for this cycle,
   there'll be more (and quite a few currently sit in akpm's tree)."

Fix up trivial conflicts in the android binder driver, and some fairly
simple conflicts due to two different changes to the sock_alloc_file()
interface ("take descriptor handling from sock_alloc_file() to callers"
vs "net: Providing protocol type via system.sockprotoname xattr of
/proc/PID/fd entries" adding a dentry name to the socket)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (72 commits)
  MAX_LFS_FILESIZE should be a loff_t
  compat: fs: Generic compat_sys_sendfile implementation
  fs: push rcu_barrier() from deactivate_locked_super() to filesystems
  btrfs: reada_extent doesn't need kref for refcount
  coredump: move core dump functionality into its own file
  coredump: prevent double-free on an error path in core dumper
  usb/gadget: fix misannotations
  fcntl: fix misannotations
  ceph: don't abuse d_delete() on failure exits
  hypfs: ->d_parent is never NULL or negative
  vfs: delete surplus inode NULL check
  switch simple cases of fget_light to fdget
  new helpers: fdget()/fdput()
  switch o2hb_region_dev_write() to fget_light()
  proc_map_files_readdir(): don't bother with grabbing files
  make get_file() return its argument
  vhost_set_vring(): turn pollstart/pollstop into bool
  switch prctl_set_mm_exe_file() to fget_light()
  switch xfs_find_handle() to fget_light()
  switch xfs_swapext() to fget_light()
  ...
This commit is contained in:
Linus Torvalds
2012-10-02 20:25:04 -07:00
parent ca41cc96b2 2bd2c1941f
commit aab174f0df
142 changed files with 2914 additions and 2876 deletions
Download Patch File Download Diff File Expand all files Collapse all files
ipc/mqueue.c
+39 -39
View File
@@ -944,7 +944,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
size_t, msg_len, unsigned int, msg_prio,
const struct timespec __user *, u_abs_timeout)
{
struct file *filp;
struct fd f;
struct inode *inode;
struct ext_wait_queue wait;
struct ext_wait_queue *receiver;
@@ -967,21 +967,21 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
audit_mq_sendrecv(mqdes, msg_len, msg_prio, timeout ? &ts : NULL);
filp = fget(mqdes);
if (unlikely(!filp)) {
f = fdget(mqdes);
if (unlikely(!f.file)) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations)) {
inode = f.file->f_path.dentry->d_inode;
if (unlikely(f.file->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
audit_inode(NULL, filp->f_path.dentry);
audit_inode(NULL, f.file->f_path.dentry);
if (unlikely(!(filp->f_mode & FMODE_WRITE))) {
if (unlikely(!(f.file->f_mode & FMODE_WRITE))) {
ret = -EBADF;
goto out_fput;
}
@@ -1023,7 +1023,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
}
if (info->attr.mq_curmsgs == info->attr.mq_maxmsg) {
if (filp->f_flags & O_NONBLOCK) {
if (f.file->f_flags & O_NONBLOCK) {
ret = -EAGAIN;
} else {
wait.task = current;
@@ -1056,7 +1056,7 @@ out_free:
if (ret)
free_msg(msg_ptr);
out_fput:
fput(filp);
fdput(f);
out:
return ret;
}
@@ -1067,7 +1067,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
{
ssize_t ret;
struct msg_msg *msg_ptr;
struct file *filp;
struct fd f;
struct inode *inode;
struct mqueue_inode_info *info;
struct ext_wait_queue wait;
@@ -1084,21 +1084,21 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
audit_mq_sendrecv(mqdes, msg_len, 0, timeout ? &ts : NULL);
filp = fget(mqdes);
if (unlikely(!filp)) {
f = fdget(mqdes);
if (unlikely(!f.file)) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations)) {
inode = f.file->f_path.dentry->d_inode;
if (unlikely(f.file->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
audit_inode(NULL, filp->f_path.dentry);
audit_inode(NULL, f.file->f_path.dentry);
if (unlikely(!(filp->f_mode & FMODE_READ))) {
if (unlikely(!(f.file->f_mode & FMODE_READ))) {
ret = -EBADF;
goto out_fput;
}
@@ -1130,7 +1130,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
}
if (info->attr.mq_curmsgs == 0) {
if (filp->f_flags & O_NONBLOCK) {
if (f.file->f_flags & O_NONBLOCK) {
spin_unlock(&info->lock);
ret = -EAGAIN;
} else {
@@ -1160,7 +1160,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
free_msg(msg_ptr);
}
out_fput:
fput(filp);
fdput(f);
out:
return ret;
}
@@ -1174,7 +1174,7 @@ SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
const struct sigevent __user *, u_notification)
{
int ret;
struct file *filp;
struct fd f;
struct sock *sock;
struct inode *inode;
struct sigevent notification;
@@ -1220,13 +1220,13 @@ SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
skb_put(nc, NOTIFY_COOKIE_LEN);
/* and attach it to the socket */
retry:
filp = fget(notification.sigev_signo);
if (!filp) {
f = fdget(notification.sigev_signo);
if (!f.file) {
ret = -EBADF;
goto out;
}
sock = netlink_getsockbyfilp(filp);
fput(filp);
sock = netlink_getsockbyfilp(f.file);
fdput(f);
if (IS_ERR(sock)) {
ret = PTR_ERR(sock);
sock = NULL;
@@ -1245,14 +1245,14 @@ retry:
}
}
filp = fget(mqdes);
if (!filp) {
f = fdget(mqdes);
if (!f.file) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations)) {
inode = f.file->f_path.dentry->d_inode;
if (unlikely(f.file->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
@@ -1292,7 +1292,7 @@ retry:
}
spin_unlock(&info->lock);
out_fput:
fput(filp);
fdput(f);
out:
if (sock) {
netlink_detachskb(sock, nc);
@@ -1308,7 +1308,7 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
{
int ret;
struct mq_attr mqstat, omqstat;
struct file *filp;
struct fd f;
struct inode *inode;
struct mqueue_inode_info *info;
@@ -1319,14 +1319,14 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
return -EINVAL;
}
filp = fget(mqdes);
if (!filp) {
f = fdget(mqdes);
if (!f.file) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations)) {
inode = f.file->f_path.dentry->d_inode;
if (unlikely(f.file->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
@@ -1335,15 +1335,15 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
spin_lock(&info->lock);
omqstat = info->attr;
omqstat.mq_flags = filp->f_flags & O_NONBLOCK;
omqstat.mq_flags = f.file->f_flags & O_NONBLOCK;
if (u_mqstat) {
audit_mq_getsetattr(mqdes, &mqstat);
spin_lock(&filp->f_lock);
spin_lock(&f.file->f_lock);
if (mqstat.mq_flags & O_NONBLOCK)
filp->f_flags |= O_NONBLOCK;
f.file->f_flags |= O_NONBLOCK;
else
filp->f_flags &= ~O_NONBLOCK;
spin_unlock(&filp->f_lock);
f.file->f_flags &= ~O_NONBLOCK;
spin_unlock(&f.file->f_lock);
inode->i_atime = inode->i_ctime = CURRENT_TIME;
}
@@ -1356,7 +1356,7 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
ret = -EFAULT;
out_fput:
fput(filp);
fdput(f);
out:
return ret;
}