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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-14 05:58:36 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-14 05:58:36 +0300
commita66b4cd1e7163adb327838a3c81faaf6a9330d5a (patch)
tree2b123a010bb0f1566ff6f34e529f01ddf10ee308 /net/socket.c
parentb16528466786a540cb00148acb124e0149d62710 (diff)
parent5f336e722cc961be94d264d96b90c92888fffae1 (diff)
downloadlinux-a66b4cd1e7163adb327838a3c81faaf6a9330d5a.tar.xz
Merge branch 'work.open3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs open-related updates from Al Viro: - "do we need fput() or put_filp()" rules are gone - it's always fput() now. We keep track of that state where it belongs - in ->f_mode. - int *opened mess killed - in finish_open(), in ->atomic_open() instances and in fs/namei.c code around do_last()/lookup_open()/atomic_open(). - alloc_file() wrappers with saner calling conventions are introduced (alloc_file_clone() and alloc_file_pseudo()); callers converted, with much simplification. - while we are at it, saner calling conventions for path_init() and link_path_walk(), simplifying things inside fs/namei.c (both on open-related paths and elsewhere). * 'work.open3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits) few more cleanups of link_path_walk() callers allow link_path_walk() to take ERR_PTR() make path_init() unconditionally paired with terminate_walk() document alloc_file() changes make alloc_file() static do_shmat(): grab shp->shm_file earlier, switch to alloc_file_clone() new helper: alloc_file_clone() create_pipe_files(): switch the first allocation to alloc_file_pseudo() anon_inode_getfile(): switch to alloc_file_pseudo() hugetlb_file_setup(): switch to alloc_file_pseudo() ocxlflash_getfile(): switch to alloc_file_pseudo() cxl_getfile(): switch to alloc_file_pseudo() ... and switch shmem_file_setup() to alloc_file_pseudo() __shmem_file_setup(): reorder allocations new wrapper: alloc_file_pseudo() kill FILE_{CREATED,OPENED} switch atomic_open() and lookup_open() to returning 0 in all success cases document ->atomic_open() changes ->atomic_open(): return 0 in all success cases get rid of 'opened' in path_openat() and the helpers downstream ...
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c29
1 files changed, 5 insertions, 24 deletions
diff --git a/net/socket.c b/net/socket.c
index 8c24d5dc4bc8..792f0313ea91 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -388,39 +388,20 @@ static struct file_system_type sock_fs_type = {
struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname)
{
- struct qstr name = { .name = "" };
- struct path path;
struct file *file;
- if (dname) {
- name.name = dname;
- name.len = strlen(name.name);
- } else if (sock->sk) {
- name.name = sock->sk->sk_prot_creator->name;
- name.len = strlen(name.name);
- }
- path.dentry = d_alloc_pseudo(sock_mnt->mnt_sb, &name);
- if (unlikely(!path.dentry)) {
- sock_release(sock);
- return ERR_PTR(-ENOMEM);
- }
- path.mnt = mntget(sock_mnt);
-
- d_instantiate(path.dentry, SOCK_INODE(sock));
+ if (!dname)
+ dname = sock->sk ? sock->sk->sk_prot_creator->name : "";
- file = alloc_file(&path, FMODE_READ | FMODE_WRITE,
- &socket_file_ops);
+ file = alloc_file_pseudo(SOCK_INODE(sock), sock_mnt, dname,
+ O_RDWR | (flags & O_NONBLOCK),
+ &socket_file_ops);
if (IS_ERR(file)) {
- /* drop dentry, keep inode for a bit */
- ihold(d_inode(path.dentry));
- path_put(&path);
- /* ... and now kill it properly */
sock_release(sock);
return file;
}
sock->file = file;
- file->f_flags = O_RDWR | (flags & O_NONBLOCK);
file->private_data = sock;
return file;
}