size_t len);
extern int sock_recvmsg(struct socket *sock, struct msghdr *msg,
size_t size, int flags);
- extern int sock_map_fd(struct socket *sock, int flags);
-extern struct file *sock_alloc_file(struct socket *sock, int flags);
++extern struct file *sock_alloc_file(struct socket *sock, int flags,
++ const char *dname);
extern struct socket *sockfd_lookup(int fd, int *err);
extern struct socket *sock_from_file(struct file *file, int *err);
#define sockfd_put(sock) fput(sock->file)
* but we take care of internal coherence yet.
*/
- static int sock_alloc_file(struct socket *sock, struct file **f, int flags,
- const char *dname)
-struct file *sock_alloc_file(struct socket *sock, int flags)
++struct file *sock_alloc_file(struct socket *sock, int flags,
++ const char *dname)
{
struct qstr name = { .name = "" };
struct path path;
struct file *file;
- int fd;
-
- fd = get_unused_fd_flags(flags);
- if (unlikely(fd < 0))
- return fd;
+ 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)) {
- put_unused_fd(fd);
- return -ENOMEM;
- }
+ if (unlikely(!path.dentry))
+ return ERR_PTR(-ENOMEM);
path.mnt = mntget(sock_mnt);
d_instantiate(path.dentry, SOCK_INODE(sock));
file->f_flags = O_RDWR | (flags & O_NONBLOCK);
file->f_pos = 0;
file->private_data = sock;
-
- *f = file;
- return fd;
+ return file;
}
+ EXPORT_SYMBOL(sock_alloc_file);
- int sock_map_fd(struct socket *sock, int flags)
+ static int sock_map_fd(struct socket *sock, int flags)
{
struct file *newfile;
- int fd = sock_alloc_file(sock, &newfile, flags, NULL);
+ int fd = get_unused_fd_flags(flags);
+ if (unlikely(fd < 0))
+ return fd;
- if (likely(fd >= 0))
- newfile = sock_alloc_file(sock, flags);
++ newfile = sock_alloc_file(sock, flags, NULL);
+ if (likely(!IS_ERR(newfile))) {
fd_install(fd, newfile);
+ return fd;
+ }
- return fd;
+ put_unused_fd(fd);
+ return PTR_ERR(newfile);
}
- EXPORT_SYMBOL(sock_map_fd);
struct socket *sock_from_file(struct file *file, int *err)
{
err = fd1;
goto out_release_both;
}
-
- fd2 = sock_alloc_file(sock2, &newfile2, flags, NULL);
+ fd2 = get_unused_fd_flags(flags);
if (unlikely(fd2 < 0)) {
err = fd2;
- newfile1 = sock_alloc_file(sock1, flags);
+ put_unused_fd(fd1);
+ goto out_release_both;
+ }
+
- newfile2 = sock_alloc_file(sock2, flags);
++ newfile1 = sock_alloc_file(sock1, flags, NULL);
+ if (unlikely(IS_ERR(newfile1))) {
+ err = PTR_ERR(newfile1);
+ put_unused_fd(fd1);
+ put_unused_fd(fd2);
+ goto out_release_both;
+ }
+
++ newfile2 = sock_alloc_file(sock2, flags, NULL);
+ if (IS_ERR(newfile2)) {
+ err = PTR_ERR(newfile2);
fput(newfile1);
put_unused_fd(fd1);
+ put_unused_fd(fd2);
sock_release(sock2);
goto out;
}
sock_release(newsock);
goto out_put;
}
- newfile = sock_alloc_file(newsock, flags);
++ newfile = sock_alloc_file(newsock, flags,
++ sock->sk->sk_prot_creator->name);
+ if (unlikely(IS_ERR(newfile))) {
+ err = PTR_ERR(newfile);
+ put_unused_fd(newfd);
+ sock_release(newsock);
+ goto out_put;
+ }
err = security_socket_accept(sock, newsock);
if (err)