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authorAl Viro <viro@zeniv.linux.org.uk>2012-08-18 00:25:51 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-09-26 21:08:50 -0400
commit56b31d1c9f1e6a3ad92e7bfe252721e05d92b285 (patch)
tree44521dbcdf51695b6092f2a4dabe83f460c2ed7c /net/socket.c
parent28407630513b1a86133db0ef8b39fabad6c494af (diff)
downloadlinux-56b31d1c9f1e6a3ad92e7bfe252721e05d92b285.tar.gz
unexport sock_map_fd(), switch to sock_alloc_file()
Both modular callers of sock_map_fd() had been buggy; sctp one leaks descriptor and file if copy_to_user() fails, 9p one shouldn't be exposing file in the descriptor table at all. Switch both to sock_alloc_file(), export it, unexport sock_map_fd() and make it static. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/socket.c b/net/socket.c
index a14ec19164b..38a14311f3a 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -346,7 +346,7 @@ static struct file_system_type sock_fs_type = {
* but we take care of internal coherence yet.
*/
-static struct file *sock_alloc_file(struct socket *sock, int flags)
+struct file *sock_alloc_file(struct socket *sock, int flags)
{
struct qstr name = { .name = "" };
struct path path;
@@ -375,8 +375,9 @@ static struct file *sock_alloc_file(struct socket *sock, int flags)
file->private_data = sock;
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 = get_unused_fd_flags(flags);
@@ -392,7 +393,6 @@ int sock_map_fd(struct socket *sock, int flags)
put_unused_fd(fd);
return PTR_ERR(newfile);
}
-EXPORT_SYMBOL(sock_map_fd);
struct socket *sock_from_file(struct file *file, int *err)
{