shm: add sealing API

[pandora-kernel.git] / fs / fcntl.c

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 22764c7..e69774e 100644 (file)
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -20,6 +20,7 @@
 #include <linux/signal.h>
 #include <linux/rcupdate.h>
 #include <linux/pid_namespace.h>
+#include <linux/shmem_fs.h>
 
 #include <asm/poll.h>
 #include <asm/siginfo.h>
@@ -32,20 +33,20 @@ void set_close_on_exec(unsigned int fd, int flag)
        spin_lock(&files->file_lock);
        fdt = files_fdtable(files);
        if (flag)
-               FD_SET(fd, fdt->close_on_exec);
+               __set_close_on_exec(fd, fdt);
        else
-               FD_CLR(fd, fdt->close_on_exec);
+               __clear_close_on_exec(fd, fdt);
        spin_unlock(&files->file_lock);
 }
 
-static int get_close_on_exec(unsigned int fd)
+static bool get_close_on_exec(unsigned int fd)
 {
        struct files_struct *files = current->files;
        struct fdtable *fdt;
-       int res;
+       bool res;
        rcu_read_lock();
        fdt = files_fdtable(files);
-       res = FD_ISSET(fd, fdt->close_on_exec);
+       res = close_on_exec(fd, fdt);
        rcu_read_unlock();
        return res;
 }
@@ -90,15 +91,15 @@ SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags)
        err = -EBUSY;
        fdt = files_fdtable(files);
        tofree = fdt->fd[newfd];
-       if (!tofree && FD_ISSET(newfd, fdt->open_fds))
+       if (!tofree && fd_is_open(newfd, fdt))
                goto out_unlock;
        get_file(file);
        rcu_assign_pointer(fdt->fd[newfd], file);
-       FD_SET(newfd, fdt->open_fds);
+       __set_open_fd(newfd, fdt);
        if (flags & O_CLOEXEC)
-               FD_SET(newfd, fdt->close_on_exec);
+               __set_close_on_exec(newfd, fdt);
        else
-               FD_CLR(newfd, fdt->close_on_exec);
+               __clear_close_on_exec(newfd, fdt);
        spin_unlock(&files->file_lock);
 
        if (tofree)
@@ -420,6 +421,10 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
        case F_GETPIPE_SZ:
                err = pipe_fcntl(filp, cmd, arg);
                break;
+       case F_ADD_SEALS:
+       case F_GET_SEALS:
+               err = shmem_fcntl(filp, cmd, arg);
+               break;
        default:
                break;
        }