flag parameters: anon_inode_getfd extension

This patch just extends the anon_inode_getfd interface to take an additional
parameter with a flag value.  The flag value is passed on to
get_unused_fd_flags in anticipation for a use with the O_CLOEXEC flag.

No actual semantic changes here, the changed callers all pass 0 for now.

[akpm@linux-foundation.org: KVM fix]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Acked-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 977ef20..1a4eee6 100644 (file)
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -58,8 +58,9 @@ static struct dentry_operations anon_inodefs_dentry_operations = {
  *                    of the file
  *
  * @name:    [in]    name of the "class" of the new file
- * @fops     [in]    file operations for the new file
- * @priv     [in]    private data for the new file (will be file's private_data)
+ * @fops:    [in]    file operations for the new file
+ * @priv:    [in]    private data for the new file (will be file's private_data)
+ * @flags:   [in]    flags
  *
  * Creates a new file by hooking it on a single inode. This is useful for files
  * that do not need to have a full-fledged inode in order to operate correctly.
@@ -68,7 +69,7 @@ static struct dentry_operations anon_inodefs_dentry_operations = {
  * setup.  Returns new descriptor or -error.
  */
 int anon_inode_getfd(const char *name, const struct file_operations *fops,
-                    void *priv)
+                    void *priv, int flags)
 {
        struct qstr this;
        struct dentry *dentry;
@@ -78,7 +79,7 @@ int anon_inode_getfd(const char *name, const struct file_operations *fops,
        if (IS_ERR(anon_inode_inode))
                return -ENODEV;
 
-       error = get_unused_fd();
+       error = get_unused_fd_flags(flags);
        if (error < 0)
                return error;
        fd = error;

diff --git a/fs/eventfd.c b/fs/eventfd.c
index 343942d..6094265 100644 (file)
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -214,7 +214,7 @@ asmlinkage long sys_eventfd(unsigned int count)
         * When we call this, the initialization must be complete, since
         * anon_inode_getfd() will install the fd.
         */
-       fd = anon_inode_getfd("[eventfd]", &eventfd_fops, ctx);
+       fd = anon_inode_getfd("[eventfd]", &eventfd_fops, ctx, 0);
        if (fd < 0)
                kfree(ctx);
        return fd;

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 990c01d..9392dd9 100644 (file)
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1068,7 +1068,7 @@ asmlinkage long sys_epoll_create(int size)
         * Creates all the items needed to setup an eventpoll file. That is,
         * a file structure and a free file descriptor.
         */
-       fd = anon_inode_getfd("[eventpoll]", &eventpoll_fops, ep);
+       fd = anon_inode_getfd("[eventpoll]", &eventpoll_fops, ep, 0);
        if (fd < 0)
                ep_free(ep);
 

diff --git a/fs/signalfd.c b/fs/signalfd.c
index 6197256..ddb328b 100644 (file)
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -227,7 +227,8 @@ asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemas
                 * When we call this, the initialization must be complete, since
                 * anon_inode_getfd() will install the fd.
                 */
-               ufd = anon_inode_getfd("[signalfd]", &signalfd_fops, ctx);
+               ufd = anon_inode_getfd("[signalfd]", &signalfd_fops, ctx,
+                                      0);
                if (ufd < 0)
                        kfree(ctx);
        } else {

diff --git a/fs/timerfd.c b/fs/timerfd.c
index d87d354..77c2bc9 100644 (file)
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -198,7 +198,7 @@ asmlinkage long sys_timerfd_create(int clockid, int flags)
        ctx->clockid = clockid;
        hrtimer_init(&ctx->tmr, clockid, HRTIMER_MODE_ABS);
 
-       ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx);
+       ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx, 0);
        if (ufd < 0)
                kfree(ctx);
 

diff --git a/include/linux/anon_inodes.h b/include/linux/anon_inodes.h
index 6129e58..e0a0cdc 100644 (file)
--- a/include/linux/anon_inodes.h
+++ b/include/linux/anon_inodes.h
@@ -9,7 +9,7 @@
 #define _LINUX_ANON_INODES_H
 
 int anon_inode_getfd(const char *name, const struct file_operations *fops,
-                    void *priv);
+                    void *priv, int flags);
 
 #endif /* _LINUX_ANON_INODES_H */
 

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 904d7b7..a845890 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -902,7 +902,7 @@ static const struct file_operations kvm_vcpu_fops = {
  */
 static int create_vcpu_fd(struct kvm_vcpu *vcpu)
 {
-       int fd = anon_inode_getfd("kvm-vcpu", &kvm_vcpu_fops, vcpu);
+       int fd = anon_inode_getfd("kvm-vcpu", &kvm_vcpu_fops, vcpu, 0);
        if (fd < 0)
                kvm_put_kvm(vcpu->kvm);
        return fd;
@@ -1261,7 +1261,7 @@ static int kvm_dev_ioctl_create_vm(void)
        kvm = kvm_create_vm();
        if (IS_ERR(kvm))
                return PTR_ERR(kvm);
-       fd = anon_inode_getfd("kvm-vm", &kvm_vm_fops, kvm);
+       fd = anon_inode_getfd("kvm-vm", &kvm_vm_fops, kvm, 0);
        if (fd < 0)
                kvm_put_kvm(kvm);