Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 295 deletions

diff --git a/ANDROID_3.4.5/fs/signalfd.c b/ANDROID_3.4.5/fs/signalfd.c
deleted file mode 100644
index 7ae2a574..00000000
--- a/ANDROID_3.4.5/fs/signalfd.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- *  fs/signalfd.c
- *
- *  Copyright (C) 2003  Linus Torvalds
- *
- *  Mon Mar 5, 2007: Davide Libenzi <davidel@xmailserver.org>
- *      Changed ->read() to return a siginfo strcture instead of signal number.
- *      Fixed locking in ->poll().
- *      Added sighand-detach notification.
- *      Added fd re-use in sys_signalfd() syscall.
- *      Now using anonymous inode source.
- *      Thanks to Oleg Nesterov for useful code review and suggestions.
- *      More comments and suggestions from Arnd Bergmann.
- *  Sat May 19, 2007: Davi E. M. Arnaut <davi@haxent.com.br>
- *      Retrieve multiple signals with one read() call
- *  Sun Jul 15, 2007: Davide Libenzi <davidel@xmailserver.org>
- *      Attach to the sighand only during read() and poll().
- */
-
-#include <linux/file.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/list.h>
-#include <linux/anon_inodes.h>
-#include <linux/signalfd.h>
-#include <linux/syscalls.h>
-
-void signalfd_cleanup(struct sighand_struct *sighand)
-{
-	wait_queue_head_t *wqh = &sighand->signalfd_wqh;
-	/*
-	 * The lockless check can race with remove_wait_queue() in progress,
-	 * but in this case its caller should run under rcu_read_lock() and
-	 * sighand_cachep is SLAB_DESTROY_BY_RCU, we can safely return.
-	 */
-	if (likely(!waitqueue_active(wqh)))
-		return;
-
-	/* wait_queue_t->func(POLLFREE) should do remove_wait_queue() */
-	wake_up_poll(wqh, POLLHUP | POLLFREE);
-}
-
-struct signalfd_ctx {
-	sigset_t sigmask;
-};
-
-static int signalfd_release(struct inode *inode, struct file *file)
-{
-	kfree(file->private_data);
-	return 0;
-}
-
-static unsigned int signalfd_poll(struct file *file, poll_table *wait)
-{
-	struct signalfd_ctx *ctx = file->private_data;
-	unsigned int events = 0;
-
-	poll_wait(file, &current->sighand->signalfd_wqh, wait);
-
-	spin_lock_irq(&current->sighand->siglock);
-	if (next_signal(&current->pending, &ctx->sigmask) ||
-	    next_signal(&current->signal->shared_pending,
-			&ctx->sigmask))
-		events |= POLLIN;
-	spin_unlock_irq(&current->sighand->siglock);
-
-	return events;
-}
-
-/*
- * Copied from copy_siginfo_to_user() in kernel/signal.c
- */
-static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo,
-			     siginfo_t const *kinfo)
-{
-	long err;
-
-	BUILD_BUG_ON(sizeof(struct signalfd_siginfo) != 128);
-
-	/*
-	 * Unused members should be zero ...
-	 */
-	err = __clear_user(uinfo, sizeof(*uinfo));
-
-	/*
-	 * If you change siginfo_t structure, please be sure
-	 * this code is fixed accordingly.
-	 */
-	err |= __put_user(kinfo->si_signo, &uinfo->ssi_signo);
-	err |= __put_user(kinfo->si_errno, &uinfo->ssi_errno);
-	err |= __put_user((short) kinfo->si_code, &uinfo->ssi_code);
-	switch (kinfo->si_code & __SI_MASK) {
-	case __SI_KILL:
-		err |= __put_user(kinfo->si_pid, &uinfo->ssi_pid);
-		err |= __put_user(kinfo->si_uid, &uinfo->ssi_uid);
-		break;
-	case __SI_TIMER:
-		 err |= __put_user(kinfo->si_tid, &uinfo->ssi_tid);
-		 err |= __put_user(kinfo->si_overrun, &uinfo->ssi_overrun);
-		 err |= __put_user((long) kinfo->si_ptr, &uinfo->ssi_ptr);
-		 err |= __put_user(kinfo->si_int, &uinfo->ssi_int);
-		break;
-	case __SI_POLL:
-		err |= __put_user(kinfo->si_band, &uinfo->ssi_band);
-		err |= __put_user(kinfo->si_fd, &uinfo->ssi_fd);
-		break;
-	case __SI_FAULT:
-		err |= __put_user((long) kinfo->si_addr, &uinfo->ssi_addr);
-#ifdef __ARCH_SI_TRAPNO
-		err |= __put_user(kinfo->si_trapno, &uinfo->ssi_trapno);
-#endif
-#ifdef BUS_MCEERR_AO
-		/* 
-		 * Other callers might not initialize the si_lsb field,
-		 * so check explicitly for the right codes here.
-		 */
-		if (kinfo->si_code == BUS_MCEERR_AR ||
-		    kinfo->si_code == BUS_MCEERR_AO)
-			err |= __put_user((short) kinfo->si_addr_lsb,
-					  &uinfo->ssi_addr_lsb);
-#endif
-		break;
-	case __SI_CHLD:
-		err |= __put_user(kinfo->si_pid, &uinfo->ssi_pid);
-		err |= __put_user(kinfo->si_uid, &uinfo->ssi_uid);
-		err |= __put_user(kinfo->si_status, &uinfo->ssi_status);
-		err |= __put_user(kinfo->si_utime, &uinfo->ssi_utime);
-		err |= __put_user(kinfo->si_stime, &uinfo->ssi_stime);
-		break;
-	case __SI_RT: /* This is not generated by the kernel as of now. */
-	case __SI_MESGQ: /* But this is */
-		err |= __put_user(kinfo->si_pid, &uinfo->ssi_pid);
-		err |= __put_user(kinfo->si_uid, &uinfo->ssi_uid);
-		err |= __put_user((long) kinfo->si_ptr, &uinfo->ssi_ptr);
-		err |= __put_user(kinfo->si_int, &uinfo->ssi_int);
-		break;
-	default:
-		/*
-		 * This case catches also the signals queued by sigqueue().
-		 */
-		err |= __put_user(kinfo->si_pid, &uinfo->ssi_pid);
-		err |= __put_user(kinfo->si_uid, &uinfo->ssi_uid);
-		err |= __put_user((long) kinfo->si_ptr, &uinfo->ssi_ptr);
-		err |= __put_user(kinfo->si_int, &uinfo->ssi_int);
-		break;
-	}
-
-	return err ? -EFAULT: sizeof(*uinfo);
-}
-
-static ssize_t signalfd_dequeue(struct signalfd_ctx *ctx, siginfo_t *info,
-				int nonblock)
-{
-	ssize_t ret;
-	DECLARE_WAITQUEUE(wait, current);
-
-	spin_lock_irq(&current->sighand->siglock);
-	ret = dequeue_signal(current, &ctx->sigmask, info);
-	switch (ret) {
-	case 0:
-		if (!nonblock)
-			break;
-		ret = -EAGAIN;
-	default:
-		spin_unlock_irq(&current->sighand->siglock);
-		return ret;
-	}
-
-	add_wait_queue(&current->sighand->signalfd_wqh, &wait);
-	for (;;) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		ret = dequeue_signal(current, &ctx->sigmask, info);
-		if (ret != 0)
-			break;
-		if (signal_pending(current)) {
-			ret = -ERESTARTSYS;
-			break;
-		}
-		spin_unlock_irq(&current->sighand->siglock);
-		schedule();
-		spin_lock_irq(&current->sighand->siglock);
-	}
-	spin_unlock_irq(&current->sighand->siglock);
-
-	remove_wait_queue(&current->sighand->signalfd_wqh, &wait);
-	__set_current_state(TASK_RUNNING);
-
-	return ret;
-}
-
-/*
- * Returns a multiple of the size of a "struct signalfd_siginfo", or a negative
- * error code. The "count" parameter must be at least the size of a
- * "struct signalfd_siginfo".
- */
-static ssize_t signalfd_read(struct file *file, char __user *buf, size_t count,
-			     loff_t *ppos)
-{
-	struct signalfd_ctx *ctx = file->private_data;
-	struct signalfd_siginfo __user *siginfo;
-	int nonblock = file->f_flags & O_NONBLOCK;
-	ssize_t ret, total = 0;
-	siginfo_t info;
-
-	count /= sizeof(struct signalfd_siginfo);
-	if (!count)
-		return -EINVAL;
-
-	siginfo = (struct signalfd_siginfo __user *) buf;
-	do {
-		ret = signalfd_dequeue(ctx, &info, nonblock);
-		if (unlikely(ret <= 0))
-			break;
-		ret = signalfd_copyinfo(siginfo, &info);
-		if (ret < 0)
-			break;
-		siginfo++;
-		total += ret;
-		nonblock = 1;
-	} while (--count);
-
-	return total ? total: ret;
-}
-
-static const struct file_operations signalfd_fops = {
-	.release	= signalfd_release,
-	.poll		= signalfd_poll,
-	.read		= signalfd_read,
-	.llseek		= noop_llseek,
-};
-
-SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask,
-		size_t, sizemask, int, flags)
-{
-	sigset_t sigmask;
-	struct signalfd_ctx *ctx;
-
-	/* Check the SFD_* constants for consistency.  */
-	BUILD_BUG_ON(SFD_CLOEXEC != O_CLOEXEC);
-	BUILD_BUG_ON(SFD_NONBLOCK != O_NONBLOCK);
-
-	if (flags & ~(SFD_CLOEXEC | SFD_NONBLOCK))
-		return -EINVAL;
-
-	if (sizemask != sizeof(sigset_t) ||
-	    copy_from_user(&sigmask, user_mask, sizeof(sigmask)))
-		return -EINVAL;
-	sigdelsetmask(&sigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
-	signotset(&sigmask);
-
-	if (ufd == -1) {
-		ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
-		if (!ctx)
-			return -ENOMEM;
-
-		ctx->sigmask = sigmask;
-
-		/*
-		 * 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,
-				       O_RDWR | (flags & (O_CLOEXEC | O_NONBLOCK)));
-		if (ufd < 0)
-			kfree(ctx);
-	} else {
-		struct file *file = fget(ufd);
-		if (!file)
-			return -EBADF;
-		ctx = file->private_data;
-		if (file->f_op != &signalfd_fops) {
-			fput(file);
-			return -EINVAL;
-		}
-		spin_lock_irq(&current->sighand->siglock);
-		ctx->sigmask = sigmask;
-		spin_unlock_irq(&current->sighand->siglock);
-
-		wake_up(&current->sighand->signalfd_wqh);
-		fput(file);
-	}
-
-	return ufd;
-}
-
-SYSCALL_DEFINE3(signalfd, int, ufd, sigset_t __user *, user_mask,
-		size_t, sizemask)
-{
-	return sys_signalfd4(ufd, user_mask, sizemask, 0);
-}