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, 781 deletions

diff --git a/ANDROID_3.4.5/fs/xattr.c b/ANDROID_3.4.5/fs/xattr.c
deleted file mode 100644
index 3c8c1cc3..00000000
--- a/ANDROID_3.4.5/fs/xattr.c
+++ /dev/null
@@ -1,781 +0,0 @@
-/*
-  File: fs/xattr.c
-
-  Extended attribute handling.
-
-  Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
-  Copyright (C) 2001 SGI - Silicon Graphics, Inc <linux-xfs@oss.sgi.com>
-  Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
- */
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/file.h>
-#include <linux/xattr.h>
-#include <linux/mount.h>
-#include <linux/namei.h>
-#include <linux/security.h>
-#include <linux/evm.h>
-#include <linux/syscalls.h>
-#include <linux/export.h>
-#include <linux/fsnotify.h>
-#include <linux/audit.h>
-#include <linux/vmalloc.h>
-
-#include <asm/uaccess.h>
-
-/*
- * Check permissions for extended attribute access.  This is a bit complicated
- * because different namespaces have very different rules.
- */
-static int
-xattr_permission(struct inode *inode, const char *name, int mask)
-{
-	/*
-	 * We can never set or remove an extended attribute on a read-only
-	 * filesystem  or on an immutable / append-only inode.
-	 */
-	if (mask & MAY_WRITE) {
-		if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-			return -EPERM;
-	}
-
-	/*
-	 * No restriction for security.* and system.* from the VFS.  Decision
-	 * on these is left to the underlying filesystem / security module.
-	 */
-	if (!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) ||
-	    !strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
-		return 0;
-
-	/*
-	 * The trusted.* namespace can only be accessed by privileged users.
-	 */
-	if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) {
-		if (!capable(CAP_SYS_ADMIN))
-			return (mask & MAY_WRITE) ? -EPERM : -ENODATA;
-		return 0;
-	}
-
-	/*
-	 * In the user.* namespace, only regular files and directories can have
-	 * extended attributes. For sticky directories, only the owner and
-	 * privileged users can write attributes.
-	 */
-	if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) {
-		if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
-			return (mask & MAY_WRITE) ? -EPERM : -ENODATA;
-		if (S_ISDIR(inode->i_mode) && (inode->i_mode & S_ISVTX) &&
-		    (mask & MAY_WRITE) && !inode_owner_or_capable(inode))
-			return -EPERM;
-	}
-
-	return inode_permission(inode, mask);
-}
-
-/**
- *  __vfs_setxattr_noperm - perform setxattr operation without performing
- *  permission checks.
- *
- *  @dentry - object to perform setxattr on
- *  @name - xattr name to set
- *  @value - value to set @name to
- *  @size - size of @value
- *  @flags - flags to pass into filesystem operations
- *
- *  returns the result of the internal setxattr or setsecurity operations.
- *
- *  This function requires the caller to lock the inode's i_mutex before it
- *  is executed. It also assumes that the caller will make the appropriate
- *  permission checks.
- */
-int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
-		const void *value, size_t size, int flags)
-{
-	struct inode *inode = dentry->d_inode;
-	int error = -EOPNOTSUPP;
-	int issec = !strncmp(name, XATTR_SECURITY_PREFIX,
-				   XATTR_SECURITY_PREFIX_LEN);
-
-	if (issec)
-		inode->i_flags &= ~S_NOSEC;
-	if (inode->i_op->setxattr) {
-		error = inode->i_op->setxattr(dentry, name, value, size, flags);
-		if (!error) {
-			fsnotify_xattr(dentry);
-			security_inode_post_setxattr(dentry, name, value,
-						     size, flags);
-		}
-	} else if (issec) {
-		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
-		error = security_inode_setsecurity(inode, suffix, value,
-						   size, flags);
-		if (!error)
-			fsnotify_xattr(dentry);
-	}
-
-	return error;
-}
-
-
-int
-vfs_setxattr(struct dentry *dentry, const char *name, const void *value,
-		size_t size, int flags)
-{
-	struct inode *inode = dentry->d_inode;
-	int error;
-
-	error = xattr_permission(inode, name, MAY_WRITE);
-	if (error)
-		return error;
-
-	mutex_lock(&inode->i_mutex);
-	error = security_inode_setxattr(dentry, name, value, size, flags);
-	if (error)
-		goto out;
-
-	error = __vfs_setxattr_noperm(dentry, name, value, size, flags);
-
-out:
-	mutex_unlock(&inode->i_mutex);
-	return error;
-}
-EXPORT_SYMBOL_GPL(vfs_setxattr);
-
-ssize_t
-xattr_getsecurity(struct inode *inode, const char *name, void *value,
-			size_t size)
-{
-	void *buffer = NULL;
-	ssize_t len;
-
-	if (!value || !size) {
-		len = security_inode_getsecurity(inode, name, &buffer, false);
-		goto out_noalloc;
-	}
-
-	len = security_inode_getsecurity(inode, name, &buffer, true);
-	if (len < 0)
-		return len;
-	if (size < len) {
-		len = -ERANGE;
-		goto out;
-	}
-	memcpy(value, buffer, len);
-out:
-	security_release_secctx(buffer, len);
-out_noalloc:
-	return len;
-}
-EXPORT_SYMBOL_GPL(xattr_getsecurity);
-
-/*
- * vfs_getxattr_alloc - allocate memory, if necessary, before calling getxattr
- *
- * Allocate memory, if not already allocated, or re-allocate correct size,
- * before retrieving the extended attribute.
- *
- * Returns the result of alloc, if failed, or the getxattr operation.
- */
-ssize_t
-vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
-		   size_t xattr_size, gfp_t flags)
-{
-	struct inode *inode = dentry->d_inode;
-	char *value = *xattr_value;
-	int error;
-
-	error = xattr_permission(inode, name, MAY_READ);
-	if (error)
-		return error;
-
-	if (!inode->i_op->getxattr)
-		return -EOPNOTSUPP;
-
-	error = inode->i_op->getxattr(dentry, name, NULL, 0);
-	if (error < 0)
-		return error;
-
-	if (!value || (error > xattr_size)) {
-		value = krealloc(*xattr_value, error + 1, flags);
-		if (!value)
-			return -ENOMEM;
-		memset(value, 0, error + 1);
-	}
-
-	error = inode->i_op->getxattr(dentry, name, value, error);
-	*xattr_value = value;
-	return error;
-}
-
-/* Compare an extended attribute value with the given value */
-int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
-		  const char *value, size_t size, gfp_t flags)
-{
-	char *xattr_value = NULL;
-	int rc;
-
-	rc = vfs_getxattr_alloc(dentry, xattr_name, &xattr_value, 0, flags);
-	if (rc < 0)
-		return rc;
-
-	if ((rc != size) || (memcmp(xattr_value, value, rc) != 0))
-		rc = -EINVAL;
-	else
-		rc = 0;
-	kfree(xattr_value);
-	return rc;
-}
-
-ssize_t
-vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
-{
-	struct inode *inode = dentry->d_inode;
-	int error;
-
-	error = xattr_permission(inode, name, MAY_READ);
-	if (error)
-		return error;
-
-	error = security_inode_getxattr(dentry, name);
-	if (error)
-		return error;
-
-	if (!strncmp(name, XATTR_SECURITY_PREFIX,
-				XATTR_SECURITY_PREFIX_LEN)) {
-		const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
-		int ret = xattr_getsecurity(inode, suffix, value, size);
-		/*
-		 * Only overwrite the return value if a security module
-		 * is actually active.
-		 */
-		if (ret == -EOPNOTSUPP)
-			goto nolsm;
-		return ret;
-	}
-nolsm:
-	if (inode->i_op->getxattr)
-		error = inode->i_op->getxattr(dentry, name, value, size);
-	else
-		error = -EOPNOTSUPP;
-
-	return error;
-}
-EXPORT_SYMBOL_GPL(vfs_getxattr);
-
-ssize_t
-vfs_listxattr(struct dentry *d, char *list, size_t size)
-{
-	ssize_t error;
-
-	error = security_inode_listxattr(d);
-	if (error)
-		return error;
-	error = -EOPNOTSUPP;
-	if (d->d_inode->i_op->listxattr) {
-		error = d->d_inode->i_op->listxattr(d, list, size);
-	} else {
-		error = security_inode_listsecurity(d->d_inode, list, size);
-		if (size && error > size)
-			error = -ERANGE;
-	}
-	return error;
-}
-EXPORT_SYMBOL_GPL(vfs_listxattr);
-
-int
-vfs_removexattr(struct dentry *dentry, const char *name)
-{
-	struct inode *inode = dentry->d_inode;
-	int error;
-
-	if (!inode->i_op->removexattr)
-		return -EOPNOTSUPP;
-
-	error = xattr_permission(inode, name, MAY_WRITE);
-	if (error)
-		return error;
-
-	error = security_inode_removexattr(dentry, name);
-	if (error)
-		return error;
-
-	mutex_lock(&inode->i_mutex);
-	error = inode->i_op->removexattr(dentry, name);
-	mutex_unlock(&inode->i_mutex);
-
-	if (!error) {
-		fsnotify_xattr(dentry);
-		evm_inode_post_removexattr(dentry, name);
-	}
-	return error;
-}
-EXPORT_SYMBOL_GPL(vfs_removexattr);
-
-
-/*
- * Extended attribute SET operations
- */
-static long
-setxattr(struct dentry *d, const char __user *name, const void __user *value,
-	 size_t size, int flags)
-{
-	int error;
-	void *kvalue = NULL;
-	void *vvalue = NULL;	/* If non-NULL, we used vmalloc() */
-	char kname[XATTR_NAME_MAX + 1];
-
-	if (flags & ~(XATTR_CREATE|XATTR_REPLACE))
-		return -EINVAL;
-
-	error = strncpy_from_user(kname, name, sizeof(kname));
-	if (error == 0 || error == sizeof(kname))
-		error = -ERANGE;
-	if (error < 0)
-		return error;
-
-	if (size) {
-		if (size > XATTR_SIZE_MAX)
-			return -E2BIG;
-		kvalue = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
-		if (!kvalue) {
-			vvalue = vmalloc(size);
-			if (!vvalue)
-				return -ENOMEM;
-			kvalue = vvalue;
-		}
-		if (copy_from_user(kvalue, value, size)) {
-			error = -EFAULT;
-			goto out;
-		}
-	}
-
-	error = vfs_setxattr(d, kname, kvalue, size, flags);
-out:
-	if (vvalue)
-		vfree(vvalue);
-	else
-		kfree(kvalue);
-	return error;
-}
-
-SYSCALL_DEFINE5(setxattr, const char __user *, pathname,
-		const char __user *, name, const void __user *, value,
-		size_t, size, int, flags)
-{
-	struct path path;
-	int error;
-
-	error = user_path(pathname, &path);
-	if (error)
-		return error;
-	error = mnt_want_write(path.mnt);
-	if (!error) {
-		error = setxattr(path.dentry, name, value, size, flags);
-		mnt_drop_write(path.mnt);
-	}
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE5(lsetxattr, const char __user *, pathname,
-		const char __user *, name, const void __user *, value,
-		size_t, size, int, flags)
-{
-	struct path path;
-	int error;
-
-	error = user_lpath(pathname, &path);
-	if (error)
-		return error;
-	error = mnt_want_write(path.mnt);
-	if (!error) {
-		error = setxattr(path.dentry, name, value, size, flags);
-		mnt_drop_write(path.mnt);
-	}
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name,
-		const void __user *,value, size_t, size, int, flags)
-{
-	struct file *f;
-	struct dentry *dentry;
-	int error = -EBADF;
-
-	f = fget(fd);
-	if (!f)
-		return error;
-	dentry = f->f_path.dentry;
-	audit_inode(NULL, dentry);
-	error = mnt_want_write_file(f);
-	if (!error) {
-		error = setxattr(dentry, name, value, size, flags);
-		mnt_drop_write_file(f);
-	}
-	fput(f);
-	return error;
-}
-
-/*
- * Extended attribute GET operations
- */
-static ssize_t
-getxattr(struct dentry *d, const char __user *name, void __user *value,
-	 size_t size)
-{
-	ssize_t error;
-	void *kvalue = NULL;
-	char kname[XATTR_NAME_MAX + 1];
-
-	error = strncpy_from_user(kname, name, sizeof(kname));
-	if (error == 0 || error == sizeof(kname))
-		error = -ERANGE;
-	if (error < 0)
-		return error;
-
-	if (size) {
-		if (size > XATTR_SIZE_MAX)
-			size = XATTR_SIZE_MAX;
-		kvalue = kzalloc(size, GFP_KERNEL);
-		if (!kvalue)
-			return -ENOMEM;
-	}
-
-	error = vfs_getxattr(d, kname, kvalue, size);
-	if (error > 0) {
-		if (size && copy_to_user(value, kvalue, error))
-			error = -EFAULT;
-	} else if (error == -ERANGE && size >= XATTR_SIZE_MAX) {
-		/* The file system tried to returned a value bigger
-		   than XATTR_SIZE_MAX bytes. Not possible. */
-		error = -E2BIG;
-	}
-	kfree(kvalue);
-	return error;
-}
-
-SYSCALL_DEFINE4(getxattr, const char __user *, pathname,
-		const char __user *, name, void __user *, value, size_t, size)
-{
-	struct path path;
-	ssize_t error;
-
-	error = user_path(pathname, &path);
-	if (error)
-		return error;
-	error = getxattr(path.dentry, name, value, size);
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE4(lgetxattr, const char __user *, pathname,
-		const char __user *, name, void __user *, value, size_t, size)
-{
-	struct path path;
-	ssize_t error;
-
-	error = user_lpath(pathname, &path);
-	if (error)
-		return error;
-	error = getxattr(path.dentry, name, value, size);
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE4(fgetxattr, int, fd, const char __user *, name,
-		void __user *, value, size_t, size)
-{
-	struct file *f;
-	ssize_t error = -EBADF;
-
-	f = fget(fd);
-	if (!f)
-		return error;
-	audit_inode(NULL, f->f_path.dentry);
-	error = getxattr(f->f_path.dentry, name, value, size);
-	fput(f);
-	return error;
-}
-
-/*
- * Extended attribute LIST operations
- */
-static ssize_t
-listxattr(struct dentry *d, char __user *list, size_t size)
-{
-	ssize_t error;
-	char *klist = NULL;
-	char *vlist = NULL;	/* If non-NULL, we used vmalloc() */
-
-	if (size) {
-		if (size > XATTR_LIST_MAX)
-			size = XATTR_LIST_MAX;
-		klist = kmalloc(size, __GFP_NOWARN | GFP_KERNEL);
-		if (!klist) {
-			vlist = vmalloc(size);
-			if (!vlist)
-				return -ENOMEM;
-			klist = vlist;
-		}
-	}
-
-	error = vfs_listxattr(d, klist, size);
-	if (error > 0) {
-		if (size && copy_to_user(list, klist, error))
-			error = -EFAULT;
-	} else if (error == -ERANGE && size >= XATTR_LIST_MAX) {
-		/* The file system tried to returned a list bigger
-		   than XATTR_LIST_MAX bytes. Not possible. */
-		error = -E2BIG;
-	}
-	if (vlist)
-		vfree(vlist);
-	else
-		kfree(klist);
-	return error;
-}
-
-SYSCALL_DEFINE3(listxattr, const char __user *, pathname, char __user *, list,
-		size_t, size)
-{
-	struct path path;
-	ssize_t error;
-
-	error = user_path(pathname, &path);
-	if (error)
-		return error;
-	error = listxattr(path.dentry, list, size);
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE3(llistxattr, const char __user *, pathname, char __user *, list,
-		size_t, size)
-{
-	struct path path;
-	ssize_t error;
-
-	error = user_lpath(pathname, &path);
-	if (error)
-		return error;
-	error = listxattr(path.dentry, list, size);
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE3(flistxattr, int, fd, char __user *, list, size_t, size)
-{
-	struct file *f;
-	ssize_t error = -EBADF;
-
-	f = fget(fd);
-	if (!f)
-		return error;
-	audit_inode(NULL, f->f_path.dentry);
-	error = listxattr(f->f_path.dentry, list, size);
-	fput(f);
-	return error;
-}
-
-/*
- * Extended attribute REMOVE operations
- */
-static long
-removexattr(struct dentry *d, const char __user *name)
-{
-	int error;
-	char kname[XATTR_NAME_MAX + 1];
-
-	error = strncpy_from_user(kname, name, sizeof(kname));
-	if (error == 0 || error == sizeof(kname))
-		error = -ERANGE;
-	if (error < 0)
-		return error;
-
-	return vfs_removexattr(d, kname);
-}
-
-SYSCALL_DEFINE2(removexattr, const char __user *, pathname,
-		const char __user *, name)
-{
-	struct path path;
-	int error;
-
-	error = user_path(pathname, &path);
-	if (error)
-		return error;
-	error = mnt_want_write(path.mnt);
-	if (!error) {
-		error = removexattr(path.dentry, name);
-		mnt_drop_write(path.mnt);
-	}
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE2(lremovexattr, const char __user *, pathname,
-		const char __user *, name)
-{
-	struct path path;
-	int error;
-
-	error = user_lpath(pathname, &path);
-	if (error)
-		return error;
-	error = mnt_want_write(path.mnt);
-	if (!error) {
-		error = removexattr(path.dentry, name);
-		mnt_drop_write(path.mnt);
-	}
-	path_put(&path);
-	return error;
-}
-
-SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name)
-{
-	struct file *f;
-	struct dentry *dentry;
-	int error = -EBADF;
-
-	f = fget(fd);
-	if (!f)
-		return error;
-	dentry = f->f_path.dentry;
-	audit_inode(NULL, dentry);
-	error = mnt_want_write_file(f);
-	if (!error) {
-		error = removexattr(dentry, name);
-		mnt_drop_write_file(f);
-	}
-	fput(f);
-	return error;
-}
-
-
-static const char *
-strcmp_prefix(const char *a, const char *a_prefix)
-{
-	while (*a_prefix && *a == *a_prefix) {
-		a++;
-		a_prefix++;
-	}
-	return *a_prefix ? NULL : a;
-}
-
-/*
- * In order to implement different sets of xattr operations for each xattr
- * prefix with the generic xattr API, a filesystem should create a
- * null-terminated array of struct xattr_handler (one for each prefix) and
- * hang a pointer to it off of the s_xattr field of the superblock.
- *
- * The generic_fooxattr() functions will use this list to dispatch xattr
- * operations to the correct xattr_handler.
- */
-#define for_each_xattr_handler(handlers, handler)		\
-		for ((handler) = *(handlers)++;			\
-			(handler) != NULL;			\
-			(handler) = *(handlers)++)
-
-/*
- * Find the xattr_handler with the matching prefix.
- */
-static const struct xattr_handler *
-xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
-{
-	const struct xattr_handler *handler;
-
-	if (!*name)
-		return NULL;
-
-	for_each_xattr_handler(handlers, handler) {
-		const char *n = strcmp_prefix(*name, handler->prefix);
-		if (n) {
-			*name = n;
-			break;
-		}
-	}
-	return handler;
-}
-
-/*
- * Find the handler for the prefix and dispatch its get() operation.
- */
-ssize_t
-generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size)
-{
-	const struct xattr_handler *handler;
-
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (!handler)
-		return -EOPNOTSUPP;
-	return handler->get(dentry, name, buffer, size, handler->flags);
-}
-
-/*
- * Combine the results of the list() operation from every xattr_handler in the
- * list.
- */
-ssize_t
-generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
-{
-	const struct xattr_handler *handler, **handlers = dentry->d_sb->s_xattr;
-	unsigned int size = 0;
-
-	if (!buffer) {
-		for_each_xattr_handler(handlers, handler) {
-			size += handler->list(dentry, NULL, 0, NULL, 0,
-					      handler->flags);
-		}
-	} else {
-		char *buf = buffer;
-
-		for_each_xattr_handler(handlers, handler) {
-			size = handler->list(dentry, buf, buffer_size,
-					     NULL, 0, handler->flags);
-			if (size > buffer_size)
-				return -ERANGE;
-			buf += size;
-			buffer_size -= size;
-		}
-		size = buf - buffer;
-	}
-	return size;
-}
-
-/*
- * Find the handler for the prefix and dispatch its set() operation.
- */
-int
-generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags)
-{
-	const struct xattr_handler *handler;
-
-	if (size == 0)
-		value = "";  /* empty EA, do not remove */
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (!handler)
-		return -EOPNOTSUPP;
-	return handler->set(dentry, name, value, size, flags, handler->flags);
-}
-
-/*
- * Find the handler for the prefix and dispatch its set() operation to remove
- * any associated extended attribute.
- */
-int
-generic_removexattr(struct dentry *dentry, const char *name)
-{
-	const struct xattr_handler *handler;
-
-	handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
-	if (!handler)
-		return -EOPNOTSUPP;
-	return handler->set(dentry, name, NULL, 0,
-			    XATTR_REPLACE, handler->flags);
-}
-
-EXPORT_SYMBOL(generic_getxattr);
-EXPORT_SYMBOL(generic_listxattr);
-EXPORT_SYMBOL(generic_setxattr);
-EXPORT_SYMBOL(generic_removexattr);