1 files changed, 0 insertions, 439 deletions
diff --git a/ANDROID_3.4.5/fs/ext4/acl.c b/ANDROID_3.4.5/fs/ext4/acl.c
deleted file mode 100644
index a5c29bb3..00000000
--- a/ANDROID_3.4.5/fs/ext4/acl.c
+++ /dev/null
@@ -1,439 +0,0 @@
-/*
- * linux/fs/ext4/acl.c
- *
- * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
- */
-
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/capability.h>
-#include <linux/fs.h>
-#include "ext4_jbd2.h"
-#include "ext4.h"
-#include "xattr.h"
-#include "acl.h"
-
-/*
- * Convert from filesystem to in-memory representation.
- */
-static struct posix_acl *
-ext4_acl_from_disk(const void *value, size_t size)
-{
-	const char *end = (char *)value + size;
-	int n, count;
-	struct posix_acl *acl;
-
-	if (!value)
-		return NULL;
-	if (size < sizeof(ext4_acl_header))
-		 return ERR_PTR(-EINVAL);
-	if (((ext4_acl_header *)value)->a_version !=
-	    cpu_to_le32(EXT4_ACL_VERSION))
-		return ERR_PTR(-EINVAL);
-	value = (char *)value + sizeof(ext4_acl_header);
-	count = ext4_acl_count(size);
-	if (count < 0)
-		return ERR_PTR(-EINVAL);
-	if (count == 0)
-		return NULL;
-	acl = posix_acl_alloc(count, GFP_NOFS);
-	if (!acl)
-		return ERR_PTR(-ENOMEM);
-	for (n = 0; n < count; n++) {
-		ext4_acl_entry *entry =
-			(ext4_acl_entry *)value;
-		if ((char *)value + sizeof(ext4_acl_entry_short) > end)
-			goto fail;
-		acl->a_entries[n].e_tag  = le16_to_cpu(entry->e_tag);
-		acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
-
-		switch (acl->a_entries[n].e_tag) {
-		case ACL_USER_OBJ:
-		case ACL_GROUP_OBJ:
-		case ACL_MASK:
-		case ACL_OTHER:
-			value = (char *)value +
-				sizeof(ext4_acl_entry_short);
-			acl->a_entries[n].e_id = ACL_UNDEFINED_ID;
-			break;
-
-		case ACL_USER:
-		case ACL_GROUP:
-			value = (char *)value + sizeof(ext4_acl_entry);
-			if ((char *)value > end)
-				goto fail;
-			acl->a_entries[n].e_id =
-				le32_to_cpu(entry->e_id);
-			break;
-
-		default:
-			goto fail;
-		}
-	}
-	if (value != end)
-		goto fail;
-	return acl;
-
-fail:
-	posix_acl_release(acl);
-	return ERR_PTR(-EINVAL);
-}
-
-/*
- * Convert from in-memory to filesystem representation.
- */
-static void *
-ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
-{
-	ext4_acl_header *ext_acl;
-	char *e;
-	size_t n;
-
-	*size = ext4_acl_size(acl->a_count);
-	ext_acl = kmalloc(sizeof(ext4_acl_header) + acl->a_count *
-			sizeof(ext4_acl_entry), GFP_NOFS);
-	if (!ext_acl)
-		return ERR_PTR(-ENOMEM);
-	ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
-	e = (char *)ext_acl + sizeof(ext4_acl_header);
-	for (n = 0; n < acl->a_count; n++) {
-		ext4_acl_entry *entry = (ext4_acl_entry *)e;
-		entry->e_tag  = cpu_to_le16(acl->a_entries[n].e_tag);
-		entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
-		switch (acl->a_entries[n].e_tag) {
-		case ACL_USER:
-		case ACL_GROUP:
-			entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
-			e += sizeof(ext4_acl_entry);
-			break;
-
-		case ACL_USER_OBJ:
-		case ACL_GROUP_OBJ:
-		case ACL_MASK:
-		case ACL_OTHER:
-			e += sizeof(ext4_acl_entry_short);
-			break;
-
-		default:
-			goto fail;
-		}
-	}
-	return (char *)ext_acl;
-
-fail:
-	kfree(ext_acl);
-	return ERR_PTR(-EINVAL);
-}
-
-/*
- * Inode operation get_posix_acl().
- *
- * inode->i_mutex: don't care
- */
-struct posix_acl *
-ext4_get_acl(struct inode *inode, int type)
-{
-	int name_index;
-	char *value = NULL;
-	struct posix_acl *acl;
-	int retval;
-
-	if (!test_opt(inode->i_sb, POSIX_ACL))
-		return NULL;
-
-	acl = get_cached_acl(inode, type);
-	if (acl != ACL_NOT_CACHED)
-		return acl;
-
-	switch (type) {
-	case ACL_TYPE_ACCESS:
-		name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
-		break;
-	case ACL_TYPE_DEFAULT:
-		name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
-		break;
-	default:
-		BUG();
-	}
-	retval = ext4_xattr_get(inode, name_index, "", NULL, 0);
-	if (retval > 0) {
-		value = kmalloc(retval, GFP_NOFS);
-		if (!value)
-			return ERR_PTR(-ENOMEM);
-		retval = ext4_xattr_get(inode, name_index, "", value, retval);
-	}
-	if (retval > 0)
-		acl = ext4_acl_from_disk(value, retval);
-	else if (retval == -ENODATA || retval == -ENOSYS)
-		acl = NULL;
-	else
-		acl = ERR_PTR(retval);
-	kfree(value);
-
-	if (!IS_ERR(acl))
-		set_cached_acl(inode, type, acl);
-
-	return acl;
-}
-
-/*
- * Set the access or default ACL of an inode.
- *
- * inode->i_mutex: down unless called from ext4_new_inode
- */
-static int
-ext4_set_acl(handle_t *handle, struct inode *inode, int type,
-	     struct posix_acl *acl)
-{
-	int name_index;
-	void *value = NULL;
-	size_t size = 0;
-	int error;
-
-	if (S_ISLNK(inode->i_mode))
-		return -EOPNOTSUPP;
-
-	switch (type) {
-	case ACL_TYPE_ACCESS:
-		name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
-		if (acl) {
-			error = posix_acl_equiv_mode(acl, &inode->i_mode);
-			if (error < 0)
-				return error;
-			else {
-				inode->i_ctime = ext4_current_time(inode);
-				ext4_mark_inode_dirty(handle, inode);
-				if (error == 0)
-					acl = NULL;
-			}
-		}
-		break;
-
-	case ACL_TYPE_DEFAULT:
-		name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
-		if (!S_ISDIR(inode->i_mode))
-			return acl ? -EACCES : 0;
-		break;
-
-	default:
-		return -EINVAL;
-	}
-	if (acl) {
-		value = ext4_acl_to_disk(acl, &size);
-		if (IS_ERR(value))
-			return (int)PTR_ERR(value);
-	}
-
-	error = ext4_xattr_set_handle(handle, inode, name_index, "",
-				      value, size, 0);
-
-	kfree(value);
-	if (!error)
-		set_cached_acl(inode, type, acl);
-
-	return error;
-}
-
-/*
- * Initialize the ACLs of a new inode. Called from ext4_new_inode.
- *
- * dir->i_mutex: down
- * inode->i_mutex: up (access to inode is still exclusive)
- */
-int
-ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
-{
-	struct posix_acl *acl = NULL;
-	int error = 0;
-
-	if (!S_ISLNK(inode->i_mode)) {
-		if (test_opt(dir->i_sb, POSIX_ACL)) {
-			acl = ext4_get_acl(dir, ACL_TYPE_DEFAULT);
-			if (IS_ERR(acl))
-				return PTR_ERR(acl);
-		}
-		if (!acl)
-			inode->i_mode &= ~current_umask();
-	}
-	if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
-		if (S_ISDIR(inode->i_mode)) {
-			error = ext4_set_acl(handle, inode,
-					     ACL_TYPE_DEFAULT, acl);
-			if (error)
-				goto cleanup;
-		}
-		error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
-		if (error < 0)
-			return error;
-
-		if (error > 0) {
-			/* This is an extended ACL */
-			error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
-		}
-	}
-cleanup:
-	posix_acl_release(acl);
-	return error;
-}
-
-/*
- * Does chmod for an inode that may have an Access Control List. The
- * inode->i_mode field must be updated to the desired value by the caller
- * before calling this function.
- * Returns 0 on success, or a negative error number.
- *
- * We change the ACL rather than storing some ACL entries in the file
- * mode permission bits (which would be more efficient), because that
- * would break once additional permissions (like  ACL_APPEND, ACL_DELETE
- * for directories) are added. There are no more bits available in the
- * file mode.
- *
- * inode->i_mutex: down
- */
-int
-ext4_acl_chmod(struct inode *inode)
-{
-	struct posix_acl *acl;
-	handle_t *handle;
-	int retries = 0;
-	int error;
-
-
-	if (S_ISLNK(inode->i_mode))
-		return -EOPNOTSUPP;
-	if (!test_opt(inode->i_sb, POSIX_ACL))
-		return 0;
-	acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
-	if (IS_ERR(acl) || !acl)
-		return PTR_ERR(acl);
-	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
-	if (error)
-		return error;
-retry:
-	handle = ext4_journal_start(inode,
-			EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
-	if (IS_ERR(handle)) {
-		error = PTR_ERR(handle);
-		ext4_std_error(inode->i_sb, error);
-		goto out;
-	}
-	error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
-	ext4_journal_stop(handle);
-	if (error == -ENOSPC &&
-	    ext4_should_retry_alloc(inode->i_sb, &retries))
-		goto retry;
-out:
-	posix_acl_release(acl);
-	return error;
-}
-
-/*
- * Extended attribute handlers
- */
-static size_t
-ext4_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_len,
-			   const char *name, size_t name_len, int type)
-{
-	const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
-
-	if (!test_opt(dentry->d_sb, POSIX_ACL))
-		return 0;
-	if (list && size <= list_len)
-		memcpy(list, POSIX_ACL_XATTR_ACCESS, size);
-	return size;
-}
-
-static size_t
-ext4_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_len,
-			    const char *name, size_t name_len, int type)
-{
-	const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
-
-	if (!test_opt(dentry->d_sb, POSIX_ACL))
-		return 0;
-	if (list && size <= list_len)
-		memcpy(list, POSIX_ACL_XATTR_DEFAULT, size);
-	return size;
-}
-
-static int
-ext4_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
-		   size_t size, int type)
-{
-	struct posix_acl *acl;
-	int error;
-
-	if (strcmp(name, "") != 0)
-		return -EINVAL;
-	if (!test_opt(dentry->d_sb, POSIX_ACL))
-		return -EOPNOTSUPP;
-
-	acl = ext4_get_acl(dentry->d_inode, type);
-	if (IS_ERR(acl))
-		return PTR_ERR(acl);
-	if (acl == NULL)
-		return -ENODATA;
-	error = posix_acl_to_xattr(acl, buffer, size);
-	posix_acl_release(acl);
-
-	return error;
-}
-
-static int
-ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
-		   size_t size, int flags, int type)
-{
-	struct inode *inode = dentry->d_inode;
-	handle_t *handle;
-	struct posix_acl *acl;
-	int error, retries = 0;
-
-	if (strcmp(name, "") != 0)
-		return -EINVAL;
-	if (!test_opt(inode->i_sb, POSIX_ACL))
-		return -EOPNOTSUPP;
-	if (!inode_owner_or_capable(inode))
-		return -EPERM;
-
-	if (value) {
-		acl = posix_acl_from_xattr(value, size);
-		if (IS_ERR(acl))
-			return PTR_ERR(acl);
-		else if (acl) {
-			error = posix_acl_valid(acl);
-			if (error)
-				goto release_and_out;
-		}
-	} else
-		acl = NULL;
-
-retry:
-	handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
-	if (IS_ERR(handle))
-		return PTR_ERR(handle);
-	error = ext4_set_acl(handle, inode, type, acl);
-	ext4_journal_stop(handle);
-	if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
-		goto retry;
-
-release_and_out:
-	posix_acl_release(acl);
-	return error;
-}
-
-const struct xattr_handler ext4_xattr_acl_access_handler = {
-	.prefix	= POSIX_ACL_XATTR_ACCESS,
-	.flags	= ACL_TYPE_ACCESS,
-	.list	= ext4_xattr_list_acl_access,
-	.get	= ext4_xattr_get_acl,
-	.set	= ext4_xattr_set_acl,
-};
-
-const struct xattr_handler ext4_xattr_acl_default_handler = {
-	.prefix	= POSIX_ACL_XATTR_DEFAULT,
-	.flags	= ACL_TYPE_DEFAULT,
-	.list	= ext4_xattr_list_acl_default,
-	.get	= ext4_xattr_get_acl,
-	.set	= ext4_xattr_set_acl,
-};