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C++ ecryptfs_file_to_lower函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中ecryptfs_file_to_lower函数的典型用法代码示例。如果您正苦于以下问题：C++ ecryptfs_file_to_lower函数的具体用法？C++ ecryptfs_file_to_lower怎么用？C++ ecryptfs_file_to_lower使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了ecryptfs_file_to_lower函数的16个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: ecryptfs_fsync

static int
ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
	int rc;

	rc = filemap_write_and_wait(file->f_mapping);
	if (rc)
		return rc;

	return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
}
开发者ID:StarKissed，项目名称:Note-4-AEL-Kernel，代码行数:11，代码来源:file.c


示例2: ecryptfs_flush

static int ecryptfs_flush(struct file *file, fl_owner_t td)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);

	if (lower_file->f_op && lower_file->f_op->flush) {
		filemap_write_and_wait(file->f_mapping);
		return lower_file->f_op->flush(lower_file, td);
	}

	return 0;
}
开发者ID:StarKissed，项目名称:Note-4-AEL-Kernel，代码行数:11，代码来源:file.c


示例3: ecryptfs_fasync

static int ecryptfs_fasync(int fd, struct file *file, int flag)
{
	int rc = 0;
	struct file *lower_file = NULL;

	lock_kernel();
	lower_file = ecryptfs_file_to_lower(file);
	if (lower_file->f_op && lower_file->f_op->fasync)
		rc = lower_file->f_op->fasync(fd, lower_file, flag);
	unlock_kernel();
	return rc;
}
开发者ID:maraz，项目名称:linux-2.6，代码行数:12，代码来源:file.c


示例4: ecryptfs_flush

static int ecryptfs_flush(struct file *file, fl_owner_t td)
{
	int rc = 0;
	struct file *lower_file = NULL;

	if (file) {
	    lower_file = ecryptfs_file_to_lower(file);
	    if (lower_file && lower_file->f_op && lower_file->f_op->flush)
		rc = lower_file->f_op->flush(lower_file, td);
	}
	return rc;
}
开发者ID:AvidAmiri，项目名称:kgpu，代码行数:12，代码来源:file.c


示例5: ecryptfs_mmap

static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);
	/*
	 * Don't allow mmap on top of file systems that don't support it
	 * natively.  If FILESYSTEM_MAX_STACK_DEPTH > 2 or ecryptfs
	 * allows recursive mounting, this will need to be extended.
	 */
	if (!lower_file->f_op->mmap)
		return -ENODEV;
	return generic_file_mmap(file, vma);
}
开发者ID:AICP，项目名称:kernel_moto_shamu，代码行数:12，代码来源:file.c


示例6: ecryptfs_compat_ioctl

static long
ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct file *lower_file = NULL;
	long rc = -ENOIOCTLCMD;

	if (ecryptfs_file_to_private(file))
		lower_file = ecryptfs_file_to_lower(file);
	if (lower_file && lower_file->f_op && lower_file->f_op->compat_ioctl)
		rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg);
	return rc;
}
开发者ID:AICP，项目名称:kernel_moto_shamu，代码行数:12，代码来源:file.c


示例7: ecryptfs_sendfile

static ssize_t ecryptfs_sendfile(struct file *file, loff_t * ppos,
				 size_t count, read_actor_t actor, void *target)
{
	struct file *lower_file = NULL;
	int rc = -EINVAL;

	lower_file = ecryptfs_file_to_lower(file);
	if (lower_file->f_op && lower_file->f_op->sendfile)
		rc = lower_file->f_op->sendfile(lower_file, ppos, count,
						actor, target);

	return rc;
}
开发者ID:ivucica，项目名称:linux，代码行数:13，代码来源:file.c


示例8: ecryptfs_fsync

static int
ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
	int rc = 0;

	rc = generic_file_fsync(file, start, end, datasync);
	if (rc)
		goto out;
	rc = vfs_fsync_range(ecryptfs_file_to_lower(file), start, end,
			     datasync);
out:
	return rc;
}
开发者ID:kozmikkick，项目名称:eternityprj-kernel-endeavoru-128，代码行数:13，代码来源:file.c


示例9: ecryptfs_ioctl

static int
ecryptfs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
	       unsigned long arg)
{
	int rc = 0;
	struct file *lower_file = NULL;

	if (ecryptfs_file_to_private(file))
		lower_file = ecryptfs_file_to_lower(file);
	if (lower_file && lower_file->f_op && lower_file->f_op->ioctl)
		rc = lower_file->f_op->ioctl(ecryptfs_inode_to_lower(inode),
					     lower_file, cmd, arg);
	else
		rc = -ENOTTY;
	return rc;
}
开发者ID:maraz，项目名称:linux-2.6，代码行数:16，代码来源:file.c


示例10: ecryptfs_release

static int ecryptfs_release(struct inode *inode, struct file *file)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);
	struct ecryptfs_file_info *file_info = ecryptfs_file_to_private(file);
	struct inode *lower_inode = ecryptfs_inode_to_lower(inode);
	int rc;

	if ((rc = ecryptfs_close_lower_file(lower_file))) {
		printk(KERN_ERR "Error closing lower_file\n");
		goto out;
	}
	inode->i_blocks = lower_inode->i_blocks;
	kmem_cache_free(ecryptfs_file_info_cache, file_info);
out:
	return rc;
}
开发者ID:ivucica，项目名称:linux，代码行数:16，代码来源:file.c


示例11: ecryptfs_fsync

static int
ecryptfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);
	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
	struct inode *lower_inode = lower_dentry->d_inode;
	int rc = -EINVAL;

	if (lower_inode->i_fop->fsync) {
		mutex_lock(&lower_inode->i_mutex);
		rc = lower_inode->i_fop->fsync(lower_file, lower_dentry,
					       datasync);
		mutex_unlock(&lower_inode->i_mutex);
	}
	return rc;
}
开发者ID:maraz，项目名称:linux-2.6，代码行数:16，代码来源:file.c


示例12: ecryptfs_sync_write

ssize_t ecryptfs_sync_write(struct file *filp, const char __user *buf, \
						size_t len, loff_t *ppos)
{
	ssize_t result;

	struct file *lower_file = NULL;
	if (unlikely(filp->f_flags & O_DIRECT)) {
		lower_file = ecryptfs_file_to_lower(filp);
		lower_file->f_flags |= O_DIRECT;
		lower_file->f_pos = filp->f_pos;
		result = vfs_write(lower_file, buf, len, ppos);
		filp->f_pos = lower_file->f_pos;
		return result;
	} else {
		return do_sync_write(filp, buf, len, ppos);
	}
}
开发者ID:dtrail，项目名称:JBX_Kernel，代码行数:17，代码来源:file.c


示例13: ecryptfs_compat_ioctl

static long
ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);
	long rc = -ENOIOCTLCMD;

	if (!lower_file->f_op->compat_ioctl)
		return rc;

	switch (cmd) {
	case FITRIM:
	case FS_IOC32_GETFLAGS:
	case FS_IOC32_SETFLAGS:
	case FS_IOC32_GETVERSION:
	case FS_IOC32_SETVERSION:
		rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg);
		fsstack_copy_attr_all(file_inode(file), file_inode(lower_file));

		return rc;
	default:
		return rc;
	}
}
开发者ID:daltenty，项目名称:kernel-ubuntu.trusty-vgt，代码行数:23，代码来源:file.c


示例14: ecryptfs_readdir

/**
 * ecryptfs_readdir
 * @file: The eCryptfs directory file
 * @ctx: The actor to feed the entries to
 */
static int ecryptfs_readdir(struct file *file, struct dir_context *ctx)
{
	int rc;
	struct file *lower_file;
	struct inode *inode = file_inode(file);
	struct ecryptfs_getdents_callback buf = {
		.ctx.actor = ecryptfs_filldir,
		.caller = ctx,
		.sb = inode->i_sb,
	};
	lower_file = ecryptfs_file_to_lower(file);
	lower_file->f_pos = ctx->pos;
	rc = iterate_dir(lower_file, &buf.ctx);
	ctx->pos = buf.ctx.pos;
	if (rc < 0)
		goto out;
	if (buf.filldir_called && !buf.entries_written)
		goto out;
	if (rc >= 0)
		fsstack_copy_attr_atime(inode,
					file_inode(lower_file));
out:
	return rc;
}

struct kmem_cache *ecryptfs_file_info_cache;

static int read_or_initialize_metadata(struct dentry *dentry)
{
	struct inode *inode = dentry->d_inode;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
	struct ecryptfs_crypt_stat *crypt_stat;
	int rc;

	crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
	mount_crypt_stat = &ecryptfs_superblock_to_private(
						inode->i_sb)->mount_crypt_stat;

#ifdef CONFIG_WTL_ENCRYPTION_FILTER
	if (crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED
		&& crypt_stat->flags & ECRYPTFS_POLICY_APPLIED
		&& crypt_stat->flags & ECRYPTFS_ENCRYPTED
		&& !(crypt_stat->flags & ECRYPTFS_KEY_VALID)
		&& !(crypt_stat->flags & ECRYPTFS_KEY_SET)
		&& crypt_stat->flags & ECRYPTFS_I_SIZE_INITIALIZED) {
		crypt_stat->flags |= ECRYPTFS_ENCRYPTED_OTHER_DEVICE;
	}
	mutex_lock(&crypt_stat->cs_mutex);
	if ((mount_crypt_stat->flags & ECRYPTFS_ENABLE_NEW_PASSTHROUGH)
			&& (crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
		if (ecryptfs_read_metadata(dentry)) {
			crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
					| ECRYPTFS_ENCRYPTED);
			rc = 0;
			goto out;
		}
	} else if ((mount_crypt_stat->flags & ECRYPTFS_ENABLE_FILTERING)
			&& (crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
		struct dentry *fp_dentry =
			ecryptfs_inode_to_private(inode)->lower_file->f_dentry;
		char filename[NAME_MAX+1] = {0};
		if (fp_dentry->d_name.len <= NAME_MAX)
			memcpy(filename, fp_dentry->d_name.name,
					fp_dentry->d_name.len + 1);

		if (is_file_name_match(mount_crypt_stat, fp_dentry)
			|| is_file_ext_match(mount_crypt_stat, filename)) {
			if (ecryptfs_read_metadata(dentry))
				crypt_stat->flags &=
				~(ECRYPTFS_I_SIZE_INITIALIZED
				| ECRYPTFS_ENCRYPTED);
			rc = 0;
			goto out;
		}
	}
	mutex_unlock(&crypt_stat->cs_mutex);
#endif

	mutex_lock(&crypt_stat->cs_mutex);

	if (crypt_stat->flags & ECRYPTFS_POLICY_APPLIED &&
	    crypt_stat->flags & ECRYPTFS_KEY_VALID) {
		rc = 0;
		goto out;
	}

	rc = ecryptfs_read_metadata(dentry);
	if (!rc)
		goto out;

#ifdef CONFIG_SDP
	/*
	 * no passthrough/xattr for sensitive files
	 */
	if ((rc) && crypt_stat->flags & ECRYPTFS_DEK_IS_SENSITIVE)
//.........这里部分代码省略.........
开发者ID:GAXUSXX，项目名称:G935FGaXusKernel2，代码行数:101，代码来源:file.c


示例15: ecryptfs_compat_ioctl

static long
ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct file *lower_file = ecryptfs_file_to_lower(file);
	long rc = -ENOIOCTLCMD;
#ifdef CONFIG_WTL_ENCRYPTION_FILTER
	if (cmd == ECRYPTFS_IOCTL_GET_ATTRIBUTES) {
		u32 __user *user_attr = (u32 __user *)arg;
		u32 attr = 0;
		char filename[NAME_MAX+1] = {0};
		struct dentry *ecryptfs_dentry = file->f_path.dentry;
		struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
			&ecryptfs_superblock_to_private(ecryptfs_dentry->d_sb)
				->mount_crypt_stat;

		struct inode *inode = ecryptfs_dentry->d_inode;
		struct ecryptfs_crypt_stat *crypt_stat =
			&ecryptfs_inode_to_private(inode)->crypt_stat;
		struct dentry *fp_dentry =
			ecryptfs_inode_to_private(inode)->lower_file->f_dentry;
		if (fp_dentry->d_name.len <= NAME_MAX)
			memcpy(filename, fp_dentry->d_name.name,
					fp_dentry->d_name.len + 1);

		mutex_lock(&crypt_stat->cs_mutex);
		if ((crypt_stat->flags & ECRYPTFS_ENCRYPTED
			|| crypt_stat->flags & ECRYPTFS_ENCRYPTED_OTHER_DEVICE)
			|| ((mount_crypt_stat->flags
					& ECRYPTFS_ENABLE_FILTERING)
				&& (is_file_name_match
					(mount_crypt_stat, fp_dentry)
				|| is_file_ext_match
					(mount_crypt_stat, filename)))) {
			if (crypt_stat->flags & ECRYPTFS_KEY_VALID)
				attr = ECRYPTFS_WAS_ENCRYPTED;
			else
				attr = ECRYPTFS_WAS_ENCRYPTED_OTHER_DEVICE;
		}
		mutex_unlock(&crypt_stat->cs_mutex);
		put_user(attr, user_attr);
		return 0;
	}
#endif

#ifdef CONFIG_SDP
	rc = ecryptfs_do_sdp_ioctl(file, cmd, arg);
	if (rc != EOPNOTSUPP)
		return rc;
#else
	printk("%s CONFIG_SDP not enabled \n", __func__);
#endif

	if (!lower_file->f_op->compat_ioctl)
		return rc;

	switch (cmd) {
	case FITRIM:
	case FS_IOC32_GETFLAGS:
	case FS_IOC32_SETFLAGS:
	case FS_IOC32_GETVERSION:
	case FS_IOC32_SETVERSION:
		rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg);
		fsstack_copy_attr_all(file_inode(file), file_inode(lower_file));

		return rc;
	default:
		return rc;
	}
}
开发者ID:GAXUSXX，项目名称:G935FGaXusKernel2，代码行数:69，代码来源:file.c


示例16: ecryptfs_readdir

/**
 * ecryptfs_readdir
 * @file: The eCryptfs directory file
 * @ctx: The actor to feed the entries to
 */
static int ecryptfs_readdir(struct file *file, struct dir_context *ctx)
{
	int rc;
	struct file *lower_file;
	struct inode *inode = file_inode(file);
	struct ecryptfs_getdents_callback buf = {
		.ctx.actor = ecryptfs_filldir,
		.caller = ctx,
		.sb = inode->i_sb,
	};
	lower_file = ecryptfs_file_to_lower(file);
	lower_file->f_pos = ctx->pos;
	rc = iterate_dir(lower_file, &buf.ctx);
	ctx->pos = buf.ctx.pos;
	if (rc < 0)
		goto out;
	if (buf.filldir_called && !buf.entries_written)
		goto out;
	if (rc >= 0)
		fsstack_copy_attr_atime(inode,
					file_inode(lower_file));
out:
	return rc;
}

struct kmem_cache *ecryptfs_file_info_cache;

static int read_or_initialize_metadata(struct dentry *dentry)
{
	struct inode *inode = dentry->d_inode;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
	struct ecryptfs_crypt_stat *crypt_stat;
	int rc;

	crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
	mount_crypt_stat = &ecryptfs_superblock_to_private(
						inode->i_sb)->mount_crypt_stat;
	mutex_lock(&crypt_stat->cs_mutex);

	if (crypt_stat->flags & ECRYPTFS_POLICY_APPLIED &&
	    crypt_stat->flags & ECRYPTFS_KEY_VALID) {
		rc = 0;
		goto out;
	}

	rc = ecryptfs_read_metadata(dentry);
	if (!rc)
		goto out;

	if (mount_crypt_stat->flags & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED) {
		crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
				       | ECRYPTFS_ENCRYPTED);
		rc = 0;
		goto out;
	}

	if (!(mount_crypt_stat->flags & ECRYPTFS_XATTR_METADATA_ENABLED) &&
	    !i_size_read(ecryptfs_inode_to_lower(inode))) {
		rc = ecryptfs_initialize_file(dentry, inode);
		if (!rc)
			goto out;
	}

	rc = -EIO;
out:
	mutex_unlock(&crypt_stat->cs_mutex);
	return rc;
}

/**
 * ecryptfs_open
 * @inode: inode speciying file to open
 * @file: Structure to return filled in
 *
 * Opens the file specified by inode.
 *
 * Returns zero on success; non-zero otherwise
 */
static int ecryptfs_open(struct inode *inode, struct file *file)
{
	int rc = 0;
	struct ecryptfs_crypt_stat *crypt_stat = NULL;
	struct dentry *ecryptfs_dentry = file->f_path.dentry;
	/* Private value of ecryptfs_dentry allocated in
	 * ecryptfs_lookup() */
	struct ecryptfs_file_info *file_info;

	/* Released in ecryptfs_release or end of function if failure */
	file_info = kmem_cache_zalloc(ecryptfs_file_info_cache, GFP_KERNEL);
	ecryptfs_set_file_private(file, file_info);
	if (!file_info) {
		ecryptfs_printk(KERN_ERR,
				"Error attempting to allocate memory\n");
		rc = -ENOMEM;
		goto out;
//.........这里部分代码省略.........
开发者ID:daltenty，项目名称:kernel-ubuntu.trusty-vgt，代码行数:101，代码来源:file.c



注：本文中的ecryptfs_file_to_lower函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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