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C++ ecryptfs_encrypt_and_encode_filename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_encrypt_and_encode_filename函数的典型用法代码示例。如果您正苦于以下问题：C++ ecryptfs_encrypt_and_encode_filename函数的具体用法？C++ ecryptfs_encrypt_and_encode_filename怎么用？C++ ecryptfs_encrypt_and_encode_filename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_encrypt_and_encode_filename函数的5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_dentry_to_lower

/**
 * ecryptfs_lookup
 * @ecryptfs_dir_inode: The eCryptfs directory inode
 * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
 * @ecryptfs_nd: nameidata; may be NULL
 *
 * Find a file on disk. If the file does not exist, then we'll add it to the
 * dentry cache and continue on to read it from the disk.
 */
static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
				      struct dentry *ecryptfs_dentry,
				      unsigned int flags)
{
	char *encrypted_and_encoded_name = NULL;
	size_t encrypted_and_encoded_name_size;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
	struct dentry *lower_dir_dentry, *lower_dentry;
	int rc = 0;

	lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
	mutex_lock(&lower_dir_dentry->d_inode->i_mutex);
	lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
				      lower_dir_dentry,
				      ecryptfs_dentry->d_name.len);
	mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
				"[%d] on lower_dentry = [%s]\n", __func__, rc,
				ecryptfs_dentry->d_name.name);
		goto out;
	}
	if (lower_dentry->d_inode)
		goto interpose;
	mount_crypt_stat = &ecryptfs_superblock_to_private(
				ecryptfs_dentry->d_sb)->mount_crypt_stat;
	if (!(mount_crypt_stat
	    && (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)))
		goto interpose;
	dput(lower_dentry);
	rc = ecryptfs_encrypt_and_encode_filename(
		&encrypted_and_encoded_name, &encrypted_and_encoded_name_size,
		NULL, mount_crypt_stat, ecryptfs_dentry->d_name.name,
		ecryptfs_dentry->d_name.len);
	if (rc) {
		printk(KERN_ERR "%s: Error attempting to encrypt and encode "
		       "filename; rc = [%d]\n", __func__, rc);
		goto out;
	}
	mutex_lock(&lower_dir_dentry->d_inode->i_mutex);
	lower_dentry = lookup_one_len(encrypted_and_encoded_name,
				      lower_dir_dentry,
				      encrypted_and_encoded_name_size);
	mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
				"[%d] on lower_dentry = [%s]\n", __func__, rc,
				encrypted_and_encoded_name);
		goto out;
	}
interpose:
	rc = ecryptfs_lookup_interpose(ecryptfs_dentry, lower_dentry,
				       ecryptfs_dir_inode);
out:
	kfree(encrypted_and_encoded_name);
	return ERR_PTR(rc);
}
开发者ID:sawdoctor，项目名称:Googy-Max-N4-Kernel，代码行数:68，代码来源:inode.c


示例2: ecryptfs_dentry_to_lower

/**
 * ecryptfs_lookup
 * @ecryptfs_dir_inode: The eCryptfs directory inode
 * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
 * @flags: lookup flags
 *
 * Find a file on disk. If the file does not exist, then we'll add it to the
 * dentry cache and continue on to read it from the disk.
 */
static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
				      struct dentry *ecryptfs_dentry,
				      unsigned int flags)
{
	char *encrypted_and_encoded_name = NULL;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
	struct dentry *lower_dir_dentry, *lower_dentry;
	const char *name = ecryptfs_dentry->d_name.name;
	size_t len = ecryptfs_dentry->d_name.len;
	struct dentry *res;
	int rc = 0;

	lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);

	mount_crypt_stat = &ecryptfs_superblock_to_private(
				ecryptfs_dentry->d_sb)->mount_crypt_stat;
	if (mount_crypt_stat
	    && (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)) {
		rc = ecryptfs_encrypt_and_encode_filename(
			&encrypted_and_encoded_name, &len,
			mount_crypt_stat, name, len);
		if (rc) {
			printk(KERN_ERR "%s: Error attempting to encrypt and encode "
			       "filename; rc = [%d]\n", __func__, rc);
			return ERR_PTR(rc);
		}
		name = encrypted_and_encoded_name;
	}

	lower_dentry = lookup_one_len_unlocked(name, lower_dir_dentry, len);
	if (IS_ERR(lower_dentry)) {
		ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
				"[%ld] on lower_dentry = [%s]\n", __func__,
				PTR_ERR(lower_dentry),
				name);
		res = ERR_CAST(lower_dentry);
	} else {
		res = ecryptfs_lookup_interpose(ecryptfs_dentry, lower_dentry);
	}
	kfree(encrypted_and_encoded_name);
	return res;
}
开发者ID:acton393，项目名称:linux，代码行数:51，代码来源:inode.c


示例3: ecryptfs_symlink

static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
			    const char *symname)
{
	int rc;
	struct dentry *lower_dentry;
	struct dentry *lower_dir_dentry;
	char *encoded_symname;
	size_t encoded_symlen;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;

	lower_dentry = ecryptfs_dentry_to_lower(dentry);
	dget(lower_dentry);
	lower_dir_dentry = lock_parent(lower_dentry);
	mount_crypt_stat = &ecryptfs_superblock_to_private(
		dir->i_sb)->mount_crypt_stat;
	rc = ecryptfs_encrypt_and_encode_filename(&encoded_symname,
						  &encoded_symlen,
						  NULL,
						  mount_crypt_stat, symname,
						  strlen(symname));
	if (rc)
		goto out_lock;
	rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
			 encoded_symname);
	kfree(encoded_symname);
	if (rc || !lower_dentry->d_inode)
		goto out_lock;
	rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
	if (rc)
		goto out_lock;
	fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
	fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
out_lock:
	unlock_dir(lower_dir_dentry);
	dput(lower_dentry);
	if (!dentry->d_inode)
		d_drop(dentry);
	return rc;
}
开发者ID:Vagelis1608，项目名称:-V-_Kernel_2，代码行数:39，代码来源:inode.c


示例4: ecryptfs_dentry_to_lower

/**
 * ecryptfs_lookup
 * @ecryptfs_dir_inode: The eCryptfs directory inode
 * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
 * @ecryptfs_nd: nameidata; may be NULL
 *
 * Find a file on disk. If the file does not exist, then we'll add it to the
 * dentry cache and continue on to read it from the disk.
 */
static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
				      struct dentry *ecryptfs_dentry,
				      struct nameidata *ecryptfs_nd)
{
	char *encrypted_and_encoded_name = NULL;
	size_t encrypted_and_encoded_name_size;
	struct ecryptfs_crypt_stat *crypt_stat = NULL;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
	struct ecryptfs_inode_info *inode_info;
	struct dentry *lower_dir_dentry, *lower_dentry;
	int rc = 0;

	ecryptfs_dentry->d_op = &ecryptfs_dops;
	if ((ecryptfs_dentry->d_name.len == 1
	     && !strcmp(ecryptfs_dentry->d_name.name, "."))
	    || (ecryptfs_dentry->d_name.len == 2
		&& !strcmp(ecryptfs_dentry->d_name.name, ".."))) {
		goto out_d_drop;
	}
	lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
	lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
				      lower_dir_dentry,
				      ecryptfs_dentry->d_name.len);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
		       "lower_dentry = [%s]\n", __func__, rc,
		       ecryptfs_dentry->d_name.name);
		goto out_d_drop;
	}
	if (lower_dentry->d_inode)
		goto lookup_and_interpose;
	inode_info =  ecryptfs_inode_to_private(ecryptfs_dentry->d_inode);
	if (inode_info) {
		crypt_stat = &inode_info->crypt_stat;
		/* TODO: lock for crypt_stat comparison */
		if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
			ecryptfs_set_default_sizes(crypt_stat);
	}
	if (crypt_stat)
		mount_crypt_stat = crypt_stat->mount_crypt_stat;
	else
		mount_crypt_stat = &ecryptfs_superblock_to_private(
			ecryptfs_dentry->d_sb)->mount_crypt_stat;
	if (!(crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCRYPT_FILENAMES))
	    && !(mount_crypt_stat && (mount_crypt_stat->flags
				     & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)))
		goto lookup_and_interpose;
	dput(lower_dentry);
	rc = ecryptfs_encrypt_and_encode_filename(
		&encrypted_and_encoded_name, &encrypted_and_encoded_name_size,
		crypt_stat, mount_crypt_stat, ecryptfs_dentry->d_name.name,
		ecryptfs_dentry->d_name.len);
	if (rc) {
		printk(KERN_ERR "%s: Error attempting to encrypt and encode "
		       "filename; rc = [%d]\n", __func__, rc);
		goto out_d_drop;
	}
	lower_dentry = lookup_one_len(encrypted_and_encoded_name,
				      lower_dir_dentry,
				      encrypted_and_encoded_name_size - 1);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
		       "lower_dentry = [%s]\n", __func__, rc,
		       encrypted_and_encoded_name);
		goto out_d_drop;
	}
lookup_and_interpose:
	rc = ecryptfs_lookup_and_interpose_lower(ecryptfs_dentry, lower_dentry,
						 crypt_stat, ecryptfs_dir_inode,
						 ecryptfs_nd);
	goto out;
out_d_drop:
	d_drop(ecryptfs_dentry);
out:
	kfree(encrypted_and_encoded_name);
	return ERR_PTR(rc);
}
开发者ID:melgurth，项目名称:i780-kernel，代码行数:88，代码来源:inode.c


示例5: ecryptfs_dentry_to_lower

/**
 * ecryptfs_lookup
 * @ecryptfs_dir_inode: The eCryptfs directory inode
 * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
 * @ecryptfs_nd: nameidata; may be NULL
 *
 * Find a file on disk. If the file does not exist, then we'll add it to the
 * dentry cache and continue on to read it from the disk.
 */
static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
				      struct dentry *ecryptfs_dentry,
				      unsigned int flags)
{
	char *encrypted_and_encoded_name = NULL;
	size_t encrypted_and_encoded_name_size;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
	struct dentry *lower_dir_dentry, *lower_dentry;
	int rc = 0;

	lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
	mutex_lock(&lower_dir_dentry->d_inode->i_mutex);
	lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
				      lower_dir_dentry,
				      ecryptfs_dentry->d_name.len);
	mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
				"[%d] on lower_dentry = [%s]\n", __func__, rc,
				ecryptfs_dentry->d_name.name);
		goto out;
	}
	if (lower_dentry->d_inode)
		goto interpose;
	mount_crypt_stat = &ecryptfs_superblock_to_private(
				ecryptfs_dentry->d_sb)->mount_crypt_stat;
	if (!(mount_crypt_stat
	    && (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)))
		goto interpose;
	dput(lower_dentry);
	rc = ecryptfs_encrypt_and_encode_filename(
		&encrypted_and_encoded_name, &encrypted_and_encoded_name_size,
		NULL, mount_crypt_stat, ecryptfs_dentry->d_name.name,
		ecryptfs_dentry->d_name.len);
	if (rc) {
		printk(KERN_ERR "%s: Error attempting to encrypt and encode "
		       "filename; rc = [%d]\n", __func__, rc);
		goto out;
	}
	mutex_lock(&lower_dir_dentry->d_inode->i_mutex);

#ifdef CONFIG_SDP
	if(!strncmp(lower_dir_dentry->d_sb->s_type->name, "sdcardfs", 8)) {
		struct sdcardfs_dentry_info *dinfo = SDCARDFS_D(lower_dir_dentry);
		int len = strlen(ecryptfs_dentry->d_name.name);
		int i, numeric = 1;

		dinfo->under_knox = 1;
		dinfo->userid = -1;
		if(IS_UNDER_ROOT(ecryptfs_dentry)) {
			for(i=0 ; i < len ; i++)
				if(!isdigit(ecryptfs_dentry->d_name.name[i])) { numeric = 0; break; }
			if(numeric) {
				dinfo->userid = simple_strtoul(ecryptfs_dentry->d_name.name, NULL, 10);
			}
		}
	}
#endif
	lower_dentry = lookup_one_len(encrypted_and_encoded_name,
				      lower_dir_dentry,
				      encrypted_and_encoded_name_size);
#ifdef CONFIG_SDP
	if(!strncmp(lower_dir_dentry->d_sb->s_type->name, "sdcardfs", 8)) {
		struct sdcardfs_dentry_info *dinfo = SDCARDFS_D(lower_dir_dentry);
		dinfo->under_knox = 0;
		dinfo->userid = -1;
	}
#endif
	mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
	if (IS_ERR(lower_dentry)) {
		rc = PTR_ERR(lower_dentry);
		ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
				"[%d] on lower_dentry = [%s]\n", __func__, rc,
				encrypted_and_encoded_name);
		goto out;
	}
interpose:
	rc = ecryptfs_lookup_interpose(ecryptfs_dentry, lower_dentry,
				       ecryptfs_dir_inode);
out:
	kfree(encrypted_and_encoded_name);
	return ERR_PTR(rc);
}
开发者ID:engine95，项目名称:exynos5433-MM-NNKernel，代码行数:93，代码来源:inode.c



注：本文中的ecryptfs_encrypt_and_encode_filename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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