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fs_crypto_domain_key_check()
Determine if a given domain key is valid

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      - fs_crypto_check()
        Determine if the underlying filesystem supports encryption
      - fs_crypto_domain_add()
        Create a domain
      - fs_crypto_domain_add_flags()
        Create an encryption domain and unlock it if requested
      - fs_crypto_domain_hard_lock()
        Lock a domain
      - fs_crypto_domain_key_change()
        Change the key needed to unlock the specified domain
      - fs_crypto_domain_key_check()
        Determine if a given domain key is valid
      - fs_crypto_domain_key_size()
        Return the size of keys needed by the filesystem encryption
      - fs_crypto_domain_lock()
        Lock a domain
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        Get status information for a domain
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        Destroy a domain
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        Unlock a domain
      - fs_crypto_domain_whitelist_configure()
        Perform whitelist configuration for a domain whitelist
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        Perform a control action for a domain whitelist
      - fs_crypto_domain_whitelist_ctrl_access_grant()
        Grant a client access to a domain
      - fs_crypto_domain_whitelist_ctrl_access_revoke()
        Revoke a client's access to a domain
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        Get the flags for a domain whitelist
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        Perform whitelist configuration for a domain whitelist
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        Enable encryption support on a filesystem
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        Set the domain of a file or directory
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        Generate an encryption key from a password
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        Mark an entire directory for migration into an encryption domain
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        Get the status of migration in the filesystem
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        Mark a file for migration into an encryption domain
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fs_crypto_domain_key_check()

QNX SDP8.0C Library ReferenceAPIDeveloper

Determine if a given domain key is valid

Synopsis:

#include <fs_crypto_api.h>
#include <sys/fs_crypto.h>

int fs_crypto_domain_key_check( const char *path,
                                int domain,
                                int length,
                                const uint8_t bytes[],
                                int *preply );

Arguments:

path: The path to the filesystem's mountpoint.
domain: The number of the domain whose key you want to check.
length: The number of bytes available in the key array.
bytes: The binary representation of the key.
preply: A pointer to a location where the function can store additional success or error information.

Library:

libfscrypto

Use the -l fscrypto option to qcc to link against this library.

Description:

The fs_crypto_domain_key_check() function determines if a given domain key is valid.

Note:

In order to use filesystem encryption, download the Encrypted Filesystem package from the QNX Software Center.

This function sets the variable pointed to by preply to one of the following values:

FS_CRYPTO_REPLY_BAD_KEY: The key is invalid.
FS_CRYPTO_REPLY_COMPLETE: The key is valid.
FS_CRYPTO_REPLY_ERRNO: See the error code for more information.
FS_CRYPTO_REPLY_INVALID: The command wasn't completed successfully.
FS_CRYPTO_REPLY_UNKNOWN_DOMAIN: There's no domain with the given number.
FS_CRYPTO_REPLY_UNKNOWN_TYPE: The type of encryption used for the domain is invalid.

Returns:

EOK: Success.
EBADFSYS: An inconsistency was found in the domain key in the filesystem.
EINVAL: Invalid arguments.
ENOMEM: Insufficent free memory.

This function can also return any of the errors indicated by devctl() or open().

Classification:


Safety:
Cancellation point	Yes
Signal handler	No
Thread	Yes

Page updated: August 11, 2025