checksum

compute MD5, SHAx or CRC checksum of file

This call computes the MD5, SHAx or CRC checksum of the file named path.

The type of checksum to compute is given by the csumtype parameter which must have one of the following values:

crc Compute the cyclic redundancy check (CRC) specified by POSIX for the cksum command.

md5 Compute the MD5 hash (using the md5sum program).

sha1 Compute the SHA1 hash (using the sha1sum program).

sha224 Compute the SHA224 hash (using the sha224sum program).

sha256 Compute the SHA256 hash (using the sha256sum program).

sha384 Compute the SHA384 hash (using the sha384sum program).

sha512 Compute the SHA512 hash (using the sha512sum program).

The checksum is returned as a printable string.

To get the checksum for a device, use checksum_device .

To get the checksums for many files, use checksums_out.

Parameters:

this	A GuestfsSession object

Returns:

the returned string, or NULL on error