th_read(3)                      C Library Calls                     th_read(3)

NAME
       th_read, th_write - read and write a file header block from a tar
       archive

SYNOPSIS
       #include <libtar.h>

       int th_read(TAR *t);

       int th_write(TAR *t);

VERSION
       This man page documents version 1.2 of libtar.

DESCRIPTION
       The th_read() function reads the next block from the tar archive
       associated with the TAR handle t.  It then sets the current tar header
       associated with t to the contents of the block read.

       The th_write() function writes the contents of the current tar header
       associated with t to the tar archive associated with t.

RETURN VALUE
       On successful completion, th_read() and th_write() will return 0.  On
       failure, they will return -1 and set errno to an appropriate value.

       On EOF, th_read() will return 1.

ERRORS
       th_read() and th_write() will fail if:

       EINVAL Less than T_BLOCKSIZE blocks were read or written.

SEE ALSO
       tar_block_read(3), tar_block_write(3)

University of Illinois             Jan 2001                         th_read(3)