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ARCHIVE_WRITE_DATA(3) BSD Library Functions Manual ARCHIVE_WRITE_DATA(3)
NAME
archive_write_data, archive_write_data_block — functions for creating ar‐
chives
LIBRARY
Streaming Archive Library (libarchive, -larchive)
SYNOPSIS
#include <archive.h>
la_ssize_t
archive_write_data(struct archive *, const void *, size_t);
la_ssize_t
archive_write_data_block(struct archive *, const void *, size_t size,
int64_t offset);
DESCRIPTION
archive_write_data()
Write data corresponding to the header just written.
archive_write_data_block()
Write data corresponding to the header just written. This is
like archive_write_data() except that it performs a seek on the
file being written to the specified offset before writing the
data. This is useful when restoring sparse files from archive
formats that support sparse files. Returns number of bytes writ‐
ten or -1 on error. (Note: This is currently not supported for
archive_write handles, only for archive_write_disk handles.
RETURN VALUES
This function returns the number of bytes actually written, or a negative
error code on error.
ERRORS
Detailed error codes and textual descriptions are available from the
archive_errno() and archive_error_string() functions.
BUGS
In libarchive 3.x, this function sometimes returns zero on success
instead of returning the number of bytes written. Specifically, this
occurs when writing to an archive_write_disk handle. Clients should
treat any value less than zero as an error and consider any non-negative
value as success.
SEE ALSO
tar(1), libarchive(3), archive_write_finish_entry(3),
archive_write_set_options(3), cpio(5), mtree(5), tar(5)
BSD February 28, 2017 BSD
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