1ARCHIVE_WRITE_DATA(3) BSD Library Functions Manual ARCHIVE_WRITE_DATA(3)
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4 archive_write_data, archive_write_data_block — functions for creating ar‐
5 chives
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8 Streaming Archive Library (libarchive, -larchive)
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11 #include <archive.h>
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13 la_ssize_t
14 archive_write_data(struct archive *, const void *, size_t);
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16 la_ssize_t
17 archive_write_data_block(struct archive *, const void *, size_t size,
18 int64_t offset);
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21 archive_write_data()
22 Write data corresponding to the header just written.
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24 archive_write_data_block()
25 Write data corresponding to the header just written. This is
26 like archive_write_data() except that it performs a seek on the
27 file being written to the specified offset before writing the
28 data. This is useful when restoring sparse files from archive
29 formats that support sparse files. Returns number of bytes writ‐
30 ten or -1 on error. (Note: This is currently not supported for
31 archive_write handles, only for archive_write_disk handles.
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34 This function returns the number of bytes actually written, or a negative
35 error code on error.
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38 Detailed error codes and textual descriptions are available from the
39 archive_errno() and archive_error_string() functions.
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42 In libarchive 3.x, this function sometimes returns zero on success
43 instead of returning the number of bytes written. Specifically, this
44 occurs when writing to an archive_write_disk handle. Clients should
45 treat any value less than zero as an error and consider any non-negative
46 value as success.
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49 tar(1), libarchive(3), archive_write_finish_entry(3),
50 archive_write_set_options(3), cpio(5), mtree(5), tar(5)
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52BSD February 28, 2017 BSD