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28 .Dt ARCHIVE_WRITE_DATA 3
31 .Nm archive_write_data ,
32 .Nm archive_write_data_block
33 .Nd functions for creating archives
35 Streaming Archive Library (libarchive, -larchive)
39 .Fn archive_write_data "struct archive *" "const void *" "size_t"
41 .Fn archive_write_data_block "struct archive *" "const void *" "size_t size" "int64_t offset"
43 .Bl -tag -width indent
44 .It Fn archive_write_data
45 Write data corresponding to the header just written.
46 .It Fn archive_write_data_block
47 Write data corresponding to the header just written.
49 .Fn archive_write_data
50 except that it performs a seek on the file being
51 written to the specified offset before writing the data.
52 This is useful when restoring sparse files from archive
53 formats that support sparse files.
54 Returns number of bytes written or -1 on error.
55 (Note: This is currently not supported for
58 .Tn archive_write_disk
64 This function returns the number of bytes actually written, or
65 a negative error code on error.
68 Detailed error codes and textual descriptions are available from the
71 .Fn archive_error_string
75 In libarchive 3.x, this function sometimes returns
76 zero on success instead of returning the number of bytes written.
77 Specifically, this occurs when writing to an
78 .Vt archive_write_disk
80 Clients should treat any value less than zero as an error
81 and consider any non-negative value as success.
85 .Xr archive_write_finish_entry 3 ,
86 .Xr archive_write_set_options 3 ,