1ZIP_FILE_SET_MTIME(3) BSD Library Functions Manual ZIP_FILE_SET_MTIME(3)
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4 zip_file_set_dostime, zip_file_set_mtime — set last modification time
5 (mtime) for file in zip
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8 libzip (-lzip)
9
11 #include <zip.h>
12
13 int
14 zip_file_set_dostime(zip_t *archive, zip_uint64_t index,
15 zip_uint16_t dostime, zip_uint16_t dosdate, zip_flags_t flags);
16
17 int
18 zip_file_set_mtime(zip_t *archive, zip_uint64_t index, time_t mtime,
19 zip_flags_t flags);
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22 The zip_file_set_mtime() function sets the last modification time (mtime)
23 for the file at position index in the zip archive to mtime. Currently,
24 no support for any flags is implemented.
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26 In the zip archive, the time and date are saved as two 16-bit integers.
27 To set the values directly, call the zip_file_set_dostime() function.
28 The values of the time bytes are defined as follows:
29
30 0-4 day of the month (1-31)
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32 5-8 month (January = 1, February = 2, ...)
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34 9-15 year offset from 1980 (1980 = 0, 1981 = 1, ...)
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36 The values of the date bytes are defined as follows:
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38 0-4 seconds divided by two (1-2 = 1, 3-4 = 2, ...)
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40 5-10 minute (0-59)
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42 11-15 hour (0-23)
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45 Upon successful completion 0 is returned. Otherwise, -1 is returned and
46 the error information in archive is set to indicate the error.
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49 zip_file_set_dostime() and zip_file_set_mtime() fail if:
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51 [ZIP_ER_INVAL] index is not a valid file index in archive.
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53 [ZIP_ER_MEMORY] Required memory could not be allocated.
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55 [ZIP_ER_RDONLY] The archive was opened in read-only mode.
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58 libzip(3), zip_stat(3)
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61 zip_file_set_mtime() was added in libzip 1.0. zip_file_set_dostime() was
62 added in libzip 1.6.
63
65 Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
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68 Following historical practice, the zip_file_set_mtime() function trans‐
69 lates the time from the zip archive into the local time zone. If you
70 want to avoid this, use the zip_file_set_dostime() function instead.
71
72BSD January 7, 2020 BSD