zip_file_set_dostime, zip_file_set_mtime — set last modification time (mtime) for file in zip

       Dieter Baron <dillo@nih.at> and Thomas Klausner <wiz@gatalith.at>

       Following historical practice, the zip_file_set_mtime() function translates the time from the zip archive
       into the local time zone.  If you want to avoid this, use the zip_file_set_dostime() function instead.

Debian                                            June 18, 2022                            ZIP_FILE_SET_MTIME(3)

       The zip_file_set_mtime() function sets the last modification time (mtime) for the file at position  index
       in the zip archive to mtime.  Currently, no support for any flags is implemented.

       In the zip archive, the time and date are saved as two 16-bit integers.  To set the values directly, call
       the zip_file_set_dostime() function.  The values of the time bytes are defined as follows:

             0-4    seconds divided by two (1-2 = 1, 3-4 = 2, ...)

             5-10   minute (0-59)

             11-15  hour (0-23)

       The values of the date bytes are defined as follows:

             0-4    day of the month (1-31)

             5-8    month (January = 1, February = 2, ...)

             9-15   year offset from 1980 (1980 = 0, 1981 = 1, ...)

zip_file_set_dostime() and zip_file_set_mtime() fail if:

       [ZIP_ER_INVAL]     index is not a valid file index in archive.

       [ZIP_ER_MEMORY]    Required memory could not be allocated.

       [ZIP_ER_OPNOTSUPP]
                          Traditional  PKWare  encryption  uses the file's mtime, therefore it cannot be changed
                          without re-encrypting the data.

       [ZIP_ER_RDONLY]    The archive was opened in read-only mode.

zip_file_set_mtime() was added in libzip 1.0.  zip_file_set_dostime() was added in libzip 1.6.

       libzip (-lzip)

       zip_file_set_dostime, zip_file_set_mtime — set last modification time (mtime) for file in zip

       Upon successful completion 0 is returned.  Otherwise, -1 is returned and the error information in archive
       is set to indicate the error.

libzip(3), zip_stat(3)

#include<zip.h>intzip_file_set_dostime(zip_t*archive,  zip_uint64_tindex,  zip_uint16_tdostime, zip_uint16_tdosdate,
           zip_flags_tflags);

       intzip_file_set_mtime(zip_t*archive, zip_uint64_tindex, time_tmtime, zip_flags_tflags);