NAME

       zip_set_file_extra - set extra field for file in zip

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       int  zip_set_file_extra(struct zip *archive, zip_uint64_t index); "const char *extra" "int
       len"

DESCRIPTION

       The zip_set_file_extra function sets the extra field for the file at position index in the
       zip  archive  to extra of length len.  If extra is NULL and len is 0, the file extra field
       will be removed.

RETURN VALUES

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

ERRORS

       zip_set_file_extra fails if:

              [ZIP_ER_INVAL]
                  index  is  not  a  valid file index in archive, or len is less than 0 or longer
                  than the maximum extra field length in a zip file (65535).

              [ZIP_ER_MEMORY]
                  Required memory could not be allocated.

SEE ALSO

       libzip(3), zip_get_file_extra(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>