FSSH_S_IWUSR
#define S_IWUSR FSSH_S_IWUSR
#define FSSH_DEFFILEMODE (FSSH_S_IRUSR | FSSH_S_IWUSR | FSSH_S_IRGRP \
permissions += ((mode & FSSH_S_IWUSR) ? 'w' : '-');
SET_ST_MODE_BIT(FSSH_S_IWUSR, S_IWUSR);
SET_ST_MODE_BIT(FSSH_S_IWUSR, S_IWUSR);