发现编译安装没什么问题
但是转化.PASSWDS好像不正确
原来的用户无法登录
有些郁闷

老的struct.h如下
struct userec {                
    char userid[IDLEN + 2];    
    char flags[2];
    time_t firstlogin;
    char lasthost[16];
    unsigned int numlogins;
    unsigned int numposts;
#ifdef CONV_PASS
    char passwd[OLDPASSLEN];
    char unused_padding[2];
#endif
    char username[NAMELEN];
    unsigned int club_read_rights[MAXCLUB >> 5];
    unsigned int club_write_rights[MAXCLUB >> 5];
    unsigned char md5passwd[MD5PASSLEN];
    unsigned userlevel;
    time_t lastlogin;
    time_t stay;
    int signature;
    unsigned int userdefine;
    time_t notedate;
    int noteline;
    int notemode;
    time_t exittime;
#ifdef HAVE_BIRTHDAY
    char gender;
    unsigned char birthyear;
    unsigned char birthmonth;
    unsigned char birthday;
#endif
    unsigned int usedspace;     /* used space of user's mailbox, in bytes */
};

cnv_passwd_define2.c的struct userec1里面没有最后关于生日定义的这几行
main里面的转化部分如下
    while (fread(&bh, sizeof(struct userec1), 1, fp)) {
        memset(&bhnew, 0, sizeof(struct userec2));
        memcpy(&bhnew, &bh, sizeof(struct userec1));
        bhnew.flags = bh.flags[0];
        bhnew.title = 0;
        bhnew.userdefine[1] = -1;
        bhnew.notedate = bh.notedate;
        bhnew.noteline = bh.noteline;
        bhnew.notemode = bh.notemode;
        bhnew.exittime = bh.exittime;
        bhnew.usedspace = bh.usedspace;
        fwrite(&bhnew, sizeof(struct userec2), 1, fp2);
        printf("ok \n");
    }

运行后发现.PASSWDS跟.PASSWDS.OLD相比，在第一组FF FF FF FF后面又增加了四个字节
的FF，大概是userdefine增加的吧，我不是很清楚。
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