diff options
| -rw-r--r-- | mbbsd/talk.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/mbbsd/talk.c b/mbbsd/talk.c index 7aee54f2..df570f38 100644 --- a/mbbsd/talk.c +++ b/mbbsd/talk.c @@ -654,15 +654,17 @@ my_write(pid_t pid, char *prompt, char *id, int flag, userinfo_t * puin) !(fri_stat & HFM)))) outmsg("\033[1;33;41m糟糕! 對方防水了! \033[37m~>_<~\033[m"); else { - if (uin->msgcount < MAX_MSGS) { + int write_pos = uin->msgcount; /* try to avoid race */ + if ( write_pos < (MAX_MSGS - 1) ) { /* race here */ unsigned char pager0 = uin->pager; + uin->msgcount = write_pos + 1; uin->pager = 2; - uin->msgs[uin->msgcount].pid = currpid; - strlcpy(uin->msgs[uin->msgcount].userid, cuser.userid, - sizeof(uin->msgs[uin->msgcount].userid)); - strlcpy(uin->msgs[uin->msgcount++].last_call_in, msg, - sizeof(uin->msgs[uin->msgcount].last_call_in)); + uin->msgs[write_pos].pid = currpid; + strlcpy(uin->msgs[write_pos].userid, cuser.userid, + sizeof(uin->msgs[write_pos].userid)); + strlcpy(uin->msgs[write_pos].last_call_in, msg, + sizeof(uin->msgs[write_pos].last_call_in)); uin->pager = pager0; } else if (flag != 2) outmsg("\033[1;33;41m糟糕! 對方不行了! (收到太多水球) \033[37m@_@\033[m"); |