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#include "all.h"
#define SIZE 1024
int chatty;
int conftime;
#define NSIZE 128
static char nbuf[NSIZE];
static int chatpid;
static void
killchat(void)
{
char buf[NSIZE];
int fd;
remove(nbuf);
snprint(buf, sizeof buf, "/proc/%d/note", chatpid);
fd = open(buf, OWRITE);
write(fd, "kill\n", 5);
close(fd);
}
void
chatsrv(char *name)
{
int n, sfd, pfd[2];
char *p, buf[256];
if(name && *name)
snprint(nbuf, sizeof nbuf, "/srv/%s", name);
else{
if(p = strrchr(argv0, '/')) /* assign = */
name = p+1;
else
name = argv0;
snprint(nbuf, sizeof nbuf, "/srv/%s.chat", name);
}
remove(nbuf);
if(pipe(pfd) < 0)
panic("chatsrv pipe");
sfd = create(nbuf, OWRITE, 0600);
if(sfd < 0)
panic("chatsrv create %s", nbuf);
chatpid = rfork(RFPROC|RFMEM);
switch(chatpid){
case -1:
panic("chatsrv fork");
case 0:
break;
default:
atexit(killchat);
return;
}
fprint(sfd, "%d", pfd[1]);
close(sfd);
close(pfd[1]);
for(;;){
n = read(pfd[0], buf, sizeof(buf)-1);
if(n < 0)
break;
if(n == 0)
continue;
buf[n] = 0;
if(buf[0] == 'c')
conftime = 999;
chatty = strtol(buf, 0, 0);
if(abs(chatty) < 2)
rpcdebug = 0;
else
rpcdebug = abs(chatty) - 1;
fprint(2, "%s: chatty=%d, rpcdebug=%d, conftime=%d\n",
nbuf, chatty, rpcdebug, conftime);
}
_exits(0);
}
void
chat(char *fmt, ...)
{
char buf[SIZE];
va_list arg;
Fmt f;
if(!chatty)
return;
fmtfdinit(&f, 2, buf, sizeof buf);
va_start(arg, fmt);
fmtvprint(&f, fmt, arg);
va_end(arg);
fmtfdflush(&f);
}
void
clog(char *fmt, ...)
{
char buf[SIZE];
va_list arg;
int n;
va_start(arg, fmt);
vseprint(buf, buf+SIZE, fmt, arg);
va_end(arg);
n = strlen(buf);
if(chatty || rpcdebug)
write(2, buf, n);
if(chatty <= 0){
if(n>0 && buf[n-1] == '\n')
buf[n-1] = 0;
syslog(0, "nfs", buf);
}
}
void
panic(char *fmt, ...)
{
char buf[SIZE];
va_list arg;
va_start(arg, fmt);
vseprint(buf, buf+SIZE, fmt, arg);
va_end(arg);
if(chatty || rpcdebug)
fprint(2, "%s %d: %s: %r\n", argv0, getpid(), buf);
if(chatty <= 0)
syslog(0, "nfs", buf);
exits("panic");
}
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