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#include <u.h>
#include <libc.h>
int eflag;
int nopts;
char *opts[16];
void
xfer(int from, int to)
{
char buf[8192];
int n;
while((n = read(from, buf, sizeof buf)) > 0)
if(write(to, buf, n) < 0)
break;
}
void
usage(void)
{
fprint(2, "usage: %s [-e] [-o msg]... addr [cmd [args]...]\n", argv0);
exits("usage");
}
void
main(int argc, char *argv[])
{
int i, fd, cfd, pid;
ARGBEGIN {
case 'e':
eflag = 1;
break;
case 'o':
if(nopts >= nelem(opts)){
fprint(2, "%s: too many -o options\n", argv0);
exits("opts");
}
opts[nopts++] = EARGF(usage());
break;
default:
usage();
} ARGEND;
if(--argc < 0)
usage();
fd = dial(*argv++, nil, nil, &cfd);
if(fd < 0){
fprint(2, "%s: dial: %r\n", argv0);
exits("dial");
}
for(i = 0; i < nopts; i++)
write(cfd, opts[i], strlen(opts[i]));
close(cfd);
if(argc > 0){
dup(fd, 0);
dup(fd, 1);
/* dup(fd, 2); keep stderr */
if(fd > 2) close(fd);
exec(argv[0], argv);
if(argv[0][0] != '/')
exec(smprint("/bin/%s", argv[0]), argv);
fprint(2, "%s: exec: %r\n", argv0);
exits("exec");
}
pid = fork();
switch(pid){
case -1:
fprint(2, "%s: fork: %r", argv0);
exits("fork");
case 0:
xfer(0, fd);
if(eflag) exits(nil);
pid = getppid();
break;
default:
xfer(fd, 1);
break;
}
postnote(PNPROC, pid, "kill");
waitpid();
exits(nil);
}
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