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worker: dup({0,1}) on serf start to prevent accidental use of stdin/stdout.

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Benjamin Summers 2019-09-13 18:08:25 -07:00 committed by Jared Tobin
parent 1a6e5ce9fa
commit 14a5507a93
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1 changed files with 8 additions and 2 deletions
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10
pkg/urbit/worker/main.c
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@ -883,6 +883,12 @@ u3_worker_boot(void)
c3_i
main(c3_i argc, c3_c* argv[])
{
// Close file descriptors 0 and 1 so that we don't use them by accident.
int inn_i = dup(0);
int out_i = dup(1);
close(0);
close(1);
uv_loop_t* lup_u = uv_default_loop();
c3_c* dir_c = argv[1];
c3_c* key_c = argv[2];
@ -939,11 +945,11 @@ main(c3_i argc, c3_c* argv[])
err_i = uv_pipe_init(lup_u, &u3V.inn_u.pyp_u, 0);
c3_assert(!err_i);
uv_pipe_open(&u3V.inn_u.pyp_u, 0);
uv_pipe_open(&u3V.inn_u.pyp_u, inn_i);
err_i = uv_pipe_init(lup_u, &u3V.out_u.pyp_u, 0);
c3_assert(!err_i);
uv_pipe_open(&u3V.out_u.pyp_u, 1);
uv_pipe_open(&u3V.out_u.pyp_u, out_i);
}
/* set up writing