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supervisor exits if no seccomp_notify support #48

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supervisor exits if no seccomp_notify support #48

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5c77a27
supervisor exits if no seccomp_notify support
ngc92 May 8, 2026
27587b6
undo mprotect on exception so shutdown works
ngc92 May 9, 2026
30ae432
fix install_notify
ngc92 May 9, 2026
1b20aca
bump nanobind version
ngc92 May 9, 2026
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11 changes: 10 additions & 1 deletion csrc/supervisor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@
#define dbgprint(...)
#endif

extern bool supports_seccomp_notify();

struct Config {
uintptr_t sensitive_lo;
uintptr_t sensitive_hi;
Expand Down Expand Up @@ -161,7 +163,14 @@ int supervisor_main(int sock_fd) {
if (prctl(PR_SET_DUMPABLE, 0) < 0)
throw std::system_error(errno, std::system_category(), "prctl(PR_SET_DUMPABLE)");

prctl(PR_SET_PDEATHSIG, SIGTERM);
if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
fprintf(stderr, "supervisor: PR_SET_PDEATHSIG failed: %s\n", strerror(errno));

if (!supports_seccomp_notify()) {
close(sock_fd);
return 0; // expected, silent
}
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Config cfg;
int unotify_fd = recv_setup(sock_fd, cfg);
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