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Ignore SIGSYS on BSD by default

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Justine Tunney 2022-11-03 09:32:12 -07:00
parent 179e048bba
commit 37d40e087f
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GPG key ID: BE714B4575D6E328
7 changed files with 48 additions and 16 deletions
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17
libc/stdio/getrandom.c
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@ -127,25 +127,14 @@ ssize_t getrandom(void *p, size_t n, unsigned f) {
return rc;
}
static textstartup void getrandom_init(void) {
__attribute__((__constructor__)) static textstartup void getrandom_init(void) {
int e, rc;
struct sigaction sa, oldsa;
if (IsWindows()) return;
e = errno;
if (IsBsd()) {
sa.sa_flags = 0;
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sigaction(SIGSYS, &sa, &oldsa);
}
if (!(rc = sys_getrandom(0, 0, 0))) {
have_getrandom = true;
} else {
errno = e;
}
STRACE("sys_getrandom(0,0,0) → %d% m", rc);
if (IsBsd()) {
sigaction(SIGSYS, &oldsa, 0);
}
errno = e;
}
const void *const g_getrandom_init[] initarray = {getrandom_init};