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Add some tests for execve()

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Justine Tunney 2022-10-02 14:58:14 -07:00
parent 2526a9b8c7
commit daca5499b9
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GPG key ID: BE714B4575D6E328
6 changed files with 81 additions and 14 deletions
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12
libc/stdio/getrandom.c
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@ -56,9 +56,9 @@ static bool have_getrandom;
*
* The following flags may be specified:
*
* - GRND_RANDOM: Halt the entire system while I tap an entropy pool
* - `GRND_RANDOM`: Halt the entire system while I tap an entropy pool
* so small that it's hard to use statistics to test if it's random
* - GRND_NONBLOCK: Do not wait for i/o events or me to jiggle my
* - `GRND_NONBLOCK`: Do not wait for i/o events or me to jiggle my
* mouse, and instead return immediately the moment data isn't
* available, even if the result needs to be -1 w/ EAGAIN
*
@ -68,6 +68,8 @@ static bool have_getrandom;
* @note this function could block a nontrivial time on old computers
* @note this function is indeed intended for cryptography
* @note this function takes around 900 cycles
* @raise EINVAL if `f` is invalid
* @raise ENOSYS on bare metal
* @asyncsignalsafe
* @restartable
* @vforksafe
@ -81,8 +83,10 @@ ssize_t getrandom(void *p, size_t n, unsigned f) {
const char *via;
sigset_t neu, old;
if (n > 256) n = 256;
if ((f & ~(GRND_RANDOM | GRND_NONBLOCK))) return einval();
if (IsWindows()) {
if ((f & ~(GRND_RANDOM | GRND_NONBLOCK))) {
rc = einval();
via = "n/a";
} else if (IsWindows()) {
via = "RtlGenRandom";
if (RtlGenRandom(p, n)) {
rc = n;