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This change progresses our AARCH64 support:

- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64

This change makes general improvements to Cosmo and Redbean:

- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO
This commit is contained in:
Justine Tunney 2023-06-03 08:12:13 -07:00
parent 5655c9a4e7
commit 8f522cb702
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GPG key ID: BE714B4575D6E328
116 changed files with 1194 additions and 1025 deletions
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23
test/libc/calls/unveil_test.c
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@ -51,16 +51,21 @@ char testlib_enable_tmp_setup_teardown;
struct stat st;
static bool SupportsLandlock(void) {
int e = errno;
bool r = landlock_create_ruleset(0, 0, LANDLOCK_CREATE_RULESET_VERSION) >= 0;
errno = e;
return r;
bool HasUnveilSupport(void) {
return unveil("", 0) >= 0;
}
bool UnveilCanSecureTruncate(void) {
int abi = unveil("", 0);
return abi == 0 || abi >= 3;
}
void SetUpOnce(void) {
__enable_threads();
if (!(IsLinux() && SupportsLandlock()) && !IsOpenbsd()) exit(0);
if (!HasUnveilSupport()) {
fprintf(stderr, "warning: unveil() not supported on this system: %m\n");
exit(0);
}
}
void SetUp(void) {
@ -68,10 +73,6 @@ void SetUp(void) {
ASSERT_SYS(0, 0, stat("/zip/life.elf", &st));
}
bool HasTruncateSupport(void) {
return IsOpenbsd() || landlock_create_ruleset(0, 0, LANDLOCK_CREATE_RULESET_VERSION) >= 3;
}
TEST(unveil, api_differences) {
SPAWN(fork);
ASSERT_SYS(0, 0, mkdir("foo", 0755));
@ -249,7 +250,7 @@ TEST(unveil, truncate_isForbiddenBySeccomp) {
ASSERT_SYS(0, 0, xbarf("garden/secret.txt", "hello", 5));
ASSERT_SYS(0, 0, unveil("jail", "rw"));
ASSERT_SYS(0, 0, unveil(0, 0));
ASSERT_SYS(!HasTruncateSupport() ? EPERM : EACCES_OR_ENOENT, -1,
ASSERT_SYS(!UnveilCanSecureTruncate() ? EPERM : EACCES_OR_ENOENT, -1,
truncate("garden/secret.txt", 0));
if (IsLinux()) {
ASSERT_SYS(0, 0, stat("garden/secret.txt", &st));