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Improve cancellations, randomness, and time

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- Exhaustively document cancellation points
- Rename SIGCANCEL to SIGTHR just like BSDs
- Further improve POSIX thread cancellations
- Ensure asynchronous cancellations work correctly
- Elevate the quality of getrandom() and getentropy()
- Make futexes cancel correctly on OpenBSD 6.x and 7.x
- Add reboot.com and shutdown.com to examples directory
- Remove underscore prefix from awesome timespec_*() APIs
- Create assertions that help verify our cancellation points
- Remove bad timespec APIs (cmp generalizes eq/ne/gt/gte/lt/lte)
This commit is contained in:
Justine Tunney 2022-11-05 19:49:41 -07:00
parent 0d7c265392
commit 3f0bcdc3ef
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GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions
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5
libc/sock/accept4.c
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@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/cp.internal.h"
#include "libc/calls/internal.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
@ -44,6 +45,8 @@ int accept4(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize,
int flags) {
int rc;
char addrbuf[72];
BEGIN_CANCELLATION_POINT;
if (!out_addr || !inout_addrsize ||
(IsAsan() && !__asan_is_valid(out_addr, *inout_addrsize))) {
rc = efault();
@ -54,6 +57,8 @@ int accept4(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize,
} else {
rc = ebadf();
}
END_CANCELLATION_POINT;
STRACE("accept4(%d, [%s]) -> %d% lm", fd,
DescribeSockaddr(out_addr, inout_addrsize ? *inout_addrsize : 0), rc);
return rc;