Make fixes and improvements

- Invent iso8601us() for faster timestamps
- Improve --strace descriptions of sigset_t
- Rebuild the Landlock Make bootstrap binary
- Introduce MODE=sysv for non-Windows builds
- Permit OFD fcntl() locks under pledge(flock)
- redbean can now protect your kernel from ddos
- Have vfork() fallback to sys_fork() not fork()
- Change kmalloc() to not die when out of memory
- Improve documentation for some termios functions
- Rewrite putenv() and friends to conform to POSIX
- Fix linenoise + strace verbosity issue on Windows
- Fix regressions in our ability to show backtraces
- Change redbean SetHeader() to no-op if value is nil
- Improve fcntl() so SQLite locks work in non-WAL mode
- Remove some unnecessary work during fork() on Windows
- Create redbean-based SSL reverse proxy for IPv4 TurfWar
- Fix ape/apeinstall.sh warning when using non-bash shells
- Add ProgramTrustedIp(), and IsTrustedIp() APIs to redbean
- Support $PWD, $UID, $GID, and $EUID in command interpreter
- Introduce experimental JTqFpD APE prefix for non-Windows builds
- Invent blackhole daemon for firewalling IP addresses via UNIX named socket
- Add ProgramTokenBucket(), AcquireToken(), and CountTokens() APIs to redbean

libc/intrin/sigfillset.c

@@ -18,6 +18,7 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/struct/sigset.h"
 #include "libc/str/str.h"
+#include "libc/sysv/consts/limits.h"
 #include "libc/sysv/consts/sig.h"
 
 /**
@@ -29,7 +30,17 @@
  */
 int sigfillset(sigset_t *set) {
   memset(set->__bits, -1, sizeof(set->__bits));
-  sigdelset(set, SIGKILL);
-  sigdelset(set, SIGSTOP);
+#define M(x) set->__bits[(x - 1) >> 6] &= ~(1ull << ((x - 1) & 63));
+#include "libc/intrin/sigisprecious.inc"
+  switch (_NSIG) {
+    case 32:
+      set->__bits[0] &= 0xffffffff;
+      break;
+    case 64:
+      set->__bits[1] = 0;
+      break;
+    default:
+      break;
+  }
   return 0;
 }