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/log/backtrace2.c

@@ -125,7 +125,7 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
   if (sys_pipe2(pipefds, O_CLOEXEC) == -1) {
     return -1;
   }
-  if ((pid = fork()) == -1) {
+  if ((pid = __sys_fork().ax) == -1) {
     sys_close(pipefds[0]);
     sys_close(pipefds[1]);
     return -1;
@@ -149,19 +149,12 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
     }
     p1 = buf;
     p3 = p1 + got;
-    /*
-     * remove racist output from gnu tooling, that can't be disabled
-     * otherwise, since it breaks other tools like emacs that aren't
-     * equipped to ignore it, and what's most problematic is that
-     * addr2line somehow manages to put the racism onto the one line
-     * in the backtrace we actually care about.
-     */
     for (got = p3 - buf, p1 = buf; got;) {
       if ((p2 = memmem(p1, got, " (discriminator ",
                        strlen(" (discriminator ") - 1)) &&
           (p3 = memchr(p2, '\n', got - (p2 - p1)))) {
         if (p3 > p2 && p3[-1] == '\r') --p3;
-        write(2, p1, p2 - p1);
+        sys_write(2, p1, p2 - p1);
         got -= p3 - p1;
         p1 += p3 - p1;
       } else {
@@ -183,11 +176,13 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
 }
 
 static int PrintBacktrace(int fd, const struct StackFrame *bp) {
+#if !defined(DWARFLESS)
   if (!IsTiny() && !__isworker) {
     if (PrintBacktraceUsingAddr2line(fd, bp) != -1) {
       return 0;
     }
   }
+#endif
   return PrintBacktraceUsingSymbols(fd, bp, GetSymbolTable());
 }