Fix SQLite regressions caused by 3b086af91

libc/calls/fcntl-nt.c

@@ -96,7 +96,7 @@ static textwindows bool OverlapsFileLock(struct FileLock *fl, int64_t off,
   EndA = off + (len - 1);
   BegB = fl->off;
   EndB = fl->off + (fl->len - 1);
-  return MAX(BegA, BegB) < MIN(EndA, EndB);
+  return MAX(BegA, BegB) <= MIN(EndA, EndB);
 }
 
 static textwindows bool EncompassesFileLock(struct FileLock *fl, int64_t off,

libc/calls/fstatat-nt.c

@@ -43,7 +43,9 @@ textwindows int sys_fstatat_nt(int dirfd, const char *path, struct stat *st,
   dwDesiredAccess = kNtFileGenericRead;
 TryAgain:
   if ((fh = CreateFile(
-           path16, dwDesiredAccess, 0, 0, kNtOpenExisting,
+           path16, dwDesiredAccess,
+           kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, 0,
+           kNtOpenExisting,
            kNtFileAttributeNormal | kNtFileFlagBackupSemantics |
                ((flags & AT_SYMLINK_NOFOLLOW) ? kNtFileFlagOpenReparsePoint
                                               : 0),

libc/calls/pipe-nt.c

@@ -25,6 +25,7 @@
 #include "libc/nt/enum/accessmask.h"
 #include "libc/nt/enum/creationdisposition.h"
 #include "libc/nt/enum/fileflagandattributes.h"
+#include "libc/nt/enum/filesharemode.h"
 #include "libc/nt/ipc.h"
 #include "libc/nt/runtime.h"
 #include "libc/sysv/consts/limits.h"
@@ -57,8 +58,11 @@ static textwindows int sys_pipe_nt_impl(int pipefd[2], unsigned flags) {
                         mode, 1, PIPE_BUF, PIPE_BUF, 0, &kNtIsInheritable);
   __fds_lock();
   if (hin != -1) {
-    if ((hout = CreateFile(pipename, kNtGenericWrite, 0, &kNtIsInheritable,
+    if ((hout = CreateFile(
-                           kNtOpenExisting, kNtFileFlagOverlapped, 0)) != -1) {
+             pipename, kNtGenericWrite,
+             kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete,
+             &kNtIsInheritable, kNtOpenExisting, kNtFileFlagOverlapped, 0)) !=
+        -1) {
       g_fds.p[reader].kind = kFdFile;
       g_fds.p[reader].flags = O_RDONLY | flags;
       g_fds.p[reader].mode = 0010444;

libc/calls/truncate-nt.c

@@ -32,8 +32,10 @@ textwindows int sys_truncate_nt(const char *path, uint64_t length) {
   uint16_t path16[PATH_MAX];
   if (__mkntpath(path, path16) == -1) return -1;
   BLOCK_SIGNALS;
-  if ((fh = CreateFile(path16, kNtGenericWrite, kNtFileShareRead, NULL,
+  if ((fh = CreateFile(
-                       kNtOpenExisting, kNtFileAttributeNormal, 0)) != -1) {
+           path16, kNtGenericWrite,
+           kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, NULL,
+           kNtOpenExisting, kNtFileAttributeNormal, 0)) != -1) {
     rc = sys_ftruncate_nt(fh, length);
     CloseHandle(fh);
   } else {

libc/intrin/kprintf.greg.c

@@ -1061,7 +1061,6 @@ privileged void kvprintf(const char *fmt, va_list v) {
 #pragma GCC diagnostic ignored "-Walloca-larger-than="
   long size = __get_safe_size(8000, 3000);
   if (size < 80) {
-    asm("int3");
     klog(STACK_ERROR, sizeof(STACK_ERROR) - 1);
     return;
   }

libc/sock/socketpair-nt.c

@@ -23,6 +23,7 @@
 #include "libc/nt/enum/accessmask.h"
 #include "libc/nt/enum/creationdisposition.h"
 #include "libc/nt/enum/fileflagandattributes.h"
+#include "libc/nt/enum/filesharemode.h"
 #include "libc/nt/ipc.h"
 #include "libc/nt/runtime.h"
 #include "libc/sock/internal.h"
@@ -73,7 +74,8 @@ textwindows int sys_socketpair_nt(int family, int type, int proto, int sv[2]) {
     return -1;
   }
 
-  h1 = CreateFile(pipename, kNtGenericWrite | kNtGenericRead, 0,
+  h1 = CreateFile(pipename, kNtGenericWrite | kNtGenericRead,
+                  kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete,
                   &kNtIsInheritable, kNtOpenExisting, kNtFileFlagOverlapped, 0);
 
   __fds_lock();

libc/stdio/dirstream.c

@@ -36,6 +36,7 @@
 #include "libc/nt/enum/accessmask.h"
 #include "libc/nt/enum/creationdisposition.h"
 #include "libc/nt/enum/fileflagandattributes.h"
+#include "libc/nt/enum/filesharemode.h"
 #include "libc/nt/enum/filetype.h"
 #include "libc/nt/files.h"
 #include "libc/nt/runtime.h"
@@ -229,10 +230,13 @@ TryAgain:
 
   // get inode such that it's consistent with stat()
   // it's important that we not follow symlinks here
-  int64_t fh = CreateFile(jp, kNtFileReadAttributes, 0, 0, kNtOpenExisting,
+  int64_t fh =
-                          kNtFileAttributeNormal | kNtFileFlagBackupSemantics |
+      CreateFile(jp, kNtFileReadAttributes,
-                              kNtFileFlagOpenReparsePoint,
+                 kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, 0,
-                          0);
+                 kNtOpenExisting,
+                 kNtFileAttributeNormal | kNtFileFlagBackupSemantics |
+                     kNtFileFlagOpenReparsePoint,
+                 0);
   if (fh != kNtInvalidHandleValue) {
     struct NtByHandleFileInformation wst;
     if (GetFileInformationByHandle(fh, &wst)) {