[PATCH 1/1 v3] EmulatorPkg: fixes for NetBSD compilation

[tlaronde@polynum.com]

EmulatorPkg: fixes for NetBSD compilation.

Note: generated against today (2023-01-09) master.

v3:
- Macro __NetBSD__ used instead of lower level _NETBSD_SOURCE;
- The required fd value (-1) for mmap(3) under *BSD is given as is
  with a comment indicating why this particular value for MAP_ANON;
- Supplementary: mapFd0() is using mmap(3) also, with MAP_ANON, and the
  fd was not corrected as above in the previous versions of the patch.

>From 708079397bb35eb50cfb12f7d5f2c66b64177a76 Mon Sep 17 00:00:00 2001
From: Thierry LARONDE <tlaronde@polynum.com>
Date: Mon, 9 Jan 2023 17:49:59 +0100
Subject: [PATCH] EmulatorPkg: fixes for NetBSD compilation

Signed-off-by: Thierry LARONDE <tlaronde@polynum.com>
---
 EmulatorPkg/Unix/Host/BlockIo.c | 16 +++++++++++++++-
 EmulatorPkg/Unix/Host/Host.c    |  7 ++++---
 EmulatorPkg/Unix/Host/Host.h    |  7 ++++++-
 3 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/EmulatorPkg/Unix/Host/BlockIo.c b/EmulatorPkg/Unix/Host/BlockIo.c
index cf2d6b4cda..2eb062b03d 100644
--- a/EmulatorPkg/Unix/Host/BlockIo.c
+++ b/EmulatorPkg/Unix/Host/BlockIo.c
@@ -133,6 +133,20 @@ EmuBlockIoOpenDevice (
 
       ioctl (Private->fd, DKIOCGETMAXBLOCKCOUNTWRITE, &Private->Media->OptimalTransferLengthGranularity);
     }
+ #elif __NetBSD__
+    {
+      UINTN  BlockSize;
+      off_t  DiskSize;
+
+      if (ioctl (Private->fd,  DIOCGSECTORSIZE, &BlockSize) == 0) {
+        Private->Media->BlockSize = BlockSize;
+      }
+
+      if (ioctl (Private->fd, DIOCGMEDIASIZE, &DiskSize) == 0) {
+        Private->NumberOfBlocks   = DivU64x32 (DiskSize, (UINT32)BlockSize);
+        Private->Media->LastBlock = Private->NumberOfBlocks - 1;
+      }
+    }
  #else
     {
       size_t  BlockSize;
@@ -154,7 +168,7 @@ EmuBlockIoOpenDevice (
     Private->Media->LastBlock = Private->NumberOfBlocks - 1;
 
     if (fstatfs (Private->fd, &buf) == 0) {
- #if __APPLE__
+ #if __APPLE__ || __NetBSD__
       Private->Media->OptimalTransferLengthGranularity = buf.f_iosize/buf.f_bsize;
  #else
       Private->Media->OptimalTransferLengthGranularity = buf.f_bsize/buf.f_bsize;
diff --git a/EmulatorPkg/Unix/Host/Host.c b/EmulatorPkg/Unix/Host/Host.c
index 1f29dd00a3..6a338b81a1 100644
--- a/EmulatorPkg/Unix/Host/Host.c
+++ b/EmulatorPkg/Unix/Host/Host.c
@@ -199,7 +199,7 @@ main (
   //
   InitialStackMemorySize = STACK_SIZE;
   InitialStackMemory     = (UINTN)MapMemory (
-                                    0,
+                                    -1, // This value required by *BSD for MAP_ANON
                                     (UINT32)InitialStackMemorySize,
                                     PROT_READ | PROT_WRITE | PROT_EXEC,
                                     MAP_ANONYMOUS | MAP_PRIVATE
@@ -360,6 +360,7 @@ MapMemory (
   while ((!isAligned) && (base != 0)) {
     res = mmap ((void *)base, length, prot, flags, fd, 0);
     if (res == MAP_FAILED) {
+      perror("MapMemory");
       return NULL;
     }
 
@@ -511,7 +512,7 @@ MapFd0 (
               4096,
               PROT_READ | PROT_WRITE,
               MAP_PRIVATE | MAP_ANONYMOUS,
-              0,
+              -1, // This value required by *BSD for MAP_ANON
               0
               );
     if (res3 != EmuMagicPage) {
@@ -652,7 +653,7 @@ SecUnixPeiAutoScan (
 
   *MemoryBase = 0;
   res         = MapMemory (
-                  0,
+                  -1, // This value required by *BSD for MAP_ANON
                   gSystemMemory[Index].Size,
                   PROT_READ | PROT_WRITE | PROT_EXEC,
                   MAP_PRIVATE | MAP_ANONYMOUS
diff --git a/EmulatorPkg/Unix/Host/Host.h b/EmulatorPkg/Unix/Host/Host.h
index 0c81cdfc01..d6b70e8320 100644
--- a/EmulatorPkg/Unix/Host/Host.h
+++ b/EmulatorPkg/Unix/Host/Host.h
@@ -31,6 +31,8 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #if __CYGWIN__
   #include <sys/dirent.h>
+#elif __NetBSD__
+  #include <dirent.h>
 #else
   #include <sys/dir.h>
 #endif
@@ -55,7 +57,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <net/if.h>
 #include <ifaddrs.h>
 
-#ifdef __APPLE__
+#if defined(__APPLE__)
   #include <net/if_dl.h>
   #include <net/bpf.h>
   #include <sys/param.h>
@@ -65,6 +67,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
   #ifndef _Bool
 #define _Bool  char  // for clang debug
   #endif
+#elif defined(__NetBSD__)
+  #define statfs statvfs
+  #define fstatfs fstatvfs
 #else
   #include <termio.h>
   #include <sys/vfs.h>
-- 
2.39.0

-- 
        Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
                     http://www.kergis.com/
                    http://kertex.kergis.com/
Key fingerprint = 0FF7 E906 FBAF FE95 FD89  250D 52B1 AE95 6006 F40C