Adding FreeBSD support

[Philipp]

Please consider applying the following patch to code/zpl.h in order to add support for FreeBSD 12. Might be necessary to polish it a little beforehand, as I am not a C expert.

--- zpl.h	2019-11-01 05:35:57.095504000 +0100
+++ zpl_new.h	2019-11-01 05:50:39.201436000 +0100
@@ -520,10 +520,16 @@
 #include <stdlib.h> // NOTE: malloc on linux
 #include <sys/mman.h>
 
-#if !defined(ZPL_SYSTEM_OSX)
+#if !defined(ZPL_SYSTEM_OSX) && !defined(ZPL_SYSTEM_FREEBSD)
     #include <sys/sendfile.h>
 #endif
 
+#if defined(ZPL_SYSTEM_FREEBSD)
+    #include <sys/types.h>
+    #include <sys/socket.h>
+    #include <sys/uio.h>
+#endif
+
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/time.h>
@@ -767,6 +773,11 @@
     #endif
 #endif
 
+#if defined(ZPL_SYSTEM_FREEBSD)
+    #define ZPL_EXTERN extern
+    #define zpl_inline inline
+#endif
+
 #if !defined(zpl_no_inline)
     #if defined(_MSC_VER)
         #define zpl_no_inline __declspec(noinline)
@@ -1557,7 +1568,7 @@
     zpl_isize threads_per_core;
 } zpl_affinity;
 
-#elif defined(ZPL_SYSTEM_LINUX) || defined(ZPL_SYSTEM_EMSCRIPTEN)
+#elif defined(ZPL_SYSTEM_LINUX) || defined(ZPL_SYSTEM_FREEBSD) || defined(ZPL_SYSTEM_EMSCRIPTEN)
 
 typedef struct zpl_affinity {
     zpl_b32   is_accurate;
@@ -6967,7 +6978,7 @@
 
 #else
 
-#if defined(ZPL_SYSTEM_LINUX)
+#if defined(ZPL_SYSTEM_LINUX) || defined(ZPL_SYSTEM_FREEBSD)
 zpl_inline zpl_f64 zpl__unix_getime(void) {
     struct timespec t;
     zpl_f64 result;
@@ -8152,7 +8163,7 @@
     return a->threads_per_core;
 }
 
-#elif defined(ZPL_SYSTEM_LINUX)
+#elif defined(ZPL_SYSTEM_LINUX) || defined(ZPL_SYSTEM_FREEBSD)
 // IMPORTANT TODO: This zpl_affinity stuff for linux needs be improved a lot!
 // NOTE(zangent): I have to read /proc/cpuinfo to get the number of threads per core.
 
@@ -10816,7 +10827,11 @@
     struct stat stat_existing;
     fstat(existing_fd, &stat_existing);
 
+#if defined(ZPL_SYSTEM_FREEBSD)
+    size = sendfile(new_fd, existing_fd, 0, stat_existing.st_size, NULL, 0, 0);
+#else
     size = sendfile(new_fd, existing_fd, 0, stat_existing.st_size);
+#endif
 
     close(new_fd);
     close(existing_fd);

[Dominik Madarász]

Thank you for the patch, I will look into it.

[Dominik Madarász]

Updated in a312bc0, let me know if there are any issues left.

[Philipp]

Thank you, works.