Small changes to Magenta sys files

photon/libc/include/stddef.h

@@ -20,11 +20,6 @@ typedef __intptr_t ptrdiff_t;
 typedef __uintptr_t size_t;
 #endif
 
-#ifndef __ssize_t_defined
-#define __ssize_t_defined
-typedef __intptr_t ssize_t;
-#endif
-
 #if defined(__cplusplus)
 }
 #endif /* defined(__cplusplus) */

photon/libc/sys/magenta/fio.c

@@ -1,6 +1,6 @@
+#include "sys/types.h"
 #include "__fio.h"
 #include "__syscall.h"
-#include "unistd.h"
 
 struct __io_file __stdin = {};
 struct __io_file __stdout = {};
@@ -38,7 +38,7 @@ unsigned int __fio_write(struct __io_file *f, const char *buf, unsigned int sz)
 unsigned int __fio_flush(struct __io_file *f)
 {
     ssize_t res = 0;//write(f->fd, f->buf, f->buf_idx);
-    if (res != f->buf_idx) {
+    if ((size_t)res != f->buf_idx) {
         f->err = 1;
     }
 

photon/libc/sys/magenta/sys/types.h

@@ -24,9 +24,15 @@ typedef unsigned int uid_t;
 typedef unsigned long useconds_t;
 typedef unsigned long long dev_t;
 
-#ifndef __SIZE_T_DEFINED
+#ifndef __size_t_DEFINED
 typedef __uintptr_t size_t;
-#define __SIZE_T_DEFINED
+#define __size_t_DEFINED
 #endif
 
+#ifndef __ssize_t_defined
+#define __ssize_t_defined
+typedef __intptr_t ssize_t;
+#endif
+
+
 #endif

photon/libc/sys/magenta/system.c

@@ -1,7 +1,5 @@
-#include "unistd.h"
-
 _Noreturn void __exit(int code)
 {
-    _exit(code);
+    /* TODO Exit syscall */
     while (1) {}
 }

scripts/create-sysroot.sh

@@ -16,12 +16,28 @@ platform_sys_headers=$(find $source_dir/photon/libc/sys/$platform/sys \
     -maxdepth 1 -type f \( -iname "*.h" ! -iname "__*" \))
 platform_sys_arch_headers=$(find $source_dir/photon/libc/sys/$platform/machine/$machine \
     -maxdepth 1 -type f \( -iname "*.h" ! -iname "__*" \))
+
+if [ ! -z "$platform_headers" ]; then
     cp -t $build_dir/sysroot/usr/include $platform_headers
+fi
+
+if [ ! -z "$platform_sys_headers" ]; then
     cp -t $build_dir/sysroot/usr/include/sys $platform_sys_headers
+fi
+
+if [ ! -z "$platform_sys_arch_headers" ]; then
     cp -t $build_dir/sysroot/usr/include/sys $platform_sys_arch_headers
+fi
 
 machine_arch_headers=$(find $source_dir/photon/libc/machine/$machine/ \
                     -type f \( -iname "*.h" ! -iname "__*" \))
 machine_generic_headers=$(find $source_dir/photon/libc/include/machine/ \
                     -type f \( -iname "*.h" ! -iname "__*" \))
-cp -t $build_dir/sysroot/usr/include/machine $machine_generic_headers $machine_arch_headers
+
+if [ ! -z "$machine_generic_headers" ]; then
+    cp -t $build_dir/sysroot/usr/include/machine $machine_generic_headers
+fi
+
+if [ ! -z "$machine_arch_headers" ]; then
+    cp -t $build_dir/sysroot/usr/include/machine $machine_arch_headers
+fi