Use 64-bit fields for fsblkcnt_t and fsfilcnt_t. NFC

We were running into issues where some of our bots were reporting
numbers larger than 2^32 when calling statfs on the underlying
filesystem.

Author: sbc100

src/lib/libsyscall.js

@@ -66,11 +66,11 @@ var SyscallsLibrary = {
     writeStatFs(buf, stats) {
       {{{ makeSetValue('buf', C_STRUCTS.statfs.f_bsize, 'stats.bsize', 'i32') }}};
       {{{ makeSetValue('buf', C_STRUCTS.statfs.f_frsize, 'stats.bsize', 'i32') }}};
-      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_blocks, 'stats.blocks', 'i32') }}};
-      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_bfree, 'stats.bfree', 'i32') }}};
-      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_bavail, 'stats.bavail', 'i32') }}};
-      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_files, 'stats.files', 'i32') }}};
-      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_ffree, 'stats.ffree', 'i32') }}};
+      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_blocks, 'stats.blocks', 'i64') }}};
+      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_bfree, 'stats.bfree', 'i64') }}};
+      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_bavail, 'stats.bavail', 'i64') }}};
+      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_files, 'stats.files', 'i64') }}};
+      {{{ makeSetValue('buf', C_STRUCTS.statfs.f_ffree, 'stats.ffree', 'i64') }}};
       {{{ makeSetValue('buf', C_STRUCTS.statfs.f_fsid, 'stats.fsid', 'i32') }}};
       {{{ makeSetValue('buf', C_STRUCTS.statfs.f_flags, 'stats.flags', 'i32') }}};  // ST_NOSUID
       {{{ makeSetValue('buf', C_STRUCTS.statfs.f_namelen, 'stats.namelen', 'i32') }}};

src/struct_info_generated.json

@@ -1699,17 +1699,17 @@
             "st_uid": 12
         },
         "statfs": {
-            "__size__": 64,
-            "f_bavail": 16,
-            "f_bfree": 12,
+            "__size__": 88,
+            "f_bavail": 24,
+            "f_bfree": 16,
             "f_blocks": 8,
             "f_bsize": 4,
-            "f_ffree": 24,
-            "f_files": 20,
-            "f_flags": 44,
-            "f_frsize": 40,
-            "f_fsid": 28,
-            "f_namelen": 36
+            "f_ffree": 40,
+            "f_files": 32,
+            "f_flags": 64,
+            "f_frsize": 60,
+            "f_fsid": 48,
+            "f_namelen": 56
         },
         "termios": {
             "__c_ispeed": 52,

src/struct_info_generated_wasm64.json

@@ -1699,17 +1699,17 @@
             "st_uid": 16
         },
         "statfs": {
-            "__size__": 104,
-            "f_bavail": 24,
-            "f_bfree": 20,
+            "__size__": 120,
+            "f_bavail": 32,
+            "f_bfree": 24,
             "f_blocks": 16,
             "f_bsize": 8,
-            "f_ffree": 32,
-            "f_files": 28,
-            "f_flags": 64,
-            "f_frsize": 56,
-            "f_fsid": 36,
-            "f_namelen": 48
+            "f_ffree": 48,
+            "f_files": 40,
+            "f_flags": 80,
+            "f_frsize": 72,
+            "f_fsid": 56,
+            "f_namelen": 64
         },
         "termios": {
             "__c_ispeed": 52,

system/lib/libc/musl/arch/emscripten/bits/alltypes.h

@@ -265,12 +265,12 @@ typedef int blkcnt_t;
 #endif
 
 #if defined(__NEED_fsblkcnt_t) && !defined(__DEFINED_fsblkcnt_t)
-typedef unsigned int fsblkcnt_t;
+typedef unsigned _Int64 fsblkcnt_t;
 #define __DEFINED_fsblkcnt_t
 #endif
 
 #if defined(__NEED_fsfilcnt_t) && !defined(__DEFINED_fsfilcnt_t)
-typedef unsigned int fsfilcnt_t;
+typedef unsigned _Int64 fsfilcnt_t;
 #define __DEFINED_fsfilcnt_t
 #endif