Handle the empty file inode on macOS and FAT32 (with the proper define)

Josh Peterson · UnityAlex · commit ecf969804ac7 · 2021-03-17T12:09:36.000-04:00
Previously, 5174f7e was an attempt to correct this issue. However, the `#define` scheme for Mono changed since then, so `PLATFORM_MACOSX` became `HOST_DARWIN`. This change uses the proper define to correct Unity case 1166108.
diff --git a/mono/metadata/w32file-unix.c b/mono/metadata/w32file-unix.c
@@ -1839,7 +1839,7 @@ static mode_t convert_perms(guint32 sharemode)
 
 static gboolean already_shared(gboolean file_alread_shared, ino_t inode)
 {
-#if PLATFORM_MACOSX
+#if HOST_DARWIN
 	/* On macOS and FAT32 partitions, we will sometimes get this inode value
 	 * for more than one file. It means the file is empty (FILENO_EMPTY is
 	 * defined in an internal header).  When this happens, the hash table of

Original file line number	Diff line number	Diff line change
`@@ -1839,7 +1839,7 @@ static mode_t convert_perms(guint32 sharemode)`
`1839`	`1839`
`1840`	`1840`	`static gboolean already_shared(gboolean file_alread_shared, ino_t inode)`
`1841`	`1841`	`{`
`1842`		`-#if PLATFORM_MACOSX`
	`1842`	`+#if HOST_DARWIN`
`1843`	`1843`	`/* On macOS and FAT32 partitions, we will sometimes get this inode value`
`1844`	`1844`	`* for more than one file. It means the file is empty (FILENO_EMPTY is`
`1845`	`1845`	`* defined in an internal header). When this happens, the hash table of`