[core:os] add device to File_Info

core/os/dir_windows.odin

@@ -42,6 +42,7 @@ find_data_to_file_info :: proc(base_path: string, d: ^win32.WIN32_FIND_DATAW, al
 		#assert(size_of(fi.inode) == size_of(file_id_info.FileId))
 		#assert(size_of(fi.inode) == 16)
 		runtime.mem_copy_non_overlapping(&fi.inode, &file_id_info.FileId, 16)
+		fi.device = file_id_info.VolumeSerialNumber
 	}
 
 	return

core/os/stat.odin

@@ -14,6 +14,7 @@ File_Info :: struct {
 	name:              string,        // base name of the file
 
 	inode:             u128,          // might be zero if cannot be determined
+	device:            u64,           // might be zero if cannot be determined
 	size:              i64 `fmt:"M"`, // length in bytes for regular files; system-dependent for other file types
 	mode:              Permissions,   // file permission flags
 	type:              File_Type,

core/os/stat_linux.odin

@@ -32,6 +32,7 @@ _fstat_internal :: proc(fd: linux.Fd, allocator: runtime.Allocator) -> (fi: File
 		fullpath          = _get_full_path(fd, allocator) or_return,
 		name              = "",
 		inode             = u128(u64(s.ino)),
+		device            = u64(linux.makedev(s.dev_major, s.dev_minor)),
 		size              = i64(s.size),
 		mode              = mode,
 		type              = type,

core/os/stat_posix.odin

@@ -12,6 +12,7 @@ internal_stat :: proc(stat: posix.stat_t, fullpath: string) -> (fi: File_Info) {
 	_, fi.name = split_path(fi.fullpath)
 
 	fi.inode = u128(stat.st_ino)
+	fi.device = u64(stat.st_dev)
 	fi.size = i64(stat.st_size)
 
 	fi.mode = transmute(Permissions)u32(transmute(posix._mode_t)(stat.st_mode - posix.S_IFMT))

core/os/stat_wasi.odin

@@ -10,8 +10,9 @@ internal_stat :: proc(stat: wasi.filestat_t, fullpath: string) -> (fi: File_Info
 	fi.fullpath = fullpath
 	_, fi.name = split_path(fi.fullpath)
 
-	fi.inode = u128(stat.ino)
-	fi.size  = i64(stat.size)
+	fi.inode  = u128(stat.ino)
+	fi.device = u64(stat.dev)
+	fi.size   = i64(stat.size)
 
 	switch stat.filetype {
 	case .BLOCK_DEVICE:                 fi.type = .Block_Device

core/os/stat_windows.odin

@@ -298,6 +298,7 @@ _file_info_from_get_file_information_by_handle :: proc(path: string, h: win32.HA
 	fi.fullpath = path
 	fi.name = basename(path)
 	fi.inode = u128(u64(d.nFileIndexHigh)<<32 + u64(d.nFileIndexLow))
+	fi.device = u64(d.dwVolumeSerialNumber)
 	fi.size  = i64(d.nFileSizeHigh)<<32  + i64(d.nFileSizeLow)
 	type, mode := _file_type_mode_from_file_attributes(d.dwFileAttributes, h, 0)
 	fi.type = type

core/sys/linux/wrappers.odin

@@ -146,3 +146,11 @@ perf_cache_config :: #force_inline proc "contextless" (id: Perf_Hardware_Cache_I
 	res: Perf_Hardware_Cache_Result_Id) -> u64 {
 	return u64(id) | (u64(op) << 8) | (u64(res) << 16)
 }
+
+/// Constructs a Dev from major and minor device numbers
+makedev :: #force_inline proc "contextless" (major, minor: u32) -> Dev {
+	return Dev((u64(minor & 0xff)) |
+	           (u64(major & 0xfff) << 8) |
+	           (u64(minor & ~u32(0xff)) << 12) |
+	           (u64(major & ~u32(0xfff)) << 32))
+}