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Imbus 2024-06-24 20:47:54 +02:00
parent d3f278fc59
commit 98d876b18c
1 changed files with 10 additions and 10 deletions
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20
mkfat32.zig
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@ -311,13 +311,13 @@ pub const Fat32 = struct {
return switch (image_size) {
0...35 * 512 - 1 => Error.TooSmall,
35 * 512...64 * MB - 1 => @intCast(u8, std.math.max(512, bytes_per_sector) / bytes_per_sector),
64 * MB...128 * MB - 1 => @intCast(u8, std.math.max(1024, bytes_per_sector) / bytes_per_sector),
128 * MB...256 * MB - 1 => @intCast(u8, std.math.max(2048, bytes_per_sector) / bytes_per_sector),
256 * MB...8 * GB - 1 => @intCast(u8, std.math.max(4096, bytes_per_sector) / bytes_per_sector),
8 * GB...16 * GB - 1 => @intCast(u8, std.math.max(8192, bytes_per_sector) / bytes_per_sector),
16 * GB...32 * GB - 1 => @intCast(u8, std.math.max(16384, bytes_per_sector) / bytes_per_sector),
32 * GB...2 * TB - 1 => @intCast(u8, std.math.max(32768, bytes_per_sector) / bytes_per_sector),
35 * 512...64 * MB - 1 => @intCast(std.math.max(512, bytes_per_sector) / bytes_per_sector),
64 * MB...128 * MB - 1 => @intCast(std.math.max(1024, bytes_per_sector) / bytes_per_sector),
128 * MB...256 * MB - 1 => @intCast(std.math.max(2048, bytes_per_sector) / bytes_per_sector),
256 * MB...8 * GB - 1 => @intCast(std.math.max(4096, bytes_per_sector) / bytes_per_sector),
8 * GB...16 * GB - 1 => @intCast(std.math.max(8192, bytes_per_sector) / bytes_per_sector),
16 * GB...32 * GB - 1 => @intCast(std.math.max(16384, bytes_per_sector) / bytes_per_sector),
32 * GB...2 * TB - 1 => @intCast(std.math.max(32768, bytes_per_sector) / bytes_per_sector),
else => Error.TooLarge,
};
}
@ -354,7 +354,7 @@ pub const Fat32 = struct {
fn createSerialNumber() u32 {
// TODO: Get the actual date. Currently there is no std lib for human readable date.
const year = 2020;
const month = 09;
const month = 9;
const day = 27;
const hour = 13;
const minute = 46;
@ -541,14 +541,14 @@ pub const Fat32 = struct {
}
// See: https://board.flatassembler.net/topic.php?t=12680
var sectors_per_fat = @intCast(u32, (image_size - getReservedSectors() + (2 * options.cluster_size)) / ((options.cluster_size * (options.sector_size / 4)) + 2));
var sectors_per_fat: u8 = @intCast((image_size - getReservedSectors() + (2 * options.cluster_size)) / ((options.cluster_size * (options.sector_size / 4)) + 2));
// round up sectors
sectors_per_fat = (sectors_per_fat + options.sector_size - 1) / options.sector_size;
return Header{
.bytes_per_sector = options.sector_size,
.sectors_per_cluster = options.cluster_size,
.total_sectors = @intCast(u32, @divExact(image_size, options.sector_size)),
.total_sectors = @intCast(@divExact(image_size, options.sector_size)),
.sectors_per_fat = sectors_per_fat,
.serial_number = createSerialNumber(),
.volume_label = options.volume_name,