feat: rank drivers at compile time

kernel/fs/blockdev.c

@@ -9,7 +9,6 @@
 #include <tasks/task.h>
 #include <tasks/locking.h>
 #include <attributes.h>
-#include <libc/sort.h>
 #include "blockdev.h"
 
 #define MAX_BLOCK_DEVS 64
@@ -80,21 +79,6 @@ void block_dev_scan() {
     }
 }
 
-int block_dev_driver_comp(const void *a, const void *b) {
-    int rank_a = ((struct block_dev_driver *) a)->rank;
-    int rank_b = ((struct block_dev_driver *) b)->rank;
-    if (rank_a > rank_b) {
-        return 1;
-    } else if (rank_a < rank_b) {
-        return -1;
-    }
-    return 0;
-}
-
-void block_dev_pre_init() {
-    qsort(DRIVER(0), NUM_DRIVERS, sizeof(struct block_dev_driver), block_dev_driver_comp);
-}
-
 void noreturn block_dev_task(void *data) {
     while (true) {
         semaphore_wait(block_semaphore);

kernel/fs/blockdev.h

@@ -34,7 +34,6 @@ typedef uint8_t (*block_device_access)(const block_device *device, uint8_t direc
 
 struct block_dev_driver {
     char name[16];
-    uint16_t rank;
     struct {
         uint8_t root_only: 1;
     } flags;
@@ -42,7 +41,7 @@ struct block_dev_driver {
     block_device_driver_free free_device;
 } __attribute__((__aligned__(STRUCT_ALIGNMENT)));
 
-#define BLOCK_DEV_DRIVER(data...) GENERIC_DRIVER(block_dev_driver, data)
+#define BLOCK_DEV_DRIVER(order) GENERIC_DRIVER(block_dev_driver, order)
 
 typedef struct block_device {
     struct {
@@ -65,8 +64,6 @@ uint8_t block_dev_register(block_device *device);
 
 void block_dev_free(block_device *device);
 
-void block_dev_pre_init();
-
 void block_dev_start_task();
 
 void block_dev_print_info();

kernel/fs/fat.c

@@ -193,11 +193,10 @@ get_fat_table_value(uint8_t fat_type, const uint8_t *fat_table, uint32_t active_
     return result;
 }
 
-BLOCK_DEV_DRIVER(
+BLOCK_DEV_DRIVER(900) = {
         .name = "fat",
-        .rank = 10000,
         .check_device = fat_check_device,
         .free_device = NULL, // todo
-);
+};
 
 // steal validation code from here https://github.com/torvalds/linux/blob/fcadab740480e0e0e9fa9bd272acd409884d431a/fs/fat/inode.c#L1456

kernel/fs/mbr.c

@@ -100,10 +100,9 @@ void mbr_read_from_ide(uint8_t ide_drive) {
     free(mbr_data);
 }
 
-BLOCK_DEV_DRIVER(
+BLOCK_DEV_DRIVER(200) = {
         .name = "mbr",
-        .rank = 100,
         .flags.root_only = 1,
         .check_device = mbr_check_device,
         .free_device = NULL, // todo
-);
+};