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feat: reformatted driver code and linkage. Some optimizations

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This commit is contained in:
Rick Rongen
2021-03-06 19:57:47 +01:00
parent 645e18018d
commit 01efc5e98a
13 changed files with 110 additions and 130 deletions
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19
kernel/fs/fat.c
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@@ -101,18 +101,6 @@ typedef struct {
};
} packed fat_directory_entry;
uint8_t fat_check_device(const block_device *device, uint8_t *first_sector);
block_dev_driver fat_driver = {
.name = "fat",
.check_device = fat_check_device,
.free_device = NULL, // todo
};
void fat_register_block_driver() {
block_dev_register_driver(&fat_driver);
}
void print_chars(char *chars, int amount) {
for (int i = 0; i < amount; ++i) {
if (chars[i] == 0) break;
@@ -120,7 +108,7 @@ void print_chars(char *chars, int amount) {
}
}
uint8_t fat_check_device(const block_device *device, uint8_t *first_sector) {
uint8_t used fat_check_device(const block_device *device, uint8_t *first_sector) {
fat_bpb bpb;
memcpy((uint8_t *) &bpb, first_sector, sizeof(fat_bpb));
if (bpb.bpb.sectors_per_fat == 0 || bpb.bpb.sectors_per_cluster == 0) {
@@ -205,5 +193,10 @@ get_fat_table_value(uint8_t fat_type, const uint8_t *fat_table, uint32_t active_
return result;
}
BLOCK_DEV_DRIVER(
.name = "fat",
.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