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https://github.com/tailix/loadwarka.git
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Move code to func
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parent
2650815a1b
commit
aba85c2cd6
1 changed files with 29 additions and 10 deletions
39
src/main.c
39
src/main.c
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@ -16,6 +16,7 @@
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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@ -49,33 +50,51 @@ struct Mbr {
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}
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__attribute__((packed));
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static bool create_mbr_file(
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const char *output_filename,
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uint32_t disk_id,
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const char *bootstrap_filename
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);
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int main()
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{
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if (create_mbr_file("disk.img", 0xf01834d0, "src/x86_boot_sector.bin")) {
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return 0;
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} else {
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return 1;
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}
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}
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bool create_mbr_file(
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const char *const output_filename,
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const uint32_t disk_id,
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const char *const bootstrap_filename
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) {
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struct Mbr mbr;
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{
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memset(&mbr, 0, sizeof(mbr));
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mbr.info.magic = MBR_MAGIC;
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mbr.info.disk_id = 0xf01834d0;
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mbr.info.disk_id = disk_id;
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mbr.info.reserved = 0;
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}
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{
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FILE *fd = fopen("src/x86_boot_sector.bin", "r");
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if (bootstrap_filename) {
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FILE *fd = fopen(bootstrap_filename, "r");
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if (fd == NULL) {
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fprintf(stderr, "Can't open bootstrap file\n");
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return 1;
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return false;
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}
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const size_t size = fread(&mbr.bootstrap, 1, MBR_BOOTSTRAP_SIZE, fd);
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if (size == 0) {
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fprintf(stderr, "Empty bootstrap file\n");
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return 1;
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return false;
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}
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if (!feof(fd)) {
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fprintf(stderr, "Too long bootstrap file\n");
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return 1;
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return false;
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}
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fclose(fd);
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@ -92,20 +111,20 @@ int main()
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}
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{
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FILE *fd = fopen("disk.img", "wb");
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FILE *fd = fopen(output_filename, "wb");
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if (fd == NULL) {
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fprintf(stderr, "Can't open image file\n");
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return 1;
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return false;
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}
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const size_t size = fwrite(mbr_ptr, 1, sizeof(mbr), fd);
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if (size != sizeof(mbr)) {
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fprintf(stderr, "Can't write image file\n");
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return 1;
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return false;
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}
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fclose(fd);
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}
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return 0;
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return true;
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}
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