Use DIOCGPC98 ioctl to write boot block.
This commit is contained in:
parent
969e2ea158
commit
afb7a66e08
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=110678
@ -59,6 +59,7 @@
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/diskpc98.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
@ -69,16 +70,19 @@
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#define BOOTSIZE 0x2000
|
||||
#define IPLSIZE 512 /* IPL size */
|
||||
#define BOOTMENUSIZE 7168 /* Max HDD boot menu size */
|
||||
#define BOOTMENUOFF 0x400
|
||||
|
||||
static char *mkrdev(char *);
|
||||
static void usage(void);
|
||||
static int read_boot(const char *, u_char *);
|
||||
static int write_boot(const char *, u_char *);
|
||||
|
||||
u_char boot0buf[0x2000];
|
||||
char ipl[IPLSIZE];
|
||||
char menu[BOOTMENUSIZE];
|
||||
u_char boot0buf[BOOTSIZE];
|
||||
u_char ipl[IPLSIZE];
|
||||
u_char menu[BOOTMENUSIZE];
|
||||
|
||||
/*
|
||||
* Produce a device path for a "canonical" name, where appropriate.
|
||||
@ -110,6 +114,56 @@ usage(void)
|
||||
exit(1);
|
||||
}
|
||||
|
||||
static int
|
||||
read_boot(const char *disk, u_char *boot)
|
||||
{
|
||||
int fd, n;
|
||||
|
||||
/* Read IPL, partition table and HDD boot menu. */
|
||||
fd = open(disk, O_RDONLY);
|
||||
if (fd < 0)
|
||||
err(1, "%s", disk);
|
||||
n = read(fd, boot, BOOTSIZE);
|
||||
if (n != BOOTSIZE)
|
||||
errx(1, "%s: short read", disk);
|
||||
close(fd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
write_boot(const char *disk, u_char *boot)
|
||||
{
|
||||
int fd, n, i;
|
||||
char buf[MAXPATHLEN];
|
||||
|
||||
fd = open(disk, O_RDWR);
|
||||
if (fd != -1) {
|
||||
if (lseek(fd, 0, SEEK_SET) == -1)
|
||||
err(1, "%s", disk);
|
||||
if ((n = write(fd, boot, BOOTSIZE)) < 0)
|
||||
err(1, "%s", disk);
|
||||
if (n != BOOTSIZE)
|
||||
errx(1, "%s: short write", disk);
|
||||
close(fd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
for (i = 0; i < NDOSPART; i++) {
|
||||
snprintf(buf, sizeof(buf), "%ss%d", disk, i + 1);
|
||||
fd = open(buf, O_RDONLY);
|
||||
if (fd < 0)
|
||||
continue;
|
||||
n = ioctl(fd, DIOCGPC98, boot);
|
||||
if (n != 0)
|
||||
err(1, "%s: ioctl DIOCGPC98", disk);
|
||||
close(fd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
err(1, "%s", disk);
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
@ -119,7 +173,7 @@ main(int argc, char *argv[])
|
||||
char *disk;
|
||||
int B_flag = 0;
|
||||
int c;
|
||||
int fd, fd1;
|
||||
int fd1;
|
||||
int n;
|
||||
int secsize = 512;
|
||||
int v_flag = 0, version;
|
||||
@ -177,15 +231,7 @@ main(int argc, char *argv[])
|
||||
usage();
|
||||
disk = mkrdev(*argv);
|
||||
|
||||
/* Read IPL, partition table and HDD boot menu. */
|
||||
fd = open(disk, O_RDWR);
|
||||
if (fd < 0)
|
||||
err(1, "%s", disk);
|
||||
n = read(fd, boot0buf, 0x2000);
|
||||
if (n != 0x2000)
|
||||
errx(1, "%s: short read", disk);
|
||||
if (!B_flag && !v_flag)
|
||||
close(fd);
|
||||
read_boot(disk, boot0buf);
|
||||
|
||||
if (iplbakpath != NULL) {
|
||||
fd1 = open(iplbakpath, O_WRONLY | O_CREAT | O_TRUNC, 0666);
|
||||
@ -242,14 +288,8 @@ main(int argc, char *argv[])
|
||||
if (v_flag)
|
||||
*(boot0buf + secsize - 4) = (u_char)version;
|
||||
|
||||
if (B_flag || v_flag) {
|
||||
if (lseek(fd, 0, SEEK_SET) == -1 ||
|
||||
(n = write(fd, boot0buf, 0x2000)) < 0 ||
|
||||
close(fd))
|
||||
err(1, "%s", disk);
|
||||
if (n != 0x2000)
|
||||
errx(1, "%s: short write", disk);
|
||||
}
|
||||
if (B_flag || v_flag)
|
||||
write_boot(disk, boot0buf);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user