d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Write the MBR by using the bootcode verb of the gpart class.

Browse Source 
The "write MBR" verb is kept for backward compatibility, but
the DIOCSMBR ioctl has been removed.
This commit is contained in:
Marcel Moolenaar 2009-03-02 04:35:52 +00:00
parent fe708974cd
commit a565cc2897
1 changed files with 22 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
usr.sbin/boot0cfg/boot0cfg.c
View File

@ -343,9 +343,8 @@ read_mbr(const char *disk, u_int8_t **mbr, int check_version)
static void
write_mbr(const char *fname, int flags, u_int8_t *mbr, int mbr_size)
{
int fd, p;
int fd;
ssize_t n;
char *s;
const char *errmsg;
char *pname;
struct gctl_req *grq;
@ -359,6 +358,13 @@ write_mbr(const char *fname, int flags, u_int8_t *mbr, int mbr_size)
return;
}
/*
* If we're called to write to a backup file, don't try to
* write through GEOM. It only generates additional errors.
*/
if (flags != 0)
return;
/* Try open it read only. */
fd = open(fname, O_RDONLY);
if (fd == -1) {
@ -370,39 +376,28 @@ write_mbr(const char *fname, int flags, u_int8_t *mbr, int mbr_size)
warn("error getting providername for %s", fname);
return;
}
if (flags != 0)
err(1, "%s", fname);
grq = gctl_get_handle();
gctl_ro_param(grq, "class", -1, "PART");
gctl_ro_param(grq, "geom", -1, pname);
gctl_ro_param(grq, "verb", -1, "bootcode");
gctl_ro_param(grq, "bootcode", mbr_size, mbr);
gctl_ro_param(grq, "flags", -1, "C");
errmsg = gctl_issue(grq);
if (errmsg == NULL)
goto out;
grq = gctl_get_handle();
gctl_ro_param(grq, "verb", -1, "write MBR");
gctl_ro_param(grq, "class", -1, "MBR");
gctl_ro_param(grq, "geom", -1, pname);
gctl_ro_param(grq, "data", mbr_size, mbr);
errmsg = gctl_issue(grq);
if (errmsg == NULL) {
free(pname);
return;
}
warnx("%s: %s", fname, pname);
if (errmsg != NULL)
err(1, "write_mbr: %s", fname);
out:
free(pname);
gctl_free(grq);
#ifdef DIOCSMBR
for (p = 1; p < 5; p++) {
asprintf(&s, "%ss%d", fname, p);
fd = open(s, O_RDONLY);
if (fd < 0) {
free(s);
continue;
}
n = ioctl(fd, DIOCSMBR, (mbr));
if (n != 0)
err(1, "%s: ioctl DIOCSMBR", fname);
close(fd);
free(s);
return;
}
#endif
err(1, "write_mbr: %s", fname);
}
/*