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Don't use the kern.disks sysctl to find a list of md devices, use the

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MDIOCLIST ioctl instead.

Spotted by:	keramida
This commit is contained in:
Poul-Henning Kamp 2003-01-27 08:01:08 +00:00
parent 16bcbe8cf7
commit e39eff98a0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=109930
1 changed files with 7 additions and 41 deletions
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48
sbin/mdconfig/mdconfig.c
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@ -204,50 +204,16 @@ SLIST_HEAD(, dl) dlist = SLIST_HEAD_INITIALIZER(&dlist);
int
list(const int fd)
{
char *disklist, *p, *p2, *p3;
int unit;
size_t dll;
struct dl *dp, *di, *dn;
if (sysctlbyname("kern.disks", NULL, &dll, NULL, 0) == -1)
err(1, "sysctlbyname: kern.disks");
if ( (disklist = malloc(dll + 1)) == NULL)
err(1, "malloc");
bzero(disklist, dll + 1);
if (sysctlbyname("kern.disks", disklist, &dll, NULL, 0) == -1)
err(1, "sysctlbyname: kern.disks");
for (p = disklist;
(p2 = strsep(&p, " ")) != NULL;) {
if (strncmp(p2, MD_NAME, sizeof(MD_NAME) - 1) != 0)
continue;
p2 += sizeof(MD_NAME) - 1;
unit = strtoul(p2, &p3, 10);
if (p2 == p3)
continue;
dp = calloc(sizeof *dp, 1);
dp->unit = unit;
dn = SLIST_FIRST(&dlist);
if (dn == NULL || dn->unit > unit) {
SLIST_INSERT_HEAD(&dlist, dp, slist);
} else {
SLIST_FOREACH(di, &dlist, slist) {
dn = SLIST_NEXT(di, slist);
if (dn == NULL || dn->unit > unit) {
SLIST_INSERT_AFTER(di, dp, slist);
break;
}
}
}
if (ioctl(fd, MDIOCLIST, &mdio) < 0)
err(1, "ioctl(/dev/%s)", MDCTL_NAME);
for (unit = 0; unit < mdio.md_pad[0] && unit < MDNPAD - 1; unit++) {
printf("%smd%d", unit > 0 ? " " : "", mdio.md_pad[unit + 1]);
}
SLIST_FOREACH(di, &dlist, slist)
query(fd, di->unit);
while (!SLIST_EMPTY(&dlist)) {
di = SLIST_FIRST(&dlist);
SLIST_REMOVE_HEAD(&dlist, slist);
free(di);
}
free(disklist);
if (mdio.md_pad[0] - unit > 0)
printf(" ... %d more", mdio.md_pad[0] - unit);
printf("\n");
return (0);
}