/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
unsigned char sb[1024];
- int size;
+ unsigned long size;
if (lseek(fd, 64*1024, 0) != 64*1024)
return 0;
if (read(fd, sb, 1024) != 1024)
return 0;
fprintf(stderr, Name ": %s appears to contain a reiserfs file system\n",name);
size = sb[0]|(sb[1]|(sb[2]|sb[3]<<8)<<8)<<8;
- fprintf(stderr, " size = %dK\n", size*4);
+ fprintf(stderr, " size = %luK\n", size*4);
return 1;
}
{
void *super;
struct mdinfo info;
- struct mddev_ident_s ident;
time_t crtime;
char *level;
struct supertype *st = guess_super(fd);
/* Looks like a raid array .. */
fprintf(stderr, Name ": %s appears to be part of a raid array:\n",
name);
- st->ss->getinfo_super(&info, &ident, super);
+ st->ss->getinfo_super(&info, super);
free(super);
crtime = info.array.ctime;
level = map_num(pers, info.array.level);
int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s)
{
}
-char *map_dev(int major, int minor)
+char *map_dev(int major, int minor, int create)
{
#if 0
fprintf(stderr, "Warning - fail to map %d,%d to a device name\n",
int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s)
{
- if ((stb->st_mode&S_IFMT)== S_IFBLK) {
- char *n = strdup(name);
- struct devmap *dm = malloc(sizeof(*dm));
- if (dm) {
- dm->major = major(stb->st_rdev);
- dm->minor = minor(stb->st_rdev);
- dm->name = n;
- dm->next = devlist;
- devlist = dm;
+ struct stat st;
+ if (S_ISLNK(stb->st_mode)) {
+ stat(name, &st);
+ stb = &st;
}
- }
- return 0;
+
+ if ((stb->st_mode&S_IFMT)== S_IFBLK) {
+ char *n = strdup(name);
+ struct devmap *dm = malloc(sizeof(*dm));
+ if (strncmp(n, "/dev/./", 7)==0)
+ strcpy(n+4, name+6);
+ if (dm) {
+ dm->major = major(stb->st_rdev);
+ dm->minor = minor(stb->st_rdev);
+ dm->name = n;
+ dm->next = devlist;
+ devlist = dm;
+ }
+ }
+ return 0;
}
/*
* deliberately so prefer it over a standard name.
* This applies only to names for MD devices.
*/
-char *map_dev(int major, int minor)
+char *map_dev(int major, int minor, int create)
{
struct devmap *p;
char *std = NULL, *nonstd=NULL;
if (!devlist_ready) {
- nftw("/dev", add_dev, 10, FTW_PHYS);
+ char *dev = "/dev";
+ struct stat stb;
+ if (lstat(dev, &stb)==0 &&
+ S_ISLNK(stb.st_mode))
+ dev = "/dev/.";
+ nftw(dev, add_dev, 10, FTW_PHYS);
devlist_ready=1;
}
nonstd = p->name;
}
}
+ if (create && !std && !nonstd) {
+ static char buf[30];
+ snprintf(buf, 1024, "%d:%d", major, minor);
+ nonstd = buf;
+ }
+
return nonstd ? nonstd : std;
}
&& (stb.st_rdev == rdev))
return devname;
}
- dn = map_dev(major(rdev), minor(rdev));
+ dn = map_dev(major(rdev), minor(rdev), 0);
if (dn)
return dn;
snprintf(devname, sizeof(devname), "/dev/.tmp.md%d", dev);
rv = ss->load_super(st, fd, &sbp, NULL);
if (rv == 0) {
struct mdinfo info;
- struct mddev_ident_s ident;
- ss->getinfo_super(&info, &ident, sbp);
+ ss->getinfo_super(&info, sbp);
if (bestsuper == -1 ||
besttime < info.array.ctime) {
bestsuper = i;
return NULL;
}
-unsigned long long get_component_size(int fd)
-{
- /* Find out the component size of the array.
- * We cannot trust GET_ARRAY_INFO ioctl as it's
- * size field is only 32bits.
- * So look in /sys/block/mdXXX/md/component_size
- */
- struct stat stb;
- char fname[50];
- int n;
- if (fstat(fd, &stb)) return 0;
- if (major(stb.st_rdev) == 9)
- sprintf(fname, "/sys/block/md%d/component_size",
- minor(stb.st_rdev));
- else
- sprintf(fname, "/sys/block/md_d%d/component_size",
- minor(stb.st_rdev)/16);
- fd = open(fname, O_RDONLY);
- if (fd < 0)
- return 0;
- n = read(fd, fname, sizeof(fname));
- close(fd);
- if (n == sizeof(fname))
- return 0;
- fname[n] = 0;
- return strtoull(fname, NULL, 10);
-}
-
#ifdef __TINYC__
/* tinyc doesn't optimize this check in ioctl.h out ... */