#include "md_p.h"
#include <sys/utsname.h>
#include <ctype.h>
+#include <dirent.h>
/*
* following taken from linux/blkpg.h because they aren't
*/
int parse_uuid(char *str, int uuid[4])
{
- int hit = 0; /* number of Hex digIT */
- int i;
- char c;
- for (i=0; i<4; i++) uuid[i]=0;
-
- while ((c= *str++)) {
- int n;
- if (c>='0' && c<='9')
- n = c-'0';
- else if (c>='a' && c <= 'f')
- n = 10 + c - 'a';
- else if (c>='A' && c <= 'F')
- n = 10 + c - 'A';
- else if (strchr(":. -", c))
- continue;
- else return 0;
-
- if (hit<32) {
- uuid[hit/8] <<= 4;
- uuid[hit/8] += n;
+ int hit = 0; /* number of Hex digIT */
+ int i;
+ char c;
+ for (i=0; i<4; i++) uuid[i]=0;
+
+ while ((c= *str++)) {
+ int n;
+ if (c>='0' && c<='9')
+ n = c-'0';
+ else if (c>='a' && c <= 'f')
+ n = 10 + c - 'a';
+ else if (c>='A' && c <= 'F')
+ n = 10 + c - 'A';
+ else if (strchr(":. -", c))
+ continue;
+ else return 0;
+
+ if (hit<32) {
+ uuid[hit/8] <<= 4;
+ uuid[hit/8] += n;
+ }
+ hit++;
}
- hit++;
- }
- if (hit == 32)
- return 1;
- return 0;
-
+ if (hit == 32)
+ return 1;
+ return 0;
}
return -1;
}
-
int get_linux_version()
{
struct utsname name;
#endif
}
-int enough(int level, int raid_disks, int layout,
+int enough(int level, int raid_disks, int layout, int clean,
char *avail, int avail_disks)
{
int copies, first;
return avail_disks >= 1;
case 4:
case 5:
- return avail_disks >= raid_disks-1;
+ if (clean)
+ return avail_disks >= raid_disks-1;
+ else
+ return avail_disks >= raid_disks;
case 6:
- return avail_disks >= raid_disks-2;
+ if (clean)
+ return avail_disks >= raid_disks-2;
+ else
+ return avail_disks >= raid_disks;
default:
return 0;
}
if (swapuuid) {
/* parse uuids are hostendian.
* uuid's from some superblocks are big-ending
- * if there is a difference, we need to swap..
+ * if there is a difference, we need to swap..
*/
unsigned char *ac = (unsigned char *)a;
unsigned char *bc = (unsigned char *)b;
return 0;
}
}
+void copy_uuid(void *a, int b[4], int swapuuid)
+{
+ if (swapuuid) {
+ /* parse uuids are hostendian.
+ * uuid's from some superblocks are big-ending
+ * if there is a difference, we need to swap..
+ */
+ unsigned char *ac = (unsigned char *)a;
+ unsigned char *bc = (unsigned char *)b;
+ int i;
+ for (i=0; i<16; i+= 4) {
+ ac[i+0] = bc[i+3];
+ ac[i+1] = bc[i+2];
+ ac[i+2] = bc[i+1];
+ ac[i+3] = bc[i+0];
+ }
+ } else
+ memcpy(a, b, 16);
+}
#ifndef MDASSEMBLE
int check_ext2(int fd, char *name)
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 = %luK\n", size*4);
-
+
return 1;
}
int check_raid(int fd, char *name)
{
- void *super;
struct mdinfo info;
time_t crtime;
char *level;
struct supertype *st = guess_super(fd);
if (!st) return 0;
- st->ss->load_super(st, fd, &super, name);
+ st->ss->load_super(st, fd, name);
/* Looks like a raid array .. */
fprintf(stderr, Name ": %s appears to be part of a raid array:\n",
name);
- st->ss->getinfo_super(&info, super);
- free(super);
+ st->ss->getinfo_super(st, &info);
+ st->ss->free_super(st);
crtime = info.array.ctime;
level = map_num(pers, info.array.level);
if (!level) level = "-unknown-";
{
/* tests if dev is a "standard" md dev name.
* i.e if the last component is "/dNN" or "/mdNN",
- * where NN is a string of digits
+ * where NN is a string of digits
+ * Returns 1 if a partitionable standard,
+ * -1 if non-partitonable,
+ * 0 if not a standard name.
*/
char *d = strrchr(dev, '/');
int type=0;
return ftw(path, add_dev_1, nopenfd);
}
#else
-int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s)
-{
- return 0;
-}
int nftw(const char *path, int (*han)(const char *name, const struct stat *stb, int flag, struct FTW *s), int nopenfd, int flags)
{
return 0;
newcsum+= superc[i];
csum = (newcsum& 0xffffffff) + (newcsum>>32);
#ifdef __alpha__
-/* The in-kernel checksum calculation is always 16bit on
+/* The in-kernel checksum calculation is always 16bit on
* the alpha, though it is 32 bit on i386...
* I wonder what it is elsewhere... (it uses and API in
* a way that it shouldn't).
char *human_size_brief(long long bytes)
{
static char buf[30];
-
if (bytes < 5000*1024)
snprintf(buf, sizeof(buf), "%ld.%02ldKiB",
}
#endif
+unsigned long long calc_array_size(int level, int raid_disks, int layout,
+ int chunksize, unsigned long long devsize)
+{
+ int data_disks = 0;
+ switch (level) {
+ case 0: data_disks = raid_disks; break;
+ case 1: data_disks = 1; break;
+ case 4:
+ case 5: data_disks = raid_disks - 1; break;
+ case 6: data_disks = raid_disks - 2; break;
+ case 10: data_disks = raid_disks / (layout & 255) / ((layout>>8)&255);
+ break;
+ }
+ devsize &= ~(unsigned long long)((chunksize>>9)-1);
+ return data_disks * devsize;
+}
+
#if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO)
int get_mdp_major(void)
{
if (strncmp(name, "/dev/.tmp.md", 12)==0)
unlink(name);
}
+
+static int dev2major(int d)
+{
+ if (d >= 0)
+ return MD_MAJOR;
+ else
+ return get_mdp_major();
+}
+
+static int dev2minor(int d)
+{
+ if (d >= 0)
+ return d;
+ return (-1-d) << MdpMinorShift;
+}
+
+int find_free_devnum(int use_partitions)
+{
+ int devnum;
+ for (devnum = 127; devnum != 128;
+ devnum = devnum ? devnum-1 : (1<<22)-1) {
+ char *dn;
+ int _devnum;
+
+ _devnum = use_partitions ? (-1-devnum) : devnum;
+ if (mddev_busy(_devnum))
+ continue;
+ /* make sure it is new to /dev too, at least as a
+ * non-standard */
+ dn = map_dev(dev2major(_devnum), dev2minor(_devnum), 0);
+ if (dn && ! is_standard(dn, NULL))
+ continue;
+ break;
+ }
+ if (devnum == 128)
+ return NoMdDev;
+ return use_partitions ? (-1-devnum) : devnum;
+}
#endif /* !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) */
int dev_open(char *dev, int flags)
return fd;
}
-struct superswitch *superlist[] = { &super0, &super1, NULL };
+struct superswitch *superlist[] = { &super0, &super1, &super_ddf, &super_imsm, NULL };
+
+#if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO)
+
+struct supertype supertype_container_member;
-struct supertype *super_by_version(int vers, int minor)
+struct supertype *super_by_fd(int fd)
{
- struct supertype *st = malloc(sizeof(*st));
- if (!st) return st;
- if (vers == 0) {
- st->ss = &super0;
- st->max_devs = MD_SB_DISKS;
+ mdu_array_info_t array;
+ int vers;
+ int minor;
+ struct supertype *st = NULL;
+ struct mdinfo *sra;
+ char *verstr;
+ char version[20];
+ int i;
+
+ sra = sysfs_read(fd, 0, GET_VERSION);
+
+ if (sra) {
+ vers = sra->array.major_version;
+ minor = sra->array.minor_version;
+ verstr = sra->text_version;
+ } else {
+ if (ioctl(fd, GET_ARRAY_INFO, &array))
+ array.major_version = array.minor_version = 0;
+ vers = array.major_version;
+ minor = array.minor_version;
+ verstr = "";
}
- if (vers == 1) {
- st->ss = &super1;
- st->max_devs = 384;
+ if (vers != -1) {
+ sprintf(version, "%d.%d", vers, minor);
+ verstr = version;
}
- st->minor_version = minor;
+ if (minor == -2 && verstr[0] == '/')
+ st = &supertype_container_member;
+ else
+ for (i = 0; st == NULL && superlist[i] ; i++)
+ st = superlist[i]->match_metadata_desc(verstr);
+
+ if (sra)
+ sysfs_free(sra);
+ if (st)
+ st->sb = NULL;
return st;
}
+#endif /* !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) */
+
+
+struct supertype *dup_super(struct supertype *st)
+{
+ struct supertype *stnew = NULL;
+ char *verstr = NULL;
+ char version[20];
+ int i;
+
+ if (!st)
+ return st;
+
+ if (st->ss->text_version)
+ strcpy(version, st->ss->text_version);
+ else if (st->minor_version == -1)
+ sprintf(version, "%d", st->ss->major);
+ else
+ sprintf(version, "%d.%d", st->ss->major, st->minor_version);
+ verstr = version;
+
+ for (i = 0; stnew == NULL && superlist[i] ; i++)
+ stnew = superlist[i]->match_metadata_desc(verstr);
+
+ if (stnew)
+ stnew->sb = NULL;
+ return stnew;
+}
struct supertype *guess_super(int fd)
{
struct supertype *st;
unsigned long besttime = 0;
int bestsuper = -1;
-
- void *sbp = NULL;
int i;
st = malloc(sizeof(*st));
int rv;
ss = superlist[i];
st->ss = NULL;
- rv = ss->load_super(st, fd, &sbp, NULL);
+ rv = ss->load_super(st, fd, NULL);
if (rv == 0) {
struct mdinfo info;
- ss->getinfo_super(&info, sbp);
+ st->ss->getinfo_super(st, &info);
if (bestsuper == -1 ||
besttime < info.array.ctime) {
bestsuper = i;
besttime = info.array.ctime;
}
- free(sbp);
+ ss->free_super(st);
}
}
if (bestsuper != -1) {
int rv;
st->ss = NULL;
- rv = superlist[bestsuper]->load_super(st, fd, &sbp, NULL);
+ rv = superlist[bestsuper]->load_super(st, fd, NULL);
if (rv == 0) {
- free(sbp);
+ superlist[bestsuper]->free_super(st);
return st;
}
}
return NULL;
}
+/* Return size of device in bytes */
+int get_dev_size(int fd, char *dname, unsigned long long *sizep)
+{
+ unsigned long long ldsize;
+ struct stat st;
+
+ if (fstat(fd, &st) != -1 && S_ISREG(st.st_mode))
+ ldsize = (unsigned long long)st.st_size;
+ else
+#ifdef BLKGETSIZE64
+ if (ioctl(fd, BLKGETSIZE64, &ldsize) != 0)
+#endif
+ {
+ unsigned long dsize;
+ if (ioctl(fd, BLKGETSIZE, &dsize) == 0) {
+ ldsize = dsize;
+ ldsize <<= 9;
+ } else {
+ if (dname)
+ fprintf(stderr, Name ": Cannot get size of %s: %s\b",
+ dname, strerror(errno));
+ return 0;
+ }
+ }
+ *sizep = ldsize;
+ return 1;
+}
+
+void get_one_disk(int mdfd, mdu_array_info_t *ainf, mdu_disk_info_t *disk)
+{
+ int d;
+ ioctl(mdfd, GET_ARRAY_INFO, ainf);
+ for (d = 0 ; d < ainf->raid_disks + ainf->nr_disks ; d++)
+ if (ioctl(mdfd, GET_DISK_INFO, disk) == 0)
+ return;
+}
+
+int open_container(int fd)
+{
+ /* 'fd' is a block device. Find out if it is in use
+ * by a container, and return an open fd on that container.
+ */
+ char path[256];
+ char *e;
+ DIR *dir;
+ struct dirent *de;
+ int dfd, n;
+ char buf[200];
+ int major, minor;
+ struct stat st;
+
+ if (fstat(fd, &st) != 0)
+ return -1;
+ sprintf(path, "/sys/dev/block/%d:%d/holders",
+ (int)major(st.st_rdev), (int)minor(st.st_rdev));
+ e = path + strlen(path);
+
+ dir = opendir(path);
+ if (!dir)
+ return -1;
+ while ((de = readdir(dir))) {
+ if (de->d_ino == 0)
+ continue;
+ if (de->d_name[0] == '.')
+ continue;
+ sprintf(e, "/%s/dev", de->d_name);
+ dfd = open(path, O_RDONLY);
+ if (dfd < 0)
+ continue;
+ n = read(dfd, buf, sizeof(buf));
+ close(dfd);
+ if (n <= 0 || n >= sizeof(buf))
+ continue;
+ buf[n] = 0;
+ if (sscanf(buf, "%d:%d", &major, &minor) != 2)
+ continue;
+ sprintf(buf, "%d:%d", major, minor);
+ dfd = dev_open(buf, O_RDONLY);
+ if (dfd >= 0) {
+ closedir(dir);
+ return dfd;
+ }
+ }
+ return -1;
+}
+
+char *devnum2devname(int num)
+{
+ char name[100];
+ if (num > 0)
+ sprintf(name, "md%d", num);
+ else
+ sprintf(name, "md_d%d", -1-num);
+ return strdup(name);
+}
+
+int fd2devnum(int fd)
+{
+ struct stat stb;
+ if (fstat(fd, &stb) == 0 &&
+ (S_IFMT&stb.st_mode)==S_IFBLK) {
+ if (major(stb.st_rdev) == MD_MAJOR)
+ return minor(stb.st_rdev);
+ else
+ return -1- (minor(stb.st_rdev)>>6);
+ }
+ return -1;
+}
#ifdef __TINYC__
/* tinyc doesn't optimize this check in ioctl.h out ... */
projects / thirdparty / mdadm.git / blobdiff