diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 211 |
1 files changed, 0 insertions, 211 deletions
@@ -602,122 +602,6 @@ int is_standard(char *dev, int *nump) return type; } - -/* - * convert a major/minor pair for a block device into a name in /dev, if possible. - * On the first call, walk /dev collecting name. - * Put them in a simple linked listfor now. - */ -struct devmap { - int major, minor; - char *name; - struct devmap *next; -} *devlist = NULL; -int devlist_ready = 0; - -int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s) -{ - struct stat st; - - if (S_ISLNK(stb->st_mode)) { - if (stat(name, &st) != 0) - return 0; - stb = &st; - } - - 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; -} - -#ifndef HAVE_NFTW -#ifdef HAVE_FTW -int add_dev_1(const char *name, const struct stat *stb, int flag) -{ - return add_dev(name, stb, flag, NULL); -} -int nftw(const char *path, int (*han)(const char *name, const struct stat *stb, int flag, struct FTW *s), int nopenfd, int flags) -{ - return ftw(path, add_dev_1, nopenfd); -} -#else -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; -} -#endif /* HAVE_FTW */ -#endif /* HAVE_NFTW */ - -/* - * Find a block device with the right major/minor number. - * If we find multiple names, choose the shortest. - * If we find a name in /dev/md/, we prefer that. - * This applies only to names for MD devices. - */ -char *map_dev(int major, int minor, int create) -{ - struct devmap *p; - char *regular = NULL, *preferred=NULL; - int did_check = 0; - - if (major == 0 && minor == 0) - return NULL; - - retry: - if (!devlist_ready) { - char *dev = "/dev"; - struct stat stb; - while(devlist) { - struct devmap *d = devlist; - devlist = d->next; - free(d->name); - free(d); - } - if (lstat(dev, &stb)==0 && - S_ISLNK(stb.st_mode)) - dev = "/dev/."; - nftw(dev, add_dev, 10, FTW_PHYS); - devlist_ready=1; - did_check = 1; - } - - for (p=devlist; p; p=p->next) - if (p->major == major && - p->minor == minor) { - if (strncmp(p->name, "/dev/md/",8) == 0) { - if (preferred == NULL || - strlen(p->name) < strlen(preferred)) - preferred = p->name; - } else { - if (regular == NULL || - strlen(p->name) < strlen(regular)) - regular = p->name; - } - } - if (!regular && !preferred && !did_check) { - devlist_ready = 0; - goto retry; - } - if (create && !regular && !preferred) { - static char buf[30]; - snprintf(buf, sizeof(buf), "%d:%d", major, minor); - regular = buf; - } - - return preferred ? preferred : regular; -} - unsigned long calc_csum(void *super, int bytes) { unsigned long long newcsum = 0; @@ -828,34 +712,6 @@ unsigned long long calc_array_size(int level, int raid_disks, int layout, return data_disks * devsize; } -int get_mdp_major(void) -{ -static int mdp_major = -1; - FILE *fl; - char *w; - int have_block = 0; - int have_devices = 0; - int last_num = -1; - - if (mdp_major != -1) - return mdp_major; - fl = fopen("/proc/devices", "r"); - if (!fl) - return -1; - while ((w = conf_word(fl, 1))) { - if (have_block && strcmp(w, "devices:")==0) - have_devices = 1; - have_block = (strcmp(w, "Block")==0); - if (isdigit(w[0])) - last_num = atoi(w); - if (have_devices && strcmp(w, "mdp")==0) - mdp_major = last_num; - free(w); - } - fclose(fl); - return mdp_major; -} - #if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) char *get_md_name(int dev) { @@ -1684,73 +1540,6 @@ unsigned long long min_recovery_start(struct mdinfo *array) return recovery_start; } -void fmt_devname(char *name, int num) -{ - if (num >= 0) - sprintf(name, "md%d", num); - else - sprintf(name, "md_d%d", -1-num); -} - -char *devnum2devname(int num) -{ - char name[100]; - fmt_devname(name,num); - return strdup(name); -} - -int devname2devnum(char *name) -{ - char *ep; - int num; - if (strncmp(name, "md_d", 4)==0) - num = -1-strtoul(name+4, &ep, 10); - else - num = strtoul(name+2, &ep, 10); - return num; -} - -int stat2devnum(struct stat *st) -{ - char path[30]; - char link[200]; - char *cp; - int n; - - if ((S_IFMT & st->st_mode) == S_IFBLK) { - if (major(st->st_rdev) == MD_MAJOR) - return minor(st->st_rdev); - else if (major(st->st_rdev) == (unsigned)get_mdp_major()) - return -1- (minor(st->st_rdev)>>MdpMinorShift); - - /* must be an extended-minor partition. Look at the - * /sys/dev/block/%d:%d link which must look like - * ../../block/mdXXX/mdXXXpYY - */ - sprintf(path, "/sys/dev/block/%d:%d", major(st->st_rdev), - minor(st->st_rdev)); - n = readlink(path, link, sizeof(link)-1); - if (n <= 0) - return NoMdDev; - link[n] = 0; - cp = strrchr(link, '/'); - if (cp) *cp = 0; - cp = strrchr(link, '/'); - if (cp && strncmp(cp, "/md", 3) == 0) - return devname2devnum(cp+1); - } - return NoMdDev; - -} - -int fd2devnum(int fd) -{ - struct stat stb; - if (fstat(fd, &stb) == 0) - return stat2devnum(&stb); - return NoMdDev; -} - int mdmon_pid(int devnum) { char path[100]; |