diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 119 |
1 files changed, 115 insertions, 4 deletions
@@ -88,10 +88,10 @@ int md_get_version(int fd) return -1; if (ioctl(fd, RAID_VERSION, &vers) == 0) - return (vers.major<<16) | (vers.minor<<8) | vers.patchlevel; + return (vers.major*10000) + (vers.minor*100) + vers.patchlevel; if (MAJOR(stb.st_rdev) == MD_MAJOR) - return (36<<8); + return (3600); return -1; } @@ -105,7 +105,7 @@ int get_linux_version() if (sscanf(name.release, "%d.%d.%d", &a,&b,&c)!= 3) return -1; - return (a<<16)+(b<<8)+c; + return (a*1000000)+(b*1000)+c; } int enough(int level, int raid_disks, int avail_disks) @@ -211,7 +211,7 @@ int load_super(int fd, mdp_super_t *super) if (lseek64(fd, offset, 0)< 0LL) return 3; - if (read(fd, &super, sizeof(super)) != sizeof(super)) + if (read(fd, super, sizeof(*super)) != sizeof(*super)) return 4; if (super->md_magic != MD_SB_MAGIC) @@ -222,3 +222,114 @@ int load_super(int fd, mdp_super_t *super) return 0; } + +int check_ext2(int fd, char *name) +{ + /* + * Check for an ext2fs file system. + * Superblock is always 1K at 1K offset + * + * s_magic is le16 at 56 == 0xEF53 + * report mtime - le32 at 44 + * blocks - le32 at 4 + * logblksize - le32 at 24 + */ + unsigned char sb[1024]; + time_t mtime; + int size, bsize; + if (lseek(fd, 1024,0)!= 1024) + return 0; + if (read(fd, sb, 1024)!= 1024) + return 0; + if (sb[56] != 0x53 || sb[57] != 0xef) + return 0; + + mtime = sb[44]|(sb[45]|(sb[46]|sb[47]<<8)<<8)<<8; + bsize = sb[24]|(sb[25]|(sb[26]|sb[27]<<8)<<8)<<8; + size = sb[4]|(sb[5]|(sb[6]|sb[7]<<8)<<8)<<8; + fprintf(stderr, Name ": %s appears to contain an ext2fs file system\n", + name); + fprintf(stderr," size=%dK mtime=%s", + size*(1<<bsize), ctime(&mtime)); + return 1; +} + +int check_reiser(int fd, char *name) +{ + /* + * superblock is at 64K + * size is 1024; + * Magic string "ReIsErFs" or "ReIsEr2Fs" at 52 + * + */ + unsigned char sb[1024]; + int size; + if (lseek(fd, 64*1024, 0) != 64*1024) + return 0; + if (read(fd, sb, 1024) != 1024) + return 0; + if (strncmp(sb+52, "ReIsErFs",8)!=0 && + strncmp(sb+52, "ReIsEr2Fs",9)!=0) + 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); + + return 1; +} + +int check_raid(int fd, char *name) +{ + mdp_super_t super; + time_t crtime; + if (load_super(fd, &super)) + return 0; + /* Looks like a raid array .. */ + fprintf(stderr, Name ": %s appear to be part of a raid array:\n", + name); + crtime = super.ctime; + fprintf(stderr, " level=%d disks=%d ctime=%s", + super.level, super.raid_disks, ctime(&crtime)); + return 1; +} + + +int ask(char *mesg) +{ + char *add = ""; + int i; + for (i=0; i<5; i++) { + char buf[100]; + fprintf(stderr, "%s%s", mesg, add); + fflush(stderr); + if (fgets(buf, 100, stdin)==NULL) + return 0; + if (buf[0]=='y' || buf[0]=='Y') + return 1; + if (buf[0]=='n' || buf[0]=='N') + return 0; + add = "(y/n) "; + } + fprintf(stderr, Name ": assuming 'no'\n"); + return 0; +} + +char *map_num(mapping_t *map, int num) +{ + while (map->name) { + if (map->num == num) + return map->name; + map++; + } + return NULL; +} + +int map_name(mapping_t *map, char *name) +{ + while (map->name) { + if (strcmp(map->name, name)==0) + return map->num; + map++; + } + return -10; +} |