diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -386,6 +386,15 @@ unsigned long calc_csum(void *super, int bytes) for(i=0; i<bytes/4; i++) newcsum+= superc[i]; csum = (newcsum& 0xffffffff) + (newcsum>>32); +#ifdef __alpha__ +/* 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). + */ + csum = (csum & 0xffff) + (csum >> 16); + csum = (csum & 0xffff) + (csum >> 16); +#endif return csum; } @@ -544,6 +553,8 @@ struct supertype *guess_super(int fd) */ struct superswitch *ss; struct supertype *st; + unsigned long besttime = 0; + int bestsuper = -1; void *sbp = NULL; int i; @@ -555,9 +566,25 @@ struct supertype *guess_super(int fd) ss = superlist[i]; rv = ss->load_super(st, fd, &sbp, NULL); if (rv == 0) { + struct mdinfo info; + ss->getinfo_super(&info, sbp); + if (bestsuper == -1 || + besttime < info.array.ctime) { + bestsuper = i; + besttime = info.array.ctime; + st->ss = NULL; + } + free(sbp); + } + } + if (bestsuper != -1) { + int rv; + rv = superlist[bestsuper]->load_super(st, fd, &sbp, NULL); + if (rv == 0) { free(sbp); return st; } } + free(st); return NULL; } |