Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 16 Apr 2003 22:19:48 +0200 | From | Andries Brouwer <> | Subject | Re: [PATCH] kdevt-diff |
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On Wed, Apr 16, 2003 at 09:48:16AM -0700, H. Peter Anvin wrote:
> Not really, but it's certainly a nice capability. However, iso9660 > (RockRidge, actually) has 64 bits of dev_t space; it's actually split > into two 32-bit entries specified as "high 32 bits" and "low 32 bits." > > I'm not positive if Linux expects those to contain major:minor or > 0:<16-bit-dev_t>.
case SIG('P','N'): { int high, low; high = isonum_733(rr->u.PN.dev_high); low = isonum_733(rr->u.PN.dev_low); /* * The Rock Ridge standard specifies that if sizeof(dev_t) <= 4, * then the high field is unused, and the device number is completely * stored in the low field. Some writers may ignore this subtlety, * and as a result we test to see if the entire device number is * stored in the low field, and use that. */ if((low & ~0xff) && high == 0) { inode->i_rdev = mk_kdev(low >> 8, low & 0xff); } else { inode->i_rdev = mk_kdev(high, low); } } break;
(Here isonum_733 gets 32 bits.)
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