diff options
Diffstat (limited to 'emu/port/devfs-posix.c')
| -rw-r--r-- | emu/port/devfs-posix.c | 37 |
1 files changed, 10 insertions, 27 deletions
diff --git a/emu/port/devfs-posix.c b/emu/port/devfs-posix.c index c4aa3d9a..763694d1 100644 --- a/emu/port/devfs-posix.c +++ b/emu/port/devfs-posix.c @@ -632,45 +632,28 @@ fswstat(Chan *c, uchar *buf, int nb) return nb; } -#define QDEVBITS 4 /* 16 devices should be plenty */ -#define MAXDEV (1<<QDEVBITS) -#define QDEVSHIFT (64-QDEVBITS) -#define QINOMASK (((uvlong)1<<QDEVSHIFT)-1) -#define QPATH(d,i) (((uvlong)(d)<<QDEVSHIFT)|((uvlong)(i)&QINOMASK)) - static Qid fsqid(struct stat *st) { Qid q; - ulong dev; - int idev; - static int nqdev = 0; - static ulong qdev[MAXDEV]; - static Lock l; + u16int dev; q.type = QTFILE; if(S_ISDIR(st->st_mode)) q.type = QTDIR; - dev = st->st_dev; - lock(&l); - for(idev = 0; idev < nqdev; idev++) - if(qdev[idev] == dev) - break; - if(idev == nqdev) { - if(nqdev == MAXDEV) { - unlock(&l); - error("too many devices"); + dev = (u16int)st->st_dev; + if(dev & 0x8000){ + static int aware; + if(aware==0){ + aware = 1; + fprint(2, "fs: fsqid: top-bit dev: %#4.4ux\n", dev); } - qdev[nqdev++] = dev; + dev ^= 0x8080; } - unlock(&l); - - if(0) /* we'll just let it be masked off */ - if((uvlong)st->st_ino & ~QINOMASK) - error("inode number too large"); - q.path = QPATH(idev, st->st_ino); + q.path = (uvlong)dev<<48; + q.path ^= st->st_ino; q.vers = st->st_mtime; return q; |