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Fix read retry error case. Closes kern/8300. 

While here, add automatic error retry up to 3 times.
This commit is contained in:
ross 1999-09-01 02:32:26 +00:00
parent e293024ffa
commit ad3beb5695
1 changed files with 10 additions and 3 deletions
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13
sys/lib/libsa/ustarfs.c
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@ -1,4 +1,4 @@
/* $NetBSD: ustarfs.c,v 1.9 1999/06/22 22:44:16 christos Exp $ */
/* $NetBSD: ustarfs.c,v 1.10 1999/09/01 02:32:26 ross Exp $ */
/* [Notice revision 2.2]
* Copyright (c) 1997, 1998 Avalon Computer Systems, Inc.
@ -176,6 +176,7 @@ ustarfs_cylinder_read(f, seek2, forcelabel)
struct open_file *f;
ustoffs seek2;
{
int i;
int e = 0; /* XXX work around gcc warning */
ustoffs lda;
char *xferbase;
@ -205,8 +206,13 @@ ustarfs_cylinder_read(f, seek2, forcelabel)
#if !defined(LIBSA_NO_TWIDDLE)
twiddle();
#endif
e = DEV_STRATEGY(f->f_dev)(f->f_devdata, F_READ, seek2 / 512,
xferrqst, xferbase, &xfercount);
for (i = 0; i < 3; ++i) {
e = DEV_STRATEGY(f->f_dev)(f->f_devdata, F_READ,
seek2 / 512, xferrqst, xferbase, &xfercount);
if (e == 0)
break;
printf("@");
}
if (e)
break;
if (xfercount != xferrqst)
@ -214,6 +220,7 @@ ustarfs_cylinder_read(f, seek2, forcelabel)
(int)xfercount, (int)xferrqst);
xferrqst -= xfercount;
xferbase += xfercount;
seek2 += xfercount;
}
return e;
}