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FUSE seems to allow short writes without errors but PUFFS doesn't. Work

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around this by returning ENOSPC in case of a short write to avoid protocol
errors. This change is based on problem analysis provided by Antti Kantee.

This fixes PR lib/45129 by myself.
This commit is contained in:
tron 2012-12-30 10:04:22 +00:00
parent 8f9dc34369
commit 16ff83dd36
1 changed files with 7 additions and 5 deletions
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12
lib/librefuse/refuse.c
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@ -1,4 +1,4 @@
/* $NetBSD: refuse.c,v 1.95 2011/11/24 01:56:22 manu Exp $ */
/* $NetBSD: refuse.c,v 1.96 2012/12/30 10:04:22 tron Exp $ */
/*
* Copyright © 2007 Alistair Crooks. All rights reserved.
@ -31,7 +31,7 @@
#include <sys/cdefs.h>
#if !defined(lint)
__RCSID("$NetBSD: refuse.c,v 1.95 2011/11/24 01:56:22 manu Exp $");
__RCSID("$NetBSD: refuse.c,v 1.96 2012/12/30 10:04:22 tron Exp $");
#endif /* !lint */
#include <sys/types.h>
@ -1083,14 +1083,16 @@ puffs_fuse_node_write(struct puffs_usermount *pu, void *opc, uint8_t *buf,
ret = (*fuse->op.write)(path, (char *)buf, *resid, offset,
&rn->file_info);
if (ret > 0) {
if (ret >= 0) {
if ((uint64_t)(offset + ret) > pn->pn_va.va_size)
pn->pn_va.va_size = offset + ret;
*resid -= ret;
ret = 0;
ret = (*resid == 0) ? 0 : ENOSPC;
} else {
ret = -ret;
}
return -ret;
return ret;
}