[Qemu-devel] [PATCH v2] tpm: Use EMSGSIZE instead of EBADMSG to compile on OpenBSD

[Stefan Berger]

EBADMSG was only added to OpenBSD very recently. To make QEMU compilable
on older OpenBSD versions use EMSGSIZE instead when a mismatch between
number of received bytes and message size indicated in the header was
found.

Return -EMSGSIZE and convert all other errnos in the same functions to
return the negative errno.

Signed-off-by: Stefan Berger <address@hidden>
---
 hw/tpm/tpm_util.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c
index fb929f6..a83c6f4 100644
--- a/hw/tpm/tpm_util.c
+++ b/hw/tpm/tpm_util.c
@@ -71,7 +71,7 @@ static int tpm_util_test(int fd,
         return errno;
     }
     if (n != requestlen) {
-        return EFAULT;
+        return -EFAULT;
     }
 
     FD_ZERO(&readfds);
@@ -85,13 +85,13 @@ static int tpm_util_test(int fd,
 
     n = read(fd, &buf, sizeof(buf));
     if (n < sizeof(struct tpm_resp_hdr)) {
-        return EFAULT;
+        return -EFAULT;
     }
 
     resp = (struct tpm_resp_hdr *)buf;
     /* check the header */
     if (be32_to_cpu(resp->len) != n) {
-        return EBADMSG;
+        return -EMSGSIZE;
     }
 
     *return_tag = be16_to_cpu(resp->tag);
-- 
2.5.5