From patchwork Fri Feb 26 14:50:50 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 46333 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 9D0BCB7080 for ; Sat, 27 Feb 2010 01:53:08 +1100 (EST) Received: from localhost ([127.0.0.1]:58825 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Nl1Yv-0005Ld-Ox for incoming@patchwork.ozlabs.org; Fri, 26 Feb 2010 09:53:05 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Nl1Wu-0004sy-12 for qemu-devel@nongnu.org; Fri, 26 Feb 2010 09:51:00 -0500 Received: from [199.232.76.173] (port=59758 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Nl1Wt-0004sm-DP for qemu-devel@nongnu.org; Fri, 26 Feb 2010 09:50:59 -0500 Received: from Debian-exim by monty-python.gnu.org with spam-scanned (Exim 4.60) (envelope-from ) id 1Nl1Wr-0001pz-5U for qemu-devel@nongnu.org; Fri, 26 Feb 2010 09:50:59 -0500 Received: from oxygen.pond.sub.org ([213.239.205.148]:50076) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Nl1Wq-0001op-5B for qemu-devel@nongnu.org; Fri, 26 Feb 2010 09:50:56 -0500 Received: from blackfin.pond.sub.org (pD9E3899F.dip.t-dialin.net [217.227.137.159]) by oxygen.pond.sub.org (Postfix) with ESMTPA id 238CF276D59 for ; Fri, 26 Feb 2010 15:50:52 +0100 (CET) Received: by blackfin.pond.sub.org (Postfix, from userid 500) id 570934E; Fri, 26 Feb 2010 15:50:51 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 26 Feb 2010 15:50:50 +0100 Message-Id: <1267195851-22244-2-git-send-email-armbru@redhat.com> X-Mailer: git-send-email 1.6.6.1 In-Reply-To: <1267195851-22244-1-git-send-email-armbru@redhat.com> References: <1267195851-22244-1-git-send-email-armbru@redhat.com> X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) Cc: Mark McLoughlin , Gerd Hoffmann , "Michael S. Tsirkin" Subject: [Qemu-devel] [PATCH v2 1/2] qdev: Improve diagnostics for bad property values X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Property "vlan" reports "failed to parse" even when the value parses just fine, but the result doesn't name an existing VLAN. Similarly, properties "drive", "chr" and "netdev" misleadingly report "failed to parse" when the value doesn't name an existing host device. Change PropertyInfo method parse to return an error code, so that qdev_prop_parse() can report the error more accurately. Signed-off-by: Markus Armbruster --- hw/qdev-properties.c | 57 +++++++++++++++++++++++++++++-------------------- 1 files changed, 34 insertions(+), 23 deletions(-) diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c index 277ff9e..438eaea 100644 --- a/hw/qdev-properties.c +++ b/hw/qdev-properties.c @@ -44,7 +44,7 @@ static int parse_bit(DeviceState *dev, Property *prop, const char *str) else if (!strncasecmp(str, "off", 3)) bit_prop_set(dev, prop, false); else - return -1; + return -EINVAL; return 0; } @@ -72,7 +72,7 @@ static int parse_uint8(DeviceState *dev, Property *prop, const char *str) /* accept both hex and decimal */ fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx8 : "%" PRIu8; if (sscanf(str, fmt, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -100,7 +100,7 @@ static int parse_uint16(DeviceState *dev, Property *prop, const char *str) /* accept both hex and decimal */ fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx16 : "%" PRIu16; if (sscanf(str, fmt, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -128,7 +128,7 @@ static int parse_uint32(DeviceState *dev, Property *prop, const char *str) /* accept both hex and decimal */ fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx32 : "%" PRIu32; if (sscanf(str, fmt, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -151,7 +151,7 @@ static int parse_int32(DeviceState *dev, Property *prop, const char *str) int32_t *ptr = qdev_get_prop_ptr(dev, prop); if (sscanf(str, "%" PRId32, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -176,7 +176,7 @@ static int parse_hex32(DeviceState *dev, Property *prop, const char *str) uint32_t *ptr = qdev_get_prop_ptr(dev, prop); if (sscanf(str, "%" PRIx32, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -204,7 +204,7 @@ static int parse_uint64(DeviceState *dev, Property *prop, const char *str) /* accept both hex and decimal */ fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx64 : "%" PRIu64; if (sscanf(str, fmt, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -229,7 +229,7 @@ static int parse_hex64(DeviceState *dev, Property *prop, const char *str) uint64_t *ptr = qdev_get_prop_ptr(dev, prop); if (sscanf(str, "%" PRIx64, ptr) != 1) - return -1; + return -EINVAL; return 0; } @@ -283,7 +283,7 @@ static int parse_drive(DeviceState *dev, Property *prop, const char *str) *ptr = drive_get_by_id(str); if (*ptr == NULL) - return -1; + return -ENOENT; return 0; } @@ -309,7 +309,7 @@ static int parse_chr(DeviceState *dev, Property *prop, const char *str) *ptr = qemu_chr_find(str); if (*ptr == NULL) - return -1; + return -ENOENT; return 0; } @@ -340,7 +340,7 @@ static int parse_netdev(DeviceState *dev, Property *prop, const char *str) *ptr = qemu_find_netdev(str); if (*ptr == NULL) - return -1; + return -ENOENT; return 0; } @@ -371,10 +371,10 @@ static int parse_vlan(DeviceState *dev, Property *prop, const char *str) int id; if (sscanf(str, "%d", &id) != 1) - return -1; + return -EINVAL; *ptr = qemu_find_vlan(id, 1); if (*ptr == NULL) - return -1; + return -ENOENT; return 0; } @@ -427,15 +427,15 @@ static int parse_mac(DeviceState *dev, Property *prop, const char *str) for (i = 0, pos = 0; i < 6; i++, pos += 3) { if (!qemu_isxdigit(str[pos])) - return -1; + return -EINVAL; if (!qemu_isxdigit(str[pos+1])) - return -1; + return -EINVAL; if (i == 5) { if (str[pos+2] != '\0') - return -1; + return -EINVAL; } else { if (str[pos+2] != ':' && str[pos+2] != '-') - return -1; + return -EINVAL; } mac->a[i] = strtol(str+pos, &p, 16); } @@ -472,13 +472,13 @@ static int parse_pci_devfn(DeviceState *dev, Property *prop, const char *str) if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) { fn = 0; if (sscanf(str, "%x%n", &slot, &n) != 1) { - return -1; + return -EINVAL; } } if (str[n] != '\0') - return -1; + return -EINVAL; if (fn > 7) - return -1; + return -EINVAL; *ptr = slot << 3 | fn; return 0; } @@ -541,6 +541,7 @@ int qdev_prop_exists(DeviceState *dev, const char *name) int qdev_prop_parse(DeviceState *dev, const char *name, const char *value) { Property *prop; + int ret; prop = qdev_prop_find(dev, name); if (!prop) { @@ -553,9 +554,19 @@ int qdev_prop_parse(DeviceState *dev, const char *name, const char *value) dev->info->name, name); return -1; } - if (prop->info->parse(dev, prop, value) != 0) { - fprintf(stderr, "property \"%s.%s\": failed to parse \"%s\"\n", - dev->info->name, name, value); + ret = prop->info->parse(dev, prop, value); + if (ret < 0) { + switch (ret) { + default: + case -EINVAL: + fprintf(stderr, "property \"%s.%s\": failed to parse \"%s\"\n", + dev->info->name, name, value); + break; + case -ENOENT: + fprintf(stderr, "property \"%s.%s\": could not find \"%s\"\n", + dev->info->name, name, value); + break; + } return -1; } return 0;