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From: Andy Green <andy@warmcat.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v6 12/16] net/vdev_netvsc: readlink inputs cannot be aliased
Date: Mon, 14 May 2018 13:00:52 +0800	[thread overview]
Message-ID: <152627405227.52758.8337821922335033003.stgit@localhost.localdomain> (raw)
In-Reply-To: <152627394448.52758.15834703911138407294.stgit@localhost.localdomain>

/home/agreen/projects/dpdk/drivers/net/vdev_netvsc/
vdev_netvsc.c:335:2:error: passing argument 2 to restrict-
qualified parameter aliases with argument 1 [-Werror=restrict]
  ret = readlink(buf, buf, size);
  ^~~

Signed-off-by: Andy Green <andy@warmcat.com>
Fixes: e7dc5d7becc5 ("net/vdev_netvsc: implement core functionality")
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 drivers/net/vdev_netvsc/vdev_netvsc.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/vdev_netvsc/vdev_netvsc.c b/drivers/net/vdev_netvsc/vdev_netvsc.c
index c321a9f1b..ac26e0a3e 100644
--- a/drivers/net/vdev_netvsc/vdev_netvsc.c
+++ b/drivers/net/vdev_netvsc/vdev_netvsc.c
@@ -327,12 +327,15 @@ static int
 vdev_netvsc_sysfs_readlink(char *buf, size_t size, const char *if_name,
 			   const char *relpath)
 {
+	struct vdev_netvsc_ctx *ctx;
+	char in[RTE_MAX(sizeof(ctx->yield), 256u)];
 	int ret;
 
-	ret = snprintf(buf, size, "/sys/class/net/%s/%s", if_name, relpath);
-	if (ret == -1 || (size_t)ret >= size)
+	ret = snprintf(in, sizeof(in) - 1, "/sys/class/net/%s/%s",
+		       if_name, relpath);
+	if (ret == -1 || (size_t)ret >= sizeof(in))
 		return -ENOBUFS;
-	ret = readlink(buf, buf, size);
+	ret = readlink(in, buf, size);
 	if (ret == -1)
 		return -errno;
 	if ((size_t)ret >= size - 1)

  parent reply	other threads:[~2018-05-14  5:00 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-12  1:47 [dpdk-dev] [PATCH v5 00/16] Fix default build on gcc8.0.1 Andy Green
2018-05-12  1:47 ` [dpdk-dev] [PATCH v5 01/16] devtools/check-git: provide more generic grep pattern Andy Green
2018-05-12  1:47 ` [dpdk-dev] [PATCH v5 02/16] net/nfp: solve buffer overflow Andy Green
2018-05-12  1:47 ` [dpdk-dev] [PATCH v5 03/16] bus/pci: replace strncpy dangerous code Andy Green
2018-05-15  6:12   ` Yao, Lei A
2018-05-15  7:31     ` [dpdk-dev] [PATCH] bus/pci: correct the earlier strlcpy conversion Andy Green
2018-05-15 10:51       ` Andrew Rybchenko
2018-05-15 13:19         ` Thomas Monjalon
2018-05-15  7:32     ` [dpdk-dev] [PATCH v5 03/16] bus/pci: replace strncpy dangerous code Andy Green
2018-05-15  8:18       ` Yao, Lei A
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 04/16] bus/dpaa: solve inconsistent struct alignment Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 05/16] net/axgbe: solve broken eeprom string comp Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 06/16] net/nfp/nfpcore: solve strncpy misuse Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 07/16] net/nfp/nfpcore: off-by-one and no NUL on strncpy use Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 08/16] net/nfp: don't memcpy out of source range Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 09/16] net/qede: strncpy length constant and NUL Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 10/16] net/qede: solve broken strncpy Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 11/16] net/sfc: make sure that copied stats name is NUL-terminated Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 12/16] net/vdev_netvsc: readlink inputs cannot be aliased Andy Green
2018-05-13  7:20   ` Matan Azrad
2018-05-14  4:54     ` Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 13/16] net/vdev_netvsc: 3 x strncpy misuse Andy Green
2018-05-13  7:47   ` Matan Azrad
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 14/16] app/proc-info: sprintf overrun bug Andy Green
2018-05-12  1:48 ` [dpdk-dev] [PATCH v5 15/16] app/test-bbdev: strcpy ok for allocated string Andy Green
2018-05-12  1:49 ` [dpdk-dev] [PATCH v5 16/16] " Andy Green
2018-05-14  4:59 ` [dpdk-dev] [PATCH v6 00/16] Fix default build on gcc8.0.1 Andy Green
2018-05-14  4:59   ` [dpdk-dev] [PATCH v6 01/16] devtools/check-git: provide more generic grep pattern Andy Green
2018-05-14 16:28     ` Ferruh Yigit
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 02/16] net/nfp: solve buffer overflow Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 03/16] bus/pci: replace strncpy dangerous code Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 04/16] bus/dpaa: solve inconsistent struct alignment Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 05/16] net/axgbe: solve broken eeprom string comp Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 06/16] net/nfp/nfpcore: solve strncpy misuse Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 07/16] net/nfp/nfpcore: off-by-one and no NUL on strncpy use Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 08/16] net/nfp: don't memcpy out of source range Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 09/16] net/qede: strncpy length constant and NUL Andy Green
2018-05-14 20:16     ` Ferruh Yigit
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 10/16] net/qede: solve broken strncpy Andy Green
2018-05-14 20:20     ` Ferruh Yigit
2018-05-14 21:14       ` Ferruh Yigit
2018-05-14 23:04         ` Andy Green
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 11/16] net/sfc: make sure that copied stats name is NUL-terminated Andy Green
2018-05-14  5:00   ` Andy Green [this message]
2018-05-14  5:00   ` [dpdk-dev] [PATCH v6 13/16] net/vdev_netvsc: convert snprintf to strlcpy Andy Green
2018-05-14  5:01   ` [dpdk-dev] [PATCH v6 14/16] app/proc-info: sprintf overrun bug Andy Green
2018-05-14 20:31     ` Ferruh Yigit
2018-05-14  5:01   ` [dpdk-dev] [PATCH v6 15/16] app/test-bbdev: strcpy ok for allocated string Andy Green
2018-05-14 20:42     ` Ferruh Yigit
2018-05-14 20:56       ` Ferruh Yigit
2018-05-14 21:01         ` Ferruh Yigit
2018-05-14  5:01   ` [dpdk-dev] [PATCH v6 16/16] " Andy Green
2018-05-14 21:03     ` Ferruh Yigit
2018-05-14 21:29   ` [dpdk-dev] [PATCH v6 00/16] Fix default build on gcc8.0.1 Ferruh Yigit

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