From: Gaetan Rivet <gaetan.rivet@6wind.com>
To: dev@dpdk.org
Cc: Matan Azrad <matan@mellanox.com>,
Gaetan Rivet <gaetan.rivet@6wind.com>,
stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net/failsafe: fix errno set on command execution
Date: Wed, 30 Aug 2017 17:59:54 +0200 [thread overview]
Message-ID: <1504108794-21917-1-git-send-email-gaetan.rivet@6wind.com> (raw)
In-Reply-To: <1504018748-4766-1-git-send-email-matan@mellanox.com>
This is unacceptable behavior.
Fixes: a0194d828100 ("net/failsafe: add flexible device definition")
Fixes: 35ffe4208140 ("net/failsafe: fix missing pclose after popen")
Cc: stable@dpdk.org
Reported-by: Matan Azrad <matan@mellanox.com>
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
drivers/net/failsafe/failsafe_args.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/drivers/net/failsafe/failsafe_args.c b/drivers/net/failsafe/failsafe_args.c
index 1f22416..cc29c5e 100644
--- a/drivers/net/failsafe/failsafe_args.c
+++ b/drivers/net/failsafe/failsafe_args.c
@@ -115,8 +115,7 @@ fs_execute_cmd(struct sub_device *sdev, char *cmdline)
/* store possible newline as well */
char output[DEVARGS_MAXLEN + 1];
size_t len;
- int old_err;
- int ret, pclose_ret;
+ int ret;
RTE_ASSERT(cmdline != NULL || sdev->cmdline != NULL);
if (sdev->cmdline == NULL) {
@@ -135,12 +134,10 @@ fs_execute_cmd(struct sub_device *sdev, char *cmdline)
sdev->cmdline[i] = ' ';
}
DEBUG("'%s'", sdev->cmdline);
- old_err = errno;
fp = popen(sdev->cmdline, "r");
if (fp == NULL) {
- ret = errno;
+ ret = -errno;
ERROR("popen: %s", strerror(errno));
- errno = old_err;
return ret;
}
/* We only read one line */
@@ -155,18 +152,11 @@ fs_execute_cmd(struct sub_device *sdev, char *cmdline)
goto ret_pclose;
}
ret = fs_parse_device(sdev, output);
- if (ret) {
+ if (ret)
ERROR("Parsing device '%s' failed", output);
- goto ret_pclose;
- }
ret_pclose:
- pclose_ret = pclose(fp);
- if (pclose_ret) {
- pclose_ret = errno;
+ if (pclose(fp) == -1)
ERROR("pclose: %s", strerror(errno));
- errno = old_err;
- return pclose_ret;
- }
return ret;
}
--
2.1.4
next prev parent reply other threads:[~2017-08-30 16:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-29 14:59 [dpdk-dev] [PATCH] net/failsafe: fix exec parameter parsing error flow Matan Azrad
2017-08-29 16:33 ` Gaëtan Rivet
2017-08-30 6:11 ` Matan Azrad
2017-08-30 14:24 ` Gaëtan Rivet
2017-08-30 15:32 ` Matan Azrad
2017-08-30 15:59 ` Gaetan Rivet [this message]
2017-09-01 15:59 ` [dpdk-dev] [dpdk-stable] [PATCH] net/failsafe: fix errno set on command execution Ferruh Yigit
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