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Date: Tue, 1 Nov 2011 23:23:46 +0000
From: Ben Hutchings <bhutchings@...arflare.com>
To: <netdev@...r.kernel.org>
CC: <linux-net-drivers@...arflare.com>
Subject: [PATCH ethtool 20/21] Run tests in-process
Change definition of main() and use of exit() so that ethtool commands
can be tested without starting a new process. This will allow deeper
testing that covers ioctl requests and responses.
Fix the obvious socket and memory leaks.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
Makefile.am | 6 +---
ethtool.c | 25 +++++++++++++-------
internal.h | 5 ++++
test-cmdline.c | 6 +++++
test-common.c | 65 +++++++++++++++++++++++++++++++------------------------
5 files changed, 66 insertions(+), 41 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index 4b0eb17..cfc2b79 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -12,11 +12,9 @@ ethtool_SOURCES = ethtool.c ethtool-copy.h internal.h \
rxclass.c
TESTS = test-cmdline
-check_PROGRAMS = test-cmdline test-one-cmdline
-test_cmdline_SOURCES = test-cmdline.c test-common.c
+check_PROGRAMS = test-cmdline
+test_cmdline_SOURCES = test-cmdline.c test-common.c $(ethtool_SOURCES)
test_cmdline_CFLAGS = -DTEST_ETHTOOL
-test_one_cmdline_SOURCES = $(ethtool_SOURCES)
-test_one_cmdline_CFLAGS = -DTEST_ETHTOOL
dist-hook:
cp $(top_srcdir)/ethtool.spec $(distdir)
diff --git a/ethtool.c b/ethtool.c
index 8e757e9..f192376 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -259,7 +259,7 @@ static void exit_bad_args(void)
fprintf(stderr,
"ethtool: bad command line argument(s)\n"
"For more information run ethtool -h\n");
- exit(1);
+ ethtool_exit(1);
}
static int show_usage(struct cmd_context *ctx)
@@ -2754,6 +2754,7 @@ static int do_grxfhindir(struct cmd_context *ctx)
err = send_ioctl(ctx, indir);
if (err < 0) {
perror("Cannot get RX flow hash indirection table");
+ free(indir);
return 103;
}
@@ -2766,6 +2767,8 @@ static int do_grxfhindir(struct cmd_context *ctx)
if (i % 8 == 7)
fputc('\n', stdout);
}
+
+ free(indir);
return 0;
}
@@ -2817,14 +2820,16 @@ static int do_srxfhindir(struct cmd_context *ctx)
if (sum == 0) {
fprintf(stderr,
"At least one weight must be non-zero\n");
- exit(1);
+ free(indir);
+ ethtool_exit(1);
}
if (sum > indir->size) {
fprintf(stderr,
"Total weight exceeds the size of the "
"indirection table\n");
- exit(1);
+ free(indir);
+ ethtool_exit(1);
}
j = -1;
@@ -2844,6 +2849,7 @@ static int do_srxfhindir(struct cmd_context *ctx)
return 105;
}
+ free(indir);
return 0;
}
@@ -3199,18 +3205,15 @@ static int do_setfwdump(struct cmd_context *ctx)
return 0;
}
+#ifndef TEST_ETHTOOL
int send_ioctl(struct cmd_context *ctx, void *cmd)
{
-#ifndef TEST_ETHTOOL
ctx->ifr.ifr_data = cmd;
return ioctl(ctx->fd, SIOCETHTOOL, &ctx->ifr);
-#else
- /* If we get this far then parsing succeeded */
- exit(0);
-#endif
}
+#endif
-int main(int argc, char **argp, char **envp)
+int ethtool_main(int argc, char **argp)
{
int (*func)(struct cmd_context *);
int want_device;
@@ -3265,12 +3268,16 @@ opt_found:
memset(&ctx.ifr, 0, sizeof(ctx.ifr));
strcpy(ctx.ifr.ifr_name, ctx.devname);
+#ifndef TEST_ETHTOOL
/* Open control socket. */
ctx.fd = socket(AF_INET, SOCK_DGRAM, 0);
if (ctx.fd < 0) {
perror("Cannot get control socket");
return 70;
}
+#else
+ ctx.fd = -1;
+#endif
} else {
ctx.fd = -1;
}
diff --git a/internal.h b/internal.h
index cb126b3..8505396 100644
--- a/internal.h
+++ b/internal.h
@@ -98,7 +98,12 @@ struct cmd_context {
};
#ifdef TEST_ETHTOOL
+int ethtool_main(int argc, char **argp);
+void ethtool_exit(int rc) __attribute__((noreturn));
int test_cmdline(const char *args);
+#else
+#define ethtool_main(...) main(__VA_ARGS__)
+#define ethtool_exit(rc) exit(rc)
#endif
int send_ioctl(struct cmd_context *ctx, void *cmd);
diff --git a/test-cmdline.c b/test-cmdline.c
index 7dd3b7c..df1aeed 100644
--- a/test-cmdline.c
+++ b/test-cmdline.c
@@ -213,6 +213,12 @@ static struct test_case {
{ 1, "-0" },
};
+int send_ioctl(struct cmd_context *ctx, void *cmd)
+{
+ /* If we get this far then parsing succeeded */
+ ethtool_exit(0);
+}
+
int main(void)
{
struct test_case *tc;
diff --git a/test-common.c b/test-common.c
index 4ea84c8..5a06ac7 100644
--- a/test-common.c
+++ b/test-common.c
@@ -7,22 +7,27 @@
* by the Free Software Foundation, incorporated herein by reference.
*/
+#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
#include <sys/fcntl.h>
-#include <sys/wait.h>
#include <unistd.h>
#include "internal.h"
+static jmp_buf test_return;
+
+void ethtool_exit(int rc)
+{
+ longjmp(test_return, rc + 1);
+}
+
int test_cmdline(const char *args)
{
int argc, i;
char **argv;
const char *arg;
size_t len;
- pid_t pid;
- int dev_null;
- int status;
+ int dev_null = -1, old_stdout = -1, old_stderr = -1;
int rc;
/* Convert line to argv */
@@ -56,35 +61,39 @@ int test_cmdline(const char *args)
}
fflush(NULL);
- pid = fork();
-
- /* Child */
- if (pid == 0) {
- dup2(dev_null, STDIN_FILENO);
- if (!getenv("ETHTOOL_TEST_VERBOSE")) {
- dup2(dev_null, STDOUT_FILENO);
- dup2(dev_null, STDERR_FILENO);
+ dup2(dev_null, STDIN_FILENO);
+ if (!getenv("ETHTOOL_TEST_VERBOSE")) {
+ old_stdout = dup(STDOUT_FILENO);
+ if (old_stdout < 0) {
+ perror("dup stdout");
+ rc = -1;
+ goto out;
}
- execv("./test-one-cmdline", argv);
- _exit(126);
+ dup2(dev_null, STDOUT_FILENO);
+ old_stderr = dup(STDERR_FILENO);
+ if (old_stderr < 0) {
+ perror("dup stderr");
+ rc = -1;
+ goto out;
+ }
+ dup2(dev_null, STDERR_FILENO);
}
- /* Parent */
- if (pid < 0) {
- perror("fork");
- close(dev_null);
- rc = -1;
- goto out;
- }
- close(dev_null);
- if (waitpid(pid, &status, 0) < 0) {
- perror("waitpid");
- rc = -1;
- goto out;
- }
- rc = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
+ rc = setjmp(test_return);
+ rc = rc ? rc - 1 : ethtool_main(argc, argv);
out:
+ fflush(NULL);
+ if (old_stderr >= 0) {
+ dup2(old_stderr, STDERR_FILENO);
+ close(old_stderr);
+ }
+ if (old_stdout >= 0) {
+ dup2(old_stdout, STDOUT_FILENO);
+ close(old_stdout);
+ }
+ if (dev_null >= 0)
+ close(dev_null);
for (i = 0; i < argc; i++)
free(argv[i]);
free(argv);
--
1.7.4.4
--
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
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