test-common.c - pub/scm/linux/kernel/git/mkubecek/ethtool - Git at Google

 /****************************************************************************
  * Common test functions for ethtool
  * Copyright 2011 Solarflare Communications Inc.
  *
  * Partly derived from kernel <linux/list.h>.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published
  * by the Free Software Foundation, incorporated herein by reference.
  */

 #include <assert.h>
 #include <errno.h>
 #include <setjmp.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/fcntl.h>
 #include <unistd.h>
 #define TEST_NO_WRAPPERS
 #include "internal.h"

 /* List utilities */

 struct list_head {
 	struct list_head *next, *prev;
 };

 #define LIST_HEAD_INIT(name) { &(name), &(name) }

 static void init_list_head(struct list_head *list)
 {
 	list->next = list;
 	list->prev = list;
 }

 static void list_add(struct list_head *new, struct list_head *head)
 {
 	head->next->prev = new;
 	new->next = head->next;
 	new->prev = head;
 	head->next = new;
 }

 static void list_del(struct list_head *entry)
 {
 	entry->next->prev = entry->prev;
 	entry->prev->next = entry->next;
 	entry->next = NULL;
 	entry->prev = NULL;
 }

 #define list_for_each_safe(pos, n, head) \
 	for (pos = (head)->next, n = pos->next; pos != (head); \
 		pos = n, n = pos->next)

 /* Free memory at end of test */

 static struct list_head malloc_list = LIST_HEAD_INIT(malloc_list);

 void *test_malloc(size_t size)
 {
 	struct list_head *block = malloc(sizeof(*block) + size);

 	if (!block)
 		return NULL;
 	list_add(block, &malloc_list);
 	return block + 1;
 }

 void *test_calloc(size_t nmemb, size_t size)
 {
 	void *ptr = test_malloc(nmemb * size);

 	if (ptr)
 		memset(ptr, 0, nmemb * size);
 	return ptr;
 }

 char *test_strdup(const char *s)
 {
 	size_t size = strlen(s) + 1;
 	char *dup = test_malloc(size);

 	if (dup)
 		memcpy(dup, s, size);
 	return dup;
 }

 void test_free(void *ptr)
 {
 	struct list_head *block;

 	if (!ptr)
 		return;
 	block = (struct list_head *)ptr - 1;
 	list_del(block);
 	free(block);
 }

 void *test_realloc(void *ptr, size_t size)
 {
 	struct list_head *block = NULL;

 	if (ptr) {
 		block = (struct list_head *)ptr - 1;
 		list_del(block);
 	}
 	block = realloc(block, sizeof(*block) + size);
 	if (!block)
 		return NULL;
 	list_add(block, &malloc_list);
 	return block + 1;
 }

 static void test_free_all(void)
 {
 	struct list_head *block, *next;

 	list_for_each_safe(block, next, &malloc_list)
 		free(block);
 	init_list_head(&malloc_list);
 }

 /* Close files at end of test */

 struct file_node {
 	struct list_head link;
 	FILE *fh;
 	int fd;
 };

 static struct list_head file_list = LIST_HEAD_INIT(file_list);

 int test_open(const char *pathname, int flag, ...)
 {
 	struct file_node *node;
 	mode_t mode;

 	if (flag & O_CREAT) {
 		va_list ap;
 		va_start(ap, flag);
 		mode = va_arg(ap, mode_t);
 		va_end(ap);
 	} else {
 		mode = 0;
 	}

 	node = malloc(sizeof(*node));
 	if (!node)
 		return -1;

 	node->fd = open(pathname, flag, mode);
 	if (node->fd < 0) {
 		free(node);
 		return -1;
 	}

 	node->fh = NULL;
 	list_add(&node->link, &file_list);
 	return node->fd;
 }

 int test_socket(int domain, int type, int protocol)
 {
 	struct file_node *node;

 	node = malloc(sizeof(*node));
 	if (!node)
 		return -1;

 	node->fd = socket(domain, type, protocol);
 	if (node->fd < 0) {
 		free(node);
 		return -1;
 	}

 	node->fh = NULL;
 	list_add(&node->link, &file_list);
 	return node->fd;
 }

 int test_close(int fd)
 {
 	struct list_head *head, *next;

 	if (fd >= 0) {
 		list_for_each_safe(head, next, &file_list) {
 			if (((struct file_node *)head)->fd == fd) {
 				list_del(head);
 				free(head);
 				break;
 			}
 		}
 	}

 	return close(fd);
 }

 FILE *test_fopen(const char *path, const char *mode)
 {
 	struct file_node *node;

 	node = malloc(sizeof(*node));
 	if (!node)
 		return NULL;

 	node->fh = fopen(path, mode);
 	if (!node->fh) {
 		free(node);
 		return NULL;
 	}

 	node->fd = -1;
 	list_add(&node->link, &file_list);
 	return node->fh;
 }

 int test_fclose(FILE *fh)
 {
 	struct list_head *head, *next;

 	assert(fh);

 	list_for_each_safe(head, next, &file_list) {
 		if (((struct file_node *)head)->fh == fh) {
 			list_del(head);
 			free(head);
 			break;
 		}
 	}

 	return fclose(fh);
 }

 static void test_close_all(void)
 {
 	struct list_head *head, *next;
 	struct file_node *node;

 	list_for_each_safe(head, next, &file_list) {
 		node = (struct file_node *)head;
 		if (node->fh)
 			fclose(node->fh);
 		else
 			close(node->fd);
 		free(node);
 	}
 	init_list_head(&file_list);
 }

 /* Wrap test main function */

 static jmp_buf test_return;
 static FILE *orig_stderr;

 void test_exit(int rc)
 {
 	longjmp(test_return, rc + 1);
 }

 int test_ioctl(const struct cmd_expect *expect, void *cmd)
 {
 	int rc;

 	if (!expect->cmd || *(u32 *)cmd != *(const u32 *)expect->cmd) {
 		/* We have no idea how long this command structure is */
 		fprintf(orig_stderr, "Unexpected ioctl: cmd=%#10x\n",
 			*(u32 *)cmd);
 		return TEST_IOCTL_MISMATCH;
 	}

 	if (memcmp(cmd, expect->cmd, expect->cmd_len)) {
 		fprintf(orig_stderr, "Expected ioctl structure:\n");
 		dump_hex(orig_stderr, expect->cmd, expect->cmd_len, 0);
 		fprintf(orig_stderr, "Actual ioctl structure:\n");
 		dump_hex(orig_stderr, cmd, expect->cmd_len, 0);
 		return TEST_IOCTL_MISMATCH;
 	}

 	if (expect->resp)
 		memcpy(cmd, expect->resp, expect->resp_len);
 	rc = expect->rc;

 	/* Convert kernel return code according to libc convention */
 	if (rc >= 0) {
 		return rc;
 	} else {
 		errno = -rc;
 		return -1;
 	}
 }

 int test_cmdline(const char *args)
 {
 	int argc, i;
 	char **argv;
 	const char *arg;
 	size_t len;
 	int dev_null = -1, orig_stdout_fd = -1, orig_stderr_fd = -1;
 	int rc;

 	/* Convert line to argv */
 	argc = 1;
 	arg = args;
 	for (;;) {
 		len = strcspn(arg, " ");
 		if (len == 0)
 			break;
 		argc++;
 		if (arg[len] == 0)
 			break;
 		arg += len + 1;
 	}
 	argv = test_calloc(argc + 1, sizeof(argv[0]));
 	argv[0] = test_strdup("ethtool");
 	arg = args;
 	for (i = 1; i < argc; i++) {
 		len = strcspn(arg, " ");
 		argv[i] = test_malloc(len + 1);
 		memcpy(argv[i], arg, len);
 		argv[i][len] = 0;
 		arg += len + 1;
 	}

 	dev_null = open("/dev/null", O_RDWR);
 	if (dev_null < 0) {
 		perror("open /dev/null");
 		rc = -1;
 		goto out;
 	}

 	fflush(NULL);
 	dup2(dev_null, STDIN_FILENO);
 	if (getenv("TEST_TEST_VERBOSE")) {
 		orig_stderr = stderr;
 	} else {
 		orig_stdout_fd = dup(STDOUT_FILENO);
 		if (orig_stdout_fd < 0) {
 			perror("dup stdout");
 			rc = -1;
 			goto out;
 		}
 		dup2(dev_null, STDOUT_FILENO);
 		orig_stderr_fd = dup(STDERR_FILENO);
 		if (orig_stderr_fd < 0) {
 			perror("dup stderr");
 			rc = -1;
 			goto out;
 		}
 		orig_stderr = fdopen(orig_stderr_fd, "w");
 		if (orig_stderr == NULL) {
 			perror("fdopen orig_stderr_fd");
 			rc = -1;
 			goto out;
 		}
 		dup2(dev_null, STDERR_FILENO);
 	}

 	rc = setjmp(test_return);
 	rc = rc ? rc - 1 : test_main(argc, argv);

 out:
 	fflush(NULL);
 	if (orig_stderr_fd >= 0) {
 		dup2(orig_stderr_fd, STDERR_FILENO);
 		if (orig_stderr)
 			fclose(orig_stderr);
 		else
 			close(orig_stderr_fd);
 	}
 	orig_stderr = NULL;
 	if (orig_stdout_fd >= 0) {
 		dup2(orig_stdout_fd, STDOUT_FILENO);
 		close(orig_stdout_fd);
 	}
 	if (dev_null >= 0)
 		close(dev_null);

 	test_free_all();
 	test_close_all();
 	return rc;
 }
	/****************************************************************************
	* Common test functions for ethtool
	* Copyright 2011 Solarflare Communications Inc.
	*
	* Partly derived from kernel <linux/list.h>.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published
	* by the Free Software Foundation, incorporated herein by reference.
	*/

	#include <assert.h>
	#include <errno.h>
	#include <setjmp.h>
	#include <stdarg.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/fcntl.h>
	#include <unistd.h>
	#define TEST_NO_WRAPPERS
	#include "internal.h"

	/* List utilities */

	struct list_head {
	struct list_head next, prev;
	};

	#define LIST_HEAD_INIT(name) { &(name), &(name) }

	static void init_list_head(struct list_head *list)
	{
	list->next = list;
	list->prev = list;
	}

	static void list_add(struct list_head new, struct list_head head)
	{
	head->next->prev = new;
	new->next = head->next;
	new->prev = head;
	head->next = new;
	}

	static void list_del(struct list_head *entry)
	{
	entry->next->prev = entry->prev;
	entry->prev->next = entry->next;
	entry->next = NULL;
	entry->prev = NULL;
	}

	#define list_for_each_safe(pos, n, head) \
	for (pos = (head)->next, n = pos->next; pos != (head); \
	pos = n, n = pos->next)

	/* Free memory at end of test */

	static struct list_head malloc_list = LIST_HEAD_INIT(malloc_list);

	void *test_malloc(size_t size)
	{
	struct list_head block = malloc(sizeof(block) + size);

	if (!block)
	return NULL;
	list_add(block, &malloc_list);
	return block + 1;
	}

	void *test_calloc(size_t nmemb, size_t size)
	{
	void ptr = test_malloc(nmemb size);

	if (ptr)
	memset(ptr, 0, nmemb * size);
	return ptr;
	}

	char test_strdup(const char s)
	{
	size_t size = strlen(s) + 1;
	char *dup = test_malloc(size);

	if (dup)
	memcpy(dup, s, size);
	return dup;
	}

	void test_free(void *ptr)
	{
	struct list_head *block;

	if (!ptr)
	return;
	block = (struct list_head *)ptr - 1;
	list_del(block);
	free(block);
	}

	void test_realloc(void ptr, size_t size)
	{
	struct list_head *block = NULL;

	if (ptr) {
	block = (struct list_head *)ptr - 1;
	list_del(block);
	}
	block = realloc(block, sizeof(*block) + size);
	if (!block)
	return NULL;
	list_add(block, &malloc_list);
	return block + 1;
	}

	static void test_free_all(void)
	{
	struct list_head block, next;

	list_for_each_safe(block, next, &malloc_list)
	free(block);
	init_list_head(&malloc_list);
	}

	/* Close files at end of test */

	struct file_node {
	struct list_head link;
	FILE *fh;
	int fd;
	};

	static struct list_head file_list = LIST_HEAD_INIT(file_list);

	int test_open(const char *pathname, int flag, ...)
	{
	struct file_node *node;
	mode_t mode;

	if (flag & O_CREAT) {
	va_list ap;
	va_start(ap, flag);
	mode = va_arg(ap, mode_t);
	va_end(ap);
	} else {
	mode = 0;
	}

	node = malloc(sizeof(*node));
	if (!node)
	return -1;

	node->fd = open(pathname, flag, mode);
	if (node->fd < 0) {
	free(node);
	return -1;
	}

	node->fh = NULL;
	list_add(&node->link, &file_list);
	return node->fd;
	}

	int test_socket(int domain, int type, int protocol)
	{
	struct file_node *node;

	node = malloc(sizeof(*node));
	if (!node)
	return -1;

	node->fd = socket(domain, type, protocol);
	if (node->fd < 0) {
	free(node);
	return -1;
	}

	node->fh = NULL;
	list_add(&node->link, &file_list);
	return node->fd;
	}

	int test_close(int fd)
	{
	struct list_head head, next;

	if (fd >= 0) {
	list_for_each_safe(head, next, &file_list) {
	if (((struct file_node *)head)->fd == fd) {
	list_del(head);
	free(head);
	break;
	}
	}
	}

	return close(fd);
	}

	FILE test_fopen(const char path, const char *mode)
	{
	struct file_node *node;

	node = malloc(sizeof(*node));
	if (!node)
	return NULL;

	node->fh = fopen(path, mode);
	if (!node->fh) {
	free(node);
	return NULL;
	}

	node->fd = -1;
	list_add(&node->link, &file_list);
	return node->fh;
	}

	int test_fclose(FILE *fh)
	{
	struct list_head head, next;

	assert(fh);

	list_for_each_safe(head, next, &file_list) {
	if (((struct file_node *)head)->fh == fh) {
	list_del(head);
	free(head);
	break;
	}
	}

	return fclose(fh);
	}

	static void test_close_all(void)
	{
	struct list_head head, next;
	struct file_node *node;

	list_for_each_safe(head, next, &file_list) {
	node = (struct file_node *)head;
	if (node->fh)
	fclose(node->fh);
	else
	close(node->fd);
	free(node);
	}
	init_list_head(&file_list);
	}

	/* Wrap test main function */

	static jmp_buf test_return;
	static FILE *orig_stderr;

	void test_exit(int rc)
	{
	longjmp(test_return, rc + 1);
	}

	int test_ioctl(const struct cmd_expect expect, void cmd)
	{
	int rc;

	if (!expect->cmd \|\| (u32 )cmd != (const u32 )expect->cmd) {
	/* We have no idea how long this command structure is */
	fprintf(orig_stderr, "Unexpected ioctl: cmd=%#10x\n",
	(u32 )cmd);
	return TEST_IOCTL_MISMATCH;
	}

	if (memcmp(cmd, expect->cmd, expect->cmd_len)) {
	fprintf(orig_stderr, "Expected ioctl structure:\n");
	dump_hex(orig_stderr, expect->cmd, expect->cmd_len, 0);
	fprintf(orig_stderr, "Actual ioctl structure:\n");
	dump_hex(orig_stderr, cmd, expect->cmd_len, 0);
	return TEST_IOCTL_MISMATCH;
	}

	if (expect->resp)
	memcpy(cmd, expect->resp, expect->resp_len);
	rc = expect->rc;

	/* Convert kernel return code according to libc convention */
	if (rc >= 0) {
	return rc;
	} else {
	errno = -rc;
	return -1;
	}
	}

	int test_cmdline(const char *args)
	{
	int argc, i;
	char **argv;
	const char *arg;
	size_t len;
	int dev_null = -1, orig_stdout_fd = -1, orig_stderr_fd = -1;
	int rc;

	/* Convert line to argv */
	argc = 1;
	arg = args;
	for (;;) {
	len = strcspn(arg, " ");
	if (len == 0)
	break;
	argc++;
	if (arg[len] == 0)
	break;
	arg += len + 1;
	}
	argv = test_calloc(argc + 1, sizeof(argv[0]));
	argv[0] = test_strdup("ethtool");
	arg = args;
	for (i = 1; i < argc; i++) {
	len = strcspn(arg, " ");
	argv[i] = test_malloc(len + 1);
	memcpy(argv[i], arg, len);
	argv[i][len] = 0;
	arg += len + 1;
	}

	dev_null = open("/dev/null", O_RDWR);
	if (dev_null < 0) {
	perror("open /dev/null");
	rc = -1;
	goto out;
	}

	fflush(NULL);
	dup2(dev_null, STDIN_FILENO);
	if (getenv("TEST_TEST_VERBOSE")) {
	orig_stderr = stderr;
	} else {
	orig_stdout_fd = dup(STDOUT_FILENO);
	if (orig_stdout_fd < 0) {
	perror("dup stdout");
	rc = -1;
	goto out;
	}
	dup2(dev_null, STDOUT_FILENO);
	orig_stderr_fd = dup(STDERR_FILENO);
	if (orig_stderr_fd < 0) {
	perror("dup stderr");
	rc = -1;
	goto out;
	}
	orig_stderr = fdopen(orig_stderr_fd, "w");
	if (orig_stderr == NULL) {
	perror("fdopen orig_stderr_fd");
	rc = -1;
	goto out;
	}
	dup2(dev_null, STDERR_FILENO);
	}

	rc = setjmp(test_return);
	rc = rc ? rc - 1 : test_main(argc, argv);

	out:
	fflush(NULL);
	if (orig_stderr_fd >= 0) {
	dup2(orig_stderr_fd, STDERR_FILENO);
	if (orig_stderr)
	fclose(orig_stderr);
	else
	close(orig_stderr_fd);
	}
	orig_stderr = NULL;
	if (orig_stdout_fd >= 0) {
	dup2(orig_stdout_fd, STDOUT_FILENO);
	close(orig_stdout_fd);
	}
	if (dev_null >= 0)
	close(dev_null);

	test_free_all();
	test_close_all();
	return rc;
	}