C++ env_set函数代码示例

int last_stage_init(void)
{
#if defined(CONFIG_KMCOGE4)
	/* on KMCOGE4, the BFTIC4 is on the LBAPP2 */
	struct bfticu_iomap *bftic4 =
		(struct bfticu_iomap *)CONFIG_SYS_LBAPP2_BASE;
	u8 dip_switch = in_8((u8 *)&(bftic4->mswitch)) & BFTICU_DIPSWITCH_MASK;

	if (dip_switch != 0) {
		/* start bootloader */
		puts("DIP:   Enabled\n");
		env_set("actual_bank", "0");
	}
#endif
	set_km_env();

	return 0;
}

/* tries to use USERPROFILE environment variable to find home directory */
static int
try_userprofile_envvar_for_home(void)
{
	LOG_FUNC_ENTER;

#ifndef _WIN32
	return 0;
#else
	char home[PATH_MAX];
	const char *userprofile = env_get("USERPROFILE");
	if(userprofile == NULL || !is_dir(userprofile))
		return 0;
	snprintf(home, sizeof(home), "%s", userprofile);
	to_forward_slash(home);
	env_set(HOME_EV, home);
	return 1;
#endif
}

int main()
{
	const char *ret;
	size_t len;

	env_set("hwconfig", "key1:subkey1=value1,subkey2=value2;key2:value3;;;;"
			   "key3;:,:=;key4", 1);

	ret = hwconfig_arg("key1", &len);
	printf("%zd %.*s\n", len, (int)len, ret);
	assert(len == 29);
	assert(hwconfig_arg_cmp("key1", "subkey1=value1,subkey2=value2"));
	assert(!strncmp(ret, "subkey1=value1,subkey2=value2", len));

	ret = hwconfig_subarg("key1", "subkey1", &len);
	printf("%zd %.*s\n", len, (int)len, ret);
	assert(len == 6);
	assert(hwconfig_subarg_cmp("key1", "subkey1", "value1"));
	assert(!strncmp(ret, "value1", len));

	ret = hwconfig_subarg("key1", "subkey2", &len);
	printf("%zd %.*s\n", len, (int)len, ret);
	assert(len == 6);
	assert(hwconfig_subarg_cmp("key1", "subkey2", "value2"));
	assert(!strncmp(ret, "value2", len));

	ret = hwconfig_arg("key2", &len);
	printf("%zd %.*s\n", len, (int)len, ret);
	assert(len == 6);
	assert(hwconfig_arg_cmp("key2", "value3"));
	assert(!strncmp(ret, "value3", len));

	assert(hwconfig("key3"));
	assert(hwconfig_arg("key4", &len) == NULL);
	assert(hwconfig_arg("bogus", &len) == NULL);

	unenv_set("hwconfig");

	assert(hwconfig(NULL) == 0);
	assert(hwconfig("") == 0);
	assert(hwconfig("key3") == 0);

	return 0;
}

/* tries to use vifmrc in directory of executable file as configuration file */
static int
try_exe_directory_for_vifmrc(void)
{
	LOG_FUNC_ENTER;

#ifndef _WIN32
	return 0;
#else
	char vifmrc[PATH_MAX];
	GetModuleFileNameA(NULL, vifmrc, sizeof(vifmrc));
	to_forward_slash(vifmrc);
	*strrchr(vifmrc, '/') = '\0';
	strcat(vifmrc, "/" VIFMRC);
	if(!path_exists(vifmrc))
		return 0;
	env_set(MYVIFMRC_EV, vifmrc);
	return 1;
#endif
}

int
strm_var_set(strm_state* state, strm_string* name, strm_value val)
{
  strm_env *e;

  if (!state) {
    if (!globals) {
      globals = kh_init(env);
    }
    e = globals;
  }
  else {
    if (!state->env) {
      state->env = kh_init(env);
    }
    e = state->env;
  }
  return env_set(e, name, val);
}

int board_late_init(void)
{
	if (gpio_request(HOT_WATER_BUTTON, "hot-water-button") < 0) {
		puts("Failed to get hot-water-button pin\n");
		return -ENODEV;
	}
	gpio_direction_input(HOT_WATER_BUTTON);

	/*
	 * if hot-water-button is pressed
	 * change bootcmd
	 */
	if (gpio_get_value(HOT_WATER_BUTTON))
		return 0;

	env_set("bootcmd", "run swupdate");

	return 0;
}

/* Adds a path to PATH environment variable. */
static void
add_to_path(const char *path)
{
	const char *old_path;
	char *new_path;

	old_path = env_get("PATH");
	new_path = malloc(strlen(path) + 1 + strlen(old_path) + 1);

#ifndef _WIN32
	sprintf(new_path, "%s:%s", path, old_path);
#else
	sprintf(new_path, "%s;%s", path, old_path);
	to_back_slash(new_path);
#endif
	env_set("PATH", new_path);

	free(new_path);
}

int board_late_init(void)
{
	int ret;
	char tmp[2 * MAX_STRING_LENGTH + 2];

	omap_nand_switch_ecc(1, 8);

	if (factory_dat.asn[0] != 0)
		sprintf(tmp, "%s_%s", factory_dat.asn,
			factory_dat.comp_version);
	else
		strcpy(tmp, "QMX7.E38_4.0");

	ret = env_set("boardid", tmp);
	if (ret)
		printf("error setting board id\n");

	return 0;
}

/**
 * This test case is trying to test the following scenario:
 *	- All ethernet devices are not probed
 *	- "ethaddr" for all ethernet devices are not set
 *	- "ethact" is set to a valid ethernet device name
 *
 * With Sandbox default test configuration, all ethernet devices are
 * probed after power-up, so we have to manually create such scenario:
 *	- Remove all ethernet devices
 *	- Remove all "ethaddr" environment variables
 *	- Set "ethact" to the first ethernet device
 *
 * Do a ping test to see if anything goes wrong.
 */
static int dm_test_eth_act(struct unit_test_state *uts)
{
	struct udevice *dev[DM_TEST_ETH_NUM];
	const char *ethname[DM_TEST_ETH_NUM] = {"[email protected]", "[email protected]",
						"sbe5", "[email protected]"};
	const char *addrname[DM_TEST_ETH_NUM] = {"ethaddr", "eth5addr",
						 "eth3addr", "eth1addr"};
	char ethaddr[DM_TEST_ETH_NUM][18];
	int i;

	memset(ethaddr, '\0', sizeof(ethaddr));
	net_ping_ip = string_to_ip("1.1.2.2");

	/* Prepare the test scenario */
	for (i = 0; i < DM_TEST_ETH_NUM; i++) {
		ut_assertok(uclass_find_device_by_name(UCLASS_ETH,
						       ethname[i], &dev[i]));
		ut_assertok(device_remove(dev[i], DM_REMOVE_NORMAL));

		/* Invalidate MAC address */
		strncpy(ethaddr[i], env_get(addrname[i]), 17);
		/* Must disable access protection for ethaddr before clearing */
		env_set(".flags", addrname[i]);
		env_set(addrname[i], NULL);
	}

	/* Set ethact to "[email protected]" */
	env_set("ethact", ethname[0]);

	/* Segment fault might happen if something is wrong */
	ut_asserteq(-ENODEV, net_loop(PING));

	for (i = 0; i < DM_TEST_ETH_NUM; i++) {
		/* Restore the env */
		env_set(".flags", addrname[i]);
		env_set(addrname[i], ethaddr[i]);

		/* Probe the device again */
		ut_assertok(device_probe(dev[i]));
	}
	env_set(".flags", NULL);
	env_set("ethact", NULL);

	return 0;
}

int board_late_init(void)
{
#if (defined(CONFIG_KM_COGE5UN) | defined(CONFIG_KM_MGCOGE3UN))
	u8 dip_switch = kw_gpio_get_value(KM_FLASH_ERASE_ENABLE);

	/* if pin 1 do full erase */
	if (dip_switch != 0) {
		/* start bootloader */
		puts("DIP:   Enabled\n");
		env_set("actual_bank", "0");
	}
#endif

#if defined(CONFIG_KM_FPGA_CONFIG)
	wait_for_fpga_config();
	fpga_reset();
	toggle_eeprom_spi_bus();
#endif
	return 0;
}

/* Tries to use directory of executable file as configuration directory.
 * Returns non-zero on success, otherwise zero is returned. */
static int
try_exe_directory_for_conf(void)
{
	LOG_FUNC_ENTER;

	char exe_dir[PATH_MAX + 1];

	if(get_exe_dir(exe_dir, sizeof(exe_dir)) != 0)
	{
		return 0;
	}

	if(!path_exists_at(exe_dir, VIFMRC, DEREF))
	{
		return 0;
	}

	env_set(VIFM_EV, exe_dir);
	return 1;
}

int board_late_init(void)
{
	setup_board_eeprom_env();
	u8 val;

	/*
	 * DEV_CTRL.DEV_ON = 1 please - else palmas switches off in 8 seconds
	 * This is the POWERHOLD-in-Low behavior.
	 */
	palmas_i2c_write_u8(TPS65903X_CHIP_P1, 0xA0, 0x1);

	/*
	 * Default FIT boot on HS devices. Non FIT images are not allowed
	 * on HS devices.
	 */
	if (get_device_type() == HS_DEVICE)
		env_set("boot_fit", "1");

	/*
	 * Set the GPIO7 Pad to POWERHOLD. This has higher priority
	 * over DEV_CTRL.DEV_ON bit. This can be reset in case of
	 * PMIC Power off. So to be on the safer side set it back
	 * to POWERHOLD mode irrespective of the current state.
	 */
	palmas_i2c_read_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2,
			   &val);
	val = val | TPS65903X_PAD2_POWERHOLD_MASK;
	palmas_i2c_write_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2,
			    val);

	omap_die_id_serial();
	omap_set_fastboot_vars();

	am57x_idk_lcd_detect();

#if !defined(CONFIG_SPL_BUILD)
	board_ti_set_ethaddr(2);
#endif

	return 0;
}

int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	char *name = "unknown";

	if (is_dra72x()) {
		if (board_is_dra72x_revc_or_later())
			name = "dra72x-revc";
		else if (board_is_dra71x_evm())
			name = "dra71x";
		else
			name = "dra72x";
	} else if (is_dra76x_abz()) {
		name = "dra76x_abz";
	} else if (is_dra76x_acd()) {
		name = "dra76x_acd";
	} else {
		name = "dra7xx";
	}

	set_board_info_env(name);

	/*
	 * Default FIT boot on HS devices. Non FIT images are not allowed
	 * on HS devices.
	 */
	if (get_device_type() == HS_DEVICE)
		env_set("boot_fit", "1");

	omap_die_id_serial();
	omap_set_fastboot_vars();

	/*
	 * Hook the LDO1 regulator to EN pin. This applies only to LP8733
	 * Rest all regulators are hooked to EN Pin at reset.
	 */
	if (board_is_dra71x_evm())
		palmas_i2c_write_u8(LP873X_I2C_SLAVE_ADDR, 0x9, 0x7);
#endif
	return 0;
}

static int dm_test_eth_rotate(struct unit_test_state *uts)
{
	char ethaddr[18];
	int retval;

	/* Set target IP to mock ping */
	net_ping_ip = string_to_ip("1.1.2.2");

	/* Invalidate eth1's MAC address */
	memset(ethaddr, '\0', sizeof(ethaddr));
	strncpy(ethaddr, env_get("eth1addr"), 17);
	/* Must disable access protection for eth1addr before clearing */
	env_set(".flags", "eth1addr");
	env_set("eth1addr", NULL);

	retval = _dm_test_eth_rotate1(uts);

	/* Restore the env */
	env_set("eth1addr", ethaddr);
	env_set("ethrotate", NULL);

	if (!retval) {
		/* Invalidate eth0's MAC address */
		strncpy(ethaddr, env_get("ethaddr"), 17);
		/* Must disable access protection for ethaddr before clearing */
		env_set(".flags", "ethaddr");
		env_set("ethaddr", NULL);

		retval = _dm_test_eth_rotate2(uts);

		/* Restore the env */
		env_set("ethaddr", ethaddr);
	}
	/* Restore the env */
	env_set(".flags", NULL);

	return retval;
}

/* ensures existence of configuration directory */
static void
create_config_dir(void)
{
	LOG_FUNC_ENTER;

	/* ensure existence of configuration directory */
	if(!is_dir(cfg.config_dir))
	{
#ifndef _WIN32
		FILE *f;
		char help_file[PATH_MAX];
		char rc_file[PATH_MAX];

		if(make_dir(cfg.config_dir, 0777) != 0)
			return;

		snprintf(help_file, sizeof(help_file), "%s/" VIFM_HELP, cfg.config_dir);
		if((f = fopen(help_file, "r")) == NULL)
			create_help_file();
		else
			fclose(f);

		snprintf(rc_file, sizeof(rc_file), "%s/" VIFMRC, cfg.config_dir);
		if((f = fopen(rc_file, "r")) == NULL)
			create_rc_file();
		else
			fclose(f);

		/* This should be first start of Vifm, ensure that newly created sample
		 * vifmrc file is used right away. */
		env_set(MYVIFMRC_EV, rc_file);
#else
		if(make_dir(cfg.config_dir, 0777) != 0)
			return;
#endif

		add_default_bookmarks();
	}
}