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5fa4ff0d48
It would make the build system more simple, and the cross toolchains would do the rest to you. Toolchains like buildroot default not enable the __gnu_linux__ marco in the pre-processor will surfure from the systsm unknown problem. You should enable the marco in building toolchains or have a look on those scripts in build directory. Change-Id: I8f6af3391aa3d94d602ec8d84ba5e43839859169 Signed-off-by: Randy Li <randy.li@rock-chips.com>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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* Copyright 2015 Rockchip Electronics Co. LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if defined(__ANDROID__)
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "os_env.h"
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#include <sys/system_properties.h>
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/*
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* NOTE: __system_property_set only available after android-21
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* So the library should compiled on latest ndk
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*/
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RK_S32 os_get_env_u32(const char *name, RK_U32 *value, RK_U32 default_value)
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{
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char prop[PROP_VALUE_MAX + 1];
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int len = __system_property_get(name, prop);
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if (len > 0) {
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char *endptr;
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int base = (prop[0] == '0' && prop[1] == 'x') ? (16) : (10);
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errno = 0;
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*value = strtoul(prop, &endptr, base);
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if (errno || (prop == endptr)) {
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errno = 0;
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*value = default_value;
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}
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} else {
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*value = default_value;
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}
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return 0;
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}
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RK_S32 os_get_env_str(const char *name, char **value, char *default_value)
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{
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// use unsigned char to avoid warnning
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static unsigned char env_str[2][PROP_VALUE_MAX + 1];
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static RK_U32 env_idx = 0;
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char *prop = (char *)env_str[env_idx];
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int len = __system_property_get(name, prop);
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if (len > 0) {
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*value = prop;
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env_idx = !env_idx;
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} else {
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*value = default_value;
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}
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return 0;
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}
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RK_S32 os_set_env_u32(const char *name, RK_U32 value)
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{
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char buf[PROP_VALUE_MAX + 1 + 2];
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snprintf(buf, sizeof(buf), "0x%x", value);
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int len = __system_property_set(name, buf);
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return (len) ? (0) : (-1);
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}
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RK_S32 os_set_env_str(const char *name, char *value)
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{
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int len = __system_property_set(name, value);
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return (len) ? (0) : (-1);
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}
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#endif
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