Merge "Fix a race in system properties."

#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_

#include <sys/_system_properties.h>

static int send_prop_msg(prop_msg *msg)

{

    int s;

    int r;

    s = socket_local_client(PROP_SERVICE_NAME, 

                            ANDROID_SOCKET_NAMESPACE_RESERVED,

                            SOCK_STREAM);

    if(s < 0) return -1;

    while((r = send(s, msg, sizeof(prop_msg), 0)) < 0) {

        if((errno == EINTR) || (errno == EAGAIN)) continue;

        break;

    }

    if(r == sizeof(prop_msg)) {

        r = 0;

    } else {

        r = -1;

    }

    close(s);

    return r;

}

int property_set(const char *key, const char *value)

{

    prop_msg msg;

    unsigned resp;

    if(key == 0) return -1;

    if(value == 0) value = "";

    if(strlen(key) >= PROP_NAME_MAX) return -1;

    if(strlen(value) >= PROP_VALUE_MAX) return -1;

    msg.cmd = PROP_MSG_SETPROP;

    strcpy((char*) msg.name, key);

    strcpy((char*) msg.value, value);

    return send_prop_msg(&msg);

    return __system_property_set(key, value);

}

int property_get(const char *key, char *value, const char *default_value)