Function unsetenv

co_hook_sys_call.cpp:804–835

	return g_sys_setenv_func( n,value,overwrite );
}
int unsetenv(const char *n)
{
	HOOK_SYS_FUNC( unsetenv )
	if( co_is_enable_sys_hook() && g_co_sysenv.data )
	{
		stCoRoutine_t *self = co_self();
		if( self )
		{
			if( !self->pvEnv )
			{
				self->pvEnv = dup_co_sysenv_arr( &g_co_sysenv );
			}
			stCoSysEnvArr_t *arr = (stCoSysEnvArr_t*)(self->pvEnv);

			stCoSysEnv_t name = { (char*)n,0 };

			stCoSysEnv_t *e = (stCoSysEnv_t*)bsearch( &name,arr->data,arr->cnt,sizeof(name),co_sysenv_comp );

			if( e )
			{
				if( e->value )
				{
					free( e->value );
					e->value = 0;
				}
				return 0;
			}
		}

	}
	return g_sys_unsetenv_func( n );
}
char *getenv( const char *n )
{
	HOOK_SYS_FUNC( getenv )