| /* |
| * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| * |
| * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| */ |
| |
| #include <limits.h> |
| #include <sys/time.h> |
| #include <sys/timex.h> |
| #include <errno.h> |
| |
| |
| #define MAX_SEC (LONG_MAX / 1000000L - 2) |
| #define MIN_SEC (LONG_MIN / 1000000L + 2) |
| |
| #ifndef MOD_OFFSET |
| #define modes mode |
| #endif |
| |
| int |
| adjtime(const struct timeval * itv, struct timeval * otv) |
| { |
| struct timex tntx; |
| |
| if (itv) |
| { |
| struct timeval tmp; |
| |
| /* We will do some check here. */ |
| tmp.tv_sec = itv->tv_sec + itv->tv_usec / 1000000L; |
| tmp.tv_usec = itv->tv_usec % 1000000L; |
| if (tmp.tv_sec > MAX_SEC || tmp.tv_sec < MIN_SEC) |
| { |
| __set_errno(EINVAL); |
| return -1; |
| } |
| tntx.offset = tmp.tv_usec + tmp.tv_sec * 1000000L; |
| tntx.modes = ADJ_OFFSET_SINGLESHOT; |
| } |
| else |
| { |
| tntx.modes = 0; |
| } |
| if (adjtimex(&tntx) < 0) return -1; |
| if (otv) { |
| if (tntx.offset < 0) |
| { |
| otv->tv_usec = -(-tntx.offset % 1000000); |
| otv->tv_sec = -(-tntx.offset / 1000000); |
| } |
| else |
| { |
| otv->tv_usec = tntx.offset % 1000000; |
| otv->tv_sec = tntx.offset / 1000000; |
| } |
| } |
| return 0; |
| } |