- adds several config-options to allow for turning off certain features

  like
  o UCLIBC_HAS_GNU_ERROR
  o UCLIBC_HAS_BSD_ERR
  o UCLIBC_HAS_PTY
  o UCLIBC_HAS_GETPT (1)
  o UCLIBC_SYSCALL_STUBS
  o UCLIBC_SYSCALL_STUB_WARNING
  o UCLIBC_LINUX_SPECIFIC (2)
  o UCLIBC_BSD_SPECIFIC (3)
  o UCLIBC_NTP_LEGACY (4)
  o UCLIBC_SV4_DEPRECATED (5)
  o UCLIBC_HAVE_REALTIME (6)
  o UCLIBC_HAVE_ADVANCED_REALTIME (7)
  o UCLIBC_HAVE_EPOLL (8)
  o UCLIBC_HAVE_XATTR (9)
  o UCLIBC_HAVE_PROFILING (10)

(1) make non-standard getpt optional and implement standard posix_openpt
(2) fstatfs(), inotify_*(), ioperm(), iopl(), madvise(), modify_ldt(),
    personality()
    ppoll(), setresuid()
(3) mincore(), getdomainname(), setdomainname()
(4) ntp_adjtime(), ntp_gettime() aliases
(5) ustat() [use statfs(2) in your code instead]
(6) All marked as "(REALTIME)" in SUSv3
(7) All marked as "(ADVANCED REALTIME)" in SUSv3
(8) epoll_create(), epoll_ctl(), epoll_wait()
(9) all Extended Attributes
(10) helpers for gcc's -finstrument-functions

- Fixes _dl_exit()
- Implements sleep(3) for !UCLIBC_HAVE_REALTIME
- Implements usleep(3) for !UCLIBC_HAVE_REALTIME
- adds #warning about incorrect posix_fadvise{,64}()
- removes unused and unwanted uselib()

Net outcome is that an allnoconfig with HAVE_SHARED is now about 88k instead 
of formerly 130k.

1 files changed, 6 insertions, 3 deletions

diff --git a/include/unistd.h b/include/unistd.h
index 3b72b8222..e0219e770 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -703,10 +703,12 @@ extern int getresuid (__uid_t *__ruid, __uid_t *__euid, __uid_t *__suid)
 extern int getresgid (__gid_t *__rgid, __gid_t *__egid, __gid_t *__sgid)
      __THROW;
 
+#if defined __UCLIBC_LINUX_SPECIFIC__
 /* Set the real user ID, effective user ID, and saved-set user ID,
    of the calling process to RUID, EUID, and SUID, respectively.  */
 extern int setresuid (__uid_t __ruid, __uid_t __euid, __uid_t __suid)
      __THROW;
+#endif
 
 /* Set the real group ID, effective group ID, and saved-set group ID,
    of the calling process to RGID, EGID, and SGID, respectively.  */
@@ -857,7 +859,7 @@ extern int sethostname (__const char *__name, size_t __len)
    This call is restricted to the super-user.  */
 extern int sethostid (long int __id) __THROW __wur;
 
-
+#if defined __UCLIBC_BSD_SPECIFIC__
 /* Get and set the NIS (aka YP) domain name, if any.
    Called just like `gethostname' and `sethostname'.
    The NIS domain name is usually the empty string when not using NIS.  */
@@ -865,7 +867,7 @@ extern int getdomainname (char *__name, size_t __len)
      __THROW __nonnull ((1)) __wur;
 extern int setdomainname (__const char *__name, size_t __len)
      __THROW __nonnull ((1)) __wur;
-
+#endif
 
 /* Revoke access permissions to all processes currently communicating
    with the control terminal, and then send a SIGHUP signal to the process
@@ -1064,7 +1066,8 @@ extern int lockf64 (int __fd, int __cmd, __off64_t __len) __wur;
        __result; }))
 #endif
 
-#if defined __USE_POSIX199309 || defined __USE_UNIX98
+#if (defined __USE_POSIX199309 || defined __USE_UNIX98) \
+	&& defined __UCLIBC_HAS_REALTIME__
 /* Synchronize at least the data part of a file with the underlying
    media.  */
 extern int fdatasync (int __fildes) __THROW;