* cygmalloc.h (MALLOC_FAILURE_ACTION): Define empty.

	* cygwin.din (posix_madvise): Export.
	(posix_memalign): Export.
	* fhandler.cc (fhandler_base::fpathconf): Return useful values in
	_PC_VDISABLE, _PC_SYNC_IO and _PC_SYMLINK_MAX cases.
	* malloc_wrapper.cc (malloc): Set errno here since it's not set in
	dlmalloc.c anymore.
	(realloc): Ditto.
	(calloc): Ditto.
	(memalign): Ditto.
	(valloc): Ditto.
	(posix_memalign): New function.
	* mmap.cc (posix_madvise): New function.
	* sysconf.cc (get_open_max): New function.
	(get_page_size): Ditto.
	(get_nproc_values): Ditto.
	(get_avphys): Ditto.
	(sc_type): New type.
	(sca): New array to map _SC_xxx options to sysconf return values.
	(sysconf): Reimplement using sca array.
	* include/limits.h: Add all missing values as defined by SUSv3.
	* include/pthread.h (PTHREAD_DESTRUCTOR_ITERATIONS): Move definition
	to sys/limits.h.
	(PTHREAD_KEYS_MAX): Ditto.
	* include/semaphore.h (SEM_VALUE_MAX): Ditto.
	* include/cygwin/stdlib.h (posix_memalign): Declare.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/mman.h: Add posix_madvise flags.
	(posix_madvise): Declare.
	* include/sys/termios.h (_POSIX_VDISABLE): Move definition to
	sys/limits.h.

1 files changed, 23 insertions, 0 deletions

diff --git a/winsup/cygwin/mmap.cc b/winsup/cygwin/mmap.cc
index 3c1552f81..309620a90 100644
--- a/winsup/cygwin/mmap.cc
+++ b/winsup/cygwin/mmap.cc
@@ -1650,6 +1650,29 @@ munlock (const void *addr, size_t len)
   return ret;
 }
 
+extern "C" int
+posix_madvise (void *addr, size_t len, int advice)
+{
+  /* Check parameters. */
+  if (advice < POSIX_MADV_NORMAL || advice > POSIX_MADV_DONTNEED
+      || !len)
+    return EINVAL;
+
+  /* Check requested memory area. */
+  MEMORY_BASIC_INFORMATION m;
+  char *p = (char *) addr;
+  char *endp = p + len;
+  while (p < endp)
+    {
+      if (!VirtualQuery (p, &m, sizeof m) || m.State == MEM_FREE)
+	return ENOMEM;
+      p = (char *) m.BaseAddress + m.RegionSize;
+    }
+
+  /* Eventually do nothing. */
+  return 0;
+}
+
 /*
  * Base implementation:
  *