support configurable page size on mips, powerpc and microblaze

PAGE_SIZE was hardcoded to 4096, which is historically what most
systems use, but on several archs it is a kernel config parameter,
user space can only know it at execution time from the aux vector.

PAGE_SIZE and PAGESIZE are not defined on archs where page size is
a runtime parameter, applications should use sysconf(_SC_PAGE_SIZE)
to query it. Internally libc code defines PAGE_SIZE to libc.page_size,
which is set to aux[AT_PAGESZ] in __init_libc and early in __dynlink
as well. (Note that libc.page_size can be accessed without GOT, ie.
before relocations are done)

Some fpathconf settings are hardcoded to 4096, these should be actually
queried from the filesystem using statfs.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/aio/aio_readwrite.c b/src/aio/aio_readwrite.c
index 666372db..0de3d4fb 100644
--- a/src/aio/aio_readwrite.c
+++ b/src/aio/aio_readwrite.c
@@ -2,8 +2,8 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <unistd.h>
-#include <limits.h>
 #include "pthread_impl.h"
+#include "libc.h"
 
 static void dummy(void)
 {
diff --git a/src/aio/lio_listio.c b/src/aio/lio_listio.c
index 07145dd4..61d7f20e 100644
--- a/src/aio/lio_listio.c
+++ b/src/aio/lio_listio.c
@@ -1,9 +1,9 @@
 #include <aio.h>
 #include <errno.h>
-#include <limits.h>
 #include <unistd.h>
 #include <string.h>
 #include "pthread_impl.h"
+#include "libc.h"
 
 struct lio_state {
 	struct sigevent *sev;