[PATCH 6/6] SELinux: kills warnings in Improve SELinux performance when AVC misses

[James Morris]

From: KaiGai Kohei <[EMAIL PROTECTED]>

This patch kills ugly warnings when the "Improve SELinux performance when 
AVC misses" patch.

Signed-off-by: KaiGai Kohei <[EMAIL PROTECTED]>
Signed-off-by: James Morris <[EMAIL PROTECTED]>
---
 security/selinux/ss/ebitmap.c |   11 +++++------
 security/selinux/ss/ebitmap.h |    2 ++
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c
index ae44c0c..c1a6b22 100644
--- a/security/selinux/ss/ebitmap.c
+++ b/security/selinux/ss/ebitmap.c
@@ -193,7 +193,7 @@ int ebitmap_netlbl_import(struct ebitmap *ebmap,
                        e_sft = delta % EBITMAP_UNIT_SIZE;
                        while (map) {
                                e_iter->maps[e_idx++] |= map & (-1UL);
-                               map >>= EBITMAP_UNIT_SIZE;
+                               map = EBITMAP_SHIFT_UNIT_SIZE(map);
                        }
                }
                c_iter = c_iter->next;
@@ -389,13 +389,13 @@ int ebitmap_read(struct ebitmap *e, void *fp)
 
                if (startbit & (mapunit - 1)) {
                        printk(KERN_ERR "security: ebitmap start bit (%d) is "
-                              "not a multiple of the map unit size (%Zd)\n",
+                              "not a multiple of the map unit size (%u)\n",
                               startbit, mapunit);
                        goto bad;
                }
                if (startbit > e->highbit - mapunit) {
                        printk(KERN_ERR "security: ebitmap start bit (%d) is "
-                              "beyond the end of the bitmap (%Zd)\n",
+                              "beyond the end of the bitmap (%u)\n",
                               startbit, (e->highbit - mapunit));
                        goto bad;
                }
@@ -433,9 +433,8 @@ int ebitmap_read(struct ebitmap *e, void *fp)
 
                index = (startbit - n->startbit) / EBITMAP_UNIT_SIZE;
                while (map) {
-                       n->maps[index] = map & (-1UL);
-                       map = map >> EBITMAP_UNIT_SIZE;
-                       index++;
+                       n->maps[index++] = map & (-1UL);
+                       map = EBITMAP_SHIFT_UNIT_SIZE(map);
                }
        }
 ok:
diff --git a/security/selinux/ss/ebitmap.h b/security/selinux/ss/ebitmap.h
index e38a327..f283b43 100644
--- a/security/selinux/ss/ebitmap.h
+++ b/security/selinux/ss/ebitmap.h
@@ -21,6 +21,8 @@
 #define EBITMAP_UNIT_SIZE      BITS_PER_LONG
 #define EBITMAP_SIZE           (EBITMAP_UNIT_NUMS * EBITMAP_UNIT_SIZE)
 #define EBITMAP_BIT            1ULL
+#define EBITMAP_SHIFT_UNIT_SIZE(x)                                     \
+       (((x) >> EBITMAP_UNIT_SIZE / 2) >> EBITMAP_UNIT_SIZE / 2)
 
 struct ebitmap_node {
        struct ebitmap_node *next;
-- 
1.5.2.4

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