fsck.minix: fix broken zone checking

This bug has been introduced by commit
95356e8b744439336925eeb36f01399f1ee8a5e9.

The fsck.minix code assumes that isset() macro returns boolean,
unfortunately the generic implementation from libc returns integer.

This patch also add a fallback for the bitmap macros to include/bitops.h.

Reported-by: "Andries E. Brouwer" <Andries.Brouwer@cwi.nl>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/disk-utils/fsck.minix.c b/disk-utils/fsck.minix.c
index af54c98734a50309895f9aca83cefab383ba44f4..74d1793cd5671fc9281a399e0d43dea64b48a7f3 100644 (file)
--- a/disk-utils/fsck.minix.c
+++ b/disk-utils/fsck.minix.c
@@ -100,12 +100,12 @@
 #include <termios.h>
 #include <mntent.h>
 #include <sys/stat.h>
-#include <sys/param.h>
 #include <signal.h>
 
 #include "minix.h"
 #include "nls.h"
 #include "pathnames.h"
+#include "bitops.h"
 
 #ifndef __linux__
 #define volatile
@@ -170,8 +170,8 @@ static unsigned char * zone_count = NULL;
 static void recursive_check(unsigned int ino);
 static void recursive_check2(unsigned int ino);
 
-#define inode_in_use(x) (isset(inode_map,(x)))
-#define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1))
+#define inode_in_use(x) (isset(inode_map,(x)) != 0)
+#define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1) != 0)
 
 #define mark_inode(x) (setbit(inode_map,(x)),changed=1)
 #define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)

diff --git a/disk-utils/mkfs.minix.c b/disk-utils/mkfs.minix.c
index e669ec6b361a7a0fb1f7affda2a22293a21465d9..5f50d667a015b31afa4a2d708dac86bc9b7eecd3 100644 (file)
--- a/disk-utils/mkfs.minix.c
+++ b/disk-utils/mkfs.minix.c
@@ -77,6 +77,7 @@
 #include "minix.h"
 #include "nls.h"
 #include "pathnames.h"
+#include "bitops.h"
 
 #define MINIX_ROOT_INO 1
 #define MINIX_BAD_INO 2
@@ -132,8 +133,7 @@ static unsigned short good_blocks_table[MAX_GOOD_BLOCKS];
 static int used_good_blocks = 0;
 static unsigned long req_nr_inodes = 0;
 
-#define inode_in_use(x) (isset(inode_map,(x)))
-#define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1))
+#define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1) != 0)
 
 #define mark_inode(x) (setbit(inode_map,(x)))
 #define unmark_inode(x) (clrbit(inode_map,(x)))

diff --git a/include/bitops.h b/include/bitops.h
index e6eaff18cd9c5a2bfdef2793297351e96ee96260..e283b83555ac3db01421190bcbb8b665576bf1e2 100644 (file)
--- a/include/bitops.h
+++ b/include/bitops.h
@@ -4,6 +4,22 @@
 #include <stdint.h>
 #include <endian.h>
 
+/*
+ * Bit map related macros. Usually provided by libc.
+ */
+#include <sys/param.h>
+
+#ifndef NBBY
+# define NBBY            CHAR_BIT
+#endif
+
+#ifndef setbit
+# define setbit(a,i)   ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
+# define clrbit(a,i)   ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
+# define isset(a,i)    ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
+# define isclr(a,i)    (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
+#endif
+
 #if !defined __BYTE_ORDER || !(__BYTE_ORDER == __LITTLE_ENDIAN) && !(__BYTE_ORDER == __BIG_ENDIAN)
 #error missing __BYTE_ORDER
 #endif