xfs
[Top] [All Lists]

[PATCH 2/2] OS X partial support

To: xfs@xxxxxxxxxxx
Subject: [PATCH 2/2] OS X partial support
From: Jan Tulak <jtulak@xxxxxxxxxx>
Date: Wed, 15 Jul 2015 14:46:52 +0200
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1436964412-12093-1-git-send-email-jtulak@xxxxxxxxxx>
References: <1436964412-12093-1-git-send-email-jtulak@xxxxxxxxxx>
This patch introduces changes to support current OS X (10.10 Yosemite).
The previous OS X code base is about 4 years old and both OS X and
XFS changed, so there had to be done some work to make it compilable.

- Because some missing APIs in OS X (like fstab/mtab) and the
  unability to mount XFS, not all tools are compiled.
- fls (find last bit) calls were moved to platform headers,
  as OS X has a native implementation.
- xfs_db currently has only a dummy timer implementation
- Various other edits  - some API translations, some, missing
  defines.

The code compiles using Apple's clang, although it throws some
warnings. Some of them are complaints about deprecated calls, some
are false-positives and there are also some incompatible type
assignments/comparisons, so there is a place for further patches.

Signed-off-by: Jan Tulak <jtulak@xxxxxxxxxx>
---
 Makefile              |   6 +++
 include/bitops.h      |  47 -----------------------
 include/builddefs.in  |   2 +-
 include/darwin.h      | 104 +++++++++++++++++++++++++++++++++++++++++---------
 include/freebsd.h     |  47 +++++++++++++++++++++++
 include/gnukfreebsd.h |  46 ++++++++++++++++++++++
 include/irix.h        |  46 ++++++++++++++++++++++
 include/linux.h       |  46 ++++++++++++++++++++++
 libdisk/fstype.c      |   1 +
 libhandle/Makefile    |   4 ++
 libxcmd/paths.c       |   2 +-
 libxfs/xfs_bit.h      |   4 +-
 12 files changed, 285 insertions(+), 70 deletions(-)

diff --git a/Makefile b/Makefile
index 6d6803b..2ab928b 100644
--- a/Makefile
+++ b/Makefile
@@ -48,6 +48,12 @@ LIB_SUBDIRS = libxfs $(DLIB_SUBDIRS)
 TOOL_SUBDIRS = copy db estimate fsck fsr growfs io logprint mkfs quota \
                mdrestore repair rtcp m4 man doc po debian
 
+# Not every tool can work on OS X, so include only those, which has a reason.
+ifeq ($(PKG_PLATFORM),darwin)
+TOOL_SUBDIRS = copy db estimate fsck logprint mkfs quota \
+               mdrestore repair rtcp m4 man doc
+endif
+
 # include is listed last so it is processed last in clean rules.
 SUBDIRS = $(LIB_SUBDIRS) $(TOOL_SUBDIRS) include
 
diff --git a/include/bitops.h b/include/bitops.h
index 930f64a..c6593bd 100644
--- a/include/bitops.h
+++ b/include/bitops.h
@@ -2,53 +2,6 @@
 #define __BITOPS_H__
 
 /*
- * fls: find last bit set.
- */
-
-static inline int fls(int x)
-{
-       int r = 32;
-
-       if (!x)
-               return 0;
-       if (!(x & 0xffff0000u)) {
-               x <<= 16;
-               r -= 16;
-       }
-       if (!(x & 0xff000000u)) {
-               x <<= 8;
-               r -= 8;
-       }
-       if (!(x & 0xf0000000u)) {
-               x <<= 4;
-               r -= 4;
-       }
-       if (!(x & 0xc0000000u)) {
-               x <<= 2;
-               r -= 2;
-       }
-       if (!(x & 0x80000000u)) {
-               r -= 1;
-       }
-       return r;
-}
-
-static inline int fls64(__u64 x)
-{
-       __u32 h = x >> 32;
-       if (h)
-               return fls(h) + 32;
-       return fls(x);
-}
-
-static inline unsigned fls_long(unsigned long l)
-{
-        if (sizeof(l) == 4)
-                return fls(l);
-        return fls64(l);
-}
-
-/*
  * ffz: find first zero bit.
  * Result is undefined if no zero bit exists.
  */
diff --git a/include/builddefs.in b/include/builddefs.in
index 7e9f53d..7f939f6 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -119,7 +119,7 @@ ifeq ($(PKG_PLATFORM),gnukfreebsd)
 PCFLAGS = -D_GNU_SOURCE $(GCCFLAGS)
 endif
 ifeq ($(PKG_PLATFORM),darwin)
-PCFLAGS = -traditional-cpp $(GCCFLAGS)
+PCFLAGS = $(GCCFLAGS)
 DEPENDFLAGS = -D__APPLE__
 endif
 ifeq ($(PKG_PLATFORM),irix)
diff --git a/include/darwin.h b/include/darwin.h
index 30f0052..df47d05 100644
--- a/include/darwin.h
+++ b/include/darwin.h
@@ -24,11 +24,15 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
+#include <sys/types.h>
+#include <ftw.h>
+#include <mach/mach_time.h>
+#include <inttypes.h>
 
 #include <machine/endian.h>
-#define __BYTE_ORDER   BYTE_ORDER
-#define __BIG_ENDIAN   BIG_ENDIAN
-#define __LITTLE_ENDIAN        LITTLE_ENDIAN
+#define __BYTE_ORDER   BYTE_ORDER
+#define __BIG_ENDIAN   BIG_ENDIAN
+#define __LITTLE_ENDIAN        LITTLE_ENDIAN
 
 #include <sys/syscall.h>
 # ifndef SYS_fsctl
@@ -68,45 +72,37 @@ static __inline__ void platform_getoptreset(void)
 
 static __inline__ int platform_uuid_compare(uuid_t *uu1, uuid_t *uu2)
 {
-       return uuid_compare(uu1, uu2, NULL);
+       return uuid_compare((const unsigned char *) uu1, (const unsigned char*) 
uu2);
 }
 
 static __inline__ void platform_uuid_unparse(uuid_t *uu, char *buffer)
 {
-       uint32_t status;
-       char *s;
-       uuid_to_string(uu, &s, &status);
-       if (status == uuid_s_ok)
-               strcpy(buffer, s);
-       else buffer[0] = '\0';
-       free(s);
+       uuid_unparse(*uu, buffer);
 }
 
 static __inline__ int platform_uuid_parse(char *buffer, uuid_t *uu)
 {
-       uint32_t status;
-       uuid_from_string(buffer, uu, &status);
-       return (status == uuid_s_ok);
+       return uuid_parse(buffer, *uu);
 }
 
 static __inline__ int platform_uuid_is_null(uuid_t *uu)
 {
-       return uuid_is_nil(uu, NULL);
+       return uuid_is_null(*uu);
 }
 
 static __inline__ void platform_uuid_generate(uuid_t *uu)
 {
-       uuid_create(uu, NULL);
+       uuid_generate(*uu);
 }
 
 static __inline__ void platform_uuid_clear(uuid_t *uu)
 {
-       uuid_create_nil(uu, NULL);
+       uuid_clear(*uu);
 }
 
 static __inline__ void platform_uuid_copy(uuid_t *dst, uuid_t *src)
 {
-       memcpy(dst, src, sizeof(uuid_t));
+       uuid_copy(*dst, *src);
 }
 
 #define __int8_t       int8_t
@@ -142,11 +138,13 @@ typedef int64_t           xfs_daddr_t;
 #define O_SYNC          0
 #endif
 
-#define ENOATTR                989     /* Attribute not found */
 #define EFSCORRUPTED   990     /* Filesystem is corrupted */
 #define EFSBADCRC      991     /* Bad CRC detected */
 #define constpp                char * const *
 
+#define XATTR_SIZE_MAX 65536    /* size of an extended attribute value (64k) */
+#define XATTR_LIST_MAX 65536    /* size of extended attribute namelist (64k) */
+
 #define HAVE_FID       1
 
 static __inline__ int
@@ -155,4 +153,72 @@ platform_discard_blocks(int fd, uint64_t start, uint64_t 
len)
        return 0;
 }
 
+
+/*
+ * Dummy POSIX timer replacement
+ */
+#define CLOCK_REALTIME 1
+typedef uint64_t timer_t;
+typedef double   timer_c;
+typedef clock_id_t clockid_t;
+struct itimerspec
+  {
+    struct timespec it_interval;
+    struct timespec it_value;
+  };
+
+static inline int timer_create (clockid_t __clock_id,
+                         struct sigevent *__restrict __evp,
+                         timer_t *__restrict __timerid)
+{
+       return 0;
+}
+
+static inline int timer_settime (timer_t __timerid, int __flags,
+                          const struct itimerspec *__restrict __value,
+                          struct itimerspec *__restrict __ovalue)
+{
+       return 0;
+}
+
+static inline int timer_delete (timer_t __timerid)
+{
+       return 0;
+}
+
+static inline int timer_gettime (timer_t __timerid, struct itimerspec *__value)
+{
+       return 0;
+}
+
+/*
+ * fls: find last bit set.
+ */
+
+static inline int platform_fls(int x)
+{
+       return fls(x);
+}
+
+static inline int platform_fls64(__u64 x)
+{
+       __u32 h = x >> 32;
+       if (h)
+               return platform_fls(h) + 32;
+       return platform_fls(x);
+}
+
+static inline unsigned platform_fls_long(unsigned long l)
+{
+        if (sizeof(l) == 4)
+                return platform_fls(l);
+        return platform_fls64(l);
+}
+
+static inline int nftw64(const char *path, int (*fn)(const char *, const 
struct stat *ptr, int flag, struct FTW *), int depth,
+         int flags)
+{
+       return nftw(path, fn, depth, flags);
+}
+
 #endif /* __XFS_DARWIN_H__ */
diff --git a/include/freebsd.h b/include/freebsd.h
index e59b1e8..59deb30 100644
--- a/include/freebsd.h
+++ b/include/freebsd.h
@@ -138,4 +138,51 @@ platform_discard_blocks(int fd, uint64_t start, uint64_t 
len)
        return 0;
 }
 
+/*
+ * fls: find last bit set.
+ */
+
+static inline int platform_fls(int x)
+{
+       int r = 32;
+
+       if (!x)
+               return 0;
+       if (!(x & 0xffff0000u)) {
+               x <<= 16;
+               r -= 16;
+       }
+       if (!(x & 0xff000000u)) {
+               x <<= 8;
+               r -= 8;
+       }
+       if (!(x & 0xf0000000u)) {
+               x <<= 4;
+               r -= 4;
+       }
+       if (!(x & 0xc0000000u)) {
+               x <<= 2;
+               r -= 2;
+       }
+       if (!(x & 0x80000000u)) {
+               r -= 1;
+       }
+       return r;
+}
+
+static inline int platform_fls64(__u64 x)
+{
+       __u32 h = x >> 32;
+       if (h)
+               return platform_fls(h) + 32;
+       return platform_fls(x);
+}
+
+static inline unsigned platform_fls_long(unsigned long l)
+{
+        if (sizeof(l) == 4)
+                return platform_fls(l);
+        return platform_fls64(l);
+}
+
 #endif /* __XFS_FREEBSD_H__ */
diff --git a/include/gnukfreebsd.h b/include/gnukfreebsd.h
index f2e1bf5..8d75b6d 100644
--- a/include/gnukfreebsd.h
+++ b/include/gnukfreebsd.h
@@ -118,4 +118,50 @@ platform_discard_blocks(int fd, uint64_t start, uint64_t 
len)
        return 0;
 }
 
+/*
+ * fls: find last bit set.
+ */
+
+static inline int platform_fls(int x)
+{
+       int r = 32;
+
+       if (!x)
+               return 0;
+       if (!(x & 0xffff0000u)) {
+               x <<= 16;
+               r -= 16;
+       }
+       if (!(x & 0xff000000u)) {
+               x <<= 8;
+               r -= 8;
+       }
+       if (!(x & 0xf0000000u)) {
+               x <<= 4;
+               r -= 4;
+       }
+       if (!(x & 0xc0000000u)) {
+               x <<= 2;
+               r -= 2;
+       }
+       if (!(x & 0x80000000u)) {
+               r -= 1;
+       }
+       return r;
+}
+
+static inline int platform_fls64(__u64 x)
+{
+       __u32 h = x >> 32;
+       if (h)
+               return platform_fls(h) + 32;
+       return platform_fls(x);
+}
+
+static inline unsigned platform_fls_long(unsigned long l)
+{
+        if (sizeof(l) == 4)
+                return platform_fls(l);
+        return platform_fls64(l);
+}
 #endif /* __XFS_KFREEBSD_H__ */
diff --git a/include/irix.h b/include/irix.h
index c7f87d7..6dc4eb2 100644
--- a/include/irix.h
+++ b/include/irix.h
@@ -414,4 +414,50 @@ static __inline__ char * strsep(char **s, const char *ct)
 
 #define        XFS_XFLAG_NODEFRAG              0x00002000
 
+/*
+ * fls: find last bit set.
+ */
+
+static inline int platform_fls(int x)
+{
+       int r = 32;
+
+       if (!x)
+               return 0;
+       if (!(x & 0xffff0000u)) {
+               x <<= 16;
+               r -= 16;
+       }
+       if (!(x & 0xff000000u)) {
+               x <<= 8;
+               r -= 8;
+       }
+       if (!(x & 0xf0000000u)) {
+               x <<= 4;
+               r -= 4;
+       }
+       if (!(x & 0xc0000000u)) {
+               x <<= 2;
+               r -= 2;
+       }
+       if (!(x & 0x80000000u)) {
+               r -= 1;
+       }
+       return r;
+}
+
+static inline int platform_fls64(__u64 x)
+{
+       __u32 h = x >> 32;
+       if (h)
+               return platform_fls(h) + 32;
+       return platform_fls(x);
+}
+
+static inline unsigned platform_fls_long(unsigned long l)
+{
+        if (sizeof(l) == 4)
+                return platform_fls(l);
+        return platform_fls64(l);
+}
 #endif /* __XFS_IRIX_H__ */
diff --git a/include/linux.h b/include/linux.h
index 31c077a..38321ab 100644
--- a/include/linux.h
+++ b/include/linux.h
@@ -143,4 +143,50 @@ typedef __uint64_t xfs_ino_t;
 typedef __uint32_t     xfs_dev_t;
 typedef __int64_t      xfs_daddr_t;
 
+/*
+ * fls: find last bit set.
+ */
+
+static inline int platform_fls(int x)
+{
+       int r = 32;
+
+       if (!x)
+               return 0;
+       if (!(x & 0xffff0000u)) {
+               x <<= 16;
+               r -= 16;
+       }
+       if (!(x & 0xff000000u)) {
+               x <<= 8;
+               r -= 8;
+       }
+       if (!(x & 0xf0000000u)) {
+               x <<= 4;
+               r -= 4;
+       }
+       if (!(x & 0xc0000000u)) {
+               x <<= 2;
+               r -= 2;
+       }
+       if (!(x & 0x80000000u)) {
+               r -= 1;
+       }
+       return r;
+}
+
+static inline int platform_fls64(__u64 x)
+{
+       __u32 h = x >> 32;
+       if (h)
+               return platform_fls(h) + 32;
+       return platform_fls(x);
+}
+
+static inline unsigned platform_fls_long(unsigned long l)
+{
+        if (sizeof(l) == 4)
+                return platform_fls(l);
+        return platform_fls64(l);
+}
 #endif /* __XFS_LINUX_H__ */
diff --git a/libdisk/fstype.c b/libdisk/fstype.c
index 548f297..c8bde34 100644
--- a/libdisk/fstype.c
+++ b/libdisk/fstype.c
@@ -22,6 +22,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include "fstype.h"
 
 /*
diff --git a/libhandle/Makefile b/libhandle/Makefile
index 865ca22..0b5e1ad 100644
--- a/libhandle/Makefile
+++ b/libhandle/Makefile
@@ -10,7 +10,11 @@ LT_CURRENT = 1
 LT_REVISION = 3
 LT_AGE = 0
 
+ifeq ($(PKG_PLATFORM),darwin)
+LTLDFLAGS += -Wl,libhandle.sym
+else
 LTLDFLAGS += -Wl,--version-script,libhandle.sym
+endif
 
 CFILES = handle.c jdm.c
 LSRCFILES = libhandle.sym
diff --git a/libxcmd/paths.c b/libxcmd/paths.c
index c0b1ddb..b360617 100644
--- a/libxcmd/paths.c
+++ b/libxcmd/paths.c
@@ -364,7 +364,7 @@ fs_table_initialise_mounts(
                        continue;
                if (!realpath(stats[i].f_mntfromname, rmntfromname))
                        continue;
-               if (!realpath(stats[i].f_mntonname, rmnttomname)))
+               if (!realpath(stats[i].f_mntonname, rmntonname))
                        continue;
 
                if (path &&
diff --git a/libxfs/xfs_bit.h b/libxfs/xfs_bit.h
index e1649c0..f3e000c 100644
--- a/libxfs/xfs_bit.h
+++ b/libxfs/xfs_bit.h
@@ -41,13 +41,13 @@ static inline __uint64_t xfs_mask64lo(int n)
 /* Get high bit set out of 32-bit argument, -1 if none set */
 static inline int xfs_highbit32(__uint32_t v)
 {
-       return fls(v) - 1;
+       return platform_fls(v) - 1;
 }
 
 /* Get high bit set out of 64-bit argument, -1 if none set */
 static inline int xfs_highbit64(__uint64_t v)
 {
-       return fls64(v) - 1;
+       return platform_fls64(v) - 1;
 }
 
 /* Get low bit set out of 32-bit argument, -1 if none set */
-- 
2.4.3

<Prev in Thread] Current Thread [Next in Thread>