casa-mp-base

--- btrfs-image.c.orig  2009-02-15 14:49:17.000000000 +0100

+++ btrfs-image.c   2009-02-15 12:42:10.000000000 +0100

@@ -249,7 +249,7 @@

 static int metadump_init(struct metadump_struct *md, struct btrfs_root *root,

             FILE *out, int num_threads, int compress_level)

 {

-   int i, ret;

+   int i, ret = 0;

    memset(md, 0, sizeof(*md));

    pthread_cond_init(&md->cond, NULL);

@@ -608,7 +608,11 @@

        if (async->start == BTRFS_SUPER_INFO_OFFSET)

            update_super(outbuf);

+#ifdef __APPLE__

+       ret = pwrite(outfd, outbuf, size, async->start);

+#else

        ret = pwrite64(outfd, outbuf, size, async->start);

+#endif

        BUG_ON(ret != size);

        pthread_mutex_lock(&mdres->mutex);

@@ -834,7 +838,9 @@

    }

    if (num_threads == 0 && compress_level > 0) {

+#ifdef _SC_NPROCESSORS_ONLN

        num_threads = sysconf(_SC_NPROCESSORS_ONLN);

+#endif

        if (num_threads <= 0)

            num_threads = 1;

    }