rescan-scsi-bus.sh: add --ignore-rev; sg_persist: add RLR_C bit to Read capabilities; sg_pt_freebsd+win32: fix SNTL error crashes

git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@778 6180dd3e-e324-4e3e-922d-17de1ae2f315

1 files changed, 19 insertions, 0 deletions

diff --git a/archive/align_b4_memalign.c b/archive/align_b4_memalign.c
new file mode 100644
index 00000000..87602027
--- /dev/null
+++ b/archive/align_b4_memalign.c
@@ -0,0 +1,19 @@
+/* Code fragment of how to get a buffer of heap that has a specific
+ * alignment, typically 'page' size which is 4096 bytes. */
+
+    uint8_t * wrkBuff;	/* will get pointer to heap allocation */
+    uint8_t * wrkPos;	/* will get aligned pointer within wrkBuff */
+    uint32_t sz_of_aligned = 1234;	/* number of aligned bytes required */
+
+    int psz;
+
+#if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
+    psz = sysconf(_SC_PAGESIZE); /* POSIX.1 (was getpagesize()) */
+#else
+    psz = 4096;     /* give up, pick likely figure */
+#endif
+
+
+   /* perhaps use posix_memalign() instead. Yes but not always available */
+    wrkBuff = (uint8_t *)malloc(sz_of_aligned + psz);
+    wrkPos = (uint8_t *)(((sg_uintptr_t)wrkBuff + psz - 1) & (~(psz - 1)));