Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/recipes-devtools/dpkg/dpkg/glibc2.5-sync_file_range.patch b/meta/recipes-devtools/dpkg/dpkg/glibc2.5-sync_file_range.patch
new file mode 100644
index 0000000..d56b8a6
--- /dev/null
+++ b/meta/recipes-devtools/dpkg/dpkg/glibc2.5-sync_file_range.patch
@@ -0,0 +1,86 @@
+CentOS 5.8 kernels and headers support the sync_file_range() system call,
+but glibc 2.5 doesn't provide the syscall stub. It appears that this
+problem is known but will never be fixed:
+
+ https://bugzilla.redhat.com/show_bug.cgi?id=518581
+
+ Bug 518581 - [RHEL5] glibc misses sync_file_range syscall interface
+
+ Status: CLOSED CANTFIX
+ Last Closed: 2009-11-22 22:19:55
+
+ Kirby Zhou 2009-08-20 23:37:55 EDT
+
+ Description of problem:
+
+ glibc misses sync_file_range syscall interface. The header file and
+ man page both say 'sync_file_range' should exist. From man page,
+ sync_file_range should exist sinc kernel-2.6.17
+
+ Andreas Schwab 2009-08-21 03:24:24 EDT
+
+ It has only been added to glibc 2.6, and cannot be backported due to
+ ABI breakage. You can always fall back to syscall(3).
+
+ Ulrich Drepper 2009-11-22 22:19:55 EST
+
+ As comment #1 says, no chance to backport this.
+
+ See the syscall man page for instructions.
+
+ Jon E 2010-03-19 10:32:37 EDT
+
+ then why document it if it's broken and you're not going to fix it?
+ .. might want to FTFM over at sync_file_range(2) - in the meantime -
+ borrowing from glibc 2.6 .. any thoughts on this implementation for a
+ hacky workaround for those still on your "ancient releases" .. (eg:
+ RHEL5.3)?:
+
+ #ifdef ULI_WONT_FIX_THIS_IN_GLIBC2.5
+ #define NR_sync_file_range 277
+ int sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
+ {
+ return syscall (NR_sync_file_range, fd,
+ __LONG_LONG_PAIR ((long) (from >> 32), (long) from),
+ __LONG_LONG_PAIR ((long) (to >> 32), (long) to),
+ flags);
+ }
+ #endif
+
+ assuming of course that you're on an x86_64 and include/asm-
+ x86_64/unistd.h has the correct entry
+
+ (fwiw - fio is starting to use this now)
+
+Rather than attempting to provide an implementation using syscall(),
+we take the more conservative route and ignore header support for
+sync_file_range() flags when the glibc version is <= 2.5.
+
+Upstream-Status: Inappropriate [everyone else builds on newer hosts :-)]
+
+Signed-off-by: Donn Seeley <donn.seeley@windriver.com>
+Signed-off-by: Lei Liu <lei.liu2@windriver.com>
+---
+ src/archives.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/src/archives.c
++++ b/src/archives.c
+@@ -75,7 +75,7 @@
+ /* Ignore the return code as it should be considered equivalent to an
+ * asynchronous hint for the kernel, we are doing an fsync() later on
+ * anyway. */
+-#if defined(SYNC_FILE_RANGE_WRITE)
++#if defined(SYNC_FILE_RANGE_WRITE) && __GLIBC_PREREQ(2, 6)
+ sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WRITE);
+ #elif defined(HAVE_POSIX_FADVISE)
+ posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED);
+@@ -1179,7 +1179,7 @@
+ return 0;
+ }
+
+-#if defined(SYNC_FILE_RANGE_WAIT_BEFORE)
++#if defined(SYNC_FILE_RANGE_WAIT_BEFORE) && __GLIBC_PREREQ(2, 6)
+ static void
+ tar_writeback_barrier(struct fileinlist *files, struct pkginfo *pkg)
+ {