[OE-core] [thud][PATCH] opkg-utils: backport a patch to fix a sstate timestamp issue

[liu.ming50 at gmail.com]

From: Ming Liu <liu.ming50 at gmail.com>

When using sstate, two parallel builds can produce two packages
with the same mtime but different checksums. When later one of
those two builds fetches the others ipk, the package index does
not get udpated properly (since mtime matches). This ends up with
messages such as:
  Downloading file:/../tmp/work/../image/...ipk.
  Removing corrupt package file /../sysroot/../var/cache/opkg/volatile/...ipk

However, in that case, ctime is different. Use ctime instead of
mtime to prevent failures like this.

Signed-off-by: Ming Liu <liu.ming50 at gmail.com>
---
 ...pkg-make-index-use-ctime-instead-of-mtime.patch | 59 ++++++++++++++++++++++
 .../opkg-utils/opkg-utils_0.3.6.bb                 |  1 +
 2 files changed, 60 insertions(+)
 create mode 100644 meta/recipes-devtools/opkg-utils/opkg-utils/0001-opkg-make-index-use-ctime-instead-of-mtime.patch

diff --git a/meta/recipes-devtools/opkg-utils/opkg-utils/0001-opkg-make-index-use-ctime-instead-of-mtime.patch b/meta/recipes-devtools/opkg-utils/opkg-utils/0001-opkg-make-index-use-ctime-instead-of-mtime.patch
new file mode 100644
index 0000000..19778ac
--- /dev/null
+++ b/meta/recipes-devtools/opkg-utils/opkg-utils/0001-opkg-make-index-use-ctime-instead-of-mtime.patch
@@ -0,0 +1,59 @@
+From 0cd38bb1bdcdbfc091014a1f39d015a1586a33e6 Mon Sep 17 00:00:00 2001
+From: Stefan Agner <stefan.agner at toradex.com>
+Date: Fri, 19 Oct 2018 17:38:21 +0200
+Subject: [PATCH] opkg-make-index: use ctime instead of mtime
+
+Upstream-Status: Backport
+
+When using sstate, two parallel builds can produce two packages
+with the same mtime but different checksums. When later one of
+those two builds fetches the others ipk, the package index does
+not get udpated properly (since mtime matches). This ends up with
+messages such as:
+  Downloading file:/../tmp/work/../image/...ipk.
+  Removing corrupt package file /../sysroot/../var/cache/opkg/volatile/...ipk
+
+However, in that case, ctime is different. Use ctime instead of
+mtime to prevent failures like this.
+
+Suggested-by: Khem Raj <raj.khem at gmail.com>
+Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
+Acked-by: Richard Purdie <richard.purdie at linuxfoundation.org>
+Acked-by: Khem Raj <raj.khem at gmail.com>
+Signed-off-by: Alejandro del Castillo <alejandro.delcastillo at ni.com>
+Signed-off-by: Ming Liu <liu.ming50 at gmail.com>
+---
+ opkg-make-index | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/opkg-make-index b/opkg-make-index
+index 3227fc0..db7bf64 100755
+--- a/opkg-make-index
++++ b/opkg-make-index
+@@ -115,12 +115,12 @@ for abspath in files:
+      pkg = None
+      fnameStat = os.stat(abspath)
+      if filename in old_pkg_hash:
+-          if filename in pkgsStamps and int(fnameStat.st_mtime) == pkgsStamps[filename]:
++          if filename in pkgsStamps and int(fnameStat.st_ctime) == pkgsStamps[filename]:
+             if (verbose):
+                sys.stderr.write("Found %s in Packages\n" % (filename,))
+             pkg = old_pkg_hash[filename]
+           else:
+-               sys.stderr.write("Found %s in Packages, but mtime differs - re-reading\n" % (filename,))
++               sys.stderr.write("Found %s in Packages, but ctime differs - re-reading\n" % (filename,))
+ 
+      if not pkg:
+           if (verbose):
+@@ -137,7 +137,7 @@ for abspath in files:
+      else:
+           old_filename = ""
+      s = packages.add_package(pkg, opt_a)
+-     pkgsStamps[filename] = fnameStat.st_mtime
++     pkgsStamps[filename] = fnameStat.st_ctime
+      if s == 0:
+           if old_filename:
+                # old package was displaced by newer
+-- 
+2.7.4
+
diff --git a/meta/recipes-devtools/opkg-utils/opkg-utils_0.3.6.bb b/meta/recipes-devtools/opkg-utils/opkg-utils_0.3.6.bb
index 4c41774..41cf11c 100644
--- a/meta/recipes-devtools/opkg-utils/opkg-utils_0.3.6.bb
+++ b/meta/recipes-devtools/opkg-utils/opkg-utils_0.3.6.bb
@@ -14,6 +14,7 @@ SRC_URI = "http://git.yoctoproject.org/cgit/cgit.cgi/${BPN}/snapshot/${BPN}-${PV
            file://threaded-xz.patch \
            file://pigz.patch \
            file://0001-update-alternatives-Fix-link-relocation-support.patch \
+           file://0001-opkg-make-index-use-ctime-instead-of-mtime.patch \
 "
 SRC_URI_append_class-native = " file://tar_ignore_error.patch"
 UPSTREAM_CHECK_URI = "http://git.yoctoproject.org/cgit/cgit.cgi/opkg-utils/refs/"
-- 
2.7.4