rootfs_rpm.bbclass: Enable pre and post install scripts

[YOCTO #1755]

We change the want the RPM rootfs install works to install pre and post install
scripts.  The new method uses a script helper that is invoked by RPM outside
of the normal chroot.

The wrapper is dynamically generated prior to the install starting.  It will
check the return code of the script.  If the script fails, it will store a copy
to be executed on the first system boot.  This is similar to the previous
mechanism.

In addition, a line of debug was added to the scripts as written by package_rpm
to list which package and which script for later debugging, if necessary.

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>

2 files changed, 161 insertions, 1 deletions

diff --git a/meta/recipes-devtools/rpm/rpm/rpm-scriptletexechelper.patch b/meta/recipes-devtools/rpm/rpm/rpm-scriptletexechelper.patch
new file mode 100644
index 000000000..e4db0e421
--- /dev/null
+++ b/meta/recipes-devtools/rpm/rpm/rpm-scriptletexechelper.patch
@@ -0,0 +1,159 @@
+Enable a cross-install scriptlet helper.
+
+The helper is called from outside of the chroot with the arguments:
+
+<root> <prog> <script> <arg1> [<arg2> ... <argN>]
+
+The helper script is used by oe-core to facilitate shell script actions that
+can not be run from within a chroot on a foreign target system during a
+cross install.
+
+Upstream-Status: Pending
+
+Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
+
+diff -ur rpm-5.4.0.orig/lib/psm.c rpm-5.4.0/lib/psm.c
+--- rpm-5.4.0.orig/lib/psm.c	2010-12-29 07:42:11.000000000 -0600
++++ rpm-5.4.0/lib/psm.c	2011-11-08 13:38:48.132791154 -0600
+@@ -792,6 +792,10 @@
+     int xx;
+     int i;
+ 
++#ifdef RPM_VENDOR_POKY
++    const char * scriptletWrapper = rpmExpand("%{?_cross_scriptlet_wrapper}", NULL);
++#endif
++    
+     if (psm->sstates != NULL && ix >= 0 && ix < RPMSCRIPT_MAX)
+ 	ssp = psm->sstates + ix;
+     if (ssp != NULL)
+@@ -858,14 +862,29 @@
+ 		(F_ISSET(psm, UNORDERED) ? "a" : ""));
+ 
+     if (Phe->p.argv == NULL) {
+-	argv = alloca(5 * sizeof(*argv));
+-	argv[0] = "/bin/sh";
+-	argc = 1;
++	argv = alloca(7 * sizeof(*argv));
++	argc = 0;
++    } else {
++	argv = alloca((Phe->c + 6) * sizeof(*argv));
++	argc = 0;
++    }
++
++#ifdef RPM_VENDOR_POKY
++    if (scriptletWrapper && *scriptletWrapper) {
++        argv[argc++] = scriptletWrapper;
++	argv[argc] = rpmtsRootDir(ts);
++	if (!argv[argc] || !*argv[argc])
++	   argv[argc] = "/";
++	argc++;
++    }
++#endif
++
++    if (Phe->p.argv == NULL) {
++        argv[argc++] = "/bin/sh";
+ 	ldconfig_done = 0;
+     } else {
+-	argv = alloca((Phe->c + 4) * sizeof(*argv));
+-	memcpy(argv, Phe->p.argv, Phe->c * sizeof(*argv));
+-	argc = Phe->c;
++	memcpy((argv + argc), Phe->p.argv, Phe->c * sizeof(*argv));
++	argc += Phe->c;
+ 	ldconfig_done = (ldconfig_path && !strcmp(argv[0], ldconfig_path)
+ 		? 1 : 0);
+     }
+@@ -916,7 +935,12 @@
+ 	    goto exit;
+ 
+ 	if (rpmIsDebug() &&
+-	    (!strcmp(argv[0], "/bin/sh") || !strcmp(argv[0], "/bin/bash")))
++	    (!strcmp(argv[0], "/bin/sh") || !strcmp(argv[0], "/bin/bash"))
++#ifdef RPM_VENDOR_POKY
++	    || (scriptletWrapper && *scriptletWrapper && !strcmp(argv[1], "/bin/sh"))
++	    || (scriptletWrapper && *scriptletWrapper && !strcmp(argv[1], "/bin/bash"))
++#endif
++	   )
+ 	{
+ 	    static const char set_x[] = "set -x\n";
+ 	    nw = Fwrite(set_x, sizeof(set_x[0]), sizeof(set_x)-1, fd);
+@@ -1051,12 +1075,22 @@
+ 
+ 	{   const char * rootDir = rpmtsRootDir(ts);
+ 	    if (!rpmtsChrootDone(ts) && rootDir != NULL &&
++#ifdef RPM_VENDOR_POKY
++		!(scriptletWrapper && *scriptletWrapper) &&
++#endif
+ 		!(rootDir[0] == '/' && rootDir[1] == '\0'))
+ 	    {
+ 		/*@-modobserver@*/
+ 		xx = Chroot(rootDir);
+ 		/*@=modobserver@*/
+ 	    }
++#ifdef RPM_VENDOR_POKY
++	    if (!rpmtsChrootDone(ts) && rootDir != NULL &&
++		(scriptletWrapper && *scriptletWrapper) &&
++		!(rootDir[0] == '/' && rootDir[1] == '\0'))
++		xx = Chdir(rootDir);
++	    else 
++#endif
+ 	    xx = Chdir("/");
+ 	    rpmlog(RPMLOG_DEBUG, D_("%s: %s(%s)\texecv(%s) pid %d\n"),
+ 			psm->stepName, sln, NVRA,
+@@ -2961,6 +2995,13 @@
+     case PSM_SCRIPT:	/* Run current package scriptlets. */
+ 	/* XXX running %verifyscript/%sanitycheck doesn't have psm->te */
+     {	rpmtxn _parent = (psm && psm->te ? psm->te->txn : NULL);
++
++#ifdef RPM_VENDOR_POKY
++        const char * scriptletWrapper = rpmExpand("%{?_cross_scriptlet_wrapper}", NULL);
++	if (scriptletWrapper && *scriptletWrapper)
++	     rc = rpmpsmNext(psm, PSM_CHROOT_OUT);
++#endif
++
+ 	xx = rpmtxnBegin(rpmtsGetRdb(ts), _parent, NULL);
+ 	rc = runInstScript(psm);
+ 	if (rc)
+@@ -2968,11 +3009,24 @@
+ 	else
+ 	     xx = rpmtxnCommit(rpmtsGetRdb(ts)->db_txn);
+ 	rpmtsGetRdb(ts)->db_txn = NULL;
++#ifdef RPM_VENDOR_POKY
++	if (scriptletWrapper && *scriptletWrapper)
++	     rc = rpmpsmNext(psm, PSM_CHROOT_IN);
++#endif
+     }	break;
+     case PSM_TRIGGERS:
+ 	/* Run triggers in other package(s) this package sets off. */
+ 	if (rpmtsFlags(ts) & RPMTRANS_FLAG_TEST)	break;
++#ifdef RPM_VENDOR_POKY
++        const char * scriptletWrapper = rpmExpand("%{?_cross_scriptlet_wrapper}", NULL);
++	if (scriptletWrapper && *scriptletWrapper)
++	     rc = rpmpsmNext(psm, PSM_CHROOT_OUT);
++#endif
+ 	rc = runTriggers(psm);
++#ifdef RPM_VENDOR_POKY
++	if (scriptletWrapper && *scriptletWrapper)
++	     rc = rpmpsmNext(psm, PSM_CHROOT_IN);
++#endif
+ 	break;
+     case PSM_IMMED_TRIGGERS:
+ 	/* Run triggers in this package other package(s) set off. */
+@@ -2982,7 +3036,18 @@
+ 	    F_SET(psm, GOTTRIGGERS);
+ 	}
+ 	if (psm->triggers != NULL)
++#ifdef RPM_VENDOR_POKY
++	{
++            const char * scriptletWrapper = rpmExpand("%{?_cross_scriptlet_wrapper}", NULL);
++	    if (scriptletWrapper && *scriptletWrapper)
++	         rc = rpmpsmNext(psm, PSM_CHROOT_OUT);
++#endif
+ 	    rc = runImmedTriggers(psm);
++#ifdef RPM_VENDOR_POKY
++	    if (scriptletWrapper && *scriptletWrapper)
++	         rc = rpmpsmNext(psm, PSM_CHROOT_IN);
++	}
++#endif
+ 	break;
+ 
+     case PSM_RPMIO_FLAGS:
diff --git a/meta/recipes-devtools/rpm/rpm_5.4.0.bb b/meta/recipes-devtools/rpm/rpm_5.4.0.bb
index bbef0be71..f8fe83656 100644
--- a/meta/recipes-devtools/rpm/rpm_5.4.0.bb
+++ b/meta/recipes-devtools/rpm/rpm_5.4.0.bb
@@ -45,7 +45,7 @@ LIC_FILES_CHKSUM = "file://COPYING.LIB;md5=2d5025d4aa3495befef8f17206a5b0a1"
 DEPENDS = "bzip2 zlib db openssl elfutils expat libpcre attr acl popt ${extrarpmdeps}"
 extrarpmdeps = "python perl"
 extrarpmdeps_virtclass-native = "file-native"
-PR = "r22"
+PR = "r23"
 
 # rpm2cpio is a shell script, which is part of the rpm src.rpm.  It is needed
 # in order to extract the distribution SRPM into a format we can extract...
@@ -63,6 +63,7 @@ SRC_URI = "http://www.rpm5.org/files/rpm/rpm-5.4/rpm-5.4.0-0.20101229.src.rpm;ex
 	   file://rpm-fileclass.patch \
 	   file://rpm-canonarch.patch \
 	   file://rpm-no-loopmsg.patch \
+	   file://rpm-scriptletexechelper.patch \
 	   file://pythondeps.sh \
 	  "