openwrt/package/system/opkg/patches/280-call-prerm-and-postrm-scripts-on-upgrade.patch

From a8555d352d2851ee1482b74b57ba9eacfb354c18 Mon Sep 17 00:00:00 2001
From: Peter Urbanec <peteru@urbanec.net>
Date: Thu, 23 Oct 2014 01:05:35 +1100
Subject: [PATCH] opkg_install: Call prerm and postrm scripts on package
 upgrade

When upgrading a package from v1 to v2, run "v1-prerm upgrade v2" and
"v1-postrm upgrade v2", similarly to what dpkg does.

This patch fixes issue 104.

Signed-off-by: Peter Urbanec <openembedded-devel@urbanec.net>
Signed-off-by: Paul Barker <paul@paulbarker.me.uk>
---
 libopkg/opkg_install.c | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

--- a/libopkg/opkg_install.c
+++ b/libopkg/opkg_install.c
@@ -528,7 +528,25 @@ prerm_upgrade_old_pkg(pkg_t *pkg, pkg_t
 	   Error unwind, for both the above cases:
 	   old-postinst abort-upgrade new-version
      */
-     return 0;
+    int err;
+    char *script_args;
+    char *new_version;
+
+    if (!old_pkg || !pkg)
+        return 0;
+
+    new_version = pkg_version_str_alloc(pkg);
+
+    sprintf_alloc(&script_args, "upgrade %s", new_version);
+    free(new_version);
+    err = pkg_run_script(old_pkg, "prerm", script_args);
+    free(script_args);
+    if (err != 0) {
+        opkg_msg(ERROR, "prerm script for package \"%s\" failed\n",
+                 old_pkg->name);
+        return -1;
+    }
+    return 0;
 }
 
 static int
@@ -925,7 +943,25 @@ postrm_upgrade_old_pkg(pkg_t *pkg, pkg_t
 	   new-postrm failed-upgrade old-version
 	Error unwind, for both cases:
 	   old-preinst abort-upgrade new-version    */
-     return 0;
+    int err;
+    char *script_args;
+    char *new_version;
+
+    if (!old_pkg || !pkg)
+        return 0;
+
+    new_version = pkg_version_str_alloc(pkg);
+
+    sprintf_alloc(&script_args, "upgrade %s", new_version);
+    free(new_version);
+    err = pkg_run_script(old_pkg, "postrm", script_args);
+    free(script_args);
+    if (err != 0) {
+        opkg_msg(ERROR, "postrm script for package \"%s\" failed\n",
+                 old_pkg->name);
+        return -1;
+    }
+    return 0;
 }
 
 static int