From 76282e2441864414fc7548ca5685de5d4dc29c6c Mon Sep 17 00:00:00 2001
From: graham.gower@gmail.com <graham.gower@gmail.com@e8e0d7a0-c8d9-11dd-a880-a1081c7ac358>
Date: Tue, 23 Nov 2010 19:01:35 -0500
Subject: Abort package removal if the prerm script of a package returns non zero.

This can be overridden with --force-remove.
Also, improve propagation of errors up the call stack for related errors.

From Sergey 'Jin' Bostandzhyan.

git-svn-id: http://opkg.googlecode.com/svn/trunk@587 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358
---
diff --git a/libopkg/opkg_conf.h b/libopkg/opkg_conf.h
index 0b163b0..af6b9ab 100644
--- a/libopkg/opkg_conf.h
+++ b/libopkg/opkg_conf.h
@@ -75,6 +75,7 @@ struct opkg_conf
      int force_removal_of_dependent_packages;
      int force_removal_of_essential_packages;
      int force_postinstall;
+     int force_remove;
      int check_signature;
      int nodeps; /* do not follow dependencies */
      char *offline_root;
diff --git a/libopkg/opkg_remove.c b/libopkg/opkg_remove.c
index e2a63e1..c6f2e37 100644
--- a/libopkg/opkg_remove.c
+++ b/libopkg/opkg_remove.c
@@ -170,6 +170,7 @@ static int
 remove_autoinstalled(pkg_t *pkg)
 {
 	int i, j;
+	int err = 0;
 	int n_deps;
 	pkg_t *p;
 	struct compound_depend *cdep;
@@ -205,7 +206,9 @@ remove_autoinstalled(pkg_t *pkg)
 				 opkg_msg(NOTICE, "%s was autoinstalled and is "
 					       "now orphaned, removing.\n",
 					       p->name);
-			         opkg_remove_pkg(p, 0);
+				if (opkg_remove_pkg(p, 0) != 0) {
+					err = -1;
+				}
 			} else
 				opkg_msg(INFO, "%s was autoinstalled and is "
 						"still required by %d "
@@ -217,7 +220,7 @@ remove_autoinstalled(pkg_t *pkg)
 		}
 	}
 
-	return 0;
+	return err;
 }
 
 int
@@ -291,7 +294,16 @@ opkg_remove_pkg(pkg_t *pkg, int from_upgrade)
      pkg->state_want = SW_DEINSTALL;
      opkg_state_changed++;
 
-     pkg_run_script(pkg, "prerm", "remove");
+     if (pkg_run_script(pkg, "prerm", "remove") != 0) {
+         if (!conf->force_remove) {
+             opkg_msg(ERROR, "not removing package \"%s\", "
+                             "prerm script failed\n", pkg->name);
+             opkg_msg(NOTICE, "You can force removal of packages with failed "
+                              "prerm scripts with the option: \n"
+                              "\t--force-remove\n");
+             return -1;
+         }
+     }
 
      /* DPKG_INCOMPATIBILITY: dpkg is slightly different here. It
 	maintains an empty filelist rather than deleting it. That seems
@@ -300,7 +312,7 @@ opkg_remove_pkg(pkg_t *pkg, int from_upgrade)
 	feel free to fix this. */
      remove_data_files_and_list(pkg);
 
-     pkg_run_script(pkg, "postrm", "remove");
+     err = pkg_run_script(pkg, "postrm", "remove");
 
      remove_maintainer_scripts(pkg);
      pkg->state_status = SS_NOT_INSTALLED;
@@ -309,10 +321,12 @@ opkg_remove_pkg(pkg_t *pkg, int from_upgrade)
 	  parent_pkg->state_status = SS_NOT_INSTALLED;
 
      /* remove autoinstalled packages that are orphaned by the removal of this one */
-     if (conf->autoremove)
-       remove_autoinstalled(pkg);
-
-     return 0;
+     if (conf->autoremove) {
+         if (remove_autoinstalled(pkg) != 0) {
+             err = -1;
+         }
+     }
+     return err;
 }
 
 void
diff --git a/src/opkg-cl.c b/src/opkg-cl.c
index bf123cd..5b72050 100644
--- a/src/opkg-cl.c
+++ b/src/opkg-cl.c
@@ -40,6 +40,7 @@ enum {
 	ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES,
 	ARGS_OPT_FORCE_SPACE,
 	ARGS_OPT_FORCE_POSTINSTALL,
+	ARGS_OPT_FORCE_REMOVE,
 	ARGS_OPT_ADD_ARCH,
 	ARGS_OPT_ADD_DEST,
 	ARGS_OPT_NOACTION,
@@ -79,6 +80,8 @@ static struct option long_options[] = {
 		ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES},
 	{"force-postinstall", 0, 0, ARGS_OPT_FORCE_POSTINSTALL},
 	{"force_postinstall", 0, 0, ARGS_OPT_FORCE_POSTINSTALL},
+	{"force-remove", 0, 0, ARGS_OPT_FORCE_REMOVE},
+	{"force_remove", 0, 0, ARGS_OPT_FORCE_REMOVE},
 	{"noaction", 0, 0, ARGS_OPT_NOACTION},
 	{"download-only", 0, 0, ARGS_OPT_DOWNLOAD_ONLY},
 	{"nodeps", 0, 0, ARGS_OPT_NODEPS},
@@ -166,6 +169,9 @@ args_parse(int argc, char *argv[])
 		case ARGS_OPT_FORCE_POSTINSTALL:
 			conf->force_postinstall = 1;
 			break;
+		case ARGS_OPT_FORCE_REMOVE:
+			conf->force_remove = 1;
+			break;
 		case ARGS_OPT_NODEPS:
 			conf->nodeps = 1;
 			break;
@@ -270,6 +276,7 @@ usage()
 	printf("\t--force-downgrade	Allow opkg to downgrade packages\n");
 	printf("\t--force-space		Disable free space checks\n");
 	printf("\t--force-postinstall	Run postinstall scripts even in offline mode\n");
+	printf("\t--force-remove	Remove package even if prerm script fails\n");
 	printf("\t--noaction		No action -- test only\n");
 	printf("\t--download-only	No action -- download only\n");
 	printf("\t--nodeps		Do not follow dependencies\n");
--
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