From 6dd62720fe84f7e2ad902c915b952fc0b29e3dcd Mon Sep 17 00:00:00 2001
From: Panu Matilainen <pmatilai@redhat.com>
Date: Tue, 15 Feb 2022 11:34:37 +0200
Subject: [PATCH] Swap over to dirfd+basename based operation within the fsm

Within fsm this is just a matter of adjusting error messages to include
the directory... if it only wasn't for the plugins requiring absolute
paths for outside users. For the plugins, we need to assemble absolute
paths as needed, both in ensureDir() and plugin file slots.
---
 lib/rpmplugins.c | 20 +++++++++++++++++---
 2 files changed, 36 insertions(+), 14 deletions(-)

diff --git a/lib/rpmplugins.c b/lib/rpmplugins.c
index 703368c0d..f06fd7895 100644
--- a/lib/rpmplugins.c
+++ b/lib/rpmplugins.c
@@ -350,21 +350,31 @@ rpmRC rpmpluginsCallScriptletPost(rpmPlugins plugins, const char *s_name, int ty
     return rc;
 }
 
+static char *abspath(rpmfi fi, const char *path)
+{
+    if (*path == '/')
+	return xstrdup(path);
+    else
+	return rstrscat(NULL, rpmfiDN(fi), path, NULL);
+}
+
 rpmRC rpmpluginsCallFsmFilePre(rpmPlugins plugins, rpmfi fi, const char *path,
 			       mode_t file_mode, rpmFsmOp op)
 {
     plugin_fsm_file_pre_func hookFunc;
     int i;
     rpmRC rc = RPMRC_OK;
+    char *apath = abspath(fi, path);
 
     for (i = 0; i < plugins->count; i++) {
 	rpmPlugin plugin = plugins->plugins[i];
 	RPMPLUGINS_SET_HOOK_FUNC(fsm_file_pre);
-	if (hookFunc && hookFunc(plugin, fi, path, file_mode, op) == RPMRC_FAIL) {
+	if (hookFunc && hookFunc(plugin, fi, apath, file_mode, op) == RPMRC_FAIL) {
 	    rpmlog(RPMLOG_ERR, "Plugin %s: hook fsm_file_pre failed\n", plugin->name);
 	    rc = RPMRC_FAIL;
 	}
     }
+    free(apath);
 
     return rc;
 }
@@ -375,14 +385,16 @@ rpmRC rpmpluginsCallFsmFilePost(rpmPlugins plugins, rpmfi fi, const char *path,
     plugin_fsm_file_post_func hookFunc;
     int i;
     rpmRC rc = RPMRC_OK;
+    char *apath = abspath(fi, path);
 
     for (i = 0; i < plugins->count; i++) {
 	rpmPlugin plugin = plugins->plugins[i];
 	RPMPLUGINS_SET_HOOK_FUNC(fsm_file_post);
-	if (hookFunc && hookFunc(plugin, fi, path, file_mode, op, res) == RPMRC_FAIL) {
+	if (hookFunc && hookFunc(plugin, fi, apath, file_mode, op, res) == RPMRC_FAIL) {
 	    rpmlog(RPMLOG_WARNING, "Plugin %s: hook fsm_file_post failed\n", plugin->name);
 	}
     }
+    free(apath);
 
     return rc;
 }
@@ -394,15 +406,17 @@ rpmRC rpmpluginsCallFsmFilePrepare(rpmPlugins plugins, rpmfi fi,
     plugin_fsm_file_prepare_func hookFunc;
     int i;
     rpmRC rc = RPMRC_OK;
+    char *apath = abspath(fi, path);
 
     for (i = 0; i < plugins->count; i++) {
 	rpmPlugin plugin = plugins->plugins[i];
 	RPMPLUGINS_SET_HOOK_FUNC(fsm_file_prepare);
-	if (hookFunc && hookFunc(plugin, fi, fd, path, dest, file_mode, op) == RPMRC_FAIL) {
+	if (hookFunc && hookFunc(plugin, fi, fd, apath, dest, file_mode, op) == RPMRC_FAIL) {
 	    rpmlog(RPMLOG_ERR, "Plugin %s: hook fsm_file_prepare failed\n", plugin->name);
 	    rc = RPMRC_FAIL;
 	}
     }
+    free(apath);
 
     return rc;
 }
-- 
2.41.0