commit 7110b40d0686441f6212af65b3a046623eb6fb49
author Christopher Faulet <cfaulet@haproxy.com> Wed Oct 26 11:09:44 2016 +0200
committer Willy Tarreau <w@1wt.eu> Wed Nov 09 22:56:59 2016 +0100
tree ea4ab9bce77e8c40bfff1cf4d72768e29109feea
parent fcd99f8eecc28af8aa451ea879627264166f8d23

MINOR: cfgparse: Add functions to backup and restore registered sections

This feature will be used by the stream processing offload engine (SPOE) to
parse dedicated configuration files without mixing HAProxy sections with SPOE
sections.

So, here we can back up all sections known by HAProxy, unregister all of them
and add new ones, dedicted to the SPOE. Once the SPOE configuration file parsed,
we can roll back all changes by restoring HAProxy sections.

include/common/cfgparse.h

diff --git a/include/common/cfgparse.h b/include/common/cfgparse.h
index 39e8a4c..9f432ad 100644
--- a/include/common/cfgparse.h
+++ b/include/common/cfgparse.h
@@ -74,6 +74,8 @@
 int cfg_register_section(char *section_name,
                          int (*section_parser)(const char *, int, char **, int));
 void cfg_unregister_sections(void);
+void cfg_backup_sections(struct list *backup_sections);
+void cfg_restore_sections(struct list *backup_sections);
 int warnif_misplaced_tcp_conn(struct proxy *proxy, const char *file, int line, const char *arg);
 int warnif_misplaced_tcp_sess(struct proxy *proxy, const char *file, int line, const char *arg);
 int warnif_misplaced_tcp_cont(struct proxy *proxy, const char *file, int line, const char *arg);

src/cfgparse.c

diff --git a/src/cfgparse.c b/src/cfgparse.c
index 83accbe..5e84969 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -9258,6 +9258,26 @@
 	}
 }
 
+void cfg_backup_sections(struct list *backup_sections)
+{
+	struct cfg_section *cs, *ics;
+
+	list_for_each_entry_safe(cs, ics, &sections, list) {
+		LIST_DEL(&cs->list);
+		LIST_ADDQ(backup_sections, &cs->list);
+	}
+}
+
+void cfg_restore_sections(struct list *backup_sections)
+{
+	struct cfg_section *cs, *ics;
+
+	list_for_each_entry_safe(cs, ics, backup_sections, list) {
+		LIST_DEL(&cs->list);
+		LIST_ADDQ(&sections, &cs->list);
+	}
+}
+
 __attribute__((constructor))
 static void cfgparse_init(void)
 {