svn commit: r353690 - in head/sys: kern sys
Conrad Meyer
cem at FreeBSD.org
Thu Oct 17 18:29:45 UTC 2019
Author: cem
Date: Thu Oct 17 18:29:44 2019
New Revision: 353690
URL: https://svnweb.freebsd.org/changeset/base/353690
Log:
Add a very limited DDB dumpon(8)-alike to MI dumper code
This allows ddb(4) commands to construct a static dumperinfo during
panic/debug and invoke doadump(false) using the provided dumper
configuration (always inserted first in the list).
The intended usecase is a ddb(4)-time netdump(4) command.
Reviewed by: markj (earlier version)
Differential Revision: https://reviews.freebsd.org/D21448
Modified:
head/sys/kern/kern_shutdown.c
head/sys/sys/conf.h
Modified: head/sys/kern/kern_shutdown.c
==============================================================================
--- head/sys/kern/kern_shutdown.c Thu Oct 17 17:48:32 2019 (r353689)
+++ head/sys/kern/kern_shutdown.c Thu Oct 17 18:29:44 2019 (r353690)
@@ -1267,6 +1267,20 @@ cleanup:
return (error);
}
+#ifdef DDB
+void
+dumper_ddb_insert(struct dumperinfo *newdi)
+{
+ TAILQ_INSERT_HEAD(&dumper_configs, newdi, di_next);
+}
+
+void
+dumper_ddb_remove(struct dumperinfo *di)
+{
+ TAILQ_REMOVE(&dumper_configs, di, di_next);
+}
+#endif
+
static bool
dumper_config_match(const struct dumperinfo *di, const char *devname,
const struct diocskerneldump_arg *kda)
Modified: head/sys/sys/conf.h
==============================================================================
--- head/sys/sys/conf.h Thu Oct 17 17:48:32 2019 (r353689)
+++ head/sys/sys/conf.h Thu Oct 17 18:29:44 2019 (r353690)
@@ -366,6 +366,10 @@ int dumper_insert(const struct dumperinfo *di_template
const struct diocskerneldump_arg *kda);
int dumper_remove(const char *devname, const struct diocskerneldump_arg *kda);
+/* For ddb(4)-time use only. */
+void dumper_ddb_insert(struct dumperinfo *);
+void dumper_ddb_remove(struct dumperinfo *);
+
int dump_start(struct dumperinfo *di, struct kerneldumpheader *kdh);
int dump_append(struct dumperinfo *, void *, vm_offset_t, size_t);
int dump_write(struct dumperinfo *, void *, vm_offset_t, off_t, size_t);
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