linux-kernel - [PATCH 18/21] dynamic_debug: trim source-path prefix from dynamic

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1310370416-6322-19-git-send-email-jim.cromie@gmail.com>
Date:	Mon, 11 Jul 2011 01:46:53 -0600
From:	Jim Cromie <jim.cromie@...il.com>
To:	jbaron@...hat.com
Cc:	linux-kernel@...r.kernel.org, bvanassche@....org, joe@...ches.com,
	gregkh@...e.de, gnb@...h.org, Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH 18/21] dynamic_debug: trim source-path prefix from dynamic_debug/control

Check for a common source-path prefix, and skip past it, to print a
path thats relative to kernel source's root-dir.  For in-tree modules,
this makes the control file easier to read without a wide screen.

For example:
  kernel/freezer.c:128 [freezer]cancel_freezing - "  clean up: %s\012"

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 lib/dynamic_debug.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 1763cc2..44ccc02 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -829,6 +829,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
 	struct ddebug_iter *iter = m->private;
 	struct _ddebug *dp = p;
 	char flagsbuf[8];
+	int skip = strlen(__FILE__) - strlen("lib/dynamic_debug.c");
 
 	if (verbose >= VERB_PROC_SHOW)
 		pr_info("called m=%p p=%p\n", m, p);
@@ -839,8 +840,11 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
 		return 0;
 	}
 
+	if (strncmp(dp->filename, __FILE__, skip))
+		skip = 0; /* prefix mismatch, don't skip */
+
 	seq_printf(m, "%s:%u [%s]%s %s \"",
-		   dp->filename, dp->lineno,
+		   dp->filename + skip, dp->lineno,
 		   iter->table->mod_name, dp->function,
 		   ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf)));
 	seq_escape(m, dp->format, "\t\r\n\"");
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/