git: 7516130eb912 - main - kdump(1): minimally adapt to exterror category sources

The branch main has been updated by brooks:

URL: https://cgit.FreeBSD.org/src/commit/?id=7516130eb91264b2faf0c532b29a8e27c2ddd098

commit 7516130eb91264b2faf0c532b29a8e27c2ddd098
Author:     Brooks Davis <brooks@FreeBSD.org>
AuthorDate: 2026-08-03 16:51:19 +0000
Commit:     Brooks Davis <brooks@FreeBSD.org>
CommitDate: 2026-08-03 21:43:23 +0000

    kdump(1): minimally adapt to exterror category sources
    
    Add some minimal handling of category sources other than static kernel
    sources.  We don't actually look up dynamic sources yet (that would
    require extended trace records to add the file names to the trace file
    since we can't assume the trace file is running on a kernel with the
    same numbers.)
    
    Make the decision to append a "src/" prefix to each file name
    dependent on the category source.
    
    Reviewed by:    kib
    Sponsored by:   Innovate UK
    Differential Revision:  https://reviews.freebsd.org/D58412
---
 usr.bin/kdump/kdump.c | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/usr.bin/kdump/kdump.c b/usr.bin/kdump/kdump.c
index 398478c2d86c..d7352b28768c 100644
--- a/usr.bin/kdump/kdump.c
+++ b/usr.bin/kdump/kdump.c
@@ -2447,13 +2447,32 @@ static const char * const cat_to_filenames[] = {
 #include <exterr_cat_filenames.h>
 };
 
+static const char *
+cat_to_file_prefix(int category)
+{
+	switch (EXTERR_CAT_SRC(category)) {
+	case EXTERR_CAT_SRC_KERN_STATIC:
+		return ("sys/");
+	default:
+		return ("");
+	}
+}
+
 static const char *
 cat_to_filename(int category)
 {
-	if (category < 0 || (unsigned)category >= nitems(cat_to_filenames) ||
-	    cat_to_filenames[category] == NULL)
+	switch (EXTERR_CAT_SRC(category)) {
+	case EXTERR_CAT_SRC_KERN_STATIC:
+		if (category < 0 ||
+		    (unsigned)category >= nitems(cat_to_filenames) ||
+		    cat_to_filenames[category] == NULL)
+			return ("unknown");
+		return (cat_to_filenames[category]);
+	case EXTERR_CAT_SRC_KERN_DYNAMIC:
+		return ("kern:dynamic");
+	default:
 		return ("unknown");
-	return (cat_to_filenames[category]);
+	}
 }
 
 static void
@@ -2464,9 +2483,10 @@ ktrexterr(struct ktr_exterr *ke)
 
 	ue = &ke->ue;
 	asprintf(&msg, ue->msg, (uintmax_t)ue->p1, (uintmax_t)ue->p2);
-	printf("{ errno %d sys/%s:%u \"%s\" (category %u p1 %#jx p2 %#jx) }\n",
-	    ue->error, cat_to_filename(ue->cat), ue->src_line, msg,
-	    ue->cat, (uintmax_t)ue->p1, (uintmax_t)ue->p2);
+	printf("{ errno %d %s%s:%u \"%s\" (category %u p1 %#jx p2 %#jx) }\n",
+	    ue->error, cat_to_file_prefix(ue->cat), cat_to_filename(ue->cat),
+	    ue->src_line, msg, ue->cat,
+	    (uintmax_t)ue->p1, (uintmax_t)ue->p2);
 	free(msg);
 }