Export the whole thread name in kinfo_proc

kinfo_proc::ki_tdname is three characters shorter than
thread::td_name.  Add a ki_moretdname field for these three
extra characters.  Add the new field to kinfo_proc32, as well.
Update all in-tree consumers to read the new field and assemble
the full name, except for lldb's HostThreadFreeBSD.cpp, which
I will handle separately.  Bump __FreeBSD_version.

Reviewed by:	kib
MFC after:	1 week
Relnotes:	yes
Sponsored by:	Dell EMC
Differential Revision:	https://reviews.freebsd.org/D8722

1 files changed, 16 insertions, 0 deletions

diff --git a/usr.bin/procstat/procstat.c b/usr.bin/procstat/procstat.c
index cafb33525b27..0388ba01e6af 100644
--- a/usr.bin/procstat/procstat.c
+++ b/usr.bin/procstat/procstat.c
@@ -35,6 +35,7 @@
 #include <libprocstat.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sysexits.h>
 #include <unistd.h>
 
@@ -126,6 +127,21 @@ kinfo_proc_sort(struct kinfo_proc *kipp, int count)
 	qsort(kipp, count, sizeof(*kipp), kinfo_proc_compare);
 }
 
+const char *
+kinfo_proc_thread_name(const struct kinfo_proc *kipp)
+{
+	static char name[MAXCOMLEN+1];
+
+	strlcpy(name, kipp->ki_tdname, sizeof(name));
+	strlcat(name, kipp->ki_moretdname, sizeof(name));
+	if (name[0] == '\0' || strcmp(kipp->ki_comm, name) == 0) {
+		name[0] = '-';
+		name[1] = '\0';
+	}
+
+	return (name);
+}
+
 int
 main(int argc, char *argv[])
 {