[src/trunk]: src/sbin/rndctl rndctl(8): to -l, add a "samples" column separat...

[nia <nia%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/304186a7dcb3
branches:  trunk
changeset: 954303:304186a7dcb3
user:      nia <nia%NetBSD.org@localhost>
date:      Sun Apr 04 13:37:17 2021 +0000

description:
rndctl(8): to -l, add a "samples" column separate to "bits"

rename the "bits" column to "estimated bits".

this provides a clear indication when a source is being used, but
not increasing the entropy counter.

this commit fixes an unrelated bug where verbose output functioned
incorrectly when a class of device was specified with -t.

while here, reduce code duplication.

"gofer it" riastradh@

diffstat:

 sbin/rndctl/rndctl.c |  69 ++++++++++++++++++++++++---------------------------
 1 files changed, 32 insertions(+), 37 deletions(-)

diffs (116 lines):

diff -r 27859336ef94 -r 304186a7dcb3 sbin/rndctl/rndctl.c
--- a/sbin/rndctl/rndctl.c      Sun Apr 04 13:35:25 2021 +0000
+++ b/sbin/rndctl/rndctl.c      Sun Apr 04 13:37:17 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rndctl.c,v 1.39 2021/04/04 12:50:31 nia Exp $  */
+/*     $NetBSD: rndctl.c,v 1.40 2021/04/04 13:37:17 nia Exp $  */
 
 /*-
  * Copyright (c) 1997 Michael Graff.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: rndctl.c,v 1.39 2021/04/04 12:50:31 nia Exp $");
+__RCSID("$NetBSD: rndctl.c,v 1.40 2021/04/04 13:37:17 nia Exp $");
 #endif
 
 #include <sys/param.h>
@@ -77,6 +77,8 @@
 static void do_ioctl(rndctl_t *);
 static char * strflags(uint32_t, u_int32_t);
 static void do_list(int, u_int32_t, char *);
+static void do_print_source(rndsource_est_t *);
+static void do_print_source_verbose(rndsource_est_t *);
 static void do_stats(void);
 
 static int iflag;
@@ -466,7 +468,26 @@
        return (str);
 }
 
-#define HEADER "Source                 Bits Type      Flags\n"
+#define HEADER "Source       Estimated bits    Samples Type   Flags\n"
+
+static void
+do_print_source(rndsource_est_t *source)
+{
+       printf("%-16s ", source->rt.name);
+       printf("%10" PRIu32 " ", source->rt.total);
+       printf("%10" PRIu32 " ", source->dt_samples + source->dv_samples);
+       printf("%-6s ", find_name(source->rt.type));
+       printf("%s\n", strflags(source->rt.total, source->rt.flags));
+}
+
+static void
+do_print_source_verbose(rndsource_est_t *source)
+{
+       printf("\tDt samples = %d\n", source->dt_samples);
+       printf("\tDt bits = %d\n", source->dt_total);
+       printf("\tDv samples = %d\n", source->dv_samples);
+       printf("\tDv bits = %d\n", source->dv_total);
+}
 
 static void
 do_list(int all, u_int32_t type, char *name)
@@ -482,28 +503,15 @@
        if (fd < 0)
                err(1, "open");
 
-       if (all == 0 && type == 0xff) {
+       if (!all && type == 0xff) {
                strncpy(rstat_name.name, name, sizeof(rstat_name.name));
                res = ioctl(fd, RNDGETESTNAME, &rstat_name);
                if (res < 0)
                        err(1, "ioctl(RNDGETESTNAME)");
                printf(HEADER);
-               printf("%-16s %10u %-4s %s\n",
-                   rstat_name.source.rt.name,
-                   rstat_name.source.rt.total,
-                   find_name(rstat_name.source.rt.type),
-                   strflags(rstat_name.source.rt.total,
-                       rstat_name.source.rt.flags));
-               if (vflag) {
-                       printf("\tDt samples = %d\n",
-                              rstat_name.source.dt_samples);
-                       printf("\tDt bits = %d\n",
-                              rstat_name.source.dt_total);
-                       printf("\tDv samples = %d\n",
-                               rstat_name.source.dv_samples);
-                       printf("\tDv bits = %d\n",
-                              rstat_name.source.dv_total);
-               }
+               do_print_source(&rstat_name.source);
+               if (vflag)
+                       do_print_source_verbose(&rstat_name.source);
                close(fd);
                return;
        }
@@ -525,23 +533,10 @@
                        break;
 
                for (i = 0; i < rstat.count; i++) {
-                       if (all != 0 ||
-                           type == rstat.source[i].rt.type)
-                               printf("%-16s %10u %-4s %s\n",
-                                   rstat.source[i].rt.name,
-                                   rstat.source[i].rt.total,
-                                   find_name(rstat.source[i].rt.type),
-                                   strflags(rstat.source[i].rt.total,
-                                       rstat.source[i].rt.flags));
-                       if (vflag) {
-                               printf("\tDt samples = %d\n",
-                                      rstat.source[i].dt_samples);
-                               printf("\tDt bits = %d\n",
-                                      rstat.source[i].dt_total);
-                               printf("\tDv samples = %d\n",
-                                      rstat.source[i].dv_samples);
-                               printf("\tDv bits = %d\n",
-                                      rstat.source[i].dv_total);
+                       if (all || type == rstat.source[i].rt.type) {
+                               do_print_source(&rstat.source[i]);
+                               if (vflag)
+                                       do_print_source_verbose(&rstat.source[i]);
                        }
                 }
                start += rstat.count;