Skip to content

Z
ZIO
Commit fd58ceb2 authored by Alessandro Rubini's avatar Alessandro Rubini
Browse files
Options

tools: added test-tdc, that writes zero-sized blocks 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
Acked-by: 's avatarFederico Vaga <federico.vaga@gmail.com>
parent 3fbce082
Hide whitespace changes
Inline Side-by-side
Showing with 164 additions and 1 deletion
tools/.gitignore
View file @ fd58ceb2
zio-dump
data-to-uart
zio-cat-file
test-dtc
\ No newline at end of file
tools/Makefile
View file @ fd58ceb2
......@@ -7,6 +7,7 @@ HOSTCC ?= gcc
hostprogs-y := zio-dump
hostprogs-y += zio-cat-file
hostprogs-y += test-dtc
# The following is ugly, please forgive me by now
user: $(hostprogs-y)
......
tools/test-dtc.c 0 → 100644
View file @ fd58ceb2
/*
* Trivial utility that reports data from ZIO input channels
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/zio.h>
#include <linux/zio-user.h>
#define FNAME "/dev/zdtc-0000-0-0-ctrl"
void help(char *name)
{
fprintf(stderr, "%s: Wrong number of arguments\n"
"Use: \"%s [<opts>]\n", name, name);
fprintf(stderr,
" -f <file> default: %s\n"
" -t <time> default: \"1.5\" (see code for details)\n"
" -p <period> default: \"0\"\n"
" -n <number> default: infinite\n", FNAME);
exit(1);
}
/* Boring parsing separated to a separate function (same code as elsewhere) */
static int parse_ts(char *s, struct timespec *ts)
{
int i, n;
unsigned long nano;
char c;
/*
* Hairy: if we scan "%ld%lf", the 0.009999 will become 9998 micro.
* Thus, scan as integer and string, so we can count leading zeros
*/
nano = 0;
ts->tv_sec = 0;
ts->tv_nsec = 0;
if ( (i = sscanf(s, "%ld.%ld%c", &ts->tv_sec, &nano, &c)) == 1)
return 0; /* seconds only */
if (i == 3)
return -1; /* trailing crap */
if (i == 0)
if (sscanf(s, ".%ld%c", &nano, &c) != 1)
return -1; /* leading or trailing crap */
s = strchr(s, '.') + 1;
n = strlen(s);
if (n > 9)
return -1; /* too many decimals */
while (n < 9) {
nano *= 10;
n++;
}
ts->tv_nsec = nano;
return 0;
}
int main(int argc, char **argv)
{
struct zio_control ctrl = {0,};
char *fname = FNAME;
int verbose = 0;
char *t = NULL, *p = NULL;
int i, fd, n = -1;
struct timespec ts = {1, 5};
struct timespec period = {0, 0};
/* -f <filename> -t <[+][secs].frac> -p <.frac> -v */
while ((i = getopt (argc, argv, "f:t:p:n:v")) != -1) {
switch(i) {
case 'f':
fname = optarg;
break;
case 't':
t = optarg;
break;
case 'p':
p = optarg;
break;
case 'n':
n = atoi(optarg);
break;
case 'v':
verbose++;
break;
default:
help(argv[0]);
}
}
if (!n)
help(argv[0]);
if (t) {
char *t2 = t;
if (t[0] == '+')
t2++;
if (parse_ts(t2, &ts) < 0) {
fprintf(stderr, "%s: can't parse time \"%s\"\n",
argv[0], t);
exit(1);
}
if (t[0] == '+')
ts.tv_sec += time(NULL);
}
if (p) {
if (parse_ts(p, &period) < 0) {
fprintf(stderr, "%s: can't parse period \"%s\"\n",
argv[0], p);
exit(1);
}
}
fd = open(fname, O_WRONLY);
if (fd < 0) {
fprintf(stderr, "%s: %s: %s\n", argv[0], fname,
strerror(errno));
exit(1);
}
ctrl.major_version = ZIO_MAJOR_VERSION;
ctrl.minor_version = ZIO_MINOR_VERSION;
if (verbose) {
printf(" time: %9li.%09li\n", ts.tv_sec, ts.tv_nsec);
printf("period: %9li.%09li\n", period.tv_sec, period.tv_nsec);
}
while (n != 0) {
ctrl.tstamp.secs = ts.tv_sec;
ctrl.tstamp.ticks = ts.tv_nsec;
if (verbose)
printf("%9li.%09li", ts.tv_sec, ts.tv_nsec);
i = write(fd, &ctrl, sizeof(ctrl));
if (i != sizeof(ctrl)) {
fprintf(stderr, "%s: %s: write error (%i bytes, %s)\n",
argv[0], fname, i, strerror(errno));
exit(1);
}
if (verbose)
printf("\n");
ts.tv_nsec += period.tv_nsec;
if (ts.tv_nsec >= 1000 * 1000 * 1000) {
ts.tv_nsec -= 1000 * 1000 * 1000;
ts.tv_sec++;
}
ts.tv_sec += period.tv_sec;
if (n > 0)
n--;
}
exit(0);
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment