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From 3c4b5a852d5bb9070c7fb4428aa50f2e3e1f6e1b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
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Date: Thu, 19 Sep 2013 11:25:49 +0200
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Subject: [PATCH] Confirm success for each tc -batch command
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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If `tc -force -batch' is fed by a controlling program from a pipe,
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it's not possible to recognize when a command has been processes
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successfully.
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This patch adds an optional `-OK' option to the tc(8) tool, so `tc
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-force -OK -batch' will print "OK\n" to standard output on each
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successfully completed tc command.
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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man/man8/tc.8 | 8 +++++++-
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tc/tc.c | 8 +++++++-
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2 files changed, 14 insertions(+), 2 deletions(-)
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diff --git a/man/man8/tc.8 b/man/man8/tc.8
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index e0acfeb..583eae2 100644
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--- a/man/man8/tc.8
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+++ b/man/man8/tc.8
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@@ -49,7 +49,7 @@ DEV
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DEV
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.P
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-.B tc [ -force ] -b\fR[\fIatch\fR] \fB[ filename ]
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+.B tc [ -force ] [ -OK ] -b\fR[\fIatch\fR] \fB[ filename ]
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.ti 8
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.IR FORMAT " := {"
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@@ -440,6 +440,12 @@ First failure will cause termination of tc.
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don't terminate tc on errors in batch mode.
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If there were any errors during execution of the commands, the application return code will be non zero.
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+.TP
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+.BR "\-OK"
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+in batch mode, print
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+.B OK
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+and a new line on standard output after each successfully interpreted command.
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+
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.SH HISTORY
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.B tc
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was written by Alexey N. Kuznetsov and added in Linux 2.2.
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diff --git a/tc/tc.c b/tc/tc.c
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index 9b50e74..b43bb47 100644
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--- a/tc/tc.c
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+++ b/tc/tc.c
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@@ -39,6 +39,7 @@ int batch_mode = 0;
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int resolve_hosts = 0;
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int use_iec = 0;
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int force = 0;
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+int ok = 0;
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struct rtnl_handle rth;
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static void *BODY = NULL; /* cached handle dlopen(NULL) */
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@@ -183,7 +184,7 @@ noexist:
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static void usage(void)
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{
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fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
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- " tc [-force] -batch filename\n"
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+ " tc [-force] [-OK] -batch filename\n"
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"where OBJECT := { qdisc | class | filter | action | monitor }\n"
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" OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] | -b[atch] [filename] }\n");
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}
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@@ -251,6 +252,9 @@ static int batch(const char *name)
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ret = 1;
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if (!force)
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break;
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+ } else if (ok) {
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+ printf("OK\n");
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+ fflush(stdout);
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}
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}
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if (line)
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@@ -288,6 +292,8 @@ int main(int argc, char **argv)
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return 0;
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} else if (matches(argv[1], "-force") == 0) {
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++force;
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+ } else if (matches(argv[1], "-OK") == 0) {
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+ ++ok;
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} else if (matches(argv[1], "-batch") == 0) {
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argc--; argv++;
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if (argc <= 1)
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--
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1.8.3.1
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