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- Log -----------------------------------------------------------------
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=4858b4e340b83c545aa5f161bb80a1433bee7886
commit 4858b4e340b83c545aa5f161bb80a1433bee7886
Author: Guillem Jover <[email protected]>
Date: Wed May 13 22:29:12 2015 +0200
ping, ping6: Always use line buffered output.
Standard behaviour is to use line buffered output
even when redirecting output in a pipe.
diff --git a/ChangeLog b/ChangeLog
index 28c7540..02edeac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2015-05-13 Guillem Jover <[email protected]>
+
+ ping, ping6: Always use line buffered output.
+ When stdout is redirected, libc will change the stream to
+ be fully buffered. Suppress this, gaining the standard
+ behaviour of other implementations. Issue was first reported
+ as a wishlist bug of Debian: https://bugs.debian.org/782727.
+
+ * ping/ping.c (main): Request line buffering on stdout, adding
+ a call to setvbuf().
+ * ping/ping6.c (main): Likewise.
+
2015-05-12 Alfred M. Szmidt <[email protected]>
* bootstrap.conf (gnulib_modules): Add announce-gen.
diff --git a/ping/ping.c b/ping/ping.c
index 3f939dc..091e070 100644
--- a/ping/ping.c
+++ b/ping/ping.c
@@ -295,6 +295,9 @@ main (int argc, char **argv)
/* Reset root privileges */
setuid (getuid ());
+ /* Force line buffering regardless of output device. */
+ setvbuf (stdout, NULL, _IOLBF, 0);
+
argv += index;
argc -= index;
diff --git a/ping/ping6.c b/ping/ping6.c
index 9d7609e..b0e0bf1 100644
--- a/ping/ping6.c
+++ b/ping/ping6.c
@@ -254,6 +254,9 @@ main (int argc, char **argv)
/* Reset root privileges */
setuid (getuid ());
+ /* Force line buffering regardless of output device. */
+ setvbuf (stdout, NULL, _IOLBF, 0);
+
argc -= index;
argv += index;
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++++++++
ping/ping.c | 3 +++
ping/ping6.c | 3 +++
3 files changed, 18 insertions(+), 0 deletions(-)
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