When running a testsuite on FreeBSD, I saw a lot of:
1+ records in
0+1 records out
10 bytes transferred in 0.000063 secs (158875 bytes/sec)
literring the testsuite, and traced it to the fact that we
were silencing one, but not the other, dd usage in our fallback.
* build-aux/mktempd (rand_bytes): Silence dd.
Signed-off-by: Eric Blake <ebl...@redhat.com>
---
ChangeLog | 5 +++++
build-aux/mktempd | 3 ++-
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index fdf8b25..5a616e7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,1 +1,6 @@
+2011-12-01 Eric Blake <ebl...@redhat.com>
+
+ mktempd: silence dd usage
+ * build-aux/mktempd (rand_bytes): Silence dd.
+
2011-11-30 Simon Josefsson <si...@josefsson.org>
manywarnings: Don't mention gcc version in docstring.
diff --git a/build-aux/mktempd b/build-aux/mktempd
index 7a09a4b..b6360e4 100755
--- a/build-aux/mktempd
+++ b/build-aux/mktempd
@@ -30,35 +30,36 @@
# the desired directory.
# - make only $MAX_TRIES attempts
ME=`basename "$0"`
die() { echo >&2 "$ME: $@"; exit 1; }
MAX_TRIES=4
rand_bytes()
{
n=$1
chars=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
dev_rand=/dev/urandom
if test -r "$dev_rand"; then
# Note: 256-length($chars) == 194; 3 copies of $chars is 186 + 8 = 194.
- dd ibs=$n count=1 if="$dev_rand" | tr -c $chars 01234567$chars$chars$chars
+ dd ibs=$n count=1 if="$dev_rand" 2>/dev/null \
+ | tr -c $chars 01234567$chars$chars$chars
return
fi
cmds='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n'
data=` (eval "$cmds") 2>&1 | gzip `
n_plus_50=`expr $n + 50`
# Ensure that $data has length at least 50+$n
while :; do
len=`echo "$data"|wc -c`
test $n_plus_50 -le $len && break;
data=` (echo "$data"; eval "$cmds") 2>&1 | gzip `
done
echo "$data" \
| dd bs=1 skip=50 count=$n 2>/dev/null \
--
1.7.7.3
