release/src/router/busybox/archival/bbunzip_test3.sh

   1 #!/bin/sh
   2 # Leak test for gunzip. Watch top for growing process size.
   3 # In this case we look for leaks in "concatenated .gz" code -
   4 # we feed gunzip with a stream of .gz files.
   5
   6 i=$PID
   7 c=0
   8 while true; do
   9     c=$((c + 1))
  10     echo "Block# $c" >&2
  11     # RANDOM is not very random on some shells. Spice it up.
  12     i=$((i * 1664525 + 1013904223))
  13     # 100003 is prime
  14     len=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
  15
  16     # Just using urandom will make gzip use method 0 (store) -
  17     # not good for test coverage!
  18     cat /dev/urandom \
  19     | while true; do read junk; echo "junk $c $i $junk"; done \
  20     | dd bs=$len count=1 2>/dev/null \
  21     | gzip >xxx.gz
  22     cat xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz
  23 done | ../busybox gunzip -c >/dev/null