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      1 #!/bin/sh
      2 #
      3 # Check mmap/mmap2, madvise, mlockall, mprotect, mremap, msync, and munmap
      4 # syscalls decoding.
      5 #
      6 # Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at] altlinux.org>
      7 # All rights reserved.
      8 #
      9 # Redistribution and use in source and binary forms, with or without
     10 # modification, are permitted provided that the following conditions
     11 # are met:
     12 # 1. Redistributions of source code must retain the above copyright
     13 #    notice, this list of conditions and the following disclaimer.
     14 # 2. Redistributions in binary form must reproduce the above copyright
     15 #    notice, this list of conditions and the following disclaimer in the
     16 #    documentation and/or other materials provided with the distribution.
     17 # 3. The name of the author may not be used to endorse or promote products
     18 #    derived from this software without specific prior written permission.
     19 #
     20 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 
     31 . "${srcdir=.}/init.sh"
     32 
     33 check_prog grep
     34 check_prog sed
     35 run_prog > /dev/null
     36 
     37 syscall=
     38 for n in mmap mmap2; do
     39 	$STRACE -e$n -h > /dev/null && syscall=$syscall,$n
     40 done
     41 run_strace -e$syscall $args > /dev/null
     42 
     43 if grep '^mmap(NULL, 0, PROT_NONE,' < "$LOG" > /dev/null; then
     44 	mmap=mmap
     45 elif grep '^mmap2(NULL, 0, PROT_NONE,' < "$LOG" > /dev/null; then
     46 	mmap=mmap2
     47 else
     48 	dump_log_and_fail_with "mmap/mmap2 not found in $STRACE $args output"
     49 fi
     50 
     51 syscall=$mmap,madvise,mlockall,mprotect,mremap,msync,munmap
     52 
     53 run_prog "./$NAME" $mmap > /dev/null
     54 run_strace -a20 -e$syscall $args > "$EXP"
     55 sed -n "/^$mmap(NULL, 0, PROT_NONE,/,\$p" < "$LOG" > "$OUT"
     56 match_diff "$OUT" "$EXP"
     57 
     58 rm -f "$EXP" "$OUT"
     59