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51 lines
897 B
51 lines
897 B
4 months ago
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#!/bin/sh -efu
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# Check decoding of return values injected into a syscall that "never fails".
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. "${srcdir=.}/scno_tampering.sh"
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case "$STRACE_ARCH" in
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alpha)
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SYSCALL=getpgrp
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;;
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*)
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SYSCALL=getpid
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;;
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esac
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run_prog
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prog="$args"
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fault_args="-a9 -e trace=${SYSCALL} -e inject=${SYSCALL}:retval="
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test_rval()
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{
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local rval
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rval="$1"; shift
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run_strace $fault_args$rval $prog $rval > "$EXP"
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match_diff "$LOG" "$EXP"
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}
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test_rval 0
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test_rval 1
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test_rval 0x7fffffff
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test_rval 0x80000000
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test_rval 0xfffff000
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test_rval 0xfffffffe
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test_rval 0xffffffff
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case "$SIZEOF_KERNEL_LONG_T" in
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8)
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test_rval 0x80000000
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test_rval 0xfffff000
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test_rval 0xfffffffe
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test_rval 0xffffffff
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test_rval 0x100000000
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test_rval 0x7fffffffffffffff
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test_rval 0x8000000000000000
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test_rval 0xfffffffffffff000
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test_rval 0xfffffffffffffffe
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test_rval 0xffffffffffffffff
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;;
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esac
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