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fuzz: Add support for logging QTest commands

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Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200529221450.26673-3-alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Alexander Bulekov 2020-05-29 18:14:50 -04:00 committed by Thomas Huth
parent d92e1b6d54
commit 8efebd4e01
1 changed files with 8 additions and 1 deletions
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9
tests/qtest/fuzz/fuzz.c
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@ -94,7 +94,9 @@ static void usage(char *path)
printf("Alternatively, add -target-FUZZ_TARGET to the executable name\n\n"
"Set the environment variable FUZZ_SERIALIZE_QTEST=1 to serialize\n"
"QTest commands into an ASCII protocol. Useful for building crash\n"
"reproducers, but slows down execution.\n");
"reproducers, but slows down execution.\n\n"
"Set the environment variable QTEST_LOG=1 to log all qtest commands"
"\n");
exit(0);
}
@ -197,6 +199,11 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char ***envp)
/* Run QEMU's softmmu main with the fuzz-target dependent arguments */
const char *init_cmdline = fuzz_target->get_init_cmdline(fuzz_target);
init_cmdline = g_strdup_printf("%s -qtest /dev/null -qtest-log %s",
init_cmdline,
getenv("QTEST_LOG") ? "/dev/fd/2"
: "/dev/null");
/* Split the runcmd into an argv and argc */
wordexp_t result;