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| author | Alexander Bulekov | 2021-01-18 00:09:22 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2021-02-08 14:43:54 +0100 |
| commit | 8630b43f115d9736cbe9782f453a300ac3ba5af5 (patch) | |
| tree | 93265c442419f1750ea7e44d41fe1355df17b875 | |
| parent | fuzz: log the arguments used to initialize QEMU (diff) | |
| download | qemu-8630b43f115d9736cbe9782f453a300ac3ba5af5.tar.gz qemu-8630b43f115d9736cbe9782f453a300ac3ba5af5.tar.xz qemu-8630b43f115d9736cbe9782f453a300ac3ba5af5.zip | |
fuzz: enable dynamic args for generic-fuzz configs
For some device configurations, it is useful to configure some
resources, and adjust QEMU arguments at runtime, prior to fuzzing. This
patch adds an "argfunc" to generic the generic_fuzz_config. When
specified, it is responsible for configuring the resources and returning
a string containing the corresponding QEMU arguments. This can be useful
for targets that rely on e.g.:
* a temporary qcow2 image
* a temporary directory
* an unused TCP port used to bind the VNC server
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210117230924.449676-2-alxndr@bu.edu>
| -rw-r--r-- | tests/qtest/fuzz/generic_fuzz.c | 10 | ||||
| -rw-r--r-- | tests/qtest/fuzz/generic_fuzz_configs.h | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/tests/qtest/fuzz/generic_fuzz.c b/tests/qtest/fuzz/generic_fuzz.c index deb74f15be..ee8c17a04c 100644 --- a/tests/qtest/fuzz/generic_fuzz.c +++ b/tests/qtest/fuzz/generic_fuzz.c @@ -933,12 +933,20 @@ static GString *generic_fuzz_cmdline(FuzzTarget *t) static GString *generic_fuzz_predefined_config_cmdline(FuzzTarget *t) { + gchar *args; const generic_fuzz_config *config; g_assert(t->opaque); config = t->opaque; setenv("QEMU_AVOID_DOUBLE_FETCH", "1", 1); - setenv("QEMU_FUZZ_ARGS", config->args, 1); + if (config->argfunc) { + args = config->argfunc(); + setenv("QEMU_FUZZ_ARGS", args, 1); + g_free(args); + } else { + g_assert_nonnull(config->args); + setenv("QEMU_FUZZ_ARGS", config->args, 1); + } setenv("QEMU_FUZZ_OBJECTS", config->objects, 1); return generic_fuzz_cmdline(t); } diff --git a/tests/qtest/fuzz/generic_fuzz_configs.h b/tests/qtest/fuzz/generic_fuzz_configs.h index aa4c03f1ae..51e69c6e42 100644 --- a/tests/qtest/fuzz/generic_fuzz_configs.h +++ b/tests/qtest/fuzz/generic_fuzz_configs.h @@ -16,6 +16,7 @@ typedef struct generic_fuzz_config { const char *name, *args, *objects; + gchar* (*argfunc)(void); /* Result must be freeable by g_free() */ } generic_fuzz_config; const generic_fuzz_config predefined_configs[] = { |