diff options
Diffstat (limited to 'tools/scmp_bpf_sim.c')
| -rw-r--r-- | tools/scmp_bpf_sim.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/tools/scmp_bpf_sim.c b/tools/scmp_bpf_sim.c index a53b4fd..6b70105 100644 --- a/tools/scmp_bpf_sim.c +++ b/tools/scmp_bpf_sim.c @@ -52,6 +52,22 @@ struct bpf_program { static unsigned int opt_verbose = 0; /** + * Print the usage information to stderr and exit + * @param program the name of the current program being invoked + * + * Print the usage information and exit with EINVAL. + * + */ +static void exit_usage(const char *program) +{ + fprintf(stderr, + "usage: %s -f <bpf_file> [-v] [-h]" + " -a <arch> -s <syscall_num> [-0 <a0>] ... [-5 <a5>]\n", + program); + exit(EINVAL); +} + +/** * Handle a simulator fault * @param rc the error or return code * @@ -224,7 +240,7 @@ int main(int argc, char *argv[]) memset(&sys_data, 0, sizeof(sys_data)); /* parse the command line */ - while ((opt = getopt(argc, argv, "a:f:h:s:v0:1:2:3:4:5:")) > 0) { + while ((opt = getopt(argc, argv, "a:f:hs:v0:1:2:3:4:5:")) > 0) { switch (opt) { case 'a': if (strcmp(optarg, "x86") == 0) |