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dispol: add --help option

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Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Acked-by: James Carter <jwcart2@gmail.com>
This commit is contained in:
Masatake YAMATO 2023-06-08 10:52:38 +09:00 committed by James Carter
parent 6360af7a98
commit f78eea5a34
1 changed files with 6 additions and 2 deletions
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8
checkpolicy/test/dispol.c
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@ -38,7 +38,11 @@ static policydb_t policydb;
static __attribute__((__noreturn__)) void usage(const char *progname)
{
printf("usage: %s binary_pol_file\n\n", progname);
puts("Usage:");
printf(" %s [OPTIONS] binary_pol_file\n\n", progname);
puts("Options:");
puts(" -h, --help print this help message");
puts("\n");
exit(1);
}
@ -481,7 +485,7 @@ int main(int argc, char **argv)
int state;
struct policy_file pf;
if (argc != 2)
if (argc < 2 || strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0)
usage(argv[0]);
fd = open(argv[1], O_RDONLY);