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1 | /** | |
2 | * Syscall resolver | |
3 | * | |
4 | * Copyright (c) 2012 Red Hat <pmoore@redhat.com> | |
5 | * Author: Paul Moore <paul@paul-moore.com> | |
6 | */ | |
7 | ||
8 | /* | |
9 | * This library is free software; you can redistribute it and/or modify it | |
10 | * under the terms of version 2.1 of the GNU Lesser General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
16 | * for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this library; if not, see <http://www.gnu.org/licenses>. | |
20 | */ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <ctype.h> | |
26 | #include <string.h> | |
27 | #include <unistd.h> | |
28 | ||
29 | #include <seccomp.h> | |
30 | ||
31 | /** | |
32 | * Print the usage information to stderr and exit | |
33 | * @param program the name of the current program being invoked | |
34 | * | |
35 | * Print the usage information and exit with EINVAL. | |
36 | * | |
37 | */ | |
38 | static void exit_usage(const char *program) | |
39 | { | |
40 | fprintf(stderr, | |
41 | "usage: %s [-h] [-a <arch>] [-t] <name>|<number>\n", | |
42 | program); | |
43 | exit(EINVAL); | |
44 | } | |
45 | ||
46 | /** | |
47 | * main | |
48 | */ | |
49 | int main(int argc, char *argv[]) | |
50 | { | |
51 | int opt; | |
52 | int translate = 0; | |
53 | uint32_t arch; | |
54 | int sys_num; | |
55 | const char *sys_name; | |
56 | ||
57 | arch = seccomp_arch_native(); | |
58 | ||
59 | /* parse the command line */ | |
60 | while ((opt = getopt(argc, argv, "a:ht")) > 0) { | |
61 | switch (opt) { | |
62 | case 'a': | |
63 | arch = seccomp_arch_resolve_name(optarg); | |
64 | if (arch == 0) | |
65 | exit_usage(argv[0]); | |
66 | break; | |
67 | case 't': | |
68 | translate = 1; | |
69 | break; | |
70 | case 'h': | |
71 | default: | |
72 | /* usage information */ | |
73 | exit_usage(argv[0]); | |
74 | } | |
75 | } | |
76 | ||
77 | /* sanity checks */ | |
78 | if (optind >= argc) | |
79 | exit_usage(argv[0]); | |
80 | ||
81 | /* perform the syscall lookup */ | |
82 | if (isdigit(argv[optind][0]) || argv[optind][0] == '-') { | |
83 | sys_num = atoi(argv[optind]); | |
84 | sys_name = seccomp_syscall_resolve_num_arch(arch, sys_num); | |
85 | printf("%s\n", (sys_name ? sys_name : "UNKNOWN")); | |
86 | } else if (translate) { | |
87 | sys_num = seccomp_syscall_resolve_name_rewrite(arch, | |
88 | argv[optind]); | |
89 | printf("%d\n", sys_num); | |
90 | } else { | |
91 | sys_num = seccomp_syscall_resolve_name_arch(arch, argv[optind]); | |
92 | printf("%d\n", sys_num); | |
93 | } | |
94 | ||
95 | return 0; | |
96 | } |