| 1 | /** |
| 2 | * Seccomp Library test program |
| 3 | * |
| 4 | * Author: Markos Chandras <markos.chandras@imgtec.com> |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This library is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of version 2.1 of the GNU Lesser General Public License as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License |
| 15 | * for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, see <http://www.gnu.org/licenses>. |
| 19 | */ |
| 20 | |
| 21 | #include <errno.h> |
| 22 | #include <unistd.h> |
| 23 | |
| 24 | #include <seccomp.h> |
| 25 | |
| 26 | #include "util.h" |
| 27 | |
| 28 | int main(int argc, char *argv[]) |
| 29 | { |
| 30 | int rc; |
| 31 | struct util_options opts; |
| 32 | scmp_filter_ctx ctx = NULL; |
| 33 | |
| 34 | rc = util_getopt(argc, argv, &opts); |
| 35 | if (rc < 0) |
| 36 | goto out; |
| 37 | |
| 38 | ctx = seccomp_init(SCMP_ACT_KILL); |
| 39 | if (ctx == NULL) |
| 40 | return ENOMEM; |
| 41 | |
| 42 | rc = seccomp_arch_remove(ctx, SCMP_ARCH_NATIVE); |
| 43 | if (rc != 0) |
| 44 | goto out; |
| 45 | |
| 46 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("mips")); |
| 47 | if (rc != 0) |
| 48 | goto out; |
| 49 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("mips64")); |
| 50 | if (rc != 0) |
| 51 | goto out; |
| 52 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("mips64n32")); |
| 53 | if (rc != 0) |
| 54 | goto out; |
| 55 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("ppc")); |
| 56 | if (rc != 0) |
| 57 | goto out; |
| 58 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("ppc64")); |
| 59 | if (rc != 0) |
| 60 | goto out; |
| 61 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("s390")); |
| 62 | if (rc != 0) |
| 63 | goto out; |
| 64 | rc = seccomp_arch_add(ctx, seccomp_arch_resolve_name("s390x")); |
| 65 | if (rc != 0) |
| 66 | goto out; |
| 67 | |
| 68 | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1, |
| 69 | SCMP_A0(SCMP_CMP_EQ, STDIN_FILENO)); |
| 70 | if (rc != 0) |
| 71 | goto out; |
| 72 | |
| 73 | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(write), 1, |
| 74 | SCMP_A0(SCMP_CMP_EQ, STDOUT_FILENO)); |
| 75 | if (rc != 0) |
| 76 | goto out; |
| 77 | |
| 78 | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(write), 1, |
| 79 | SCMP_A0(SCMP_CMP_EQ, STDERR_FILENO)); |
| 80 | if (rc != 0) |
| 81 | goto out; |
| 82 | |
| 83 | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(close), 0); |
| 84 | if (rc != 0) |
| 85 | goto out; |
| 86 | |
| 87 | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(rt_sigreturn), 0); |
| 88 | if (rc != 0) |
| 89 | goto out; |
| 90 | |
| 91 | rc = util_filter_output(&opts, ctx); |
| 92 | if (rc) |
| 93 | goto out; |
| 94 | |
| 95 | out: |
| 96 | seccomp_release(ctx); |
| 97 | return (rc < 0 ? -rc : rc); |
| 98 | } |