diff options
Diffstat (limited to 'tests/38-basic-pfc_coverage.c')
| -rw-r--r-- | tests/38-basic-pfc_coverage.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/tests/38-basic-pfc_coverage.c b/tests/38-basic-pfc_coverage.c new file mode 100644 index 0000000..c6829ac --- /dev/null +++ b/tests/38-basic-pfc_coverage.c @@ -0,0 +1,131 @@ +/** + * Seccomp Library test program + * + * Copyright (c) 2017 Red Hat <pmoore@redhat.com> + * Author: Paul Moore <paul@paul-moore.com> + */ + +/* + * This library is free software; you can redistribute it and/or modify it + * under the terms of version 2.1 of the GNU Lesser General Public License as + * published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; if not, see <http://www.gnu.org/licenses>. + */ + +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <seccomp.h> + +#include "util.h" + +int main(int argc, char *argv[]) +{ + int rc; + int fd; + scmp_filter_ctx ctx = NULL; + + /* stdout */ + fd = 1; + + rc = seccomp_api_set(3); + if (rc != 0) + return EOPNOTSUPP; + + ctx = seccomp_init(SCMP_ACT_ALLOW); + if (ctx == NULL) { + rc = ENOMEM; + goto out; + } + + rc = seccomp_arch_remove(ctx, SCMP_ARCH_NATIVE); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_X86_64); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_X86); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_X32); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_ARM); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_AARCH64); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_MIPSEL); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_MIPSEL64); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_MIPSEL64N32); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_PPC64LE); + if (rc < 0) + goto out; + rc = seccomp_arch_add(ctx, SCMP_ARCH_RISCV64); + if (rc < 0) + goto out; + + /* NOTE: the syscalls and their arguments have been picked to achieve + * the highest possible code coverage, this is not a useful + * real world filter configuration */ + + rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(open), 0); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(read), 4, + SCMP_A0(SCMP_CMP_EQ, 0), + SCMP_A1(SCMP_CMP_GE, 1), + SCMP_A2(SCMP_CMP_GT, 2), + SCMP_A3(SCMP_CMP_MASKED_EQ, 0x0f, 3)); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_TRAP, SCMP_SYS(write), 3, + SCMP_A0(SCMP_CMP_NE, 0), + SCMP_A1(SCMP_CMP_LE, 1), + SCMP_A2(SCMP_CMP_LT, 2)); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_ERRNO(1), SCMP_SYS(close), 0); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_TRACE(1), SCMP_SYS(exit), 0); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_KILL_PROCESS, SCMP_SYS(fstat), 0); + if (rc < 0) + goto out; + rc = seccomp_rule_add(ctx, SCMP_ACT_LOG, SCMP_SYS(exit_group), 0); + if (rc < 0) + goto out; + + /* verify the prioritized, but no-rule, syscall */ + rc = seccomp_syscall_priority(ctx, SCMP_SYS(poll), 255); + if (rc < 0) + goto out; + + rc = seccomp_export_pfc(ctx, fd); + if (rc < 0) + goto out; + +out: + seccomp_release(ctx); + close(fd); + return (rc < 0 ? -rc : rc); +} |