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This change takes capsicum-test from upstream and applies some local changes to make the tests work on FreeBSD when executed via Kyua. The local modifications are as follows: 1. Make `OpenatTest.WithFlag` pass with the new dot-dot lookup behavior in FreeBSD 12.x+. 2. capsicum-test references a set of helper binaries: `mini-me`, `mini-me.noexec`, and `mini-me.setuid`, as part of the execve/fexecve tests, via execve, fexecve, and open. It achieves this upstream by assuming `mini-me*` is in the current directory, however, in order for Kyua to execute `capsicum-test`, it needs to provide a full path to `mini-me*`. In order to achieve this, I made `capsicum-test` cache the executable's path from argv[0] in main(..) and use the cached value to compute the path to `mini-me*` as part of the execve/fexecve testcases. 3. The capsicum-test test suite assumes that it's always being run on CAPABILITIES enabled kernels. However, there's a chance that the test will be run on a host without a CAPABILITIES enabled kernel, so we must check for the support before running the tests. The way to achieve this is to add the relevant `feature_present("security_capabilities")` check to SetupEnvironment::SetUp() and skip the tests when the support is not available. While here, add a check for `kern.trap_enotcap` being enabled. As noted by markj@ in https://github.com/google/capsicum-test/issues/23, this sysctl being enabled can trigger non-deterministic failures. Therefore, the tests should be skipped if this sysctl is enabled. All local changes have been submitted to the capsicum-test project (https://github.com/google/capsicum-test) and are in various stages of review. Please see the following pull requests for more details: 1. https://github.com/google/capsicum-test/pull/35 2. https://github.com/google/capsicum-test/pull/41 3. https://github.com/google/capsicum-test/pull/42 Reviewed by: asomers Discussed with: emaste, markj Approved by: emaste (mentor) MFC after: 2 months Differential Revision: https://reviews.freebsd.org/D19758
43 lines
1 KiB
C
43 lines
1 KiB
C
#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#ifdef __FreeBSD__
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#include <sys/procdesc.h>
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#endif
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#ifdef __linux__
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#include <sys/syscall.h>
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int pdfork(int *fd, int flags) {
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return syscall(__NR_pdfork, fd, flags);
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}
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#endif
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int main() {
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int procfd;
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int rc = pdfork(&procfd, 0);
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if (rc < 0) {
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fprintf(stderr, "pdfork() failed rc=%d errno=%d %s\n", rc, errno, strerror(errno));
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exit(1);
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}
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if (rc == 0) { // Child process
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sleep(1);
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exit(123);
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}
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fprintf(stderr, "pdfork()ed child pid=%ld procfd=%d\n", (long)rc, procfd);
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sleep(2); // Allow child to complete
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pid_t child = waitpid(-1, &rc, WNOHANG);
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if (child == 0) {
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fprintf(stderr, "waitpid(): no completed child found\n");
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} else if (child < 0) {
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fprintf(stderr, "waitpid(): failed errno=%d %s\n", errno, strerror(errno));
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} else {
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fprintf(stderr, "waitpid(): found completed child %ld\n", (long)child);
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}
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return 0;
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}
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