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8ac5aef8f3
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
1.0 KiB
C
43 lines
1.0 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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