2a408f200c
The compler-rt test case tsan/Linux/clone_setns.cpp fails on PowerPC64 RHEL 7.9 targets. Unshare fails with errno code EINVAL. It is unclear why this happens specifically on RHEL 7.9 and no other operating system like Ubuntu 18 or RHEL 8.4 for example. This patch uses marcos to disable the test case for ppc64 rhel7.9 because there are no XFAIL directives to target rhel 7.9 specifically. Reviewed By: dvyukov Differential Revision: https://reviews.llvm.org/D130086
54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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// The test models how sandbox2 unshares user namespace after clone:
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// https://github.com/google/sandboxed-api/blob/c95837a6c131fbdf820db352a97d54fcbcbde6c0/sandboxed_api/sandbox2/forkserver.cc#L249
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// which works only in sigle-threaded processes.
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#include "../test.h"
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#include <errno.h>
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#include <sched.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#ifdef __linux__
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# include <linux/version.h>
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#endif
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#if __PPC64__ && RHEL_MAJOR == 7 && RHEL_MINOR == 9
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# define PPC64_RHEL7_9 1
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#endif
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#ifndef PPC64_RHEL7_9
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static int cloned(void *arg) {
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// Unshare can fail for other reasons, e.g. no permissions,
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// so check only the error we are interested in:
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// if the process is multi-threaded unshare must return EINVAL.
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if (unshare(CLONE_NEWUSER) && errno == EINVAL) {
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fprintf(stderr, "unshare failed: %d\n", errno);
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exit(1);
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}
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exit(0);
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return 0;
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}
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#endif
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int main() {
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#ifndef PPC64_RHEL7_9
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char stack[64 << 10] __attribute__((aligned(64)));
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int pid = clone(cloned, stack + sizeof(stack), SIGCHLD, 0);
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if (pid == -1) {
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fprintf(stderr, "failed to clone: %d\n", errno);
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exit(1);
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}
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int status = 0;
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while (wait(&status) != pid) {
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}
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
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fprintf(stderr, "child failed: %d\n", status);
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exit(1);
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}
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#endif
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fprintf(stderr, "DONE\n");
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}
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// CHECK: DONE
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