65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
// RUN: %clangxx -fsanitize=realtime -DIS_NONBLOCKING=1 %s -o %t
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// RUN: %env_rtsan_opts="halt_on_error=true" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-HALT
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// RUN: %env_rtsan_opts="halt_on_error=false" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NOHALT
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// RUN: %clangxx -fsanitize=realtime -DIS_NONBLOCKING=0 %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-OK
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// RUN: %env_rtsan_opts="halt_on_error=false" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-OK
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// UNSUPPORTED: ios
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// Intent: Ensure fork/exec dies when realtime and survives otherwise
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// This behavior is difficult to test in a gtest, because the process is
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// wiped away with exec.
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#if IS_NONBLOCKING
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# define MAYBE_NONBLOCKING [[clang::nonblocking]]
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#else
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# define MAYBE_NONBLOCKING
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#endif
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int main() MAYBE_NONBLOCKING {
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const pid_t pid = fork();
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if (pid == 0) {
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char *args[] = {"/bin/ls", nullptr};
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execve(args[0], args, nullptr);
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perror("execve failed");
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return 1;
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} else if (pid > 0) {
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int status;
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waitpid(pid, &status, 0);
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usleep(1);
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} else {
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perror("fork failed");
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return 1;
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}
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printf("fork/exec succeeded\n");
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return 0;
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}
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// CHECK-NOHALT: Intercepted call to {{.*}} `fork` {{.*}}
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// We should also get some other intercepted call. On some systems this
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// is `execve`, on others, it's a lock to set up `execve`. In either
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// case, just check that we get a second intercepted call, don't sweat
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// the name.
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// CHECK-NOHALT: Intercepted call to {{.*}}
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// usleep checks that rtsan is still enabled in the parent process
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// See note in our interceptors file for why we don't look for `wait`
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// CHECK-NOHALT: Intercepted call to {{.*}} `usleep` {{.*}}
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// CHECK-NOHALT: fork/exec succeeded
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// CHECK-HALT: ==ERROR: RealtimeSanitizer: unsafe-library-call
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// CHECK-HALT-NEXT: Intercepted call to {{.*}} `fork` {{.*}}
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// CHECK-OK: fork/exec succeeded
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