12d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t 2>&1 22d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t 2>&1 32887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 42887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <assert.h> 52887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <errno.h> 62887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <glob.h> 72887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <stdio.h> 82887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <string.h> 92887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 10bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov#include <linux/aio_abi.h> 113ee98e37856935ac1d79d51364df73ce00d8218eEvgeniy Stepanov#include <sys/ptrace.h> 12639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov#include <sys/stat.h> 13639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov 142887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <sanitizer/linux_syscall_hooks.h> 152887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov#include <sanitizer/msan_interface.h> 162887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 172887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov/* Test the presence of __sanitizer_syscall_ in the tool runtime, and general 182887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov sanity of their behaviour. */ 192887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 202887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanovint main(int argc, char *argv[]) { 212887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov char buf[1000]; 222887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov const int kTen = 10; 23639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov const int kFortyTwo = 42; 242887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov memset(buf, 0, sizeof(buf)); 252887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_unpoison(buf, sizeof(buf)); 262887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_pre_recvmsg(0, buf, 0); 272887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_pre_rt_sigpending(buf, kTen); 282887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_pre_getdents(0, buf, kTen); 292887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_pre_getdents64(0, buf, kTen); 302887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 312887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_unpoison(buf, sizeof(buf)); 322887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_recvmsg(0, 0, buf, 0); 332887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_rt_sigpending(-1, buf, kTen); 342887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_getdents(0, 0, buf, kTen); 352887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_getdents64(0, 0, buf, kTen); 362887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == -1); 372887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 382887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_unpoison(buf, sizeof(buf)); 392887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_recvmsg(kTen, 0, buf, 0); 402887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 412887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov // Tell the kernel that the output struct size is 10 bytes, verify that those 422887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov // bytes are unpoisoned, and the next byte is not. 432887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_poison(buf, kTen + 1); 442887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_rt_sigpending(0, buf, kTen); 452887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == kTen); 462887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 472887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_poison(buf, kTen + 1); 482887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_getdents(kTen, 0, buf, kTen); 492887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == kTen); 502887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov 512887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __msan_poison(buf, kTen + 1); 522887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov __sanitizer_syscall_post_getdents64(kTen, 0, buf, kTen); 532887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == kTen); 548b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov 558b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __msan_poison(buf, sizeof(buf)); 568b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __sanitizer_syscall_post_clock_getres(0, 0, buf); 578b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2); 588b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov 598b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __msan_poison(buf, sizeof(buf)); 608b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __sanitizer_syscall_post_clock_gettime(0, 0, buf); 618b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2); 628b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov 638b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov // Failed syscall does not write to the buffer. 648b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __msan_poison(buf, sizeof(buf)); 658b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov __sanitizer_syscall_post_clock_gettime(-1, 0, buf); 668b40073a28ed435862e250ae01b8ff85d6a2063fEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == 0); 679d34659cd3570423fb1fa49248887e2bd4b762f9Evgeniy Stepanov 689d34659cd3570423fb1fa49248887e2bd4b762f9Evgeniy Stepanov __msan_poison(buf, sizeof(buf)); 699d34659cd3570423fb1fa49248887e2bd4b762f9Evgeniy Stepanov __sanitizer_syscall_post_read(5, 42, buf, 10); 709d34659cd3570423fb1fa49248887e2bd4b762f9Evgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == 5); 71639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov 72639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov __msan_poison(buf, sizeof(buf)); 73639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov __sanitizer_syscall_post_newfstatat(0, 5, "/path/to/file", buf, 0); 74639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(struct stat)); 75639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov 76639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov __msan_poison(buf, sizeof(buf)); 77639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov int prio = 0; 78639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov __sanitizer_syscall_post_mq_timedreceive(kFortyTwo, 5, buf, sizeof(buf), &prio, 0); 79639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == kFortyTwo); 80639df402c4925acd3ea7bebff729a535e3f79964Evgeniy Stepanov assert(__msan_test_shadow(&prio, sizeof(prio)) == -1); 813ee98e37856935ac1d79d51364df73ce00d8218eEvgeniy Stepanov 823ee98e37856935ac1d79d51364df73ce00d8218eEvgeniy Stepanov __msan_poison(buf, sizeof(buf)); 833ee98e37856935ac1d79d51364df73ce00d8218eEvgeniy Stepanov __sanitizer_syscall_post_ptrace(0, PTRACE_PEEKUSER, kFortyTwo, 0xABCD, buf); 843ee98e37856935ac1d79d51364df73ce00d8218eEvgeniy Stepanov assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(void *)); 85bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov 86bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov __msan_poison(buf, sizeof(buf)); 87bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov struct iocb iocb[2]; 88bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov struct iocb *iocbp[2] = { &iocb[0], &iocb[1] }; 89bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov memset(iocb, 0, sizeof(iocb)); 90bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[0].aio_lio_opcode = IOCB_CMD_PREAD; 91bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[0].aio_buf = (__u64)buf; 92bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[0].aio_nbytes = kFortyTwo; 93bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[1].aio_lio_opcode = IOCB_CMD_PREAD; 94bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[1].aio_buf = (__u64)(&buf[kFortyTwo]); 95bd65956821ebe3f4e1fb0b57892a5a443ad50c6fEvgeniy Stepanov iocb[1].aio_nbytes = kFortyTwo; 962d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines __sanitizer_syscall_pre_io_submit(0, 2, &iocbp); 972d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines assert(__msan_test_shadow(buf, sizeof(buf)) == 2 * kFortyTwo); 982d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 992d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines __msan_poison(buf, sizeof(buf)); 1002d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines char *p = buf; 1012d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines __msan_poison(&p, sizeof(p)); 1022d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines __sanitizer_syscall_post_io_setup(0, 1, &p); 1032d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines assert(__msan_test_shadow(&p, sizeof(p)) == -1); 1042d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines assert(__msan_test_shadow(buf, sizeof(buf)) >= 32); 1052d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 1062887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov return 0; 1072887a64cb7b82fc2dcbe4b1fcc33562077ec371aEvgeniy Stepanov} 108