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102 lines
3.4 KiB
102 lines
3.4 KiB
// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONFD -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONCRED -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONLEN -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONLEVEL -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONTYPE -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONLEN2 -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONLEVEL2 -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -DPOISONTYPE2 -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=SENDMSG
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// RUN: %clangxx_msan %s -std=c++11 -DSENDMSG -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=NEGATIVE
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// UNSUPPORTED: android
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#include <assert.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <netdb.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sanitizer/msan_interface.h>
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const int kBufSize = 10;
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int main() {
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int ret;
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char buf[kBufSize] = {0};
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pthread_t client_thread;
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struct sockaddr_un serveraddr;
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int sock[2];
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ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sock);
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assert(ret == 0);
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int sockfd = sock[0];
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struct iovec iov[] = {{buf, 10}};
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struct msghdr msg = {0};
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msg.msg_iov = iov;
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msg.msg_iovlen = 1;
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msg.msg_flags = 0;
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static const int kNumFds = 3;
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char controlbuf[CMSG_SPACE(kNumFds * sizeof(int)) +
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CMSG_SPACE(sizeof(struct ucred))];
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msg.msg_control = &controlbuf;
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msg.msg_controllen = sizeof(controlbuf);
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struct cmsghdr *cmsg = (struct cmsghdr *)&controlbuf;
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assert(cmsg);
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int myfds[kNumFds];
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for (int &fd : myfds)
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fd = sockfd;
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#ifdef POISONFD
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__msan_poison(&myfds[1], sizeof(int));
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#endif
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cmsg->cmsg_level = SOL_SOCKET;
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cmsg->cmsg_type = SCM_RIGHTS;
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cmsg->cmsg_len = CMSG_LEN(kNumFds * sizeof(int));
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memcpy(CMSG_DATA(cmsg), myfds, kNumFds * sizeof(int));
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#ifdef POISONLEVEL
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__msan_poison(&cmsg->cmsg_level, sizeof(cmsg->cmsg_level));
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#endif
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#ifdef POISONTYPE
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__msan_poison(&cmsg->cmsg_type, sizeof(cmsg->cmsg_type));
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#endif
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#ifdef POISONLEN
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__msan_poison(&cmsg->cmsg_len, sizeof(cmsg->cmsg_len));
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#endif
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cmsg = (struct cmsghdr *)(&controlbuf[CMSG_SPACE(kNumFds * sizeof(int))]);
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assert(cmsg);
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struct ucred cred = {getpid(), getuid(), getgid()};
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#ifdef POISONCRED
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__msan_poison(&cred.uid, sizeof(cred.uid));
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#endif
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cmsg->cmsg_level = SOL_SOCKET;
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cmsg->cmsg_type = SCM_CREDENTIALS;
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cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
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memcpy(CMSG_DATA(cmsg), &cred, sizeof(struct ucred));
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#ifdef POISONLEVEL2
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__msan_poison(&cmsg->cmsg_level, sizeof(cmsg->cmsg_level));
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#endif
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#ifdef POISONTYPE2
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__msan_poison(&cmsg->cmsg_type, sizeof(cmsg->cmsg_type));
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#endif
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#ifdef POISONLEN2
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__msan_poison(&cmsg->cmsg_len, sizeof(cmsg->cmsg_len));
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#endif
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ret = sendmsg(sockfd, &msg, 0);
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// SENDMSG: MemorySanitizer: use-of-uninitialized-value
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if (ret == -1) printf("%d: %s\n", errno, strerror(errno));
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assert(ret > 0);
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fprintf(stderr, "== done\n");
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// NEGATIVE: == done
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return 0;
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}
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