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https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
Bug 1041886 - Break out Linux sandbox logging into its own header. r=kang
This commit is contained in:
Jed Davis
parent
83a2b7df8e
commit
e0474ab18a
@ -4,7 +4,8 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Sandbox.h"
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#include "Sandbox.h"
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#include "SandboxLogging.h"
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#include <unistd.h>
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#include <stdio.h>
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@ -34,7 +35,6 @@
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#if defined(ANDROID)
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#include "android_ucontext.h"
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#include <android/log.h>
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#endif
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#include "linux_seccomp.h"
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@ -44,11 +44,6 @@
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#include "sandbox/linux/seccomp-bpf/die.h"
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namespace mozilla {
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#if defined(ANDROID)
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#define LOG_ERROR(args...) __android_log_print(ANDROID_LOG_ERROR, "Sandbox", ## args)
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#else
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#define LOG_ERROR(fmt, args...) fprintf(stderr, "Sandbox: " fmt "\n", ## args)
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#endif
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#ifdef MOZ_GMP_SANDBOX
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// For media plugins, we can start the sandbox before we dlopen the
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@ -77,7 +72,8 @@ struct SandboxFlags {
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// fail with EFAULT if supported and EINVAL if not, without
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// changing the process's state.
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if (prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, nullptr) != -1) {
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MOZ_CRASH("prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, nullptr) didn't fail");
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MOZ_CRASH("prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, nullptr)"
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" didn't fail");
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}
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isSupported = errno == EFAULT;
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}
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@ -120,12 +116,12 @@ SandboxLogJSStack(void)
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unused << frame->GetName(funName);
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if (!funName.IsVoid() || !fileName.IsVoid()) {
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LOG_ERROR("JS frame %d: %s %s line %d", i,
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funName.IsVoid() ?
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"(anonymous)" : NS_ConvertUTF16toUTF8(funName).get(),
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fileName.IsVoid() ?
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"(no file)" : NS_ConvertUTF16toUTF8(fileName).get(),
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lineNumber);
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SANDBOX_LOG_ERROR("JS frame %d: %s %s line %d", i,
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funName.IsVoid() ?
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"(anonymous)" : NS_ConvertUTF16toUTF8(funName).get(),
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fileName.IsVoid() ?
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"(no file)" : NS_ConvertUTF16toUTF8(fileName).get(),
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lineNumber);
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}
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nsCOMPtr<nsIStackFrame> nextFrame;
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@ -175,13 +171,13 @@ Reporter(int nr, siginfo_t *info, void *void_context)
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int flags = int(args[1]);
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if ((flags & O_ACCMODE) != O_RDONLY) {
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LOG_ERROR("non-read-only open of file %s attempted (flags=0%o)",
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path, flags);
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SANDBOX_LOG_ERROR("non-read-only open of file %s attempted (flags=0%o)",
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path, flags);
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} else if (strcmp(path, gMediaPluginFilePath) != 0) {
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LOG_ERROR("attempt to open file %s which is not the media plugin %s",
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path, gMediaPluginFilePath);
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SANDBOX_LOG_ERROR("attempt to open file %s which is not the media plugin"
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" %s", path, gMediaPluginFilePath);
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} else if (gMediaPluginFileDesc == -1) {
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LOG_ERROR("multiple opens of media plugin file unimplemented");
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SANDBOX_LOG_ERROR("multiple opens of media plugin file unimplemented");
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} else {
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SECCOMP_RESULT(ctx) = gMediaPluginFileDesc;
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gMediaPluginFileDesc = -1;
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@ -190,16 +186,17 @@ Reporter(int nr, siginfo_t *info, void *void_context)
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}
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#endif
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LOG_ERROR("seccomp sandbox violation: pid %d, syscall %lu, args %lu %lu %lu"
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" %lu %lu %lu. Killing process.", pid, syscall_nr,
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args[0], args[1], args[2], args[3], args[4], args[5]);
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SANDBOX_LOG_ERROR("seccomp sandbox violation: pid %d, syscall %lu,"
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" args %lu %lu %lu %lu %lu %lu. Killing process.",
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pid, syscall_nr,
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args[0], args[1], args[2], args[3], args[4], args[5]);
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#ifdef MOZ_CRASHREPORTER
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// Bug 1017393: record syscall number somewhere useful.
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info->si_addr = reinterpret_cast<void*>(syscall_nr);
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bool dumped = CrashReporter::WriteMinidumpForSigInfo(nr, info, void_context);
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if (!dumped) {
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LOG_ERROR("Failed to write minidump");
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SANDBOX_LOG_ERROR("Failed to write minidump");
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}
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#endif
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@ -266,13 +263,13 @@ static void
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InstallSyscallFilter(const sock_fprog *prog)
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{
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if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0)) {
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LOG_ERROR("prctl(PR_SET_NO_NEW_PRIVS) failed: %s", strerror(errno));
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SANDBOX_LOG_ERROR("prctl(PR_SET_NO_NEW_PRIVS) failed: %s", strerror(errno));
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MOZ_CRASH("prctl(PR_SET_NO_NEW_PRIVS)");
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}
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if (prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, (unsigned long)prog, 0, 0)) {
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LOG_ERROR("prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER) failed: %s",
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strerror(errno));
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SANDBOX_LOG_ERROR("prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER) failed: %s",
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strerror(errno));
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MOZ_CRASH("prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER)");
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}
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}
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@ -349,19 +346,19 @@ BroadcastSetThreadSandbox(SandboxType aType)
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myTid = syscall(__NR_gettid);
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taskdp = opendir("/proc/self/task");
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if (taskdp == nullptr) {
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LOG_ERROR("opendir /proc/self/task: %s\n", strerror(errno));
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SANDBOX_LOG_ERROR("opendir /proc/self/task: %s\n", strerror(errno));
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MOZ_CRASH();
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}
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signum = FindFreeSignalNumber();
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if (signum == 0) {
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LOG_ERROR("No available signal numbers!");
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SANDBOX_LOG_ERROR("No available signal numbers!");
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MOZ_CRASH();
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}
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void (*oldHandler)(int);
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oldHandler = signal(signum, SetThreadSandboxHandler);
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if (oldHandler != SIG_DFL) {
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// See the comment on FindFreeSignalNumber about race conditions.
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LOG_ERROR("signal %d in use by handler %p!\n", signum, oldHandler);
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SANDBOX_LOG_ERROR("signal %d in use by handler %p!\n", signum, oldHandler);
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MOZ_CRASH();
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}
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@ -388,12 +385,12 @@ BroadcastSetThreadSandbox(SandboxType aType)
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sSetSandboxDone = 0;
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if (syscall(__NR_tgkill, pid, tid, signum) != 0) {
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if (errno == ESRCH) {
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LOG_ERROR("Thread %d unexpectedly exited.", tid);
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SANDBOX_LOG_ERROR("Thread %d unexpectedly exited.", tid);
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// Rescan threads, in case it forked before exiting.
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sandboxProgress = true;
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continue;
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}
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LOG_ERROR("tgkill(%d,%d): %s\n", pid, tid, strerror(errno));
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SANDBOX_LOG_ERROR("tgkill(%d,%d): %s\n", pid, tid, strerror(errno));
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MOZ_CRASH();
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}
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// It's unlikely, but if the thread somehow manages to exit
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@ -420,7 +417,7 @@ BroadcastSetThreadSandbox(SandboxType aType)
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if (syscall(__NR_futex, reinterpret_cast<int*>(&sSetSandboxDone),
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FUTEX_WAIT, 0, &futexTimeout) != 0) {
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if (errno != EWOULDBLOCK && errno != ETIMEDOUT && errno != EINTR) {
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LOG_ERROR("FUTEX_WAIT: %s\n", strerror(errno));
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SANDBOX_LOG_ERROR("FUTEX_WAIT: %s\n", strerror(errno));
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MOZ_CRASH();
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}
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}
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@ -434,7 +431,7 @@ BroadcastSetThreadSandbox(SandboxType aType)
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// Has the thread ceased to exist?
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if (syscall(__NR_tgkill, pid, tid, 0) != 0) {
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if (errno == ESRCH) {
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LOG_ERROR("Thread %d unexpectedly exited.", tid);
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SANDBOX_LOG_ERROR("Thread %d unexpectedly exited.", tid);
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}
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// Rescan threads, in case it forked before exiting.
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// Also, if it somehow failed in a way that wasn't ESRCH,
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@ -447,8 +444,9 @@ BroadcastSetThreadSandbox(SandboxType aType)
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if (now.tv_sec > timeLimit.tv_nsec ||
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(now.tv_sec == timeLimit.tv_nsec &&
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now.tv_nsec > timeLimit.tv_nsec)) {
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LOG_ERROR("Thread %d unresponsive for %d seconds. Killing process.",
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tid, crashDelay);
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SANDBOX_LOG_ERROR("Thread %d unresponsive for %d seconds."
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" Killing process.",
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tid, crashDelay);
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MOZ_CRASH();
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}
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}
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@ -458,7 +456,8 @@ BroadcastSetThreadSandbox(SandboxType aType)
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oldHandler = signal(signum, SIG_DFL);
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if (oldHandler != SetThreadSandboxHandler) {
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// See the comment on FindFreeSignalNumber about race conditions.
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LOG_ERROR("handler for signal %d was changed to %p!", signum, oldHandler);
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SANDBOX_LOG_ERROR("handler for signal %d was changed to %p!",
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signum, oldHandler);
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MOZ_CRASH();
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}
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unused << closedir(taskdp);
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@ -471,7 +470,7 @@ static void
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SetCurrentProcessSandbox(SandboxType aType)
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{
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if (InstallSyscallReporter()) {
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LOG_ERROR("install_syscall_reporter() failed\n");
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SANDBOX_LOG_ERROR("install_syscall_reporter() failed\n");
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}
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BroadcastSetThreadSandbox(aType);
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@ -524,7 +523,8 @@ SetMediaPluginSandbox(const char *aFilePath)
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gMediaPluginFilePath = strdup(aFilePath);
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gMediaPluginFileDesc = open(aFilePath, O_RDONLY | O_CLOEXEC);
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if (gMediaPluginFileDesc == -1) {
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LOG_ERROR("failed to open plugin file %s: %s", aFilePath, strerror(errno));
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SANDBOX_LOG_ERROR("failed to open plugin file %s: %s",
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aFilePath, strerror(errno));
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MOZ_CRASH();
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}
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}
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@ -549,7 +549,7 @@ namespace sandbox {
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void
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Die::SandboxDie(const char* msg, const char* file, int line)
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{
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LOG_ERROR("%s:%d: %s\n", file, line, msg);
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SANDBOX_LOG_ERROR("%s:%d: %s\n", file, line, msg);
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_exit(127);
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}
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22
security/sandbox/linux/SandboxLogging.h
Normal file
22
security/sandbox/linux/SandboxLogging.h
Normal file
@ -0,0 +1,22 @@
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_SandboxLogging_h
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#define mozilla_SandboxLogging_h
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#if defined(ANDROID)
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#include <android/log.h>
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#else
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#include <stdio.h>
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#endif
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#if defined(ANDROID)
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#define SANDBOX_LOG_ERROR(args...) __android_log_print(ANDROID_LOG_ERROR, "Sandbox", ## args)
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#else
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#define SANDBOX_LOG_ERROR(fmt, args...) fprintf(stderr, "Sandbox: " fmt "\n", ## args)
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#endif
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#endif // mozilla_SandboxLogging_h
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