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-rw-r--r--sandbox/linux/seccomp/access.cc97
1 files changed, 0 insertions, 97 deletions
diff --git a/sandbox/linux/seccomp/access.cc b/sandbox/linux/seccomp/access.cc
deleted file mode 100644
index fbe7e53..0000000
--- a/sandbox/linux/seccomp/access.cc
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "debug.h"
-#include "sandbox_impl.h"
-
-namespace playground {
-
-long Sandbox::sandbox_access(const char *pathname, int mode) {
- long long tm;
- Debug::syscall(&tm, __NR_access, "Executing handler");
- size_t len = strlen(pathname);
- struct Request {
- int sysnum;
- long long cookie;
- Access access_req;
- char pathname[0];
- } __attribute__((packed)) *request;
- char data[sizeof(struct Request) + len];
- request = reinterpret_cast<struct Request*>(data);
- request->sysnum = __NR_access;
- request->cookie = cookie();
- request->access_req.path_length = len;
- request->access_req.mode = mode;
- memcpy(request->pathname, pathname, len);
-
- long rc;
- SysCalls sys;
- if (write(sys, processFdPub(), request, sizeof(data)) != (int)sizeof(data) ||
- read(sys, threadFdPub(), &rc, sizeof(rc)) != sizeof(rc)) {
- die("Failed to forward access() request [sandbox]");
- }
- Debug::elapsed(tm, __NR_access);
- return rc;
-}
-
-bool Sandbox::process_access(int parentMapsFd, int sandboxFd, int threadFdPub,
- int threadFd, SecureMem::Args* mem) {
- // Read request
- SysCalls sys;
- Access access_req;
- if (read(sys, sandboxFd, &access_req, sizeof(access_req)) !=
- sizeof(access_req)) {
- read_parm_failed:
- die("Failed to read parameters for access() [process]");
- }
- int rc = -ENAMETOOLONG;
- if (access_req.path_length >= sizeof(mem->pathname)) {
- char buf[32];
- while (access_req.path_length > 0) {
- size_t len = access_req.path_length > sizeof(buf) ?
- sizeof(buf) : access_req.path_length;
- ssize_t i = read(sys, sandboxFd, buf, len);
- if (i <= 0) {
- goto read_parm_failed;
- }
- access_req.path_length -= i;
- }
- if (write(sys, threadFd, &rc, sizeof(rc)) != sizeof(rc)) {
- die("Failed to return data from access() [process]");
- }
- return false;
- }
-
- if (!g_policy.allow_file_namespace) {
- // After locking the mutex, we can no longer abandon the system call. So,
- // perform checks before clobbering the securely shared memory.
- char tmp[access_req.path_length];
- if (read(sys, sandboxFd, tmp, access_req.path_length) !=
- (ssize_t)access_req.path_length) {
- goto read_parm_failed;
- }
- Debug::message(("Denying access to \"" + std::string(tmp) + "\"").c_str());
- SecureMem::abandonSystemCall(threadFd, -EACCES);
- return false;
- }
-
- SecureMem::lockSystemCall(parentMapsFd, mem);
- if (read(sys, sandboxFd, mem->pathname, access_req.path_length) !=
- (ssize_t)access_req.path_length) {
- goto read_parm_failed;
- }
- mem->pathname[access_req.path_length] = '\000';
-
- // TODO(markus): Implement sandboxing policy
- Debug::message(("Allowing access to \"" + std::string(mem->pathname) +
- "\"").c_str());
-
- // Tell trusted thread to access the file.
- SecureMem::sendSystemCall(threadFdPub, true, parentMapsFd, mem, __NR_access,
- mem->pathname - (char*)mem + (char*)mem->self,
- access_req.mode);
- return true;
-}
-
-} // namespace