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6734ab3914
Include header file without absolute path if the header file belongs to the same directory as source file.
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "vmo.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <fuchsia/io/cpp/fidl.h>
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#include <fuchsia/mem/cpp/fidl.h>
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#include <lib/fdio/directory.h>
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#include <lib/fdio/io.h>
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#include <lib/syslog/global.h>
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#include <zircon/status.h>
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#include "logging.h"
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namespace {
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bool VmoFromFd(int fd, bool executable, fuchsia::mem::Buffer* buffer) {
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if (!buffer) {
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FX_LOG(FATAL, LOG_TAG, "Invalid buffer pointer");
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}
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struct stat stat_struct;
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if (fstat(fd, &stat_struct) == -1) {
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FX_LOGF(ERROR, LOG_TAG, "fstat failed: %s", strerror(errno));
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return false;
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}
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zx_handle_t result = ZX_HANDLE_INVALID;
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zx_status_t status;
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if (executable) {
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status = fdio_get_vmo_exec(fd, &result);
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} else {
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status = fdio_get_vmo_copy(fd, &result);
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}
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if (status != ZX_OK) {
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return false;
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}
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buffer->vmo = zx::vmo(result);
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buffer->size = stat_struct.st_size;
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return true;
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}
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} // namespace
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namespace dart_utils {
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bool VmoFromFilename(const std::string& filename,
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bool executable,
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fuchsia::mem::Buffer* buffer) {
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// Note: the implementation here cannot be shared with VmoFromFilenameAt
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// because fdio_open_fd_at does not aim to provide POSIX compatibility, and
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// thus does not handle AT_FDCWD as dirfd.
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uint32_t flags = fuchsia::io::OPEN_RIGHT_READABLE |
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(executable ? fuchsia::io::OPEN_RIGHT_EXECUTABLE : 0);
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zx_status_t status;
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int fd;
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status = fdio_open_fd(filename.c_str(), flags, &fd);
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if (status != ZX_OK) {
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FX_LOGF(ERROR, LOG_TAG, "fdio_open_fd(\"%s\", %08x) failed: %s",
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filename.c_str(), flags, zx_status_get_string(status));
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return false;
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}
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bool result = VmoFromFd(fd, executable, buffer);
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close(fd);
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return result;
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}
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bool VmoFromFilenameAt(int dirfd,
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const std::string& filename,
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bool executable,
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fuchsia::mem::Buffer* buffer) {
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uint32_t flags = fuchsia::io::OPEN_RIGHT_READABLE |
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(executable ? fuchsia::io::OPEN_RIGHT_EXECUTABLE : 0);
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zx_status_t status;
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int fd;
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status = fdio_open_fd_at(dirfd, filename.c_str(), flags, &fd);
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if (status != ZX_OK) {
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FX_LOGF(ERROR, LOG_TAG, "fdio_open_fd_at(%d, \"%s\", %08x) failed: %s",
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dirfd, filename.c_str(), flags, zx_status_get_string(status));
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return false;
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}
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bool result = VmoFromFd(fd, executable, buffer);
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close(fd);
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return result;
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}
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zx_status_t IsSizeValid(const fuchsia::mem::Buffer& buffer, bool* is_valid) {
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size_t vmo_size;
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zx_status_t status = buffer.vmo.get_size(&vmo_size);
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if (status == ZX_OK) {
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*is_valid = vmo_size >= buffer.size;
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} else {
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*is_valid = false;
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}
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return status;
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}
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} // namespace dart_utils
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