gfx/skia/trunk/src/ports/SkOSFile_posix.cpp@129ffea94266
gfx/skia/trunk/src/ports/SkOSFile_posix.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 /*
2 * Copyright 2013 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
8 #include "SkOSFile.h"
10 #include "SkTFitsIn.h"
12 #include <stdio.h>
13 #include <sys/mman.h>
14 #include <sys/stat.h>
15 #include <sys/types.h>
17 typedef struct {
18 dev_t dev;
19 ino_t ino;
20 } SkFILEID;
22 static bool sk_ino(SkFILE* a, SkFILEID* id) {
23 int fd = fileno((FILE*)a);
24 if (fd < 0) {
25 return 0;
26 }
27 struct stat status;
28 if (0 != fstat(fd, &status)) {
29 return 0;
30 }
31 id->dev = status.st_dev;
32 id->ino = status.st_ino;
33 return true;
34 }
36 bool sk_fidentical(SkFILE* a, SkFILE* b) {
37 SkFILEID aID, bID;
38 return sk_ino(a, &aID) && sk_ino(b, &bID)
39 && aID.ino == bID.ino
40 && aID.dev == bID.dev;
41 }
43 void sk_fmunmap(const void* addr, size_t length) {
44 munmap(const_cast<void*>(addr), length);
45 }
47 void* sk_fdmmap(int fd, size_t* size) {
48 struct stat status;
49 if (0 != fstat(fd, &status)) {
50 return NULL;
51 }
52 if (!S_ISREG(status.st_mode)) {
53 return NULL;
54 }
55 if (!SkTFitsIn<size_t>(status.st_size)) {
56 return NULL;
57 }
58 size_t fileSize = static_cast<size_t>(status.st_size);
60 void* addr = mmap(NULL, fileSize, PROT_READ, MAP_PRIVATE, fd, 0);
61 if (MAP_FAILED == addr) {
62 return NULL;
63 }
65 *size = fileSize;
66 return addr;
67 }
69 int sk_fileno(SkFILE* f) {
70 return fileno((FILE*)f);
71 }
73 void* sk_fmmap(SkFILE* f, size_t* size) {
74 int fd = sk_fileno(f);
75 if (fd < 0) {
76 return NULL;
77 }
79 return sk_fdmmap(fd, size);
80 }
