netwerk/srtp/src/crypto/kernel/alloc.c@6474c204b198 (annotated)
netwerk/srtp/src/crypto/kernel/alloc.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * alloc.c |
| michael@0 | 3 | * |
| michael@0 | 4 | * memory allocation and deallocation |
| michael@0 | 5 | * |
| michael@0 | 6 | * David A. McGrew |
| michael@0 | 7 | * Cisco Systems, Inc. |
| michael@0 | 8 | */ |
| michael@0 | 9 | /* |
| michael@0 | 10 | * |
| michael@0 | 11 | * Copyright (c) 2001-2006 Cisco Systems, Inc. |
| michael@0 | 12 | * All rights reserved. |
| michael@0 | 13 | * |
| michael@0 | 14 | * Redistribution and use in source and binary forms, with or without |
| michael@0 | 15 | * modification, are permitted provided that the following conditions |
| michael@0 | 16 | * are met: |
| michael@0 | 17 | * |
| michael@0 | 18 | * Redistributions of source code must retain the above copyright |
| michael@0 | 19 | * notice, this list of conditions and the following disclaimer. |
| michael@0 | 20 | * |
| michael@0 | 21 | * Redistributions in binary form must reproduce the above |
| michael@0 | 22 | * copyright notice, this list of conditions and the following |
| michael@0 | 23 | * disclaimer in the documentation and/or other materials provided |
| michael@0 | 24 | * with the distribution. |
| michael@0 | 25 | * |
| michael@0 | 26 | * Neither the name of the Cisco Systems, Inc. nor the names of its |
| michael@0 | 27 | * contributors may be used to endorse or promote products derived |
| michael@0 | 28 | * from this software without specific prior written permission. |
| michael@0 | 29 | * |
| michael@0 | 30 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 31 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 32 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| michael@0 | 33 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| michael@0 | 34 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| michael@0 | 35 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| michael@0 | 36 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| michael@0 | 37 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| michael@0 | 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| michael@0 | 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| michael@0 | 40 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| michael@0 | 41 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 42 | * |
| michael@0 | 43 | */ |
| michael@0 | 44 | |
| michael@0 | 45 | #include "alloc.h" |
| michael@0 | 46 | #include "crypto_kernel.h" |
| michael@0 | 47 | |
| michael@0 | 48 | /* the debug module for memory allocation */ |
| michael@0 | 49 | |
| michael@0 | 50 | debug_module_t mod_alloc = { |
| michael@0 | 51 | 0, /* debugging is off by default */ |
| michael@0 | 52 | "alloc" /* printable name for module */ |
| michael@0 | 53 | }; |
| michael@0 | 54 | |
| michael@0 | 55 | /* |
| michael@0 | 56 | * Nota bene: the debugging statements for crypto_alloc() and |
| michael@0 | 57 | * crypto_free() have identical prefixes, which include the addresses |
| michael@0 | 58 | * of the memory locations on which they are operating. This fact can |
| michael@0 | 59 | * be used to locate memory leaks, by turning on memory debugging, |
| michael@0 | 60 | * grepping for 'alloc', then matching alloc and free calls by |
| michael@0 | 61 | * address. |
| michael@0 | 62 | */ |
| michael@0 | 63 | |
| michael@0 | 64 | #ifdef SRTP_KERNEL_LINUX |
| michael@0 | 65 | |
| michael@0 | 66 | #include <linux/interrupt.h> |
| michael@0 | 67 | |
| michael@0 | 68 | void * |
| michael@0 | 69 | crypto_alloc(size_t size) { |
| michael@0 | 70 | void *ptr; |
| michael@0 | 71 | |
| michael@0 | 72 | ptr = kmalloc(size, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); |
| michael@0 | 73 | |
| michael@0 | 74 | if (ptr) { |
| michael@0 | 75 | debug_print(mod_alloc, "(location: %p) allocated", ptr); |
| michael@0 | 76 | } else { |
| michael@0 | 77 | debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size); |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | return ptr; |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | void |
| michael@0 | 84 | crypto_free(void *ptr) { |
| michael@0 | 85 | |
| michael@0 | 86 | debug_print(mod_alloc, "(location: %p) freed", ptr); |
| michael@0 | 87 | |
| michael@0 | 88 | kfree(ptr); |
| michael@0 | 89 | } |
| michael@0 | 90 | |
| michael@0 | 91 | |
| michael@0 | 92 | #elif defined(HAVE_STDLIB_H) |
| michael@0 | 93 | |
| michael@0 | 94 | void * |
| michael@0 | 95 | crypto_alloc(size_t size) { |
| michael@0 | 96 | void *ptr; |
| michael@0 | 97 | |
| michael@0 | 98 | ptr = malloc(size); |
| michael@0 | 99 | |
| michael@0 | 100 | if (ptr) { |
| michael@0 | 101 | debug_print(mod_alloc, "(location: %p) allocated", ptr); |
| michael@0 | 102 | } else { |
| michael@0 | 103 | debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size); |
| michael@0 | 104 | } |
| michael@0 | 105 | |
| michael@0 | 106 | return ptr; |
| michael@0 | 107 | } |
| michael@0 | 108 | |
| michael@0 | 109 | void |
| michael@0 | 110 | crypto_free(void *ptr) { |
| michael@0 | 111 | |
| michael@0 | 112 | debug_print(mod_alloc, "(location: %p) freed", ptr); |
| michael@0 | 113 | |
| michael@0 | 114 | free(ptr); |
| michael@0 | 115 | } |
| michael@0 | 116 | |
| michael@0 | 117 | #else /* we need to define our own memory allocation routines */ |
| michael@0 | 118 | |
| michael@0 | 119 | #error no memory allocation defined yet |
| michael@0 | 120 | |
| michael@0 | 121 | #endif |
