srtp/crypto/kernel/alloc.c - Issue 2344973002: Update libsrtp to version 2.0

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Issue 2344973002: Update libsrtp to version 2.0 (Closed)

Patch Set: Add '.' back to include_dirs Created 4 years, 2 months ago

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1 /*

2 * alloc.c

3 *

4 * memory allocation and deallocation

5 *

6 * David A. McGrew

7 * Cisco Systems, Inc.

8 */

9 /*

10 *

11 * Copyright (c) 2001-2006 Cisco Systems, Inc.

12 * All rights reserved.

13 *

14 * Redistribution and use in source and binary forms, with or without

15 * modification, are permitted provided that the following conditions

16 * are met:

17 *

18 * Redistributions of source code must retain the above copyright

19 * notice, this list of conditions and the following disclaimer.

20 *

21 * Redistributions in binary form must reproduce the above

22 * copyright notice, this list of conditions and the following

23 * disclaimer in the documentation and/or other materials provided

24 * with the distribution.

25 *

26 * Neither the name of the Cisco Systems, Inc. nor the names of its

27 * contributors may be used to endorse or promote products derived

28 * from this software without specific prior written permission.

29 *

30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

31 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

32 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

33 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

34 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

41 * OF THE POSSIBILITY OF SUCH DAMAGE.

42 *

43 */

44

45 #ifdef HAVE_CONFIG_H

46 #include <config.h>

47 #endif

48

49 #include "alloc.h"

50 #include "crypto_kernel.h"

51

52 /* the debug module for memory allocation */

53

54 debug_module_t mod_alloc = {

55 0, /* debugging is off by default */

56 "alloc" /* printable name for module */

57 };

58

59 /*

60 * Nota bene: the debugging statements for crypto_alloc() and

61 * crypto_free() have identical prefixes, which include the addresses

62 * of the memory locations on which they are operating. This fact can

63 * be used to locate memory leaks, by turning on memory debugging,

64 * grepping for 'alloc', then matching alloc and free calls by

65 * address.

66 */

67

68 #ifdef SRTP_KERNEL_LINUX

69

70 #include <linux/interrupt.h>

71

72 void *

73 crypto_alloc(size_t size) {

74 void *ptr;

75

76 ptr = kmalloc(size, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);

77

78 if (ptr) {

79 debug_print(mod_alloc, "(location: %p) allocated", ptr);

80 } else {

81 debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size);

82 }

83

84 return ptr;

85 }

86

87 void

88 crypto_free(void *ptr) {

89

90 debug_print(mod_alloc, "(location: %p) freed", ptr);

91

92 kfree(ptr);

93 }

94

95

96 #elif defined(HAVE_STDLIB_H)

97

98 void *

99 crypto_alloc(size_t size) {

100 void *ptr;

101

102 ptr = malloc(size);

103

104 if (ptr) {

105 debug_print(mod_alloc, "(location: %p) allocated", ptr);

106 } else {

107 debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size);

108 }

109

110 return ptr;

111 }

112

113 void

114 crypto_free(void *ptr) {

115

116 debug_print(mod_alloc, "(location: %p) freed", ptr);

117

118 free(ptr);

119 }

120

121 #else /* we need to define our own memory allocation routines */

122

123 #error no memory allocation defined yet

124

125 #endif

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