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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /netwerk/srtp/src/crypto/kernel/alloc.c | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'netwerk/srtp/src/crypto/kernel/alloc.c')
-rw-r--r-- | netwerk/srtp/src/crypto/kernel/alloc.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/netwerk/srtp/src/crypto/kernel/alloc.c b/netwerk/srtp/src/crypto/kernel/alloc.c new file mode 100644 index 000000000..338434191 --- /dev/null +++ b/netwerk/srtp/src/crypto/kernel/alloc.c @@ -0,0 +1,121 @@ +/* + * alloc.c + * + * memory allocation and deallocation + * + * David A. McGrew + * Cisco Systems, Inc. + */ +/* + * + * Copyright (c) 2001-2006 Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "alloc.h" +#include "crypto_kernel.h" + +/* the debug module for memory allocation */ + +debug_module_t mod_alloc = { + 0, /* debugging is off by default */ + "alloc" /* printable name for module */ +}; + +/* + * Nota bene: the debugging statements for crypto_alloc() and + * crypto_free() have identical prefixes, which include the addresses + * of the memory locations on which they are operating. This fact can + * be used to locate memory leaks, by turning on memory debugging, + * grepping for 'alloc', then matching alloc and free calls by + * address. + */ + +#ifdef SRTP_KERNEL_LINUX + +#include <linux/interrupt.h> + +void * +crypto_alloc(size_t size) { + void *ptr; + + ptr = kmalloc(size, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); + + if (ptr) { + debug_print(mod_alloc, "(location: %p) allocated", ptr); + } else { + debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size); + } + + return ptr; +} + +void +crypto_free(void *ptr) { + + debug_print(mod_alloc, "(location: %p) freed", ptr); + + kfree(ptr); +} + + +#elif defined(HAVE_STDLIB_H) + +void * +crypto_alloc(size_t size) { + void *ptr; + + ptr = malloc(size); + + if (ptr) { + debug_print(mod_alloc, "(location: %p) allocated", ptr); + } else { + debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size); + } + + return ptr; +} + +void +crypto_free(void *ptr) { + + debug_print(mod_alloc, "(location: %p) freed", ptr); + + free(ptr); +} + +#else /* we need to define our own memory allocation routines */ + +#error no memory allocation defined yet + +#endif |