inline.c revision e0ed7404719a9ddd2ba427a80db5365c8bad18c0
1/* 2 * inline.c --- Includes the inlined functions defined in the header 3 * files as standalone functions, in case the application program 4 * is compiled with inlining turned off. 5 * 6 * Copyright (C) 1993, 1994 Theodore Ts'o. 7 * 8 * %Begin-Header% 9 * This file may be redistributed under the terms of the GNU Library 10 * General Public License, version 2. 11 * %End-Header% 12 */ 13 14#ifndef _XOPEN_SOURCE 15#define _XOPEN_SOURCE 600 /* for posix_memalign() */ 16#endif 17 18#include <stdio.h> 19#include <string.h> 20#if HAVE_UNISTD_H 21#include <unistd.h> 22#endif 23#include <fcntl.h> 24#include <time.h> 25#if HAVE_SYS_STAT_H 26#include <sys/stat.h> 27#endif 28#if HAVE_SYS_TYPES_H 29#include <sys/types.h> 30#endif 31#ifdef HAVE_MALLOC_H 32#include <malloc.h> 33#endif 34 35#include "ext2_fs.h" 36#define INCLUDE_INLINE_FUNCS 37#include "ext2fs.h" 38 39/* 40 * We used to define this as an inline, but since we are now using 41 * autoconf-defined #ifdef's, we need to export this as a 42 * library-provided function exclusively. 43 */ 44errcode_t ext2fs_get_memalign(unsigned long size, 45 unsigned long align, void *ptr) 46{ 47 errcode_t retval; 48 void **p = ptr; 49 50 if (align < 8) 51 align = 8; 52#ifdef HAVE_POSIX_MEMALIGN 53 retval = posix_memalign(p, align, size); 54 if (retval) { 55 if (retval == ENOMEM) 56 return EXT2_ET_NO_MEMORY; 57 return retval; 58 } 59#else 60#ifdef HAVE_MEMALIGN 61 *p = memalign(align, size); 62 if (*p == NULL) { 63 if (errno) 64 return errno; 65 else 66 return EXT2_ET_NO_MEMORY; 67 } 68#else 69#ifdef HAVE_VALLOC 70 if (align > sizeof(long long)) 71 *p = valloc(size); 72 else 73#endif 74 *p = malloc(size); 75 if ((unsigned long) *p & (align - 1)) { 76 free(*p); 77 *p = 0; 78 } 79 if (*p == 0) 80 return EXT2_ET_NO_MEMORY; 81#endif 82#endif 83 return 0; 84} 85 86#ifdef DEBUG 87static int isaligned(void *ptr, unsigned long align) 88{ 89 return (((unsigned long) ptr & (align - 1)) == 0); 90} 91 92static errcode_t test_memalign(unsigned long align) 93{ 94 void *ptr = 0; 95 errcode_t retval; 96 97 retval = ext2fs_get_memalign(32, align, &ptr); 98 if (!retval && !isaligned(ptr, align)) 99 retval = EINVAL; 100 free(ptr); 101 printf("tst_memalign(%lu) is %s\n", align, 102 retval ? error_message(retval) : "OK"); 103 return retval; 104} 105 106int main(int argc, char **argv) 107{ 108 int err = 0; 109 110 if (test_memalign(4)) 111 err++; 112 if (test_memalign(32)) 113 err++; 114 if (test_memalign(1024)) 115 err++; 116 if (test_memalign(4096)) 117 err++; 118 return err; 119} 120#endif 121