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 */
ext2fs_get_memalign(unsigned long size,unsigned long align,void * ptr)44 errcode_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
isaligned(void * ptr,unsigned long align)87 static int isaligned(void *ptr, unsigned long align)
88 {
89 return (((unsigned long) ptr & (align - 1)) == 0);
90 }
91
test_memalign(unsigned long align)92 static 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
main(int argc,char ** argv)106 int 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