| /* |
| * inline.c --- Includes the inlined functions defined in the header |
| * files as standalone functions, in case the application program |
| * is compiled with inlining turned off. |
| * |
| * Copyright (C) 1993, 1994 Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Library |
| * General Public License, version 2. |
| * %End-Header% |
| */ |
| |
| #ifndef _XOPEN_SOURCE |
| #define _XOPEN_SOURCE 600 /* for posix_memalign() */ |
| #endif |
| |
| #include "config.h" |
| #include <stdio.h> |
| #include <string.h> |
| #if HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <fcntl.h> |
| #include <time.h> |
| #if HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif |
| #if HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| #if HAVE_MALLOC_H |
| #include <malloc.h> |
| #endif |
| |
| #include "ext2_fs.h" |
| #define INCLUDE_INLINE_FUNCS |
| #include "ext2fs.h" |
| |
| /* |
| * We used to define this as an inline, but since we are now using |
| * autoconf-defined #ifdef's, we need to export this as a |
| * library-provided function exclusively. |
| */ |
| errcode_t ext2fs_get_memalign(unsigned long size, |
| unsigned long align, void *ptr) |
| { |
| errcode_t retval = 0; |
| void **p = ptr; |
| |
| if (align < 8) |
| align = 8; |
| #ifdef HAVE_POSIX_MEMALIGN |
| retval = posix_memalign(p, align, size); |
| if (retval == ENOMEM) |
| return EXT2_ET_NO_MEMORY; |
| #else /* !HAVE_POSIX_MEMALIGN */ |
| #ifdef HAVE_MEMALIGN |
| *p = memalign(align, size); |
| if (*p == NULL) { |
| if (errno) |
| return errno; |
| else |
| return EXT2_ET_NO_MEMORY; |
| } |
| #else /* !HAVE_MEMALIGN */ |
| #ifdef HAVE_VALLOC |
| if (align > sizeof(long long)) |
| *p = valloc(size); |
| else |
| #endif |
| *p = malloc(size); |
| if ((uintptr_t) *p & (align - 1)) { |
| free(*p); |
| *p = 0; |
| } |
| if (*p == 0) |
| return EXT2_ET_NO_MEMORY; |
| #endif /* HAVE_MEMALIGN */ |
| #endif /* HAVE_POSIX_MEMALIGN */ |
| return retval; |
| } |
| |
| #ifdef DEBUG |
| static int isaligned(void *ptr, unsigned long align) |
| { |
| return (((unsigned long) ptr & (align - 1)) == 0); |
| } |
| |
| static errcode_t test_memalign(unsigned long align) |
| { |
| void *ptr = 0; |
| errcode_t retval; |
| |
| retval = ext2fs_get_memalign(32, align, &ptr); |
| if (!retval && !isaligned(ptr, align)) |
| retval = EINVAL; |
| free(ptr); |
| printf("tst_memalign(%lu) is %s\n", align, |
| retval ? error_message(retval) : "OK"); |
| return retval; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int err = 0; |
| |
| if (test_memalign(4)) |
| err++; |
| if (test_memalign(32)) |
| err++; |
| if (test_memalign(1024)) |
| err++; |
| if (test_memalign(4096)) |
| err++; |
| return err; |
| } |
| #endif |