diff options
Diffstat (limited to 'lib/ext2fs/inline.c')
| -rw-r--r-- | lib/ext2fs/inline.c | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/lib/ext2fs/inline.c b/lib/ext2fs/inline.c index ad0c3683..05da1f79 100644 --- a/lib/ext2fs/inline.c +++ b/lib/ext2fs/inline.c @@ -11,6 +11,9 @@ * %End-Header% */ +#ifndef _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 /* for posix_memalign() */ +#endif #include "config.h" #include <stdio.h> @@ -45,7 +48,7 @@ errcode_t ext2fs_get_memalign(unsigned long size, errcode_t retval; void **p = ptr; - if (align == 0) + if (align < 8) align = 8; #ifdef HAVE_POSIX_MEMALIGN retval = posix_memalign(p, align, size); @@ -64,9 +67,55 @@ errcode_t ext2fs_get_memalign(unsigned long size, return EXT2_ET_NO_MEMORY; } #else -#error memalign or posix_memalign must be defined! +#ifdef HAVE_VALLOC + if (align > sizeof(long long)) + *p = valloc(size); + else +#endif + *p = malloc(size); + if ((unsigned long) *p & (align - 1)) { + free(*p); + *p = 0; + } + if (*p == 0) + return EXT2_ET_NO_MEMORY; #endif #endif return 0; } +#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 |