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test_librbd_fsx: use posix_memalign() to allocate aligned buffers

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Use posix_memalign() to allocate good_buf and temp_buf, which must be
writebdy and readbdy aligned respectively.  Using round_ptr_up() the
way it is used makes fsx crash on free()s at the end of main(), because
the pointer returned by malloc() is overwritten by the aligned pointer.

Drop round_ptr_up() as it is no longer used.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
This commit is contained in:
Ilya Dryomov 2014-04-25 13:36:53 +04:00
parent 7df50ecd80
commit 3513ba0ac4
1 changed files with 22 additions and 13 deletions

35
src/test/librbd/fsx.c
View File

@ -34,6 +34,7 @@
#include <errno.h>
#include <math.h>
#include "include/intarith.h"
#include "include/rados/librados.h"
#include "include/rbd/librbd.h"
@ -173,15 +174,6 @@ FILE * fsxlogf = NULL;
int badoff = -1;
int closeopen = 0;
static void *round_ptr_up(void *ptr, unsigned long align, unsigned long offset)
{
unsigned long ret = (unsigned long)ptr;
ret = ((ret + align - 1) & ~(align - 1));
ret += offset;
return (void *)ret;
}
void
vwarnc(int code, const char *fmt, va_list ap) {
fprintf(stderr, "fsx: ");
@ -1530,12 +1522,29 @@ main(int argc, char **argv)
original_buf = (char *) malloc(maxfilelen);
for (i = 0; i < (int)maxfilelen; i++)
original_buf[i] = random() % 256;
good_buf = (char *) malloc(maxfilelen + writebdy);
good_buf = round_ptr_up(good_buf, writebdy, 0);
ret = posix_memalign((void **)&good_buf, MAX(writebdy, sizeof(void *)),
maxfilelen);
if (ret > 0) {
if (ret == EINVAL)
prt("writebdy is not a suitable power of two\n");
else
prterrcode("main: posix_memalign(good_buf)", -ret);
exit(94);
}
memset(good_buf, '\0', maxfilelen);
temp_buf = (char *) malloc(maxfilelen + readbdy);
temp_buf = round_ptr_up(temp_buf, readbdy, 0);
ret = posix_memalign((void **)&temp_buf, MAX(readbdy, sizeof(void *)),
maxfilelen);
if (ret > 0) {
if (ret == EINVAL)
prt("readbdy is not a suitable power of two\n");
else
prterrcode("main: posix_memalign(temp_buf)", -ret);
exit(95);
}
memset(temp_buf, '\0', maxfilelen);
if (lite) { /* zero entire existing file */
ssize_t written;