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/**
* f2fs_format_utils.c
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Dual licensed under the GPL or LGPL version 2 licenses.
*/
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "f2fs_fs.h"
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
#endif
#ifdef HAVE_LINUX_FALLOC_H
#include <linux/falloc.h>
#endif
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
#endif
#ifndef BLKSECDISCARD
#define BLKSECDISCARD _IO(0x12,125)
#endif
static int trim_device(int i)
{
unsigned long long range[2];
struct stat stat_buf;
struct device_info *dev = c.devices + i;
u_int64_t bytes = dev->total_sectors * dev->sector_size;
int fd = dev->fd;
if (fstat(fd, &stat_buf) < 0 ) {
MSG(1, "\tError: Failed to get the device stat!!!\n");
return -1;
}
range[0] = 0;
range[1] = bytes;
#if defined(WITH_BLKDISCARD) && defined(BLKDISCARD)
MSG(0, "Info: [%s] Discarding device\n", dev->path);
if (S_ISREG(stat_buf.st_mode)) {
#if defined(HAVE_FALLOCATE) && defined(FALLOC_FL_PUNCH_HOLE)
if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
range[0], range[1]) < 0) {
MSG(0, "Info: fallocate(PUNCH_HOLE|KEEP_SIZE) is failed\n");
}
#endif
return 0;
} else if (S_ISBLK(stat_buf.st_mode)) {
if (dev->zoned_model != F2FS_ZONED_NONE)
return f2fs_reset_zones(i);
#ifdef BLKSECDISCARD
if (ioctl(fd, BLKSECDISCARD, &range) < 0) {
MSG(0, "Info: This device doesn't support BLKSECDISCARD\n");
} else {
MSG(0, "Info: Secure Discarded %lu MB\n",
stat_buf.st_size >> 20);
return 0;
}
#endif
if (ioctl(fd, BLKDISCARD, &range) < 0) {
MSG(0, "Info: This device doesn't support BLKDISCARD\n");
} else {
MSG(0, "Info: Discarded %llu MB\n", range[1] >> 20);
}
} else
return -1;
#endif
return 0;
}
int f2fs_trim_devices(void)
{
int i;
for (i = 0; i < c.ndevs; i++)
if (trim_device(i))
return -1;
c.trimmed = 1;
return 0;
}
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