/**
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* f2fs_format_utils.c
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*
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* Copyright (c) 2014 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* Dual licensed under the GPL or LGPL version 2 licenses.
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*/
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#ifndef _LARGEFILE_SOURCE
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#define _LARGEFILE_SOURCE
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#endif
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#ifndef _LARGEFILE64_SOURCE
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#define _LARGEFILE64_SOURCE
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#endif
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#ifndef _FILE_OFFSET_BITS
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#define _FILE_OFFSET_BITS 64
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#endif
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#include <f2fs_fs.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#ifndef ANDROID_WINDOWS_HOST
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#include <sys/ioctl.h>
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#ifdef HAVE_LINUX_FS_H
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#include <linux/fs.h>
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#endif
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#ifdef HAVE_LINUX_FALLOC_H
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#include <linux/falloc.h>
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#endif
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#ifndef BLKDISCARD
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#define BLKDISCARD _IO(0x12,119)
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#endif
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#ifndef BLKSECDISCARD
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#define BLKSECDISCARD _IO(0x12,125)
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#endif
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static int trim_device(int i)
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{
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#ifndef ANDROID_WINDOWS_HOST
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unsigned long long range[2];
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struct stat *stat_buf;
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struct device_info *dev = c.devices + i;
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u_int64_t bytes = dev->total_sectors * dev->sector_size;
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int fd = dev->fd;
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stat_buf = malloc(sizeof(struct stat));
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if (stat_buf == NULL) {
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MSG(1, "\tError: Malloc Failed for trim_stat_buf!!!\n");
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return -1;
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}
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if (fstat(fd, stat_buf) < 0 ) {
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MSG(1, "\tError: Failed to get the device stat!!!\n");
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free(stat_buf);
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return -1;
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}
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range[0] = 0;
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range[1] = bytes;
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#if defined(WITH_BLKDISCARD) && defined(BLKDISCARD)
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MSG(0, "Info: [%s] Discarding device\n", dev->path);
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if (S_ISREG(stat_buf->st_mode)) {
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#if defined(HAVE_FALLOCATE) && defined(FALLOC_FL_PUNCH_HOLE)
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if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
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range[0], range[1]) < 0) {
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MSG(0, "Info: fallocate(PUNCH_HOLE|KEEP_SIZE) is failed\n");
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}
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#endif
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free(stat_buf);
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return 0;
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} else if (S_ISBLK(stat_buf->st_mode)) {
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if (dev->zoned_model != F2FS_ZONED_NONE) {
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free(stat_buf);
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return f2fs_reset_zones(i);
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}
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#ifdef BLKSECDISCARD
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if (ioctl(fd, BLKSECDISCARD, &range) < 0) {
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MSG(0, "Info: This device doesn't support BLKSECDISCARD\n");
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} else {
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MSG(0, "Info: Secure Discarded %lu MB\n",
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(unsigned long)stat_buf->st_size >> 20);
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free(stat_buf);
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return 0;
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}
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#endif
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if (ioctl(fd, BLKDISCARD, &range) < 0) {
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MSG(0, "Info: This device doesn't support BLKDISCARD\n");
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} else {
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MSG(0, "Info: Discarded %llu MB\n", range[1] >> 20);
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}
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} else {
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free(stat_buf);
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return -1;
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}
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#endif
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free(stat_buf);
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#endif
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return 0;
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}
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int f2fs_trim_devices(void)
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{
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int i;
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for (i = 0; i < c.ndevs; i++)
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if (trim_device(i))
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return -1;
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c.trimmed = 1;
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return 0;
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}
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