1 /**
2 * f2fs_format_utils.c
3 *
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * Dual licensed under the GPL or LGPL version 2 licenses.
8 */
9 #ifndef _LARGEFILE_SOURCE
10 #define _LARGEFILE_SOURCE
11 #endif
12 #ifndef _LARGEFILE64_SOURCE
13 #define _LARGEFILE64_SOURCE
14 #endif
15 #ifndef _GNU_SOURCE
16 #define _GNU_SOURCE
17 #endif
18
19 #ifndef _FILE_OFFSET_BITS
20 #define _FILE_OFFSET_BITS 64
21 #endif
22
23 #include <f2fs_fs.h>
24
25 #include <stdio.h>
26 #include <unistd.h>
27 #include <stdlib.h>
28 #ifndef ANDROID_WINDOWS_HOST
29 #include <sys/ioctl.h>
30 #endif
31 #include <sys/stat.h>
32 #include <fcntl.h>
33
34 #ifdef HAVE_LINUX_FS_H
35 #include <linux/fs.h>
36 #endif
37 #ifdef HAVE_LINUX_FALLOC_H
38 #include <linux/falloc.h>
39 #endif
40
41 #ifndef BLKDISCARD
42 #define BLKDISCARD _IO(0x12,119)
43 #endif
44 #ifndef BLKSECDISCARD
45 #define BLKSECDISCARD _IO(0x12,125)
46 #endif
47
trim_device(int i)48 static int trim_device(int i)
49 {
50 #ifndef ANDROID_WINDOWS_HOST
51 unsigned long long range[2];
52 struct stat *stat_buf;
53 struct device_info *dev = c.devices + i;
54 u_int64_t bytes = dev->total_sectors * dev->sector_size;
55 int fd = dev->fd;
56
57 stat_buf = malloc(sizeof(struct stat));
58 if (stat_buf == NULL) {
59 MSG(1, "\tError: Malloc Failed for trim_stat_buf!!!\n");
60 return -1;
61 }
62
63 if (fstat(fd, stat_buf) < 0 ) {
64 MSG(1, "\tError: Failed to get the device stat!!!\n");
65 free(stat_buf);
66 return -1;
67 }
68
69 range[0] = 0;
70 range[1] = bytes;
71
72 #if defined(WITH_BLKDISCARD) && defined(BLKDISCARD)
73 MSG(0, "Info: [%s] Discarding device\n", dev->path);
74 if (S_ISREG(stat_buf->st_mode)) {
75 #if defined(HAVE_FALLOCATE) && defined(FALLOC_FL_PUNCH_HOLE)
76 if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
77 range[0], range[1]) < 0) {
78 MSG(0, "Info: fallocate(PUNCH_HOLE|KEEP_SIZE) is failed\n");
79 }
80 #endif
81 free(stat_buf);
82 return 0;
83 } else if (S_ISBLK(stat_buf->st_mode)) {
84 if (dev->zoned_model != F2FS_ZONED_NONE) {
85 free(stat_buf);
86 return f2fs_reset_zones(i);
87 }
88 #ifdef BLKSECDISCARD
89 if (ioctl(fd, BLKSECDISCARD, &range) < 0) {
90 MSG(0, "Info: This device doesn't support BLKSECDISCARD\n");
91 } else {
92 MSG(0, "Info: Secure Discarded %lu MB\n",
93 (unsigned long)stat_buf->st_size >> 20);
94 free(stat_buf);
95 return 0;
96 }
97 #endif
98 if (ioctl(fd, BLKDISCARD, &range) < 0) {
99 MSG(0, "Info: This device doesn't support BLKDISCARD\n");
100 } else {
101 MSG(0, "Info: Discarded %llu MB\n", range[1] >> 20);
102 }
103 } else {
104 free(stat_buf);
105 return -1;
106 }
107 #endif
108 free(stat_buf);
109 #endif
110 return 0;
111 }
112
f2fs_trim_devices(void)113 int f2fs_trim_devices(void)
114 {
115 int i;
116
117 for (i = 0; i < c.ndevs; i++)
118 if (trim_device(i))
119 return -1;
120 c.trimmed = 1;
121 return 0;
122 }
123