/** * libf2fs.c * * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com/ * * Dual licensed under the GPL or LGPL version 2 licenses. */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #ifdef HAVE_MNTENT_H #include #endif #include #include #ifndef ANDROID_WINDOWS_HOST #include #include #endif #ifdef HAVE_SYS_SYSMACROS_H #include #endif #ifdef HAVE_SYS_UTSNAME_H #include #endif #ifndef WITH_ANDROID #ifdef HAVE_SCSI_SG_H #include #endif #endif #ifdef HAVE_LINUX_HDREG_H #include #endif #ifdef HAVE_LINUX_LIMITS_H #include #endif #ifndef WITH_ANDROID /* SCSI command for standard inquiry*/ #define MODELINQUIRY 0x12,0x00,0x00,0x00,0x4A,0x00 #endif #ifndef ANDROID_WINDOWS_HOST /* O_BINARY is windows-specific flag */ #define O_BINARY 0 #else /* On Windows, wchar_t is 8 bit sized and it causes compilation errors. */ #define wchar_t int #endif /* * UTF conversion codes are Copied from exfat tools. */ static const char *utf8_to_wchar(const char *input, wchar_t *wc, size_t insize) { if ((input[0] & 0x80) == 0 && insize >= 1) { *wc = (wchar_t) input[0]; return input + 1; } if ((input[0] & 0xe0) == 0xc0 && insize >= 2) { *wc = (((wchar_t) input[0] & 0x1f) << 6) | ((wchar_t) input[1] & 0x3f); return input + 2; } if ((input[0] & 0xf0) == 0xe0 && insize >= 3) { *wc = (((wchar_t) input[0] & 0x0f) << 12) | (((wchar_t) input[1] & 0x3f) << 6) | ((wchar_t) input[2] & 0x3f); return input + 3; } if ((input[0] & 0xf8) == 0xf0 && insize >= 4) { *wc = (((wchar_t) input[0] & 0x07) << 18) | (((wchar_t) input[1] & 0x3f) << 12) | (((wchar_t) input[2] & 0x3f) << 6) | ((wchar_t) input[3] & 0x3f); return input + 4; } if ((input[0] & 0xfc) == 0xf8 && insize >= 5) { *wc = (((wchar_t) input[0] & 0x03) << 24) | (((wchar_t) input[1] & 0x3f) << 18) | (((wchar_t) input[2] & 0x3f) << 12) | (((wchar_t) input[3] & 0x3f) << 6) | ((wchar_t) input[4] & 0x3f); return input + 5; } if ((input[0] & 0xfe) == 0xfc && insize >= 6) { *wc = (((wchar_t) input[0] & 0x01) << 30) | (((wchar_t) input[1] & 0x3f) << 24) | (((wchar_t) input[2] & 0x3f) << 18) | (((wchar_t) input[3] & 0x3f) << 12) | (((wchar_t) input[4] & 0x3f) << 6) | ((wchar_t) input[5] & 0x3f); return input + 6; } return NULL; } static u_int16_t *wchar_to_utf16(u_int16_t *output, wchar_t wc, size_t outsize) { if (wc <= 0xffff) { if (outsize == 0) return NULL; output[0] = cpu_to_le16(wc); return output + 1; } if (outsize < 2) return NULL; wc -= 0x10000; output[0] = cpu_to_le16(0xd800 | ((wc >> 10) & 0x3ff)); output[1] = cpu_to_le16(0xdc00 | (wc & 0x3ff)); return output + 2; } int utf8_to_utf16(u_int16_t *output, const char *input, size_t outsize, size_t insize) { const char *inp = input; u_int16_t *outp = output; wchar_t wc; while ((size_t)(inp - input) < insize && *inp) { inp = utf8_to_wchar(inp, &wc, insize - (inp - input)); if (inp == NULL) { DBG(0, "illegal UTF-8 sequence\n"); return -EILSEQ; } outp = wchar_to_utf16(outp, wc, outsize - (outp - output)); if (outp == NULL) { DBG(0, "name is too long\n"); return -ENAMETOOLONG; } } *outp = cpu_to_le16(0); return 0; } static const u_int16_t *utf16_to_wchar(const u_int16_t *input, wchar_t *wc, size_t insize) { if ((le16_to_cpu(input[0]) & 0xfc00) == 0xd800) { if (insize < 2 || (le16_to_cpu(input[1]) & 0xfc00) != 0xdc00) return NULL; *wc = ((wchar_t) (le16_to_cpu(input[0]) & 0x3ff) << 10); *wc |= (le16_to_cpu(input[1]) & 0x3ff); *wc += 0x10000; return input + 2; } else { *wc = le16_to_cpu(*input); return input + 1; } } static char *wchar_to_utf8(char *output, wchar_t wc, size_t outsize) { if (wc <= 0x7f) { if (outsize < 1) return NULL; *output++ = (char) wc; } else if (wc <= 0x7ff) { if (outsize < 2) return NULL; *output++ = 0xc0 | (wc >> 6); *output++ = 0x80 | (wc & 0x3f); } else if (wc <= 0xffff) { if (outsize < 3) return NULL; *output++ = 0xe0 | (wc >> 12); *output++ = 0x80 | ((wc >> 6) & 0x3f); *output++ = 0x80 | (wc & 0x3f); } else if (wc <= 0x1fffff) { if (outsize < 4) return NULL; *output++ = 0xf0 | (wc >> 18); *output++ = 0x80 | ((wc >> 12) & 0x3f); *output++ = 0x80 | ((wc >> 6) & 0x3f); *output++ = 0x80 | (wc & 0x3f); } else if (wc <= 0x3ffffff) { if (outsize < 5) return NULL; *output++ = 0xf8 | (wc >> 24); *output++ = 0x80 | ((wc >> 18) & 0x3f); *output++ = 0x80 | ((wc >> 12) & 0x3f); *output++ = 0x80 | ((wc >> 6) & 0x3f); *output++ = 0x80 | (wc & 0x3f); } else if (wc <= 0x7fffffff) { if (outsize < 6) return NULL; *output++ = 0xfc | (wc >> 30); *output++ = 0x80 | ((wc >> 24) & 0x3f); *output++ = 0x80 | ((wc >> 18) & 0x3f); *output++ = 0x80 | ((wc >> 12) & 0x3f); *output++ = 0x80 | ((wc >> 6) & 0x3f); *output++ = 0x80 | (wc & 0x3f); } else return NULL; return output; } int utf16_to_utf8(char *output, const u_int16_t *input, size_t outsize, size_t insize) { const u_int16_t *inp = input; char *outp = output; wchar_t wc; while ((size_t)(inp - input) < insize && le16_to_cpu(*inp)) { inp = utf16_to_wchar(inp, &wc, insize - (inp - input)); if (inp == NULL) { DBG(0, "illegal UTF-16 sequence\n"); return -EILSEQ; } outp = wchar_to_utf8(outp, wc, outsize - (outp - output)); if (outp == NULL) { DBG(0, "name is too long\n"); return -ENAMETOOLONG; } } *outp = '\0'; return 0; } int log_base_2(u_int32_t num) { int ret = 0; if (num <= 0 || (num & (num - 1)) != 0) return -1; while (num >>= 1) ret++; return ret; } /* * f2fs bit operations */ static const int bits_in_byte[256] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8, }; int get_bits_in_byte(unsigned char n) { return bits_in_byte[n]; } int test_and_set_bit_le(u32 nr, u8 *addr) { int mask, retval; addr += nr >> 3; mask = 1 << ((nr & 0x07)); retval = mask & *addr; *addr |= mask; return retval; } int test_and_clear_bit_le(u32 nr, u8 *addr) { int mask, retval; addr += nr >> 3; mask = 1 << ((nr & 0x07)); retval = mask & *addr; *addr &= ~mask; return retval; } int test_bit_le(u32 nr, const u8 *addr) { return ((1 << (nr & 7)) & (addr[nr >> 3])); } int f2fs_test_bit(unsigned int nr, const char *p) { int mask; char *addr = (char *)p; addr += (nr >> 3); mask = 1 << (7 - (nr & 0x07)); return (mask & *addr) != 0; } int f2fs_set_bit(unsigned int nr, char *addr) { int mask; int ret; addr += (nr >> 3); mask = 1 << (7 - (nr & 0x07)); ret = mask & *addr; *addr |= mask; return ret; } int f2fs_clear_bit(unsigned int nr, char *addr) { int mask; int ret; addr += (nr >> 3); mask = 1 << (7 - (nr & 0x07)); ret = mask & *addr; *addr &= ~mask; return ret; } static inline u64 __ffs(u8 word) { int num = 0; if ((word & 0xf) == 0) { num += 4; word >>= 4; } if ((word & 0x3) == 0) { num += 2; word >>= 2; } if ((word & 0x1) == 0) num += 1; return num; } /* Copied from linux/lib/find_bit.c */ #define BITMAP_FIRST_BYTE_MASK(start) (0xff << ((start) & (BITS_PER_BYTE - 1))) static u64 _find_next_bit_le(const u8 *addr, u64 nbits, u64 start, char invert) { u8 tmp; if (!nbits || start >= nbits) return nbits; tmp = addr[start / BITS_PER_BYTE] ^ invert; /* Handle 1st word. */ tmp &= BITMAP_FIRST_BYTE_MASK(start); start = round_down(start, BITS_PER_BYTE); while (!tmp) { start += BITS_PER_BYTE; if (start >= nbits) return nbits; tmp = addr[start / BITS_PER_BYTE] ^ invert; } return min(start + __ffs(tmp), nbits); } u64 find_next_bit_le(const u8 *addr, u64 size, u64 offset) { return _find_next_bit_le(addr, size, offset, 0); } u64 find_next_zero_bit_le(const u8 *addr, u64 size, u64 offset) { return _find_next_bit_le(addr, size, offset, 0xff); } /* * Hashing code adapted from ext3 */ #define DELTA 0x9E3779B9 static void TEA_transform(unsigned int buf[4], unsigned int const in[]) { __u32 sum = 0; __u32 b0 = buf[0], b1 = buf[1]; __u32 a = in[0], b = in[1], c = in[2], d = in[3]; int n = 16; do { sum += DELTA; b0 += ((b1 << 4)+a) ^ (b1+sum) ^ ((b1 >> 5)+b); b1 += ((b0 << 4)+c) ^ (b0+sum) ^ ((b0 >> 5)+d); } while (--n); buf[0] += b0; buf[1] += b1; } static void str2hashbuf(const unsigned char *msg, int len, unsigned int *buf, int num) { unsigned pad, val; int i; pad = (__u32)len | ((__u32)len << 8); pad |= pad << 16; val = pad; if (len > num * 4) len = num * 4; for (i = 0; i < len; i++) { if ((i % 4) == 0) val = pad; val = msg[i] + (val << 8); if ((i % 4) == 3) { *buf++ = val; val = pad; num--; } } if (--num >= 0) *buf++ = val; while (--num >= 0) *buf++ = pad; } /** * Return hash value of directory entry * @param name dentry name * @param len name lenth * @return return on success hash value, errno on failure */ f2fs_hash_t f2fs_dentry_hash(const unsigned char *name, int len) { __u32 hash; f2fs_hash_t f2fs_hash; const unsigned char *p; __u32 in[8], buf[4]; /* special hash codes for special dentries */ if ((len <= 2) && (name[0] == '.') && (name[1] == '.' || name[1] == '\0')) return 0; /* Initialize the default seed for the hash checksum functions */ buf[0] = 0x67452301; buf[1] = 0xefcdab89; buf[2] = 0x98badcfe; buf[3] = 0x10325476; p = name; while (1) { str2hashbuf(p, len, in, 4); TEA_transform(buf, in); p += 16; if (len <= 16) break; len -= 16; } hash = buf[0]; f2fs_hash = cpu_to_le32(hash & ~F2FS_HASH_COL_BIT); return f2fs_hash; } unsigned int addrs_per_inode(struct f2fs_inode *i) { return CUR_ADDRS_PER_INODE(i) - get_inline_xattr_addrs(i); } /* * CRC32 */ #define CRCPOLY_LE 0xedb88320 u_int32_t f2fs_cal_crc32(u_int32_t crc, void *buf, int len) { int i; unsigned char *p = (unsigned char *)buf; while (len--) { crc ^= *p++; for (i = 0; i < 8; i++) crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); } return crc; } int f2fs_crc_valid(u_int32_t blk_crc, void *buf, int len) { u_int32_t cal_crc = 0; cal_crc = f2fs_cal_crc32(F2FS_SUPER_MAGIC, buf, len); if (cal_crc != blk_crc) { DBG(0,"CRC validation failed: cal_crc = %u, " "blk_crc = %u buff_size = 0x%x\n", cal_crc, blk_crc, len); return -1; } return 0; } __u32 f2fs_inode_chksum(struct f2fs_node *node) { struct f2fs_inode *ri = &node->i; __le32 ino = node->footer.ino; __le32 gen = ri->i_generation; __u32 chksum, chksum_seed; __u32 dummy_cs = 0; unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); unsigned int cs_size = sizeof(dummy_cs); chksum = f2fs_cal_crc32(c.chksum_seed, (__u8 *)&ino, sizeof(ino)); chksum_seed = f2fs_cal_crc32(chksum, (__u8 *)&gen, sizeof(gen)); chksum = f2fs_cal_crc32(chksum_seed, (__u8 *)ri, offset); chksum = f2fs_cal_crc32(chksum, (__u8 *)&dummy_cs, cs_size); offset += cs_size; chksum = f2fs_cal_crc32(chksum, (__u8 *)ri + offset, F2FS_BLKSIZE - offset); return chksum; } /* * try to identify the root device */ const char *get_rootdev() { #if defined(ANDROID_WINDOWS_HOST) || defined(WITH_ANDROID) return NULL; #else struct stat sb; int fd, ret; char buf[32]; char *uevent, *ptr; static char rootdev[PATH_MAX + 1]; if (stat("/", &sb) == -1) return NULL; snprintf(buf, 32, "/sys/dev/block/%u:%u/uevent", major(sb.st_dev), minor(sb.st_dev)); fd = open(buf, O_RDONLY); if (fd < 0) return NULL; ret = lseek(fd, (off_t)0, SEEK_END); (void)lseek(fd, (off_t)0, SEEK_SET); if (ret == -1) { close(fd); return NULL; } uevent = malloc(ret + 1); uevent[ret] = '\0'; ret = read(fd, uevent, ret); close(fd); ptr = strstr(uevent, "DEVNAME"); if (!ptr) return NULL; ret = sscanf(ptr, "DEVNAME=%s\n", buf); snprintf(rootdev, PATH_MAX + 1, "/dev/%s", buf); return rootdev; #endif } /* * device information */ void f2fs_init_configuration(void) { int i; memset(&c, 0, sizeof(struct f2fs_configuration)); c.ndevs = 1; c.sectors_per_blk = DEFAULT_SECTORS_PER_BLOCK; c.blks_per_seg = DEFAULT_BLOCKS_PER_SEGMENT; c.rootdev_name = get_rootdev(); c.wanted_total_sectors = -1; c.wanted_sector_size = -1; #ifndef WITH_ANDROID c.preserve_limits = 1; #endif for (i = 0; i < MAX_DEVICES; i++) { c.devices[i].fd = -1; c.devices[i].sector_size = DEFAULT_SECTOR_SIZE; c.devices[i].end_blkaddr = -1; c.devices[i].zoned_model = F2FS_ZONED_NONE; } /* calculated by overprovision ratio */ c.segs_per_sec = 1; c.secs_per_zone = 1; c.segs_per_zone = 1; c.vol_label = ""; c.trim = 1; c.kd = -1; c.fixed_time = -1; } #ifdef HAVE_SETMNTENT static int is_mounted(const char *mpt, const char *device) { FILE *file = NULL; struct mntent *mnt = NULL; file = setmntent(mpt, "r"); if (file == NULL) return 0; while ((mnt = getmntent(file)) != NULL) { if (!strcmp(device, mnt->mnt_fsname)) { #ifdef MNTOPT_RO if (hasmntopt(mnt, MNTOPT_RO)) c.ro = 1; #endif break; } } endmntent(file); return mnt ? 1 : 0; } #endif int f2fs_dev_is_umounted(char *path) { #ifdef ANDROID_WINDOWS_HOST return 0; #else struct stat *st_buf; int is_rootdev = 0; int ret = 0; if (c.rootdev_name && !strcmp(path, c.rootdev_name)) is_rootdev = 1; /* * try with /proc/mounts fist to detect RDONLY. * f2fs_stop_checkpoint makes RO in /proc/mounts while RW in /etc/mtab. */ #ifdef __linux__ ret = is_mounted("/proc/mounts", path); if (ret) { MSG(0, "Info: Mounted device!\n"); return -1; } #endif #if defined(MOUNTED) || defined(_PATH_MOUNTED) #ifndef MOUNTED #define MOUNTED _PATH_MOUNTED #endif ret = is_mounted(MOUNTED, path); if (ret) { MSG(0, "Info: Mounted device!\n"); return -1; } #endif /* * If we are supposed to operate on the root device, then * also check the mounts for '/dev/root', which sometimes * functions as an alias for the root device. */ if (is_rootdev) { #ifdef __linux__ ret = is_mounted("/proc/mounts", "/dev/root"); if (ret) { MSG(0, "Info: Mounted device!\n"); return -1; } #endif } /* * If f2fs is umounted with -l, the process can still use * the file system. In this case, we should not format. */ st_buf = malloc(sizeof(struct stat)); if (stat(path, st_buf) == 0 && S_ISBLK(st_buf->st_mode)) { int fd = open(path, O_RDONLY | O_EXCL); if (fd >= 0) { close(fd); } else if (errno == EBUSY) { MSG(0, "\tError: In use by the system!\n"); free(st_buf); return -1; } } free(st_buf); return ret; #endif } int f2fs_devs_are_umounted(void) { int i; for (i = 0; i < c.ndevs; i++) if (f2fs_dev_is_umounted((char *)c.devices[i].path)) return -1; return 0; } void get_kernel_version(__u8 *version) { int i; for (i = 0; i < VERSION_LEN; i++) { if (version[i] == '\n') break; } memset(version + i, 0, VERSION_LEN + 1 - i); } void get_kernel_uname_version(__u8 *version) { #ifdef HAVE_SYS_UTSNAME_H struct utsname buf; memset(version, 0, VERSION_LEN); if (uname(&buf)) return; snprintf((char *)version, VERSION_LEN, "%s %s", buf.release, buf.version); #else memset(version, 0, VERSION_LEN); #endif } #if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE) #define BLKGETSIZE _IO(0x12,96) #endif #if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64) #define BLKGETSIZE64 _IOR(0x12,114, size_t) #endif #if defined(__linux__) && defined(_IO) && !defined(BLKSSZGET) #define BLKSSZGET _IO(0x12,104) #endif #if defined(__APPLE__) #include #define BLKGETSIZE DKIOCGETBLOCKCOUNT #define BLKSSZGET DKIOCGETBLOCKCOUNT #endif /* APPLE_DARWIN */ #ifndef ANDROID_WINDOWS_HOST int get_device_info(int i) { int32_t fd = 0; uint32_t sector_size; #ifndef BLKGETSIZE64 uint32_t total_sectors; #endif struct stat *stat_buf; #ifdef HDIO_GETGIO struct hd_geometry geom; #endif #if !defined(WITH_ANDROID) && defined(__linux__) sg_io_hdr_t io_hdr; unsigned char reply_buffer[96] = {0}; unsigned char model_inq[6] = {MODELINQUIRY}; #endif struct device_info *dev = c.devices + i; if (c.sparse_mode) { fd = open((char *)dev->path, O_RDWR | O_CREAT | O_BINARY, 0644); } else { fd = open((char *)dev->path, O_RDWR); } if (fd < 0) { MSG(0, "\tError: Failed to open the device!\n"); return -1; } dev->fd = fd; if (c.sparse_mode) { if (f2fs_init_sparse_file()) return -1; } if (c.kd == -1) { #if !defined(WITH_ANDROID) && defined(__linux__) c.kd = open("/proc/version", O_RDONLY); #endif if (c.kd < 0) { MSG(0, "\tInfo: No support kernel version!\n"); c.kd = -2; } } stat_buf = malloc(sizeof(struct stat)); if (fstat(fd, stat_buf) < 0 ) { MSG(0, "\tError: Failed to get the device stat!\n"); free(stat_buf); return -1; } if (c.sparse_mode) { dev->total_sectors = c.device_size / dev->sector_size; } else if (S_ISREG(stat_buf->st_mode)) { dev->total_sectors = stat_buf->st_size / dev->sector_size; } else if (S_ISBLK(stat_buf->st_mode)) { #ifdef BLKSSZGET if (ioctl(fd, BLKSSZGET, §or_size) < 0) MSG(0, "\tError: Using the default sector size\n"); else if (dev->sector_size < sector_size) dev->sector_size = sector_size; #endif #ifdef BLKGETSIZE64 if (ioctl(fd, BLKGETSIZE64, &dev->total_sectors) < 0) { MSG(0, "\tError: Cannot get the device size\n"); free(stat_buf); return -1; } #else if (ioctl(fd, BLKGETSIZE, &total_sectors) < 0) { MSG(0, "\tError: Cannot get the device size\n"); free(stat_buf); return -1; } dev->total_sectors = total_sectors; #endif dev->total_sectors /= dev->sector_size; if (i == 0) { #ifdef HDIO_GETGIO if (ioctl(fd, HDIO_GETGEO, &geom) < 0) c.start_sector = 0; else c.start_sector = geom.start; #else c.start_sector = 0; #endif } #if !defined(WITH_ANDROID) && defined(__linux__) /* Send INQUIRY command */ memset(&io_hdr, 0, sizeof(sg_io_hdr_t)); io_hdr.interface_id = 'S'; io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; io_hdr.dxfer_len = sizeof(reply_buffer); io_hdr.dxferp = reply_buffer; io_hdr.cmd_len = sizeof(model_inq); io_hdr.cmdp = model_inq; io_hdr.timeout = 1000; if (!ioctl(fd, SG_IO, &io_hdr)) { int i = 16; MSG(0, "Info: [%s] Disk Model: ", dev->path); while (reply_buffer[i] != '`' && i < 80) printf("%c", reply_buffer[i++]); printf("\n"); } #endif } else { MSG(0, "\tError: Volume type is not supported!!!\n"); free(stat_buf); return -1; } if (!c.sector_size) { c.sector_size = dev->sector_size; c.sectors_per_blk = F2FS_BLKSIZE / c.sector_size; } else if (c.sector_size != c.devices[i].sector_size) { MSG(0, "\tError: Different sector sizes!!!\n"); free(stat_buf); return -1; } #if !defined(WITH_ANDROID) && defined(__linux__) if (S_ISBLK(stat_buf->st_mode)) f2fs_get_zoned_model(i); if (dev->zoned_model != F2FS_ZONED_NONE) { if (dev->zoned_model == F2FS_ZONED_HM) c.zoned_model = F2FS_ZONED_HM; if (f2fs_get_zone_blocks(i)) { MSG(0, "\tError: Failed to get number of blocks per zone\n"); free(stat_buf); return -1; } if (f2fs_check_zones(i)) { MSG(0, "\tError: Failed to check zone configuration\n"); free(stat_buf); return -1; } MSG(0, "Info: Host-%s zoned block device:\n", (dev->zoned_model == F2FS_ZONED_HA) ? "aware" : "managed"); MSG(0, " %u zones, %u randomly writeable zones\n", dev->nr_zones, dev->nr_rnd_zones); MSG(0, " %lu blocks per zone\n", dev->zone_blocks); } #endif /* adjust wanted_total_sectors */ if (c.wanted_total_sectors != -1) { MSG(0, "Info: wanted sectors = %"PRIu64" (in %"PRIu64" bytes)\n", c.wanted_total_sectors, c.wanted_sector_size); if (c.wanted_sector_size == -1) { c.wanted_sector_size = dev->sector_size; } else if (dev->sector_size != c.wanted_sector_size) { c.wanted_total_sectors *= c.wanted_sector_size; c.wanted_total_sectors /= dev->sector_size; } } c.total_sectors += dev->total_sectors; free(stat_buf); return 0; } #else #include "windows.h" #include "winioctl.h" #if (_WIN32_WINNT >= 0x0500) #define HAVE_GET_FILE_SIZE_EX 1 #endif static int win_get_device_size(const char *file, uint64_t *device_size) { HANDLE dev; PARTITION_INFORMATION pi; DISK_GEOMETRY gi; DWORD retbytes; #ifdef HAVE_GET_FILE_SIZE_EX LARGE_INTEGER filesize; #else DWORD filesize; #endif /* HAVE_GET_FILE_SIZE_EX */ dev = CreateFile(file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE , NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (dev == INVALID_HANDLE_VALUE) return EBADF; if (DeviceIoControl(dev, IOCTL_DISK_GET_PARTITION_INFO, &pi, sizeof(PARTITION_INFORMATION), &pi, sizeof(PARTITION_INFORMATION), &retbytes, NULL)) { *device_size = pi.PartitionLength.QuadPart; } else if (DeviceIoControl(dev, IOCTL_DISK_GET_DRIVE_GEOMETRY, &gi, sizeof(DISK_GEOMETRY), &gi, sizeof(DISK_GEOMETRY), &retbytes, NULL)) { *device_size = gi.BytesPerSector * gi.SectorsPerTrack * gi.TracksPerCylinder * gi.Cylinders.QuadPart; #ifdef HAVE_GET_FILE_SIZE_EX } else if (GetFileSizeEx(dev, &filesize)) { *device_size = filesize.QuadPart; } #else } else { filesize = GetFileSize(dev, NULL); if (INVALID_FILE_SIZE != filesize) return -1; *device_size = filesize; } #endif /* HAVE_GET_FILE_SIZE_EX */ CloseHandle(dev); return 0; } int get_device_info(int i) { struct device_info *dev = c.devices + i; uint64_t device_size = 0; int32_t fd = 0; /* Block device target is not supported on Windows. */ if (!c.sparse_mode) { if (win_get_device_size(dev->path, &device_size)) { MSG(0, "\tError: Failed to get device size!\n"); return -1; } } else { device_size = c.device_size; } if (c.sparse_mode) { fd = open((char *)dev->path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644); } else { fd = open((char *)dev->path, O_RDWR | O_BINARY); } if (fd < 0) { MSG(0, "\tError: Failed to open the device!\n"); return -1; } dev->fd = fd; dev->total_sectors = device_size / dev->sector_size; c.start_sector = 0; c.sector_size = dev->sector_size; c.sectors_per_blk = F2FS_BLKSIZE / c.sector_size; c.total_sectors += dev->total_sectors; return 0; } #endif int f2fs_get_device_info(void) { int i; for (i = 0; i < c.ndevs; i++) if (get_device_info(i)) return -1; if (c.wanted_total_sectors < c.total_sectors) { MSG(0, "Info: total device sectors = %"PRIu64" (in %u bytes)\n", c.total_sectors, c.sector_size); c.total_sectors = c.wanted_total_sectors; c.devices[0].total_sectors = c.total_sectors; } if (c.total_sectors * c.sector_size > (u_int64_t)F2FS_MAX_SEGMENT * 2 * 1024 * 1024) { MSG(0, "\tError: F2FS can support 16TB at most!!!\n"); return -1; } for (i = 0; i < c.ndevs; i++) { if (c.devices[i].zoned_model != F2FS_ZONED_NONE) { if (c.zone_blocks && c.zone_blocks != c.devices[i].zone_blocks) { MSG(0, "\tError: not support different zone sizes!!!\n"); return -1; } c.zone_blocks = c.devices[i].zone_blocks; } } /* * Align sections to the device zone size * and align F2FS zones to the device zones. */ if (c.zone_blocks) { c.segs_per_sec = c.zone_blocks / DEFAULT_BLOCKS_PER_SEGMENT; c.secs_per_zone = 1; } else { c.zoned_mode = 0; } c.segs_per_zone = c.segs_per_sec * c.secs_per_zone; MSG(0, "Info: Segments per section = %d\n", c.segs_per_sec); MSG(0, "Info: Sections per zone = %d\n", c.secs_per_zone); MSG(0, "Info: sector size = %u\n", c.sector_size); MSG(0, "Info: total sectors = %"PRIu64" (%"PRIu64" MB)\n", c.total_sectors, (c.total_sectors * (c.sector_size >> 9)) >> 11); return 0; }