diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/qemu-symbian-svp/qemu-img.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/qemu-img.c Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,756 @@ +/* + * QEMU disk image utility + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "qemu-common.h" +#include "block_int.h" +#include + +#ifdef _WIN32 +#define WIN32_LEAN_AND_MEAN +#include +#endif + +/* Default to cache=writeback as data integrity is not important for qemu-tcg. */ +#define BRDV_O_FLAGS BDRV_O_CACHE_WB + +static void __attribute__((noreturn)) error(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + fprintf(stderr, "qemu-img: "); + vfprintf(stderr, fmt, ap); + fprintf(stderr, "\n"); + exit(1); + va_end(ap); +} + +static void format_print(void *opaque, const char *name) +{ + printf(" %s", name); +} + +static void help(void) +{ + printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" + "usage: qemu-img command [command options]\n" + "QEMU disk image utility\n" + "\n" + "Command syntax:\n" + " create [-e] [-6] [-b base_image] [-f fmt] filename [size]\n" + " commit [-f fmt] filename\n" + " convert [-c] [-e] [-6] [-f fmt] [-O output_fmt] [-B output_base_image] filename [filename2 [...]] output_filename\n" + " info [-f fmt] filename\n" + "\n" + "Command parameters:\n" + " 'filename' is a disk image filename\n" + " 'base_image' is the read-only disk image which is used as base for a copy on\n" + " write image; the copy on write image only stores the modified data\n" + " 'output_base_image' forces the output image to be created as a copy on write\n" + " image of the specified base image; 'output_base_image' should have the same\n" + " content as the input's base image, however the path, image format, etc may\n" + " differ\n" + " 'fmt' is the disk image format. It is guessed automatically in most cases\n" + " 'size' is the disk image size in kilobytes. Optional suffixes 'M' (megabyte)\n" + " and 'G' (gigabyte) are supported\n" + " 'output_filename' is the destination disk image filename\n" + " 'output_fmt' is the destination format\n" + " '-c' indicates that target image must be compressed (qcow format only)\n" + " '-e' indicates that the target image must be encrypted (qcow format only)\n" + " '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n" + ); + printf("\nSupported format:"); + bdrv_iterate_format(format_print, NULL); + printf("\n"); + exit(1); +} + +#if defined(WIN32) +/* XXX: put correct support for win32 */ +static int read_password(char *buf, int buf_size) +{ + int c, i; + printf("Password: "); + fflush(stdout); + i = 0; + for(;;) { + c = getchar(); + if (c == '\n') + break; + if (i < (buf_size - 1)) + buf[i++] = c; + } + buf[i] = '\0'; + return 0; +} + +#else + +#include + +static struct termios oldtty; + +static void term_exit(void) +{ + tcsetattr (0, TCSANOW, &oldtty); +} + +static void term_init(void) +{ + struct termios tty; + + tcgetattr (0, &tty); + oldtty = tty; + + tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP + |INLCR|IGNCR|ICRNL|IXON); + tty.c_oflag |= OPOST; + tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); + tty.c_cflag &= ~(CSIZE|PARENB); + tty.c_cflag |= CS8; + tty.c_cc[VMIN] = 1; + tty.c_cc[VTIME] = 0; + + tcsetattr (0, TCSANOW, &tty); + + atexit(term_exit); +} + +static int read_password(char *buf, int buf_size) +{ + uint8_t ch; + int i, ret; + + printf("password: "); + fflush(stdout); + term_init(); + i = 0; + for(;;) { + ret = read(0, &ch, 1); + if (ret == -1) { + if (errno == EAGAIN || errno == EINTR) { + continue; + } else { + ret = -1; + break; + } + } else if (ret == 0) { + ret = -1; + break; + } else { + if (ch == '\r') { + ret = 0; + break; + } + if (i < (buf_size - 1)) + buf[i++] = ch; + } + } + term_exit(); + buf[i] = '\0'; + printf("\n"); + return ret; +} +#endif + +static BlockDriverState *bdrv_new_open(const char *filename, + const char *fmt) +{ + BlockDriverState *bs; + BlockDriver *drv; + char password[256]; + + bs = bdrv_new(""); + if (!bs) + error("Not enough memory"); + if (fmt) { + drv = bdrv_find_format(fmt); + if (!drv) + error("Unknown file format '%s'", fmt); + } else { + drv = NULL; + } + if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { + error("Could not open '%s'", filename); + } + if (bdrv_is_encrypted(bs)) { + printf("Disk image '%s' is encrypted.\n", filename); + if (read_password(password, sizeof(password)) < 0) + error("No password given"); + if (bdrv_set_key(bs, password) < 0) + error("invalid password"); + } + return bs; +} + +static int img_create(int argc, char **argv) +{ + int c, ret, flags; + const char *fmt = "raw"; + const char *filename; + const char *base_filename = NULL; + uint64_t size; + const char *p; + BlockDriver *drv; + + flags = 0; + for(;;) { + c = getopt(argc, argv, "b:f:he6"); + if (c == -1) + break; + switch(c) { + case 'h': + help(); + break; + case 'b': + base_filename = optarg; + break; + case 'f': + fmt = optarg; + break; + case 'e': + flags |= BLOCK_FLAG_ENCRYPT; + break; + case '6': + flags |= BLOCK_FLAG_COMPAT6; + break; + } + } + if (optind >= argc) + help(); + filename = argv[optind++]; + size = 0; + if (base_filename) { + BlockDriverState *bs; + bs = bdrv_new_open(base_filename, NULL); + bdrv_get_geometry(bs, &size); + size *= 512; + bdrv_delete(bs); + } else { + if (optind >= argc) + help(); + p = argv[optind]; + size = strtoul(p, (char **)&p, 0); + if (*p == 'M') { + size *= 1024 * 1024; + } else if (*p == 'G') { + size *= 1024 * 1024 * 1024; + } else if (*p == 'k' || *p == 'K' || *p == '\0') { + size *= 1024; + } else { + help(); + } + } + drv = bdrv_find_format(fmt); + if (!drv) + error("Unknown file format '%s'", fmt); + printf("Formatting '%s', fmt=%s", + filename, fmt); + if (flags & BLOCK_FLAG_ENCRYPT) + printf(", encrypted"); + if (flags & BLOCK_FLAG_COMPAT6) + printf(", compatibility level=6"); + if (base_filename) { + printf(", backing_file=%s", + base_filename); + } + printf(", size=%" PRIu64 " kB\n", size / 1024); + ret = bdrv_create(drv, filename, size / 512, base_filename, flags); + if (ret < 0) { + if (ret == -ENOTSUP) { + error("Formatting or formatting option not supported for file format '%s'", fmt); + } else { + error("Error while formatting"); + } + } + return 0; +} + +static int img_commit(int argc, char **argv) +{ + int c, ret; + const char *filename, *fmt; + BlockDriver *drv; + BlockDriverState *bs; + + fmt = NULL; + for(;;) { + c = getopt(argc, argv, "f:h"); + if (c == -1) + break; + switch(c) { + case 'h': + help(); + break; + case 'f': + fmt = optarg; + break; + } + } + if (optind >= argc) + help(); + filename = argv[optind++]; + + bs = bdrv_new(""); + if (!bs) + error("Not enough memory"); + if (fmt) { + drv = bdrv_find_format(fmt); + if (!drv) + error("Unknown file format '%s'", fmt); + } else { + drv = NULL; + } + if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { + error("Could not open '%s'", filename); + } + ret = bdrv_commit(bs); + switch(ret) { + case 0: + printf("Image committed.\n"); + break; + case -ENOENT: + error("No disk inserted"); + break; + case -EACCES: + error("Image is read-only"); + break; + case -ENOTSUP: + error("Image is already committed"); + break; + default: + error("Error while committing image"); + break; + } + + bdrv_delete(bs); + return 0; +} + +static int is_not_zero(const uint8_t *sector, int len) +{ + int i; + len >>= 2; + for(i = 0;i < len; i++) { + if (((uint32_t *)sector)[i] != 0) + return 1; + } + return 0; +} + +/* + * Returns true iff the first sector pointed to by 'buf' contains at least + * a non-NUL byte. + * + * 'pnum' is set to the number of sectors (including and immediately following + * the first one) that are known to be in the same allocated/unallocated state. + */ +static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) +{ + int v, i; + + if (n <= 0) { + *pnum = 0; + return 0; + } + v = is_not_zero(buf, 512); + for(i = 1; i < n; i++) { + buf += 512; + if (v != is_not_zero(buf, 512)) + break; + } + *pnum = i; + return v; +} + +#define IO_BUF_SIZE 65536 + +static int img_convert(int argc, char **argv) +{ + int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors; + const char *fmt, *out_fmt, *out_baseimg, *out_filename; + BlockDriver *drv; + BlockDriverState **bs, *out_bs; + int64_t total_sectors, nb_sectors, sector_num, bs_offset; + uint64_t bs_sectors; + uint8_t buf[IO_BUF_SIZE]; + const uint8_t *buf1; + BlockDriverInfo bdi; + + fmt = NULL; + out_fmt = "raw"; + out_baseimg = NULL; + flags = 0; + for(;;) { + c = getopt(argc, argv, "f:O:B:hce6"); + if (c == -1) + break; + switch(c) { + case 'h': + help(); + break; + case 'f': + fmt = optarg; + break; + case 'O': + out_fmt = optarg; + break; + case 'B': + out_baseimg = optarg; + break; + case 'c': + flags |= BLOCK_FLAG_COMPRESS; + break; + case 'e': + flags |= BLOCK_FLAG_ENCRYPT; + break; + case '6': + flags |= BLOCK_FLAG_COMPAT6; + break; + } + } + + bs_n = argc - optind - 1; + if (bs_n < 1) help(); + + out_filename = argv[argc - 1]; + + if (bs_n > 1 && out_baseimg) + error("-B makes no sense when concatenating multiple input images"); + + bs = calloc(bs_n, sizeof(BlockDriverState *)); + if (!bs) + error("Out of memory"); + + total_sectors = 0; + for (bs_i = 0; bs_i < bs_n; bs_i++) { + bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt); + if (!bs[bs_i]) + error("Could not open '%s'", argv[optind + bs_i]); + bdrv_get_geometry(bs[bs_i], &bs_sectors); + total_sectors += bs_sectors; + } + + drv = bdrv_find_format(out_fmt); + if (!drv) + error("Unknown file format '%s'", out_fmt); + if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2) + error("Compression not supported for this file format"); + if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2) + error("Encryption not supported for this file format"); + if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk) + error("Alternative compatibility level not supported for this file format"); + if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS) + error("Compression and encryption not supported at the same time"); + + ret = bdrv_create(drv, out_filename, total_sectors, out_baseimg, flags); + if (ret < 0) { + if (ret == -ENOTSUP) { + error("Formatting not supported for file format '%s'", fmt); + } else { + error("Error while formatting '%s'", out_filename); + } + } + + out_bs = bdrv_new_open(out_filename, out_fmt); + + bs_i = 0; + bs_offset = 0; + bdrv_get_geometry(bs[0], &bs_sectors); + + if (flags & BLOCK_FLAG_COMPRESS) { + if (bdrv_get_info(out_bs, &bdi) < 0) + error("could not get block driver info"); + cluster_size = bdi.cluster_size; + if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) + error("invalid cluster size"); + cluster_sectors = cluster_size >> 9; + sector_num = 0; + for(;;) { + int64_t bs_num; + int remainder; + uint8_t *buf2; + + nb_sectors = total_sectors - sector_num; + if (nb_sectors <= 0) + break; + if (nb_sectors >= cluster_sectors) + n = cluster_sectors; + else + n = nb_sectors; + + bs_num = sector_num - bs_offset; + assert (bs_num >= 0); + remainder = n; + buf2 = buf; + while (remainder > 0) { + int nlow; + while (bs_num == bs_sectors) { + bs_i++; + assert (bs_i < bs_n); + bs_offset += bs_sectors; + bdrv_get_geometry(bs[bs_i], &bs_sectors); + bs_num = 0; + /* printf("changing part: sector_num=%lld, " + "bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n", + sector_num, bs_i, bs_offset, bs_sectors); */ + } + assert (bs_num < bs_sectors); + + nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; + + if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) + error("error while reading"); + + buf2 += nlow * 512; + bs_num += nlow; + + remainder -= nlow; + } + assert (remainder == 0); + + if (n < cluster_sectors) + memset(buf + n * 512, 0, cluster_size - n * 512); + if (is_not_zero(buf, cluster_size)) { + if (bdrv_write_compressed(out_bs, sector_num, buf, + cluster_sectors) != 0) + error("error while compressing sector %" PRId64, + sector_num); + } + sector_num += n; + } + /* signal EOF to align */ + bdrv_write_compressed(out_bs, 0, NULL, 0); + } else { + sector_num = 0; // total number of sectors converted so far + for(;;) { + nb_sectors = total_sectors - sector_num; + if (nb_sectors <= 0) + break; + if (nb_sectors >= (IO_BUF_SIZE / 512)) + n = (IO_BUF_SIZE / 512); + else + n = nb_sectors; + + while (sector_num - bs_offset >= bs_sectors) { + bs_i ++; + assert (bs_i < bs_n); + bs_offset += bs_sectors; + bdrv_get_geometry(bs[bs_i], &bs_sectors); + /* printf("changing part: sector_num=%lld, bs_i=%d, " + "bs_offset=%lld, bs_sectors=%lld\n", + sector_num, bs_i, bs_offset, bs_sectors); */ + } + + if (n > bs_offset + bs_sectors - sector_num) + n = bs_offset + bs_sectors - sector_num; + + /* If the output image is being created as a copy on write image, + assume that sectors which are unallocated in the input image + are present in both the output's and input's base images (no + need to copy them). */ + if (out_baseimg) { + if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, n, &n1)) { + sector_num += n1; + continue; + } + /* The next 'n1' sectors are allocated in the input image. Copy + only those as they may be followed by unallocated sectors. */ + n = n1; + } + + if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) + error("error while reading"); + /* NOTE: at the same time we convert, we do not write zero + sectors to have a chance to compress the image. Ideally, we + should add a specific call to have the info to go faster */ + buf1 = buf; + while (n > 0) { + /* If the output image is being created as a copy on write image, + copy all sectors even the ones containing only NUL bytes, + because they may differ from the sectors in the base image. */ + if (out_baseimg || is_allocated_sectors(buf1, n, &n1)) { + if (bdrv_write(out_bs, sector_num, buf1, n1) < 0) + error("error while writing"); + } + sector_num += n1; + n -= n1; + buf1 += n1 * 512; + } + } + } + bdrv_delete(out_bs); + for (bs_i = 0; bs_i < bs_n; bs_i++) + bdrv_delete(bs[bs_i]); + free(bs); + return 0; +} + +#ifdef _WIN32 +static int64_t get_allocated_file_size(const char *filename) +{ + typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); + get_compressed_t get_compressed; + struct _stati64 st; + + /* WinNT support GetCompressedFileSize to determine allocate size */ + get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); + if (get_compressed) { + DWORD high, low; + low = get_compressed(filename, &high); + if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) + return (((int64_t) high) << 32) + low; + } + + if (_stati64(filename, &st) < 0) + return -1; + return st.st_size; +} +#else +static int64_t get_allocated_file_size(const char *filename) +{ + struct stat st; + if (stat(filename, &st) < 0) + return -1; + return (int64_t)st.st_blocks * 512; +} +#endif + +static void dump_snapshots(BlockDriverState *bs) +{ + QEMUSnapshotInfo *sn_tab, *sn; + int nb_sns, i; + char buf[256]; + + nb_sns = bdrv_snapshot_list(bs, &sn_tab); + if (nb_sns <= 0) + return; + printf("Snapshot list:\n"); + printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); + for(i = 0; i < nb_sns; i++) { + sn = &sn_tab[i]; + printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); + } + qemu_free(sn_tab); +} + +static int img_info(int argc, char **argv) +{ + int c; + const char *filename, *fmt; + BlockDriver *drv; + BlockDriverState *bs; + char fmt_name[128], size_buf[128], dsize_buf[128]; + uint64_t total_sectors; + int64_t allocated_size; + char backing_filename[1024]; + char backing_filename2[1024]; + BlockDriverInfo bdi; + + fmt = NULL; + for(;;) { + c = getopt(argc, argv, "f:h"); + if (c == -1) + break; + switch(c) { + case 'h': + help(); + break; + case 'f': + fmt = optarg; + break; + } + } + if (optind >= argc) + help(); + filename = argv[optind++]; + + bs = bdrv_new(""); + if (!bs) + error("Not enough memory"); + if (fmt) { + drv = bdrv_find_format(fmt); + if (!drv) + error("Unknown file format '%s'", fmt); + } else { + drv = NULL; + } + if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { + error("Could not open '%s'", filename); + } + bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); + bdrv_get_geometry(bs, &total_sectors); + get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); + allocated_size = get_allocated_file_size(filename); + if (allocated_size < 0) + snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); + else + get_human_readable_size(dsize_buf, sizeof(dsize_buf), + allocated_size); + printf("image: %s\n" + "file format: %s\n" + "virtual size: %s (%" PRId64 " bytes)\n" + "disk size: %s\n", + filename, fmt_name, size_buf, + (total_sectors * 512), + dsize_buf); + if (bdrv_is_encrypted(bs)) + printf("encrypted: yes\n"); + if (bdrv_get_info(bs, &bdi) >= 0) { + if (bdi.cluster_size != 0) + printf("cluster_size: %d\n", bdi.cluster_size); + } + bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); + if (backing_filename[0] != '\0') { + path_combine(backing_filename2, sizeof(backing_filename2), + filename, backing_filename); + printf("backing file: %s (actual path: %s)\n", + backing_filename, + backing_filename2); + } + dump_snapshots(bs); + bdrv_delete(bs); + return 0; +} + +int main(int argc, char **argv) +{ + const char *cmd; + + bdrv_init(); + if (argc < 2) + help(); + cmd = argv[1]; + optind++; + if (!strcmp(cmd, "create")) { + img_create(argc, argv); + } else if (!strcmp(cmd, "commit")) { + img_commit(argc, argv); + } else if (!strcmp(cmd, "convert")) { + img_convert(argc, argv); + } else if (!strcmp(cmd, "info")) { + img_info(argc, argv); + } else { + help(); + } + return 0; +}