fdisk: print much less cryptic partition table
Before: Device Boot Start End Blocks Id System /dev/sdb1 * 1 998 255471+ 6 FAT16 What are "blocks"? What is that "+"? How big is this partition? Is start/end shown came from LBA fields or CHS fields? Why are we torturing the user?? After: Device Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type /dev/sdb1 * 0,1,1 996,15,32 32 510974 510943 249M 6 FAT16 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
6b76e23454
commit
607f2b404e
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@ -363,7 +363,6 @@ struct globals {
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jmp_buf listingbuf;
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char line_buffer[80];
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char partname_buffer[80];
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/* Raw disk label. For DOS-type partition tables the MBR,
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* with descriptions of the primary partitions. */
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char MBRbuffer[MAX_SECTOR_SIZE];
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@ -399,7 +398,6 @@ struct globals {
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#define total_number_of_sectors (G.total_number_of_sectors)
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#define listingbuf (G.listingbuf )
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#define line_buffer (G.line_buffer )
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#define partname_buffer (G.partname_buffer)
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#define MBRbuffer (G.MBRbuffer )
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#define ptes (G.ptes )
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#define INIT_G() do { \
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@ -468,9 +466,6 @@ static sector_t bb_BLKGETSIZE_sectors(int fd)
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#define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
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#define hsc2sector(h,s,c) \
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(sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c)))
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static void
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close_dev_fd(void)
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{
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@ -478,44 +473,6 @@ close_dev_fd(void)
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xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd);
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}
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/*
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* Return partition name - uses static storage
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*/
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static const char *
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partname(const char *dev, int pno, int lth)
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{
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const char *p;
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int w, wp;
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int bufsiz;
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char *bufp;
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bufp = partname_buffer;
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bufsiz = sizeof(partname_buffer);
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w = strlen(dev);
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p = "";
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if (isdigit(dev[w-1]))
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p = "p";
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/* devfs kludge - note: fdisk partition names are not supposed
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to equal kernel names, so there is no reason to do this */
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if (strcmp(dev + w - 4, "disc") == 0) {
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w -= 4;
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p = "part";
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}
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wp = strlen(p);
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if (lth) {
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snprintf(bufp, bufsiz, "%*.*s%s%-2u",
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lth-wp-2, w, dev, p, pno);
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} else {
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snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
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}
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return bufp;
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}
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static ALWAYS_INLINE struct partition *
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get_part_table(int i)
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{
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@ -1898,14 +1855,14 @@ check_consistency(const struct partition *p, int partition)
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return; /* do not check extended partitions */
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/* physical beginning c, h, s */
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pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
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pbc = cylinder(p->sector, p->cyl);
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pbh = p->head;
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pbs = p->sector & 0x3f;
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pbs = sector(p->sector);
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/* physical ending c, h, s */
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pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
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pec = cylinder(p->end_sector, p->end_cyl);
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peh = p->end_head;
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pes = p->end_sector & 0x3f;
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pes = sector(p->end_sector);
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/* compute logical beginning (c, h, s) */
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linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
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@ -1916,17 +1873,17 @@ check_consistency(const struct partition *p, int partition)
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/* Same physical / logical beginning? */
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if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
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printf("Partition %u has different physical/logical "
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"beginnings (non-Linux?):\n", partition + 1);
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printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs);
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printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs);
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"start (non-Linux?):\n", partition + 1);
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printf(" phys=(%u,%u,%u) ", pbc, pbh, pbs);
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printf("logical=(%u,%u,%u)\n", lbc, lbh, lbs);
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}
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/* Same physical / logical ending? */
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if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
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printf("Partition %u has different physical/logical "
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"endings:\n", partition + 1);
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printf(" phys=(%u, %u, %u) ", pec, peh, pes);
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printf("logical=(%u, %u, %u)\n", lec, leh, les);
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"end:\n", partition + 1);
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printf(" phys=(%u,%u,%u) ", pec, peh, pes);
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printf("logical=(%u,%u,%u)\n", lec, leh, les);
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}
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/* Ending on cylinder boundary? */
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@ -2099,10 +2056,53 @@ fix_partition_table_order(void)
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}
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#endif
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/* Return partition name */
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static const char *
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partname(const char *dev, int pno, int lth)
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{
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const char *p;
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int w, wp;
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int bufsiz;
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char *bufp;
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bufp = auto_string(xzalloc(80));
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bufsiz = 80;
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w = strlen(dev);
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p = "";
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if (isdigit(dev[w-1]))
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p = "p";
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/* devfs kludge - note: fdisk partition names are not supposed
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to equal kernel names, so there is no reason to do this */
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if (strcmp(dev + w - 4, "disc") == 0) {
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w -= 4;
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p = "part";
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}
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wp = strlen(p);
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if (lth) {
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snprintf(bufp, bufsiz, "%*.*s%s%-2u",
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lth-wp-2, w, dev, p, pno);
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} else {
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snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
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}
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return bufp;
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}
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static const char *
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chs_string11(unsigned cyl, unsigned head, unsigned sect)
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{
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char *buf = auto_string(xzalloc(sizeof(int)*3 * 3));
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sprintf(buf, "%u,%u,%u", cylinder(sect,cyl), head, sector(sect));
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return buf;
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}
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static void
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list_table(int xtra)
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{
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const struct partition *p;
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int i, w;
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if (LABEL_IS_SUN) {
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@ -2126,50 +2126,62 @@ list_table(int xtra)
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}
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/* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
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but if the device name ends in a digit, say /dev/foo1,
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then the partition is called /dev/foo1p3. */
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* but if the device name ends in a digit, say /dev/foo1,
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* then the partition is called /dev/foo1p3.
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*/
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w = strlen(disk_device);
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if (w && isdigit(disk_device[w-1]))
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w++;
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if (w < 5)
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w = 5;
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if (w < 7)
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w = 7;
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// 1 12345678901 12345678901 12345678901 12
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printf("%*s Boot Start End Blocks Id System\n",
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w+1, "Device");
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printf("%-*s Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type\n",
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w-1, "Device");
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for (i = 0; i < g_partitions; i++) {
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const struct partition *p;
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const struct pte *pe = &ptes[i];
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sector_t psects;
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sector_t pblocks;
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unsigned podd;
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char boot4[4];
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char numstr6[6];
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sector_t start_sect;
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sector_t end_sect;
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sector_t nr_sects;
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p = pe->part_table;
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if (!p || is_cleared_partition(p))
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continue;
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psects = get_nr_sects(p);
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pblocks = psects;
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podd = 0;
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if (sector_size < 1024) {
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pblocks /= (1024 / sector_size);
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podd = psects % (1024 / sector_size);
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sprintf(boot4, "%02x", p->boot_ind);
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if ((p->boot_ind & 0x7f) == 0) {
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/* 0x80 shown as '*', 0x00 is ' ' */
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boot4[0] = p->boot_ind ? '*' : ' ';
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boot4[1] = ' ';
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}
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if (sector_size > 1024)
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pblocks *= (sector_size / 1024);
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printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n",
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start_sect = get_partition_start_from_dev_start(pe);
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end_sect = start_sect;
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nr_sects = get_nr_sects(p);
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if (nr_sects != 0)
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end_sect += nr_sects - 1;
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smart_ulltoa5((ullong)nr_sects * sector_size,
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numstr6, " KMGTPEZY")[0] = '\0';
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#define SFMT SECT_FMT
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// Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type
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printf("%s%s %-11s"/**/" %-11s"/**/" %10"SFMT"u %10"SFMT"u %10"SFMT"u %s %2x %s\n",
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partname(disk_device, i+1, w+2),
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!p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
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? '*' : '?',
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cround(get_partition_start_from_dev_start(pe)), /* start */
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cround(get_partition_start_from_dev_start(pe) + psects /* end */
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- (psects ? 1 : 0)),
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pblocks, podd ? '+' : ' ', /* odd flag on end */
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p->sys_ind, /* type id */
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partition_type(p->sys_ind)); /* type name */
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boot4,
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chs_string11(p->cyl, p->head, p->sector),
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chs_string11(p->end_cyl, p->end_head, p->end_sector),
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start_sect,
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end_sect,
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nr_sects,
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numstr6,
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p->sys_ind,
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partition_type(p->sys_ind)
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);
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#undef SFMT
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check_consistency(p, i);
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}
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@ -2198,13 +2210,17 @@ x_list_table(int extend)
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p = (extend ? pe->ext_pointer : pe->part_table);
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if (p != NULL) {
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printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n",
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i + 1, p->boot_ind, p->head,
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i + 1, p->boot_ind,
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p->head,
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sector(p->sector),
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cylinder(p->sector, p->cyl), p->end_head,
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cylinder(p->sector, p->cyl),
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p->end_head,
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sector(p->end_sector),
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cylinder(p->end_sector, p->end_cyl),
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get_start_sect(p), get_nr_sects(p),
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p->sys_ind);
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get_start_sect(p),
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get_nr_sects(p),
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p->sys_ind
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);
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if (p->sys_ind)
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check_consistency(p, i);
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}
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