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authorDenys Vlasenko2016-08-23 16:13:33 +0200
committerDenys Vlasenko2016-08-23 16:13:33 +0200
commit607f2b404e992174d7c5956d11e8f35f78d2701f (patch)
tree60a7bb8d2a187348f055b60d8ee399cfe2e47aa4
parent6b76e2345490a1f65423b72580f84d09b3983ab6 (diff)
downloadbusybox-607f2b404e992174d7c5956d11e8f35f78d2701f.zip
busybox-607f2b404e992174d7c5956d11e8f35f78d2701f.tar.gz
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>
-rw-r--r--util-linux/fdisk.c190
1 files changed, 103 insertions, 87 deletions
diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c
index 6391f9b..6b5e388 100644
--- a/util-linux/fdisk.c
+++ b/util-linux/fdisk.c
@@ -363,7 +363,6 @@ struct globals {
jmp_buf listingbuf;
char line_buffer[80];
- char partname_buffer[80];
/* Raw disk label. For DOS-type partition tables the MBR,
* with descriptions of the primary partitions. */
char MBRbuffer[MAX_SECTOR_SIZE];
@@ -399,7 +398,6 @@ struct globals {
#define total_number_of_sectors (G.total_number_of_sectors)
#define listingbuf (G.listingbuf )
#define line_buffer (G.line_buffer )
-#define partname_buffer (G.partname_buffer)
#define MBRbuffer (G.MBRbuffer )
#define ptes (G.ptes )
#define INIT_G() do { \
@@ -468,9 +466,6 @@ static sector_t bb_BLKGETSIZE_sectors(int fd)
#define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
-#define hsc2sector(h,s,c) \
- (sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c)))
-
static void
close_dev_fd(void)
{
@@ -478,44 +473,6 @@ close_dev_fd(void)
xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd);
}
-/*
- * Return partition name - uses static storage
- */
-static const char *
-partname(const char *dev, int pno, int lth)
-{
- const char *p;
- int w, wp;
- int bufsiz;
- char *bufp;
-
- bufp = partname_buffer;
- bufsiz = sizeof(partname_buffer);
-
- w = strlen(dev);
- p = "";
-
- if (isdigit(dev[w-1]))
- p = "p";
-
- /* devfs kludge - note: fdisk partition names are not supposed
- to equal kernel names, so there is no reason to do this */
- if (strcmp(dev + w - 4, "disc") == 0) {
- w -= 4;
- p = "part";
- }
-
- wp = strlen(p);
-
- if (lth) {
- snprintf(bufp, bufsiz, "%*.*s%s%-2u",
- lth-wp-2, w, dev, p, pno);
- } else {
- snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
- }
- return bufp;
-}
-
static ALWAYS_INLINE struct partition *
get_part_table(int i)
{
@@ -1898,14 +1855,14 @@ check_consistency(const struct partition *p, int partition)
return; /* do not check extended partitions */
/* physical beginning c, h, s */
- pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
+ pbc = cylinder(p->sector, p->cyl);
pbh = p->head;
- pbs = p->sector & 0x3f;
+ pbs = sector(p->sector);
/* physical ending c, h, s */
- pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
+ pec = cylinder(p->end_sector, p->end_cyl);
peh = p->end_head;
- pes = p->end_sector & 0x3f;
+ pes = sector(p->end_sector);
/* compute logical beginning (c, h, s) */
linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
@@ -1916,17 +1873,17 @@ check_consistency(const struct partition *p, int partition)
/* Same physical / logical beginning? */
if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
printf("Partition %u has different physical/logical "
- "beginnings (non-Linux?):\n", partition + 1);
- printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs);
- printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs);
+ "start (non-Linux?):\n", partition + 1);
+ printf(" phys=(%u,%u,%u) ", pbc, pbh, pbs);
+ printf("logical=(%u,%u,%u)\n", lbc, lbh, lbs);
}
/* Same physical / logical ending? */
if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
printf("Partition %u has different physical/logical "
- "endings:\n", partition + 1);
- printf(" phys=(%u, %u, %u) ", pec, peh, pes);
- printf("logical=(%u, %u, %u)\n", lec, leh, les);
+ "end:\n", partition + 1);
+ printf(" phys=(%u,%u,%u) ", pec, peh, pes);
+ printf("logical=(%u,%u,%u)\n", lec, leh, les);
}
/* Ending on cylinder boundary? */
@@ -2099,10 +2056,53 @@ fix_partition_table_order(void)
}
#endif
+/* Return partition name */
+static const char *
+partname(const char *dev, int pno, int lth)
+{
+ const char *p;
+ int w, wp;
+ int bufsiz;
+ char *bufp;
+
+ bufp = auto_string(xzalloc(80));
+ bufsiz = 80;
+
+ w = strlen(dev);
+ p = "";
+
+ if (isdigit(dev[w-1]))
+ p = "p";
+
+ /* devfs kludge - note: fdisk partition names are not supposed
+ to equal kernel names, so there is no reason to do this */
+ if (strcmp(dev + w - 4, "disc") == 0) {
+ w -= 4;
+ p = "part";
+ }
+
+ wp = strlen(p);
+
+ if (lth) {
+ snprintf(bufp, bufsiz, "%*.*s%s%-2u",
+ lth-wp-2, w, dev, p, pno);
+ } else {
+ snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
+ }
+ return bufp;
+}
+
+static const char *
+chs_string11(unsigned cyl, unsigned head, unsigned sect)
+{
+ char *buf = auto_string(xzalloc(sizeof(int)*3 * 3));
+ sprintf(buf, "%u,%u,%u", cylinder(sect,cyl), head, sector(sect));
+ return buf;
+}
+
static void
list_table(int xtra)
{
- const struct partition *p;
int i, w;
if (LABEL_IS_SUN) {
@@ -2126,50 +2126,62 @@ list_table(int xtra)
}
/* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
- but if the device name ends in a digit, say /dev/foo1,
- then the partition is called /dev/foo1p3. */
+ * but if the device name ends in a digit, say /dev/foo1,
+ * then the partition is called /dev/foo1p3.
+ */
w = strlen(disk_device);
if (w && isdigit(disk_device[w-1]))
w++;
- if (w < 5)
- w = 5;
+ if (w < 7)
+ w = 7;
- // 1 12345678901 12345678901 12345678901 12
- printf("%*s Boot Start End Blocks Id System\n",
- w+1, "Device");
+ printf("%-*s Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type\n",
+ w-1, "Device");
for (i = 0; i < g_partitions; i++) {
+ const struct partition *p;
const struct pte *pe = &ptes[i];
- sector_t psects;
- sector_t pblocks;
- unsigned podd;
+ char boot4[4];
+ char numstr6[6];
+ sector_t start_sect;
+ sector_t end_sect;
+ sector_t nr_sects;
p = pe->part_table;
if (!p || is_cleared_partition(p))
continue;
- psects = get_nr_sects(p);
- pblocks = psects;
- podd = 0;
-
- if (sector_size < 1024) {
- pblocks /= (1024 / sector_size);
- podd = psects % (1024 / sector_size);
+ sprintf(boot4, "%02x", p->boot_ind);
+ if ((p->boot_ind & 0x7f) == 0) {
+ /* 0x80 shown as '*', 0x00 is ' ' */
+ boot4[0] = p->boot_ind ? '*' : ' ';
+ boot4[1] = ' ';
}
- if (sector_size > 1024)
- pblocks *= (sector_size / 1024);
- printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n",
- partname(disk_device, i+1, w+2),
- !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
- ? '*' : '?',
- cround(get_partition_start_from_dev_start(pe)), /* start */
- cround(get_partition_start_from_dev_start(pe) + psects /* end */
- - (psects ? 1 : 0)),
- pblocks, podd ? '+' : ' ', /* odd flag on end */
- p->sys_ind, /* type id */
- partition_type(p->sys_ind)); /* type name */
+ start_sect = get_partition_start_from_dev_start(pe);
+ end_sect = start_sect;
+ nr_sects = get_nr_sects(p);
+ if (nr_sects != 0)
+ end_sect += nr_sects - 1;
+ smart_ulltoa5((ullong)nr_sects * sector_size,
+ numstr6, " KMGTPEZY")[0] = '\0';
+
+#define SFMT SECT_FMT
+ // Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type
+ printf("%s%s %-11s"/**/" %-11s"/**/" %10"SFMT"u %10"SFMT"u %10"SFMT"u %s %2x %s\n",
+ partname(disk_device, i+1, w+2),
+ boot4,
+ chs_string11(p->cyl, p->head, p->sector),
+ chs_string11(p->end_cyl, p->end_head, p->end_sector),
+ start_sect,
+ end_sect,
+ nr_sects,
+ numstr6,
+ p->sys_ind,
+ partition_type(p->sys_ind)
+ );
+#undef SFMT
check_consistency(p, i);
}
@@ -2198,13 +2210,17 @@ x_list_table(int extend)
p = (extend ? pe->ext_pointer : pe->part_table);
if (p != NULL) {
printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n",
- i + 1, p->boot_ind, p->head,
+ i + 1, p->boot_ind,
+ p->head,
sector(p->sector),
- cylinder(p->sector, p->cyl), p->end_head,
+ cylinder(p->sector, p->cyl),
+ p->end_head,
sector(p->end_sector),
cylinder(p->end_sector, p->end_cyl),
- get_start_sect(p), get_nr_sects(p),
- p->sys_ind);
+ get_start_sect(p),
+ get_nr_sects(p),
+ p->sys_ind
+ );
if (p->sys_ind)
check_consistency(p, i);
}