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@@ -1,4 +1,4 @@
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-/*
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+/*
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* ptgen - partition table generator
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* Copyright (C) 2006 by Felix Fietkau <[email protected]>
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*
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@@ -9,12 +9,12 @@
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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- *
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+ *
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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- *
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+ *
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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@@ -63,25 +63,26 @@ struct partinfo parts[4];
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char *filename = NULL;
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-/*
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+/*
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* parse the size argument, which is either
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* a simple number (K assumed) or
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* K, M or G
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*
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* returns the size in KByte
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*/
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-static long to_kbytes(const char *string) {
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+static long to_kbytes(const char *string)
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+{
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int exp = 0;
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long result;
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char *end;
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result = strtoul(string, &end, 0);
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switch (tolower(*end)) {
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- case 'k' :
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- case '\0' : exp = 0; break;
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- case 'm' : exp = 1; break;
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- case 'g' : exp = 2; break;
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- default: return 0;
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+ case 'k' :
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+ case '\0' : exp = 0; break;
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+ case 'm' : exp = 1; break;
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+ case 'g' : exp = 2; break;
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+ default: return 0;
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}
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if (*end)
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@@ -99,9 +100,10 @@ static long to_kbytes(const char *string) {
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}
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/* convert the sector number into a CHS value for the partition table */
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-static void to_chs(long sect, unsigned char chs[3]) {
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+static void to_chs(long sect, unsigned char chs[3])
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+{
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int c,h,s;
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-
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+
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s = (sect % sectors) + 1;
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sect = sect / sectors;
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h = sect % heads;
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@@ -116,10 +118,11 @@ static void to_chs(long sect, unsigned char chs[3]) {
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}
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/* round the sector number up to the next cylinder */
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-static inline unsigned long round_to_cyl(long sect) {
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+static inline unsigned long round_to_cyl(long sect)
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+{
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int cyl_size = heads * sectors;
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- return sect + cyl_size - (sect % cyl_size);
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+ return sect + cyl_size - (sect % cyl_size);
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}
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/* round the sector number up to the kb_align boundary */
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@@ -131,7 +134,7 @@ static inline unsigned long round_to_kb(long sect) {
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static int gen_ptable(uint32_t signature, int nr)
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{
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struct pte pte[4];
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- unsigned long sect = 0;
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+ unsigned long sect = 0;
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int i, fd, ret = -1, start, len;
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memset(pte, 0, sizeof(struct pte) * 4);
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@@ -140,22 +143,27 @@ static int gen_ptable(uint32_t signature, int nr)
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fprintf(stderr, "Invalid size in partition %d!\n", i);
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return -1;
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}
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+
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pte[i].active = ((i + 1) == active) ? 0x80 : 0;
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pte[i].type = parts[i].type;
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+
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start = sect + sectors;
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if (kb_align != 0)
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start = round_to_kb(start);
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pte[i].start = cpu_to_le32(start);
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+
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sect = start + parts[i].size * 2;
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if (kb_align == 0)
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sect = round_to_cyl(sect);
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pte[i].length = cpu_to_le32(len = sect - start);
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+
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to_chs(start, pte[i].chs_start);
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to_chs(start + len - 1, pte[i].chs_end);
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+
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if (verbose)
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- fprintf(stderr, "Partition %d: start=%ld, end=%ld, size=%ld\n", i, (long) start * 512, ((long) start + (long) len) * 512, (long) len * 512);
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- printf("%ld\n", ((long) start * 512));
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- printf("%ld\n", ((long) len * 512));
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+ fprintf(stderr, "Partition %d: start=%ld, end=%ld, size=%ld\n", i, (long)start * 512, ((long)start + (long)len) * 512, (long)len * 512);
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+ printf("%ld\n", (long)start * 512);
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+ printf("%ld\n", (long)len * 512);
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}
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if ((fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644)) < 0) {
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@@ -179,7 +187,7 @@ static int gen_ptable(uint32_t signature, int nr)
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fprintf(stderr, "write failed.\n");
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goto fail;
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}
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-
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+
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ret = 0;
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fail:
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close(fd);
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@@ -188,7 +196,7 @@ fail:
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static void usage(char *prog)
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{
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- fprintf(stderr, "Usage: %s [-v] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [[-t <type>] -p <size>...] \n", prog);
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+ fprintf(stderr, "Usage: %s [-v] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [[-t <type>] -p <size>...] \n", prog);
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exit(1);
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}
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@@ -208,10 +216,10 @@ int main (int argc, char **argv)
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verbose++;
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break;
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case 'h':
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- heads = (int) strtoul(optarg, NULL, 0);
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+ heads = (int)strtoul(optarg, NULL, 0);
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break;
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case 's':
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- sectors = (int) strtoul(optarg, NULL, 0);
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+ sectors = (int)strtoul(optarg, NULL, 0);
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break;
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case 'p':
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if (part > 3) {
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@@ -222,15 +230,15 @@ int main (int argc, char **argv)
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parts[part++].type = type;
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break;
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case 't':
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- type = (char) strtoul(optarg, NULL, 16);
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+ type = (char)strtoul(optarg, NULL, 16);
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break;
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case 'a':
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- active = (int) strtoul(optarg, NULL, 0);
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+ active = (int)strtoul(optarg, NULL, 0);
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if ((active < 0) || (active > 4))
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active = 0;
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break;
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case 'l':
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- kb_align = (int) strtoul(optarg, NULL, 0) * 2;
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+ kb_align = (int)strtoul(optarg, NULL, 0) * 2;
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break;
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case 'S':
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signature = strtoul(optarg, NULL, 0);
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@@ -241,7 +249,7 @@ int main (int argc, char **argv)
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}
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}
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argc -= optind;
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- if (argc || (heads <= 0) || (sectors <= 0) || !filename)
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+ if (argc || (heads <= 0) || (sectors <= 0) || !filename)
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usage(argv[0]);
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return gen_ptable(signature, part);
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