u_short, ulong exterminated

fdiskXXX: add a bit of sanity (not enough by far)

1 files changed, 32 insertions, 36 deletions

diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c
index 2af5a41b9..e4f7e5455 100644
--- a/util-linux/fdisk.c
+++ b/util-linux/fdisk.c
@@ -220,8 +220,8 @@ static int get_boot(enum action what);
 			}
 
 
-static int32_t get_start_sect(const struct partition *p);
-static int32_t get_nr_sects(const struct partition *p);
+static unsigned get_start_sect(const struct partition *p);
+static unsigned get_nr_sects(const struct partition *p);
 
 /*
  * per partition table entry data
@@ -338,7 +338,9 @@ read_hex(const struct systypes *sys)
 			continue;
 		}
 		v = bb_strtoul(line_ptr, NULL, 16);
-		if (errno || v > 0xff) continue;
+		if (v > 0xff)
+			/* Bad input also triggers this */
+			continue;
 		return v;
 	}
 }
@@ -393,15 +395,15 @@ STATIC_OSF void xbsd_print_disklabel(int);
 #define SGI_XLV         0x0c
 #define SGI_XVM         0x0d
 #define SGI_ENTIRE_DISK SGI_VOLUME
-#if defined(CONFIG_FEATURE_SGI_LABEL) || defined(CONFIG_FEATURE_SUN_LABEL)
+#if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
 static uint16_t
-__swap16(uint16_t x)
+fdisk_swap16(uint16_t x)
 {
 	return (x << 8) | (x >> 8);
 }
 
 static uint32_t
-__swap32(uint32_t x)
+fdisk_swap32(uint32_t x)
 {
 	return (x << 24) |
 	       ((x & 0xFF00) << 8) |
@@ -578,7 +580,7 @@ set_start_sect(struct partition *p, unsigned start_sect)
 }
 #endif
 
-static int32_t
+static unsigned
 get_start_sect(const struct partition *p)
 {
 	return read4_little_endian(p->start4);
@@ -586,13 +588,13 @@ get_start_sect(const struct partition *p)
 
 #if ENABLE_FEATURE_FDISK_WRITABLE
 static void
-set_nr_sects(struct partition *p, int32_t nr_sects)
+set_nr_sects(struct partition *p, unsigned nr_sects)
 {
 	store4_little_endian(p->size4, nr_sects);
 }
 #endif
 
-static int32_t
+static unsigned
 get_nr_sects(const struct partition *p)
 {
 	return read4_little_endian(p->size4);
@@ -1770,13 +1772,13 @@ change_sysid(void)
 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
 
 
-/* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993,
+/* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993,
  * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
  * Jan.  1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
  * Lubkin Oct.  1991). */
 
 static void
-long2chs(ulong ls, unsigned *c, unsigned *h, unsigned *s)
+linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s)
 {
 	int spc = heads * sectors;
 
@@ -1808,10 +1810,10 @@ check_consistency(const struct partition *p, int partition)
 	pes = p->end_sector & 0x3f;
 
 /* compute logical beginning (c, h, s) */
-	long2chs(get_start_sect(p), &lbc, &lbh, &lbs);
+	linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
 
 /* compute logical ending (c, h, s) */
-	long2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
+	linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
 
 /* Same physical / logical beginning? */
 	if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
@@ -2479,46 +2481,40 @@ write_table(void)
 static void
 reread_partition_table(int leave)
 {
-	int error = 0;
 	int i;
 
-	printf(_("Calling ioctl() to re-read partition table.\n"));
+	printf(_("Calling ioctl() to re-read partition table\n"));
 	sync();
-	sleep(2);
-	if ((i = ioctl(fd, BLKRRPART)) != 0) {
-		error = errno;
-	} else {
+	sleep(2); /* Huh? */
+	i = ioctl(fd, BLKRRPART);
+#if 0
+	else {
 		/* some kernel versions (1.2.x) seem to have trouble
 		   rereading the partition table, but if asked to do it
 		   twice, the second time works. - biro@yggdrasil.com */
 		sync();
 		sleep(2);
-		if ((i = ioctl(fd, BLKRRPART)) != 0)
-			error = errno;
+		i = ioctl(fd, BLKRRPART);
 	}
+#endif
 
 	if (i) {
-		printf(_("\nWARNING: Re-reading the partition table "
-			 "failed with error %d: %s.\n"
-			 "The kernel still uses the old table.\n"
-			 "The new table will be used "
-			 "at the next reboot.\n"),
-			error, strerror(error));
+		bb_perror_msg("WARNING: rereading partition table "
+			"failed, kernel still uses old table");
 	}
 
+#if 0
 	if (dos_changed)
 		printf(
 		_("\nWARNING: If you have created or modified any DOS 6.x\n"
 		"partitions, please see the fdisk manual page for additional\n"
 		"information.\n"));
+#endif
 
 	if (leave) {
-		close(fd);
-
-		printf(_("Syncing disks.\n"));
-		sync();
-		sleep(4);               /* for sync() */
-		exit(!!i);
+		if (ENABLE_FEATURE_CLEAN_UP)
+			close(fd);
+		exit(i != 0);
 	}
 }
 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
@@ -2544,7 +2540,6 @@ print_buffer(char *pbuffer)
 	puts("");
 }
 
-
 static void
 print_raw(void)
 {
@@ -2728,7 +2723,8 @@ try(const char *device, int user_specified)
 	if (!user_specified)
 		if (is_ide_cdrom_or_tape(device))
 			return;
-	if ((fd = open(disk_device, type_open)) >= 0) {
+	fd = open(disk_device, type_open);
+	if (fd >= 0) {
 		gb = get_boot(try_only);
 		if (gb > 0) {   /* I/O error */
 			close(fd);
@@ -2861,7 +2857,7 @@ int fdisk_main(int argc, char **argv)
 		type_open = O_RDONLY;
 		if (argc > 0) {
 			int k;
-#if __GNUC__
+#if defined(__GNUC__)
 			/* avoid gcc warning:
 			   variable `k' might be clobbered by `longjmp' */
 			(void)&k;