Adding upstream version 3.6.upstream/3.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1329 insertions, 0 deletions

diff --git a/libparted/labels/vtoc.c b/libparted/labels/vtoc.c
new file mode 100644
index 0000000..d467164
--- /dev/null
+++ b/libparted/labels/vtoc.c
@@ -0,0 +1,1329 @@
+#include <config.h>
+#include <parted/vtoc.h>
+
+#ifdef DEBUG_DASD
+#define PDEBUG fprintf(stderr, "%s:%d:%s\n", \
+                       __FILE__,                              \
+                       __LINE__,                              \
+                       __PRETTY_FUNCTION__);
+#else
+#define PDEBUG
+#endif
+
+#include <parted/parted.h>
+
+#include <libintl.h>
+#if ENABLE_NLS
+#  define _(String) dgettext (PACKAGE, String)
+#else
+#  define _(String) (String)
+#endif /* ENABLE_NLS */
+
+static const unsigned char EBCtoASC[256] =
+{
+/* 0x00  NUL   SOH   STX   ETX  *SEL    HT  *RNL   DEL */
+	0x00, 0x01, 0x02, 0x03, 0x07, 0x09, 0x07, 0x7F,
+/* 0x08  -GE  -SPS  -RPT    VT    FF    CR    SO    SI */
+	0x07, 0x07, 0x07, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+/* 0x10  DLE   DC1   DC2   DC3  -RES   -NL    BS  -POC
+                                -ENP  ->LF             */
+	0x10, 0x11, 0x12, 0x13, 0x07, 0x0A, 0x08, 0x07,
+/* 0x18  CAN    EM  -UBS  -CU1  -IFS  -IGS  -IRS  -ITB
+                                                  -IUS */
+	0x18, 0x19, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+/* 0x20  -DS  -SOS    FS  -WUS  -BYP    LF   ETB   ESC
+                                -INP                   */
+	0x07, 0x07, 0x1C, 0x07, 0x07, 0x0A, 0x17, 0x1B,
+/* 0x28  -SA  -SFE   -SM  -CSP  -MFA   ENQ   ACK   BEL
+                     -SW                               */
+	0x07, 0x07, 0x07, 0x07, 0x07, 0x05, 0x06, 0x07,
+/* 0x30 ----  ----   SYN   -IR   -PP  -TRN  -NBS   EOT */
+	0x07, 0x07, 0x16, 0x07, 0x07, 0x07, 0x07, 0x04,
+/* 0x38 -SBS   -IT  -RFF  -CU3   DC4   NAK  ----   SUB */
+	0x07, 0x07, 0x07, 0x07, 0x14, 0x15, 0x07, 0x1A,
+/* 0x40   SP   RSP           ä              ----       */
+	0x20, 0xFF, 0x83, 0x84, 0x85, 0xA0, 0x07, 0x86,
+/* 0x48                      .     <     (     +     | */
+	0x87, 0xA4, 0x9B, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
+/* 0x50    &                                      ---- */
+	0x26, 0x82, 0x88, 0x89, 0x8A, 0xA1, 0x8C, 0x07,
+/* 0x58          ß     !     $     *     )     ;       */
+	0x8D, 0xE1, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAA,
+/* 0x60    -     /  ----     Ä  ----  ----  ----       */
+	0x2D, 0x2F, 0x07, 0x8E, 0x07, 0x07, 0x07, 0x8F,
+/* 0x68             ----     ,     %     _     >     ? */
+	0x80, 0xA5, 0x07, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
+/* 0x70  ---        ----  ----  ----  ----  ----  ---- */
+	0x07, 0x90, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+/* 0x78    *     `     :     #     @     '     =     " */
+	0x70, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
+/* 0x80    *     a     b     c     d     e     f     g */
+	0x07, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+/* 0x88    h     i              ----  ----  ----       */
+	0x68, 0x69, 0xAE, 0xAF, 0x07, 0x07, 0x07, 0xF1,
+/* 0x90    °     j     k     l     m     n     o     p */
+	0xF8, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
+/* 0x98    q     r                    ----        ---- */
+	0x71, 0x72, 0xA6, 0xA7, 0x91, 0x07, 0x92, 0x07,
+/* 0xA0          ~     s     t     u     v     w     x */
+	0xE6, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+/* 0xA8    y     z              ----  ----  ----  ---- */
+	0x79, 0x7A, 0xAD, 0xAB, 0x07, 0x07, 0x07, 0x07,
+/* 0xB0    ^                    ----     §  ----       */
+	0x5E, 0x9C, 0x9D, 0xFA, 0x07, 0x07, 0x07, 0xAC,
+/* 0xB8       ----     [     ]  ----  ----  ----  ---- */
+	0xAB, 0x07, 0x5B, 0x5D, 0x07, 0x07, 0x07, 0x07,
+/* 0xC0    {     A     B     C     D     E     F     G */
+	0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+/* 0xC8    H     I  ----           ö              ---- */
+	0x48, 0x49, 0x07, 0x93, 0x94, 0x95, 0xA2, 0x07,
+/* 0xD0    }     J     K     L     M     N     O     P */
+	0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
+/* 0xD8    Q     R  ----           ü                   */
+	0x51, 0x52, 0x07, 0x96, 0x81, 0x97, 0xA3, 0x98,
+/* 0xE0    \           S     T     U     V     W     X */
+	0x5C, 0xF6, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
+/* 0xE8    Y     Z        ----     Ö  ----  ----  ---- */
+	0x59, 0x5A, 0xFD, 0x07, 0x99, 0x07, 0x07, 0x07,
+/* 0xF0    0     1     2     3     4     5     6     7 */
+	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+/* 0xF8    8     9  ----  ----     Ü  ----  ----  ---- */
+	0x38, 0x39, 0x07, 0x07, 0x9A, 0x07, 0x07, 0x07
+};
+
+static const unsigned char ASCtoEBC[256] =
+{
+    /*00  NL    SH    SX    EX    ET    NQ    AK    BL */
+	0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F,
+    /*08  BS    HT    LF    VT    FF    CR    SO    SI */
+	0x16, 0x05, 0x15, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+    /*10  DL    D1    D2    D3    D4    NK    SN    EB */
+	0x10, 0x11, 0x12, 0x13, 0x3C, 0x15, 0x32, 0x26,
+    /*18  CN    EM    SB    EC    FS    GS    RS    US */
+	0x18, 0x19, 0x3F, 0x27, 0x1C, 0x1D, 0x1E, 0x1F,
+    /*20  SP     !     "     #     $     %     &     ' */
+	0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D,
+    /*28   (     )     *     +     ,     -    .      / */
+	0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61,
+    /*30   0     1     2     3     4     5     6     7 */
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+    /*38   8     9     :     ;     <     =     >     ? */
+	0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F,
+    /*40   @     A     B     C     D     E     F     G */
+	0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+    /*48   H     I     J     K     L     M     N     O */
+	0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
+    /*50   P     Q     R     S     T     U     V     W */
+	0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
+    /*58   X     Y     Z     [     \     ]     ^     _ */
+	0xE7, 0xE8, 0xE9, 0xAD, 0xE0, 0xBD, 0x5F, 0x6D,
+    /*60   `     a     b     c     d     e     f     g */
+	0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+    /*68   h     i     j     k     l     m     n     o */
+	0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
+    /*70   p     q     r     s     t     u     v     w */
+	0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
+    /*78   x     y     z     {     |     }     ~    DL */
+	0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0xFF
+};
+
+enum failure {
+	unable_to_open,
+	unable_to_seek,
+	unable_to_write,
+	unable_to_read
+};
+
+static char buffer[93];
+
+static void
+vtoc_error (enum failure why, char const *s1, char const *s2)
+{
+	PDEBUG
+	char error[8192];
+
+	switch (why) {
+		case unable_to_open:
+			sprintf(error, "VTOC: %s -- %s\n%s\n",
+				_("opening of device failed"), s1, s2);
+			break;
+		case unable_to_seek:
+			sprintf(error, "VTOC: %s -- %s\n%s\n",
+				_("seeking on device failed"), s1, s2);
+			break;
+		case unable_to_write:
+			sprintf(error, "VTOC: %s -- %s\n%s\n",
+				_("writing to device failed"), s1, s2);
+			break;
+		case unable_to_read:
+			sprintf(error, "VTOC: %s -- %s\n%s\n",
+				_("reading from device failed"), s1, s2);
+			break;
+		default:
+			sprintf(error, "VTOC: %s\n", _("Fatal error"));
+	}
+
+	ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL, error);
+}
+
+char *
+vtoc_ebcdic_enc (char const *source, char *target, int l)
+{
+	PDEBUG
+	int i;
+
+	for (i = 0; i < l; i++)
+		target[i]=ASCtoEBC[(unsigned char)(source[i])];
+
+	return target;
+}
+
+char *
+vtoc_ebcdic_dec (char const *source, char *target, int l)
+{
+	PDEBUG
+	int i;
+
+	for (i = 0; i < l; i++)
+		target[i]=EBCtoASC[(unsigned char)(source[i])];
+
+	return target;
+}
+
+void
+vtoc_set_extent (extent_t *ext, u_int8_t typeind, u_int8_t seqno,
+                 cchh_t *lower, cchh_t *upper)
+{
+	PDEBUG
+	ext->typeind = typeind;
+	ext->seqno   = seqno;
+	memcpy(&ext->llimit,lower,sizeof(cchh_t));
+	memcpy(&ext->ulimit,upper,sizeof(cchh_t));
+}
+
+void
+vtoc_set_cchh (cchh_t *addr, u_int32_t cc, u_int16_t hh)
+{
+	PDEBUG
+	addr->cc = (u_int16_t) cc;
+	addr->hh = cc >> 16;
+	addr->hh <<= 4;
+	addr->hh |= hh;
+}
+
+u_int32_t
+vtoc_get_cyl_from_cchh (cchh_t *addr)
+{
+	u_int32_t cyl;
+
+	/*decode cylinder for large volumes */
+	cyl = addr->hh & 0xFFF0;
+	cyl <<= 12;
+	cyl |= addr->cc;
+	return cyl;
+}
+
+u_int16_t
+vtoc_get_head_from_cchh (cchh_t *addr)
+{
+	/* decode heads for large volumes */
+	return addr->hh & 0x000F;
+}
+
+static void
+vtoc_set_ttr (ttr_t *addr, u_int16_t tt, u_int8_t r)
+{
+	PDEBUG
+	addr->tt = tt;
+	addr->r = r;
+}
+
+void
+vtoc_set_cchhb (cchhb_t *addr, u_int32_t cc, u_int16_t hh, u_int8_t b)
+{
+	PDEBUG
+	addr->cc = (u_int16_t) cc;
+	addr->hh = cc >> 16;
+	addr->hh <<= 4;
+	addr->hh |= hh;
+	addr->b  = b;
+}
+
+u_int32_t
+vtoc_get_cyl_from_cchhb(cchhb_t *addr)
+{
+	u_int32_t cyl;
+
+	/* decode cylinder for large volumes */
+	cyl = addr->hh & 0xFFF0;
+	cyl <<= 12;
+	cyl |= addr->cc;
+	return cyl;
+}
+
+u_int16_t
+vtoc_get_head_from_cchhb(cchhb_t *addr)
+{
+	/* decode heads for large volumes */
+	return addr->hh & 0x000F;
+}
+
+/*
+ * some functions to convert cyl-cyl-head-head addresses to
+ * block or track numbers
+ * Note: Record zero is special, so first block on a track is
+ * in record 1!
+ */
+u_int64_t
+cchhb2blk (cchhb_t *p, struct fdasd_hd_geometry *geo)
+{
+	return (u_int64_t) vtoc_get_cyl_from_cchhb(p) *
+		geo->heads * geo->sectors +
+		vtoc_get_head_from_cchhb(p) * geo->sectors +
+		p->b;
+}
+
+u_int64_t
+cchh2blk (cchh_t *p, struct fdasd_hd_geometry *geo)
+{
+	return (u_int64_t) vtoc_get_cyl_from_cchh(p) *
+		geo->heads * geo->sectors +
+		vtoc_get_head_from_cchh(p) * geo->sectors;
+}
+
+u_int32_t
+cchh2trk (cchh_t *p, struct fdasd_hd_geometry *geo)
+{
+	return  vtoc_get_cyl_from_cchh(p) * geo->heads +
+		vtoc_get_head_from_cchh(p);
+}
+
+void
+vtoc_set_date (labeldate_t * d, u_int8_t year, u_int16_t day)
+{
+	PDEBUG
+	d->year = year;
+	d->day = day;
+}
+
+/*
+ * initializes the volume label with EBCDIC spaces
+ */
+void
+vtoc_volume_label_init (volume_label_t *vlabel)
+{
+	PDEBUG
+	sprintf(buffer, "%92s", " ");
+	vtoc_ebcdic_enc(buffer, buffer, sizeof *vlabel);
+	memcpy(vlabel, buffer, sizeof *vlabel);
+}
+
+/*
+ * reads the volume label from dasd
+ */
+int
+vtoc_read_volume_label (int f, unsigned long vlabel_start,
+                        volume_label_t *vlabel)
+{
+
+	char str[5];
+	unsigned long block_zero;
+	typedef struct bogus_label bogus_label_t;
+	typedef union vollabel vollabel_t;
+
+	union __attribute__((packed)) vollabel {
+		/* cdl and ldl have the same data struct */
+		volume_label_t cdl;
+		cms_volume_label_t cms;
+	};
+
+	struct  __attribute__((packed)) bogus_label {
+	   char overhead[512];
+	   vollabel_t actual_label;
+	};
+
+	bogus_label_t mybogus;
+	bogus_label_t *bogus_ptr = &mybogus;
+	vollabel_t *union_ptr = &bogus_ptr->actual_label;
+	volume_label_t *cdl_ptr = &union_ptr->cdl;
+
+	PDEBUG
+	int rc;
+
+	if (lseek(f, vlabel_start, SEEK_SET) == -1) {
+		vtoc_error(unable_to_seek, "vtoc_read_volume_label",
+			   _("Could not read volume label."));
+		return 1;
+	}
+
+	rc = read(f, vlabel, sizeof(volume_label_t));
+	if (rc != sizeof(volume_label_t)) {
+		vtoc_error(unable_to_read, "vtoc_read_volume_label",
+			   _("Could not read volume label."));
+		return 1;
+	}
+
+	if (strncmp(vlabel->volkey, vtoc_ebcdic_enc("VOL1", str, 4), 4) == 0
+	 || strncmp(vlabel->volkey, vtoc_ebcdic_enc("LNX1", str, 4), 4) == 0
+         || strncmp(vlabel->volkey, vtoc_ebcdic_enc("CMS1", str, 4), 4) == 0)
+	return 0;
+
+	/*
+	   If we didn't find a valid volume label, there is a special case
+           we must try before we give up.  For a CMS-formatted disk on FBA
+	   DASD using the DIAG driver and a block size greater than 512, we
+	   must read the block at offset 0, then look for a label within
+	   that block at offset 512.
+	*/
+
+	block_zero = 0;
+
+	if (lseek(f, block_zero, SEEK_SET) == -1) {
+		vtoc_error(unable_to_seek, "vtoc_read_volume_label",
+			   _("Could not read volume label."));
+		return 1;
+	}
+
+	rc = read(f, bogus_ptr, sizeof(bogus_label_t));
+	if (rc != sizeof(bogus_label_t)) {
+		vtoc_error(unable_to_read, "vtoc_read_volume_label",
+			   _("Could not read volume label."));
+		return 1;
+	}
+
+	memcpy(vlabel, cdl_ptr, sizeof *vlabel);
+	return 0;
+}
+
+/*
+ * writes the volume label to dasd
+ */
+int
+vtoc_write_volume_label (int f, unsigned long vlabel_start,
+                         volume_label_t const *vlabel)
+{
+	PDEBUG
+	int rc;
+
+	if (lseek(f, vlabel_start, SEEK_SET) == -1)
+		vtoc_error(unable_to_seek, "vtoc_write_volume_label",
+			   _("Could not write volume label."));
+
+	rc = write(f, vlabel, sizeof(volume_label_t));
+	if (rc != sizeof(volume_label_t))
+		vtoc_error(unable_to_write, "vtoc_write_volume_label",
+			   _("Could not write volume label."));
+
+	return 0;
+}
+
+/*
+ * takes a string as input, converts it to uppercase, translates
+ * it to EBCDIC and fills it up with spaces before it copies it
+ * as volume serial to the volume label
+ */
+void
+vtoc_volume_label_set_volser (volume_label_t *vlabel, char const *volser)
+{
+	PDEBUG
+	int j, i = strlen(volser);
+	char s[VOLSER_LENGTH + 1];
+
+	strcpy(s, "      ");
+	vtoc_ebcdic_enc(s, s, VOLSER_LENGTH);
+	strncpy(vlabel->volid, s, VOLSER_LENGTH);
+
+	if (i > VOLSER_LENGTH)
+		i = VOLSER_LENGTH;
+
+	strncpy(s, volser, i);
+	for (j=0; j<i; j++)
+		s[j] = toupper(s[j]);
+
+	s[VOLSER_LENGTH] = 0x00;
+	vtoc_ebcdic_enc(s, s, i);
+	strncpy(vlabel->volid, s, i);
+
+	return;
+}
+
+/*
+ * returns the volume serial number right after it is translated
+ * to ASCII
+ */
+char *
+vtoc_volume_label_get_volser (volume_label_t *vlabel, char *volser)
+{
+	PDEBUG
+	vtoc_ebcdic_dec(vlabel->volid, volser, VOLSER_LENGTH);
+
+	return volser;
+}
+
+/*
+ * sets the volume label key right after
+ * it has been translated to EBCDIC
+ */
+void
+vtoc_volume_label_set_key (volume_label_t *vlabel, char const *key)
+{
+	PDEBUG
+	char s[4];
+
+	vtoc_ebcdic_enc(key, s, 4);
+	strncpy(vlabel->volkey, s, 4);
+
+	return;
+}
+
+/*
+ * sets the volume label identifier right
+ * after it has been translated to EBCDIC
+ */
+void
+vtoc_volume_label_set_label (volume_label_t *vlabel, char const *lbl)
+{
+	PDEBUG
+	char s[4];
+
+	vtoc_ebcdic_enc(lbl, s, 4);
+	strncpy(vlabel->vollbl, s, 4);
+
+	return;
+}
+
+/*
+ * returns the volume label key = the label identifier
+ * right after it has been translated to ASCII
+ */
+char *
+vtoc_volume_label_get_label (volume_label_t *vlabel, char *lbl)
+{
+	PDEBUG
+	vtoc_ebcdic_dec(vlabel->vollbl, lbl, 4);
+
+	return lbl;
+}
+
+/*
+ * reads either a format4 label or a format1 label
+ * from the specified position
+ */
+void
+vtoc_read_label (int f, unsigned long position, format1_label_t *f1,
+                 format4_label_t *f4, format5_label_t *f5, format7_label_t *f7)
+{
+	PDEBUG
+	int t;
+
+	if (lseek(f, position, SEEK_SET) == -1)
+		vtoc_error(unable_to_seek, "vtoc_read_label",
+			   _("Could not read VTOC labels."));
+
+	if (f1 != NULL) {
+		t = sizeof(format1_label_t);
+		if (read(f, f1, t) != t)
+			vtoc_error(unable_to_read, "vtoc_read_label",
+				   _("Could not read VTOC FMT1 DSCB."));
+	}
+
+	if (f4 != NULL) {
+		t = sizeof(format4_label_t);
+		if (read(f, f4, t) != t)
+			vtoc_error(unable_to_read, "vtoc_read_label",
+				   _("Could not read VTOC FMT4 DSCB."));
+	}
+
+	if (f5 != NULL) {
+		t = sizeof(format5_label_t);
+		if (read(f, f5, t) != t)
+			vtoc_error(unable_to_read, "vtoc_read_label",
+				   _("Could not read VTOC FMT5 DSCB."));
+	}
+
+	if (f7 != NULL) {
+		t = sizeof(format7_label_t);
+		if (read(f, f7, t) != t)
+			vtoc_error(unable_to_read, "vtoc_read_label",
+				   _("Could not read VTOC FMT7 DSCB."));
+	}
+}
+
+/*
+ * writes either a FMT1, FMT4 or FMT5 label
+ * to the specified position
+ */
+void
+vtoc_write_label (int f, unsigned long position,
+		  format1_label_t const *f1,
+                  format4_label_t const *f4,
+		  format5_label_t const *f5,
+		  format7_label_t const *f7,
+		  format9_label_t const *f9)
+{
+	PDEBUG
+	int t;
+
+	if (lseek(f, position, SEEK_SET) == -1)
+		vtoc_error(unable_to_seek, "vtoc_write_label",
+			   _("Could not write VTOC labels."));
+
+	if (f1 != NULL) {
+		t = sizeof(format1_label_t);
+		if (write(f, f1, t) != t)
+			vtoc_error(unable_to_write, "vtoc_write_label",
+				   _("Could not write VTOC FMT1 DSCB."));
+	}
+
+	if (f4 != NULL) {
+		t = sizeof(format4_label_t);
+		if (write(f, f4, t) != t)
+			vtoc_error(unable_to_write, "vtoc_write_label",
+				   _("Could not write VTOC FMT4 DSCB."));
+	}
+
+	if (f5 != NULL) {
+		t = sizeof(format5_label_t);
+		if (write(f, f5, t) != t)
+			vtoc_error(unable_to_write, "vtoc_write_label",
+				   _("Could not write VTOC FMT5 DSCB."));
+	}
+
+	if (f7 != NULL) {
+		t = sizeof(format7_label_t);
+		if (write(f, f7, t) != t)
+			vtoc_error(unable_to_write, "vtoc_write_label",
+				   _("Could not write VTOC FMT7 DSCB."));
+	}
+
+	if (f9 != NULL)
+	{
+		t = sizeof(format9_label_t);
+		if (write(f, f9, t) != t)
+		{
+			close(f);
+			vtoc_error(unable_to_write, "vtoc_write_label",
+				   _("Could not write VTOC FMT9 DSCB."));
+		}
+	}
+}
+
+/*
+ * initializes a format4 label
+ */
+void
+vtoc_init_format4_label (format4_label_t *f4,
+                         unsigned int compat_cylinders,
+                         unsigned int real_cylinders, unsigned int tracks,
+                         unsigned int blocks, unsigned int blksize,
+                         u_int16_t dev_type)
+{
+	PDEBUG
+	int i;
+
+	cchh_t lower = {VTOC_START_CC, VTOC_START_HH};
+	cchh_t upper = {VTOC_START_CC, VTOC_START_HH};
+
+	for (i=0; i<44; i++) f4->DS4KEYCD[i] = 0x04;
+        f4->DS4IDFMT = 0xf4;
+
+	vtoc_set_cchhb(&f4->DS4HPCHR, 0x0000, 0x0000, 0x00);
+	f4->DS4DSREC = blocks - 2;
+	/* free space starts right behind VTOC
+	   vtoc_set_cchh(&f4->DS4HCCHH, VTOC_START_CC, VTOC_START_HH + 1);*/
+	vtoc_set_cchh(&f4->DS4HCCHH, 0x0000, 0x0000);
+	f4->DS4NOATK = 0x0000;
+	f4->DS4VTOCI = 0x00;
+	f4->DS4NOEXT = 0x01;
+	f4->DS4SMSFG = 0x00;
+	f4->DS4DEVAC = 0x00;
+
+	/* -- begin f4->DS4DEVCT -- */
+	f4->DS4DEVCT.DS4DSCYL = compat_cylinders;
+	f4->DS4DEVCT.DS4DSTRK = tracks;
+
+	switch (dev_type) {
+		case DASD_3380_TYPE:
+			f4->DS4DEVCT.DS4DEVTK = DASD_3380_VALUE;
+			break;
+		case DASD_3390_TYPE:
+			f4->DS4DEVCT.DS4DEVTK = DASD_3390_VALUE;
+			break;
+		case DASD_9345_TYPE:
+			f4->DS4DEVCT.DS4DEVTK = DASD_9345_VALUE;
+			break;
+		default:
+			f4->DS4DEVCT.DS4DEVTK = blocks * blksize;
+	}
+
+	f4->DS4DEVCT.DS4DEVI  = 0x00;
+	f4->DS4DEVCT.DS4DEVL  = 0x00;
+	f4->DS4DEVCT.DS4DEVK  = 0x00;
+	f4->DS4DEVCT.DS4DEVFG = 0x30;
+	f4->DS4DEVCT.DS4DEVTL = 0x0000;
+	f4->DS4DEVCT.DS4DEVDT = blocks;
+	f4->DS4DEVCT.DS4DEVDB = 0x00;
+	/* -- end f4->DS4DEVCT -- */
+
+	bzero(f4->DS4AMTIM, sizeof(f4->DS4AMTIM));
+	bzero(f4->DS4AMCAT, sizeof(f4->DS4AMCAT));
+	bzero(f4->DS4R2TIM, sizeof(f4->DS4R2TIM));
+	bzero(f4->res1, sizeof(f4->res1));
+	bzero(f4->DS4F6PTR, sizeof(f4->DS4F6PTR));
+
+	/* -- begin f4lbl->DS4VTOCE -- */
+	vtoc_set_extent(&f4->DS4VTOCE, 0x01, 0x00, &lower, &upper);
+	/* -- end f4lbl->DS4VTOCE -- */
+
+	bzero(f4->res2, sizeof(f4->res2));
+	f4->DS4EFLVL = 0x00;
+	bzero(&f4->DS4EFPTR, sizeof(f4->DS4EFPTR));
+	bzero(&f4->res3, sizeof(f4->res3));
+	f4->DS4DCYL = real_cylinders;
+	bzero(f4->res4, sizeof(f4->res4));
+	f4->DS4DEVF2 = 0x40; /* allow format 8 and 9 labels */
+	bzero(&f4->res5, sizeof(f4->res5));
+}
+
+/*
+ * initializes a format5 label
+ */
+void
+vtoc_init_format5_label (format5_label_t *f5)
+{
+	PDEBUG
+	int i;
+
+	bzero(f5, sizeof(format5_label_t));
+	for (i=0; i<4; i++)
+		f5->DS5KEYID[i] = 0x05;
+	f5->DS5FMTID = 0xf5;
+}
+
+/*
+ * initializes a format7 label
+ */
+void
+vtoc_init_format7_label (format7_label_t *f7)
+{
+	PDEBUG
+	int i;
+
+	bzero(f7, sizeof(format7_label_t));
+	for (i=0; i<4; i++)
+		f7->DS7KEYID[i] = 0x07;
+	f7->DS7FMTID = 0xf7;
+}
+
+/*
+ * helper function that initializes a most parts of a
+ * format1 or format 8 label, all but the field DS1FMTID
+ */
+void
+vtoc_init_format_1_8_label (unsigned int blksize,
+                            extent_t *part_extent, format1_label_t *f1)
+{
+	PDEBUG
+	struct tm * creatime;
+	time_t t;
+	char str[80];
+
+	/* get actual date */
+	t = time(NULL);
+	creatime = gmtime(&t);
+
+	bzero(f1->DS1DSNAM, sizeof(f1->DS1DSNAM));
+	sprintf(str, "PART    .NEW                                ");
+	vtoc_ebcdic_enc(str, str, 44);
+	strncpy(f1->DS1DSNAM, str, 44);
+	strncpy(f1->DS1DSSN, "      ", 6);
+	f1->DS1VOLSQ = 0x0001;
+
+	vtoc_set_date(&f1->DS1CREDT, (u_int8_t) creatime->tm_year,
+				  (u_int16_t) creatime->tm_yday);
+	/* expires never - 99 365 */
+	vtoc_set_date(&f1->DS1EXPDT, 0x63, 0x016D);
+	f1->DS1NOEPV = 0x01;
+	f1->DS1NOBDB = 0x00;
+	f1->DS1FLAG1 = 0x00;
+	vtoc_ebcdic_enc("IBM LINUX    ", str, 13);
+	strncpy(f1->DS1SYSCD, str, 13);
+	vtoc_set_date(&f1->DS1REFD, (u_int8_t) creatime->tm_year,
+				  (u_int16_t) creatime->tm_yday);
+	f1->DS1SMSFG = 0x00;
+	f1->DS1SCXTF = 0x00;
+	f1->DS1SCXTV = 0x0000;
+	f1->DS1DSRG1 = 0x00;
+	f1->DS1DSRG2 = 0x00;
+	f1->DS1RECFM = 0x88;
+	f1->DS1OPTCD = 0x00;
+	f1->DS1BLKL  = blksize;
+	f1->DS1LRECL = blksize;
+	f1->DS1KEYL  = 0x00;
+	f1->DS1RKP   = 0x0000;
+	f1->DS1DSIND = 0x80; /* last volume for this dataset */
+	f1->DS1SCAL1 = 0x80;
+	bzero(&f1->DS1SCAL3, sizeof(f1->DS1SCAL3));
+	vtoc_set_ttr(&f1->DS1LSTAR, 0x0000, 0x00);
+	f1->DS1TRBAL = 0x00;
+	bzero(&f1->res1, sizeof(f1->res1));
+	memcpy(&f1->DS1EXT1, part_extent, sizeof(extent_t));
+	bzero(&f1->DS1EXT2, sizeof(extent_t));
+	bzero(&f1->DS1EXT3, sizeof(extent_t));
+	vtoc_set_cchhb(&f1->DS1PTRDS, 0x0000, 0x0000, 0x00);
+}
+
+void
+vtoc_init_format1_label (unsigned int blksize,
+                         extent_t *part_extent, format1_label_t *f1)
+{
+	vtoc_init_format_1_8_label(blksize, part_extent, f1);
+	f1->DS1FMTID = 0xf1;
+}
+
+void
+vtoc_init_format8_label (unsigned int blksize,
+                         extent_t *part_extent, format1_label_t *f8)
+{
+	vtoc_init_format_1_8_label(blksize, part_extent, f8);
+	f8->DS1FMTID = 0xf8;
+}
+
+void
+vtoc_update_format8_label (cchhb_t *associated_f9, format1_label_t *f8)
+{
+	memcpy(&f8->DS1PTRDS, associated_f9, sizeof(*associated_f9));
+}
+
+void
+vtoc_init_format9_label (format9_label_t *f9)
+{
+	f9->DS9KEYID = 0x09;
+	f9->DS9SUBTY = 0x01;
+	f9->DS9NUMF9 = 1;
+	f9->DS9FMTID = 0xf9;
+}
+
+/*
+ * do some updates to the VTOC format4 label
+ */
+void
+vtoc_update_format4_label (format4_label_t *f4, cchhb_t *highest_f1,
+                           u_int16_t unused_update)
+{
+	PDEBUG
+	/* update highest address of a format 1 label */
+	memcpy(&f4->DS4HPCHR, highest_f1, sizeof(cchhb_t));
+
+	/* update unused DSCB count */
+	f4->DS4DSREC = unused_update;
+}
+
+/*
+ * reorganizes all extents within a FMT5 label
+ */
+static void
+vtoc_reorganize_FMT5_extents (format5_label_t *f5)
+{
+	PDEBUG
+	ds5ext_t *ext, *last, tmp;
+	int i, j;
+
+	for (i=0; i<26; i++) {
+		if (i==0)
+			last = &f5->DS5AVEXT;
+		else if ((i > 0) && (i < 8))
+			last = &f5->DS5EXTAV[i-1];
+		else
+			last = &f5->DS5MAVET[i-8];
+
+		for (j=i; j<26; j++) {
+			if (j==0)
+				ext = &f5->DS5AVEXT;
+			else if ((j > 0) && (j < 8))
+				ext = &f5->DS5EXTAV[j-1];
+			else
+				ext = &f5->DS5MAVET[j-8];
+
+			if (((ext->t > 0) && (last->t == 0)) ||
+			    ((ext->t > 0) && (ext->t < last->t)))
+			{
+				tmp.t  = last->t;
+				tmp.fc = last->fc;
+				tmp.ft = last->ft;
+				last->t  = ext->t;
+				last->fc = ext->fc;
+				last->ft = ext->ft;
+				ext->t  = tmp.t;
+				ext->fc = tmp.fc;
+				ext->ft = tmp.ft;
+			}
+		}
+	}
+}
+
+/*
+ * add a free space extent description to the VTOC FMT5 DSCB
+ */
+void
+vtoc_update_format5_label_add (format5_label_t *f5, int verbose,
+                               int trk, u_int16_t a, u_int16_t b, u_int8_t c)
+{
+	PDEBUG
+	ds5ext_t *ext = NULL, *tmp = NULL;
+	int i;
+
+	for (i=0; i<26; i++) {
+		if (i==0)
+			ext = &f5->DS5AVEXT;
+		else if ((i > 0) && (i < 8))
+			ext = &f5->DS5EXTAV[i-1];
+		else
+			ext = &f5->DS5MAVET[i-8];
+
+		if (((a < ext->t) && (a + b*trk + c > ext->t)) ||
+		    ((a > ext->t) && (ext->t + ext->fc*trk + ext->ft > a)))
+		{
+			puts ("BUG: overlapping free space extents "
+			      "in FMT5 DSCB!\nexiting...");
+			exit(EXIT_FAILURE);
+		}
+
+		if ((ext->t + ext->fc + ext->ft) == 0x0000) {
+			ext->t  = a;
+			ext->fc = b;
+			ext->ft = c;
+			tmp = ext;
+			if (verbose)
+                                puts ("FMT5 add extent: add new extent");
+			break;
+		}
+	}
+
+	if (tmp == NULL) {
+		/* BUG: no free extent found */
+		puts ("BUG: no free FMT5 DSCB extent found!\nexiting...");
+		exit(EXIT_FAILURE);
+	}
+
+	for (i=0; i<26; i++) {
+		if (i==0)
+			ext = &f5->DS5AVEXT;
+		else if ((i > 0) && (i < 8))
+			ext = &f5->DS5EXTAV[i-1];
+		else
+			ext = &f5->DS5MAVET[i-8];
+
+		if ((ext->t + ext->fc + ext->ft) == 0x0000)
+			continue;
+
+		if ((ext->t + ext->fc*trk + ext->ft) == tmp->t) {
+			/* this extent precedes the new one */
+			ext->fc += (tmp->fc + (tmp->ft + ext->ft)/trk);
+			ext->ft = (tmp->ft + ext->ft) % trk;
+			bzero(tmp, sizeof(ds5ext_t));
+			tmp = ext;
+
+			if (verbose)
+				puts ("FMT5 add extent: "
+                                      "merge with predecessor");
+
+			i = -1;
+			continue;
+		}
+
+		if ((tmp->t + tmp->fc*trk + tmp->ft) == ext->t) {
+			/* this extent succeeds the new one */
+			ext->t = tmp->t;
+			ext->fc += (tmp->fc + (tmp->ft + ext->ft)/trk);
+			ext->ft = (tmp->ft + ext->ft) % trk;
+			bzero(tmp, sizeof(ds5ext_t));
+			tmp = ext;
+
+			if (verbose)
+				puts ("FMT5 add extent: "
+				      "merge with successor");
+
+			i = -1;
+			continue;
+		}
+	}
+}
+
+/*
+ * remove a free space extent description from the VTOC FMT5 DSCB
+ */
+void
+vtoc_update_format5_label_del (format5_label_t *f5, int verbose,
+                               int trk, u_int16_t a, u_int16_t b, u_int8_t c)
+{
+	PDEBUG
+	ds5ext_t *ext;
+	int i, counter=0;
+
+	for (i=0; i<26; i++) {
+		if (i==0)
+			ext = &f5->DS5AVEXT;
+		else if ((i > 0) && (i < 8))
+			ext = &f5->DS5EXTAV[i-1];
+		else
+			ext = &f5->DS5MAVET[i-8];
+
+		if ((a == ext->t) && (b == ext->fc) && (c == ext->ft)) {
+			/* fills up whole free space gap */
+			bzero(ext, sizeof(ds5ext_t));
+
+			if (verbose)
+				puts ("FMT5 del extent: fills whole gap");
+
+			counter++;
+			break;
+		}
+
+		if ((a == ext->t) && ((b < ext->fc) || (c < ext->ft))) {
+			/* left-bounded in free space gap */
+			ext->t = ext->t + b*trk + c;
+
+			if (c > ext->ft) {
+				ext->fc -= (b + 1);
+				ext->ft -= (c - trk);
+			} else {
+				ext->fc -= b;
+				ext->ft -= c;
+			}
+
+			if (verbose)
+				puts ("FMT5 del extent: left bounded");
+
+			counter++;
+			break;
+		}
+
+		if ((ext->t < a)
+		    && ((ext->t + ext->fc*trk + ext->ft) == (a + b*trk + c)))
+		{
+			/* right-bounded in free space gap */
+			if (c > ext->ft) {
+				ext->fc -= (b + 1);
+				ext->ft -= (c - trk);
+			} else {
+				ext->fc -= b;
+				ext->ft -= c;
+			}
+
+			if (verbose)
+				puts ("FMT5 del extent: right bounded");
+
+			counter++;
+			break;
+		}
+
+		if ((a > ext->t)
+			&& ((ext->t + ext->fc*trk + ext->ft) > (a + b*trk + c)))
+		{
+			/* partition devides free space into 2 pieces */
+			u_int16_t x = a + b*trk + c;
+			u_int16_t w,y;
+			u_int8_t z;
+
+			w = (ext->t + ext->fc*trk + ext->ft) - (a + b*trk + c);
+			y = w / trk;
+			z = w % trk;
+
+			ext->fc = (a - ext->t) / trk;
+			ext->ft = (a - ext->t) % trk;
+
+			vtoc_update_format5_label_add(f5, verbose,
+						      trk, x, y, z);
+
+			if (verbose)
+				puts ("FMT5 del extent: 2 pieces");
+
+			counter++;
+			break;
+		}
+
+		if ((a < ext->t) && (a + b*trk + c > ext->t)
+		    && (a + b*trk + c < ext->t + ext->fc*trk + ext->ft))
+		{
+			puts ("BUG: corresponding free space extent "
+			      "doesn't match free space currently shown "
+			      "in FMT5 DSCB!\nexiting...");
+			exit(EXIT_FAILURE);
+		}
+
+		if ((a > ext->t) && (a < ext->t + ext->fc*trk + ext->ft)
+		    && (a + b*trk + c > ext->t + ext->fc*trk + ext->ft))
+		{
+			puts ("BUG: specified free space extent for "
+			      "deleting doesn't match free space "
+			      "currently shown in FMT5 DSCB!\n"
+			      "exiting...");
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	if (counter > 0)
+		return;
+
+	puts ("BUG: specified free space extent for "
+	      "deleting not found in FMT5 DSCB!\n"
+	      "exiting...");
+	exit(EXIT_FAILURE);
+}
+
+/*
+ * reorganizes all extents within a FMT7 label
+ */
+static void
+vtoc_reorganize_FMT7_extents (format7_label_t *f7)
+{
+	PDEBUG
+	ds7ext_t *ext, *last, tmp;
+	int i, j;
+
+	for (i=0; i<16; i++) {
+		if (i<5)
+			last = &f7->DS7EXTNT[i];
+		else
+			last = &f7->DS7ADEXT[i-5];
+
+		for (j=i; j<16; j++) {
+			if (j<5)
+				ext = &f7->DS7EXTNT[j];
+			else
+				ext = &f7->DS7ADEXT[j-5];
+
+			if (((ext->a > 0) && (last->a == 0))
+			    || ((ext->a > 0) && (ext->a < last->a)))
+			{
+				tmp.a = last->a;
+				tmp.b = last->b;
+				last->a = ext->a;
+				last->b = ext->b;
+				ext->a = tmp.a;
+				ext->b = tmp.b;
+			}
+		}
+	}
+}
+
+/*
+ * add a free space extent description to the VTOC FMT7 DSCB
+ */
+void
+vtoc_update_format7_label_add (format7_label_t *f7, int verbose,
+                               u_int32_t a, u_int32_t b)
+{
+	PDEBUG
+	ds7ext_t *ext = NULL, *tmp = NULL;
+	int i;
+
+	for (i=0; i<16; i++) {
+		if (i<5)
+			ext = &f7->DS7EXTNT[i];
+		else
+			ext = &f7->DS7ADEXT[i-5];
+
+		if (((a < ext->a) && (b > ext->a) && (b < ext->b))
+		    || ((a > ext->a) && (a < ext->b) && (b > ext->b)))
+		{
+			puts ("BUG: overlapping free space extents "
+			      "in FMT7 DSCB!\nexiting...");
+			exit(EXIT_FAILURE);
+		}
+
+		if ((ext->a + ext->b) == 0x00000000) {
+			ext->a = a;
+			ext->b = b;
+			tmp = ext;
+
+			if (verbose)
+				puts ("FMT7 add extent: add new extent");
+
+			break;
+		}
+	}
+
+	if (tmp == NULL) {
+		/* BUG: no free extent found */
+		puts ("BUG: no free FMT7 DSCB extent found!\nexiting...");
+		exit(EXIT_FAILURE);
+	}
+
+	for (i=0; i<16; i++) {
+		if (i<5)
+			ext = &f7->DS7EXTNT[i];
+		else
+			ext = &f7->DS7ADEXT[i-5];
+
+		if ((ext->a + ext->b) == 0x00000000)
+			continue;
+
+		if (ext->b == tmp->a) {
+			/* this extent precedes the new one */
+			ext->b = tmp->b;
+			bzero(tmp, sizeof(ds7ext_t));
+			tmp = ext;
+
+			if (verbose)
+                                puts ("FMT7 add extent: "
+                                      "merge with predecessor");
+
+			i = -1;
+			continue;
+		}
+
+		if (ext->a == tmp->b) {
+			/* this extent succeeds the new one */
+			ext->a = tmp->a;
+			bzero(tmp, sizeof(ds7ext_t));
+			tmp = ext;
+
+			if (verbose)
+				puts ("FMT7 add extent: merge with successor");
+
+			i = -1;
+			continue;
+		}
+	}
+}
+
+/*
+ * remove a free space extent description from the VTOC FMT7 DSCB
+ */
+void
+vtoc_update_format7_label_del (format7_label_t *f7, int verbose,
+                               u_int32_t a, u_int32_t b)
+{
+	PDEBUG
+	ds7ext_t *ext;
+	int i, counter=0;
+
+	for (i=0; i<16; i++) {
+		if (i<5)
+			ext = &f7->DS7EXTNT[i];
+		else
+			ext = &f7->DS7ADEXT[i-5];
+
+		if ((a == ext->a) && (b == ext->b)) {
+			/* fills up whole free space gap */
+			bzero(ext, sizeof(ds7ext_t));
+
+			if (verbose)
+				puts ("FMT7 del extent: fills whole gap");
+
+			counter++;
+			break;
+		}
+
+		if ((a == ext->a) && (b < ext->b)) {
+			/* left-bounded in free space gap */
+			ext->a = b;
+
+			if (verbose)
+				puts ("FMT7 add extent: left-bounded");
+
+			counter++;
+			break;
+		}
+
+		if ((a > ext->a) && (b == ext->b)) {
+			/* right-bounded in free space gap */
+			ext->b = a;
+
+			if (verbose)
+				puts ("FMT7 add extent: right-bounded");
+
+			counter++;
+			break;
+		}
+
+		if ((a > ext->a) && (b < ext->b)) {
+			/* partition devides free space into 2 pieces */
+			vtoc_update_format7_label_add(f7, verbose, b, ext->b);
+			ext->b = a;
+
+			if (verbose)
+				puts ("FMT7 add extent: 2 pieces");
+
+			counter++;
+			break;
+		}
+
+		if (((a < ext->a) && (b > ext->a)) || ((a < ext->b) && (b > ext->b))) {
+                        puts ("BUG: specified free space extent for deleting "
+                              "doesn't match free space currently shown in "
+                              "FMT7 DSCB!\nexiting...");
+			printf ("%d %d %d %d\n", a, b, ext->a, ext->b);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	if (counter > 0)
+		return;
+
+	puts ("BUG: specified free space extent for "
+	      "deleting not found in FMT7 DSCB!\n"
+	      "exiting...");
+	exit(EXIT_FAILURE);
+}
+
+void
+vtoc_set_freespace(format4_label_t *f4, format5_label_t *f5,
+                   format7_label_t *f7, char ch, int verbose,
+                   u_int32_t start, u_int32_t stop, u_int32_t cyl,
+                   u_int32_t trk)
+{
+	PDEBUG
+	if ((cyl * trk) > BIG_DISK_SIZE) {
+		if (ch == '+')
+			vtoc_update_format7_label_add(f7, verbose, start,
+						      /* ds7ext RTA + 1 */
+						      stop + 1);
+		else if (ch == '-')
+			vtoc_update_format7_label_del(f7, verbose, start,
+						      /* ds7ext RTA + 1 */
+						      stop + 1);
+		else
+			puts ("BUG: syntax error in vtoc_set_freespace call");
+
+		vtoc_reorganize_FMT7_extents (f7);
+
+		f4->DS4VTOCI = 0xa0;
+		f4->DS4EFLVL = 0x07;
+		vtoc_set_cchhb(&f4->DS4EFPTR, 0x0000, 0x0001, 0x03);
+	} else {
+		u_int16_t x,y;
+		u_int8_t z;
+
+		x = (u_int16_t) start;
+		y = (u_int16_t) ((stop - start + 1) / trk);
+		z =  (u_int8_t) ((stop - start + 1) % trk);
+
+		if (ch == '+')
+			vtoc_update_format5_label_add(f5, verbose, trk, x, y, z);
+		else if (ch == '-')
+			vtoc_update_format5_label_del(f5, verbose, trk, x, y, z);
+		else
+			puts ("BUG: syntax error in vtoc_set_freespace call");
+
+		vtoc_reorganize_FMT5_extents (f5);
+	}
+}