freem/src/global_bltin.c - diff

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Diff for /freem/src/global_bltin.c between versions 1.10 and 1.17

version 1.10, 2025/04/08 20:00:56	version 1.17, 2025/04/11 14:21:03
Line 24	Line 24
* along with FreeM. If not, see <https://www.gnu.org/licenses/>.	* along with FreeM. If not, see <https://www.gnu.org/licenses/>.
*	*
* $Log$	* $Log$
	* Revision 1.17 2025/04/11 14:21:03 snw
	* Make all but one of the read/write calls in global_bltin use gbl_read_block or gbl_write_block
	*
	* Revision 1.16 2025/04/11 00:52:40 snw
	* Replace all lseek/read calls in global handler to use gbl_read_block function
	*
	* Revision 1.15 2025/04/10 01:24:38 snw
	* Remove C++ style comments
	*
	* Revision 1.14 2025/04/09 19:52:02 snw
	* Eliminate as many warnings as possible while building with -Wall
	*
	* Revision 1.13 2025/04/09 14:34:30 snw
	* Further work on global_bltin.c refactor
	*
	* Revision 1.12 2025/04/09 00:43:07 snw
	* Exit with fatal error if a header mismatch found
	*
	* Revision 1.11 2025/04/08 21:41:13 snw
	* Make insert, update, and splitp global handler functions take a ptr to a global_handle instead of a file descriptor
	*
* Revision 1.10 2025/04/08 20:00:56 snw	* Revision 1.10 2025/04/08 20:00:56 snw
* Global handler now uses a header file and maintains the last journaling transaction ID	* Global handler now uses a header file and maintains the last journaling transaction ID
*	*
Line 63	Line 84
#include "global_bltin.h"	#include "global_bltin.h"

global_handle *global_handles_head;	global_handle *global_handles_head;
	unsigned long gbl_cache_misses = 0;
	unsigned long gbl_cache_hits = 0;

static void b_free (short filedes, unsigned long blknbr);	static void b_free (global_handle *g, unsigned long blknbr);
static void splitp (short filedes, char block, long addr, long offs, unsigned long blknbr);	static void splitp (global_handle g, char block, long addr, long offs, unsigned long *blknbr);
static void update (short filedes, char *ins_key, long keyl);	static void update (global_handle g, char ins_key, long keyl);
static void insert (int filedes, char *ins_key, long key_len, unsigned long blknbr);	static void insert (global_handle g, char ins_key, long key_len, unsigned long blknbr);
static void scanpblk (char block, long adr, long *fnd);	static void scanpblk (char block, long adr, long *fnd);
static void scandblk (char block, long adr, long *fnd);	static void scandblk (char block, long adr, long *fnd);
static void getnewblk (int filedes, unsigned long *blknbr);	static void getnewblk (global_handle g, unsigned long blknbr);
static short int g_collate (char *t);	static short int g_collate (char *t);
//static short int g_numeric (char *str);
short g_numeric (char *str);	short g_numeric (char *str);
void close_all_globals(void);	void close_all_globals(void);
static void panic (void);	static void panic (void);
Line 123 static void panic (void);	Line 145 static void panic (void);
inline long gbl_path(char key, char buf)	inline long gbl_path(char key, char buf)
{	{
long savj;	long savj;
long savch; /* saved j and ch for multiple pathes */

register long int i;	register long int i;
register long int j;	register long int j;
register long int k;	register long int k;
register long int ch;	register long int ch;
long pathscan; /* flag for repeated scan of pathlist setting an undef global */

/* construct full UNIX filename */	/* construct full UNIX filename */
savj = 0;	savj = 0;
savch = ch = EOL;
pathscan = TRUE;
nextpath:
k = 0;	k = 0;
j = savj;	j = savj;

Line 159 nextpath:	Line 176 nextpath:
}	}

}	}

if (savj == 0 && ch == EOL) pathscan = FALSE; /* one path only: inhibit search */

if (k > 0) {	if (k > 0) {

Line 173 nextpath:	Line 188 nextpath:

}	}

savch = ch;
savj = j;	savj = j;
i = 0;	i = 0;
j = 0;	j = 0;
Line 206 nextpath:	Line 220 nextpath:
return i;	return i;
} /* gbl_path() */	} /* gbl_path() */

	void gbl_cache_hit(global_handle *g)
	{
	g->cache_hits++;
	gbl_cache_hits++;
	} /* gbl_cache_hit() */

	void gbl_cache_miss(global_handle *g)
	{
	g->fast_path = 0;
	g->cache_misses++;
	gbl_cache_misses++;
	} /* gbl_cache_miss() */

int gbl_lock(global_handle *g, int type)	int gbl_lock(global_handle *g, int type)
{	{
if (g->locked == TRUE \|\| lonelyflag == TRUE) {	if (g->locked == TRUE \|\| lonelyflag == TRUE) {
Line 214 int gbl_lock(global_handle *g, int type)	Line 241 int gbl_lock(global_handle *g, int type)

locking (g->fd, type, 0L);	locking (g->fd, type, 0L);
g->locked = TRUE;	g->locked = TRUE;

	return TRUE;
} /* gbl_lock() */	} /* gbl_lock() */

int gbl_unlock(global_handle *g)	int gbl_unlock(global_handle *g)
Line 224 int gbl_unlock(global_handle *g)	Line 253 int gbl_unlock(global_handle *g)

locking (g->fd, 0, 0L);	locking (g->fd, 0, 0L);
g->locked = FALSE;	g->locked = FALSE;

	return TRUE;
} /* gbl_unlock() */	} /* gbl_unlock() */

void gbl_close(global_handle *g)	void gbl_close(global_handle *g)
Line 292 int gbl_write_header(global_handle *g, g	Line 323 int gbl_write_header(global_handle *g, g
return FALSE;	return FALSE;
}	}

gbl_lock (g, 1);	if (g->locked == FALSE) gbl_lock (g, 1);
old_position = lseek (g->fd, 0, SEEK_CUR);	old_position = lseek (g->fd, 0, SEEK_CUR);
lseek (g->fd, 0, SEEK_SET);	lseek (g->fd, 0, SEEK_SET);

Line 302 int gbl_write_header(global_handle *g, g	Line 333 int gbl_write_header(global_handle *g, g
}	}

lseek (g->fd, old_position, SEEK_SET);	lseek (g->fd, old_position, SEEK_SET);
gbl_unlock (g);	if (g->locked == TRUE) gbl_unlock (g);

	gbl_read_header (g, &g->header);

return TRUE;	return TRUE;
} /* gbl_write_header() */	} /* gbl_write_header() */
Line 371 int gbl_create(global_handle *g)	Line 404 int gbl_create(global_handle *g)
g->age = time (0L);	g->age = time (0L);
g->last_block = 0;	g->last_block = 0;
g->use_count = 1;	g->use_count = 1;
	g->fast_path = 0;

gbl_write_initial_header (g);	gbl_write_initial_header (g);

return OK;	return OK;
Line 380 int gbl_create(global_handle *g)	Line 414 int gbl_create(global_handle *g)
short gbl_open(global_handle *g, short action)	short gbl_open(global_handle *g, short action)
{	{
int result;	int result;
global_header h;

if (g->opened == FALSE) {	if (g->opened == FALSE) {
	gbl_cache_miss (g);
while (1) {	while (1) {
errno = 0;	errno = 0;
g->fd = open (g->global_path, 2);	g->fd = open (g->global_path, 2);
Line 411 short gbl_open(global_handle *g, short a	Line 445 short gbl_open(global_handle *g, short a
}	}
else {	else {
g->opened = TRUE;	g->opened = TRUE;
result = gbl_read_header (g, &h);	result = gbl_read_header (g, &g->header);

if (result == GBL_HDR_OK) {	if (result == GBL_HDR_OK) {
g->opened = TRUE;	g->opened = TRUE;
}	}
else {	else {
gbl_close (g);	gbl_close (g);
	set_io (UNIX);

	switch (result) {

	case GBL_HDR_BADMAGIC:
	fprintf (stderr, "gbl_open: bad magic value in %s [FATAL]\n", g->global_name);
	exit (1);
	break;

	case GBL_HDR_BADVERSION:
	fprintf (stderr, "gbl_open: global version is %d in %s (must be %d) [FATAL]\n", g->header.format_version, g->global_name, GBL_FORMAT_VERSION);
	exit (1);
	break;

	}

return FALSE;	return FALSE;
}	}
}	}
Line 427 short gbl_open(global_handle *g, short a	Line 477 short gbl_open(global_handle *g, short a

} /* gbl_open() */	} /* gbl_open() */

	int gbl_read_block(global_handle g, unsigned long blocknum, char block)
	{
	unsigned long hdr_offset;
	hdr_offset = sizeof (global_header);

	if (g->opened == FALSE) {
	return FALSE;
	}

	gbl_lock (g, 1);
	lseek (g->fd, hdr_offset + ((long) blocknum * (long) (g->header.block_size)), SEEK_SET);
	read (g->fd, block, g->header.block_size);
	g->last_block = blocknum;
	g->use_count++;
	g->read_ops++;
	gbl_unlock (g);

	return TRUE;
	} /* gbl_read_block() */

	int gbl_write_block(global_handle g, unsigned long blocknum, char block)
	{
	int errsav;
	unsigned long hdr_offset;
	hdr_offset = sizeof (global_header);

	if (g->opened == FALSE) {
	return FALSE;
	}

	if (!g->locked) {
	gbl_lock (g, 1);
	}

	for (;;) {

	errno = 0;

	lseek (g->fd, hdr_offset + (blocknum * g->header.block_size), SEEK_SET);
	write (g->fd, block, BLOCKLEN);
	errsav = errno;
	g->last_block = blocknum;
	g->use_count++;
	g->write_ops++;

	if (errsav == 0) break;

	panic ();

	}

	gbl_update_tid (g);

	if (g->locked) {
	gbl_unlock (g);
	}

	return TRUE;
	}

global_handle gbl_handle(char key)	global_handle gbl_handle(char key)
{	{
global_handle *g;	global_handle *g;
char global_name[256];	char global_name[256];
int i;	int i;
long path_len;
char block[BLOCKLEN];
struct stat dinf;	struct stat dinf;

i = 0;	i = 0;
Line 474 global_handle gbl_handle(char key)	Line 582 global_handle gbl_handle(char key)
g->opened = FALSE;	g->opened = FALSE;
g->fd = 0;	g->fd = 0;
g->fast_path = -1;	g->fast_path = -1;
	g->cache_misses = 0;
	g->cache_hits = 0;
	g->read_ops = 0;
	g->write_ops = 0;

strcpy (g->global_name, global_name);	strcpy (g->global_name, global_name);
gbl_path (key, g->global_path);	gbl_path (key, g->global_path);
Line 568 void global_bltin (short action, char *k	Line 680 void global_bltin (short action, char *k
unsigned long hdr_offset;	unsigned long hdr_offset;

/* these must be static variables */	/* these must be static variables */
static short filedes; /* filedescr for global access */
static char filnam[256]; /* name of global/unix file */	static char filnam[256]; /* name of global/unix file */

/* the following vars may be */	/* the following vars may be */
Line 597 void global_bltin (short action, char *k	Line 708 void global_bltin (short action, char *k

int iresult;	int iresult;

struct stat dinf; /* get modification date */

long savj;
long savch; /* saved j and ch for multiple pathes */
register long int i;	register long int i;
register long int j;	register long int j;
register long int k;	register long int k;
register long int ch;	register long int ch;
long pathscan; /* flag for repeated scan of pathlist setting an undef global */

	j = 0;

hdr_offset = sizeof (global_header);	hdr_offset = sizeof (global_header);

/* process optional limitations */	/* process optional limitations */
Line 971 reopen:	Line 1079 reopen:
merr_raise (iresult);	merr_raise (iresult);
return;	return;
}	}

for (;;) {

errno = 0;

lseek (g->fd, hdr_offset + (ROOT * BLOCKLEN), SEEK_SET);
write (g->fd, block, BLOCKLEN);

if (errno == 0) break;

panic ();
}

	gbl_write_block (g, ROOT, block);

block[NRBLK] = 0;	block[NRBLK] = 0;
block[NRBLK + 1] = 0;	block[NRBLK + 1] = 0;
block[NRBLK + 2] = ROOT; /* clear */	block[NRBLK + 2] = ROOT; /* clear */
Line 1019 reopen:	Line 1117 reopen:
/* odd numbered actions get read access (get_sym,data,fra_order) 3 */	/* odd numbered actions get read access (get_sym,data,fra_order) 3 */
/* even ones read/write access (set_sym,kill_sym) 1 */	/* even ones read/write access (set_sym,kill_sym) 1 */

lock:	/* temporarily disabled
	lock:
	*/

if (action == get_sym) {	if (action == get_sym) {

tfast0:	tfast0:
gbl_lock (g, 3);	gbl_lock (g, 3);
if (tryfast) goto tfast1; /* try again last block */
	if (g->fast_path > 0) goto tfast1; /* try again last block */

blknbr = g->last_block = ROOT; /* start with ROOT block */	blknbr = g->last_block = ROOT; /* start with ROOT block */

for (;;) {	for (;;) {


tfast1:	tfast1:
	gbl_read_block (g, blknbr, block);
lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);


tfast2:

if ((typ = block[BTYP]) == DATA) { /* scan data block: here we test for equality only */

offset = UNSIGN (block[OFFS]) * 256 +	/* temporarily disabled
UNSIGN (block[OFFS + 1]);	tfast2:
j = UNSIGN (block[0]);	*/
i = 0;	if ((typ = block[BTYP]) == DATA) { /* scan data block: here we test for equality only */

stcpy0 (key1, &block[2], j); /* get first key */

ch = keyl; /* ch is a register! */

while (i < offset) {

j = UNSIGN (block[i++]); /* length of key - offset */
k = UNSIGN (block[i++]); /* offset into previous entry */

#ifdef VERSNEW

stcpy0 (&key0[k], &block[i], j);	offset = UNSIGN (block[OFFS]) * 256 +
i += j;	UNSIGN (block[OFFS + 1]);
j += k;	j = UNSIGN (block[0]);
	i = 0;
#else

j += k;	stcpy0 (key1, &block[2], j); /* get first key */

while (k < j) key1[k++] = block[i++]; /* get key */	ch = keyl; /* ch is a register! */

#endif /* VERSNEW */	while (i < offset) {

if (j != ch) { /* keys have different length */	j = UNSIGN (block[i++]); /* length of key - offset */
	k = UNSIGN (block[i++]); /* offset into previous entry */

	j += k;

	while (k < j) key1[k++] = block[i++]; /* get key */

	if (j != ch) { /* keys have different length */

	i += UNSIGN (block[i]);
	i++;

	continue;

	}

	j = ch;

	do {
	j--;
	} while (compactkey[j] == key1[j]); /* compare keys */


	if (j < 0) {

	k = UNSIGN (block[i++]);
	stcpy0 (data, &block[i], k); /* get value */
	data[k] = EOL1; /* append EOL */

	goto quit;

	}

i += UNSIGN (block[i]);	i += UNSIGN (block[i]);
i++;	i++; /* skip data */

continue;	}

	/* fast access failed. try normal path */
	if (tryfast) {
	gbl_cache_miss (g);
	goto tfast0;
}	}

j = ch;	merr_raise (M7);
	data[0] = EOL;

do {	goto quit; /* variable not found */
j--;	}
} while (compactkey[j] == key1[j]); /* compare keys */	else {

	if (g->fast_path > 0) {
if (j < 0) {	gbl_cache_miss (g);
	goto tfast0;
	}

	if (typ == EMPTY) {

k = UNSIGN (block[i++]);	if (blknbr == ROOT) {
stcpy0 (data, &block[i], k); /* get value */	gbl_close (g);
data[k] = EOL1; /* append EOL */	goto reopen;
	}

	merr_raise (DBDGD);
goto quit;	goto quit;

}	}

i += UNSIGN (block[i]);
i++; /* skip data */

}

/* fast access failed. try normal path */
if (tryfast) {
tryfast = FALSE;
goto tfast0;
}

merr_raise (M7);
data[0] = EOL;

goto quit; /* variable not found */
}
else {

if (tryfast) {
tryfast = FALSE;
goto tfast0;
}

if (typ == EMPTY) {

if (blknbr == ROOT) {
//close (filedes);
gbl_close (g);
goto reopen;
}

merr_raise (DBDGD);
goto quit;

}	}

}	scanpblk (block, &addr, &found);

scanpblk (block, &addr, &found);	addr += UNSIGN (block[addr]) + 2; /* skip key */

addr += UNSIGN (block[addr]) + 2; /* skip key */	if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == g->last_block) {

if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == g->last_block) {
merr_raise (DBDGD);	merr_raise (DBDGD);
goto quit;	goto quit;
}	}

addr += PLEN; /* skip data */	addr += PLEN; /* skip data */
g->last_block = blknbr;	g->last_block = blknbr;
	g->fast_path = 1;

if (merr () == INRPT) goto quit;	if (merr () == INRPT) goto quit;

Line 1156 tfast2:	Line 1245 tfast2:
/* a KILL on an unsubscripted global deletes the entire file */	/* a KILL on an unsubscripted global deletes the entire file */
if (action == kill_sym && compactkey[0] == g_EOL) {	if (action == kill_sym && compactkey[0] == g_EOL) {

lseek (g->fd, hdr_offset + ROOT, SEEK_SET);	/* note : UNIX does not tell other jobs that a file has been unlinked */

/* note : UNIX does not tell other */
block[BTYP] = EMPTY; /* jobs that a file has been unlinked */

/* as long as they keep it open. */	/* as long as they keep it open. */
/* so we mark this global as EMPTY */	/* so we mark this global as EMPTY */
write (g->fd, block, BLOCKLEN);	block[BTYP] = EMPTY;

	gbl_write_block (g, ROOT, block);

gbl_unlock (g);	gbl_unlock (g);
gbl_close (g);	gbl_close (g);
Line 1188 k_again: /* entry point for repeated	Line 1275 k_again: /* entry point for repeated

traceblk[trx] = blknbr;	traceblk[trx] = blknbr;
traceadr[trx] = 0;	traceadr[trx] = 0;

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

typ = block[BTYP];	typ = block[BTYP];

if (typ == DATA) {	if (typ == DATA) {
Line 1223 k_again: /* entry point for repeated	Line 1308 k_again: /* entry point for repeated

addr += PLEN; /* skip data */	addr += PLEN; /* skip data */
g->last_block = blknbr;	g->last_block = blknbr;
	g->fast_path = 1;
}	}

traceadr[trx] = addr;	traceadr[trx] = addr;
Line 1357 s10: {	Line 1443 s10: {

}	}

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (g->fd, block, BLOCKLEN);

if (traceadr[trx] == 0) update (g->fd, compactkey, keyl);	if (traceadr[trx] == 0) update (g, compactkey, keyl);

break;	break;
}	}
Line 1444 s20:	Line 1529 s20:
}	}

stcpy0 (&block[++addr], data, (long) datal);	stcpy0 (&block[++addr], data, (long) datal);
lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);

gbl_update_tid (g);	gbl_write_block (g, blknbr, block);

break;	break;

Line 1478 s20:	Line 1561 s20:
if (addr >= offset) {	if (addr >= offset) {

if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2]))) {	if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2]))) {

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);
j1 = UNSIGN (block[0]);	j1 = UNSIGN (block[0]);

i = 0;	i = 0;
Line 1561 s20:	Line 1643 s20:

goto quit;	goto quit;
} /* no next block */	} /* no next block */

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);
scandblk (block, &addr, &found);	scandblk (block, &addr, &found);

}	}
Line 1719 s20:	Line 1800 s20:
goto quit; /* no next block */	goto quit; /* no next block */
}	}

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
Line 1743 s20:	Line 1823 s20:
goto quit; /* no next block */	goto quit; /* no next block */
}	}

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
}	}
Line 1953 killo: /* entry from killone section	Line 2032 killo: /* entry from killone section

other = traceblk[--trx];	other = traceblk[--trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block);
read (g->fd, block, BLOCKLEN);

addr += UNSIGN (block[addr]);	addr += UNSIGN (block[addr]);
addr += (2 + PLEN); /* skip previous entry */	addr += (2 + PLEN); /* skip previous entry */
Line 1974 killo: /* entry from killone section	Line 2052 killo: /* entry from killone section

trx = trxsav;	trx = trxsav;

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
Line 2081 p_empty: /* entry if pointer block goes	Line 2158 p_empty: /* entry if pointer block goes

if (left) {	if (left) {

lseek (g->fd, hdr_offset + ((long) left * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, left, block0);
read (g->fd, block0, BLOCKLEN);

block0[RLPTR] = block[RLPTR];	block0[RLPTR] = block[RLPTR];
block0[RLPTR + 1] = block[RLPTR + 1];	block0[RLPTR + 1] = block[RLPTR + 1];
block0[RLPTR + 2] = block[RLPTR + 2];	block0[RLPTR + 2] = block[RLPTR + 2];

lseek (g->fd, hdr_offset + ((long) left * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, left, block0);
write (g->fd, block0, BLOCKLEN);

}	}

if (right) {	if (right) {

lseek (g->fd, hdr_offset + ((long) right * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, right, block0);
read (g->fd, block0, BLOCKLEN);

block0[LLPTR] = block[LLPTR];	block0[LLPTR] = block[LLPTR];
block0[LLPTR + 1] = block[LLPTR + 1];	block0[LLPTR + 1] = block[LLPTR + 1];
block0[LLPTR + 2] = block[LLPTR + 2];	block0[LLPTR + 2] = block[LLPTR + 2];

lseek (g->fd, hdr_offset + ((long) right * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, right, block0);
write (g->fd, block0, BLOCKLEN);

}	}

b_free (g->fd, blknbr); /* modify free list */	b_free (g, blknbr); /* modify free list */

/* delete pointer */	/* delete pointer */
/**************************/	/**************************/
Line 2120 p_empty: /* entry if pointer block goes	Line 2193 p_empty: /* entry if pointer block goes
blknbr = traceblk[--trx];	blknbr = traceblk[--trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (g->fd, hdr_offset + ((long) (blknbr) * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);
offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
freecnt = UNSIGN (block[addr]) + 2 + PLEN;	freecnt = UNSIGN (block[addr]) + 2 + PLEN;
Line 2133 p_empty: /* entry if pointer block goes	Line 2205 p_empty: /* entry if pointer block goes

if (blknbr == ROOT) { /* global went empty */	if (blknbr == ROOT) { /* global went empty */

lseek (g->fd, hdr_offset + 0L, SEEK_SET);

/* note : UNIX does not tell other */	/* note : UNIX does not tell other */
block[BTYP] = EMPTY; /* jobs that a file has been unlinked */	block[BTYP] = EMPTY; /* jobs that a file has been unlinked */

/* as long as they keep it open. */	/* as long as they keep it open. */
/* so we mark this global as EMPTY */	/* so we mark this global as EMPTY */
write (g->fd, block, BLOCKLEN);	gbl_write_block (g, 0L, block);

gbl_close (g);	gbl_close (g);
unlink (filnam);	unlink (filnam);

Line 2165 p_empty: /* entry if pointer block goes	Line 2238 p_empty: /* entry if pointer block goes

for (i = offset; i < offset + freecnt; block[i++] = 0);	for (i = offset; i < offset + freecnt; block[i++] = 0);

lseek (g->fd, hdr_offset + ((long) (blknbr) * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (g->fd, block, BLOCKLEN);

if (addr == 0) { /* update of pointer */	if (addr == 0) { /* update of pointer */
traceadr[trx] = 0;	traceadr[trx] = 0;

update (g->fd, &block[2], (long) UNSIGN (block[0]));	update (g, &block[2], (long) UNSIGN (block[0]));
}	}

trx = trxsav;	trx = trxsav;
Line 2213 p_empty: /* entry if pointer block goes	Line 2285 p_empty: /* entry if pointer block goes
}	}
block[OFFS] = offset / 256;	block[OFFS] = offset / 256;
block[OFFS + 1] = offset % 256;	block[OFFS + 1] = offset % 256;
lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	gbl_write_block (g, blknbr, block);

if (addr < 3) { /* update of pointer */	if (addr < 3) { /* update of pointer */
traceadr[trx] = 0;	traceadr[trx] = 0;
update (g->fd, &block[2], (long) UNSIGN (block[0]));	update (g, &block[2], (long) UNSIGN (block[0]));
}	}
}	}

Line 2239 zinv:	Line 2312 zinv:
data[0] = EOL1;	data[0] = EOL1;
goto quit;	goto quit;
} /* no previous block */	} /* no previous block */

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

addr = UNSIGN (block[OFFS]) * 256 +	addr = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
Line 2420 zinv:	Line 2492 zinv:
break; /* no next block */	break; /* no next block */
}	}

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
Line 2549 splitd: /* split data block in two se	Line 2620 splitd: /* split data block in two se
/* 'addr' there I would like to insert, if possible (which is not) */	/* 'addr' there I would like to insert, if possible (which is not) */
/* 'offset' filled up to this limit */	/* 'offset' filled up to this limit */

getnewblk (g->fd, &newblk); /* get a new block */	getnewblk (g, &newblk); /* get a new block */

/* if we have to insert at the begin or end of a block */	/* if we have to insert at the begin or end of a block */
/* we don't split - we just start a new block */	/* we don't split - we just start a new block */
Line 2567 splitd: /* split data block in two se	Line 2638 splitd: /* split data block in two se
block[RLPTR + 1] = newblk % 65536 / 256;	block[RLPTR + 1] = newblk % 65536 / 256;
block[RLPTR + 2] = newblk % 256;	block[RLPTR + 2] = newblk % 256;

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (g->fd, block, BLOCKLEN);

block[RLPTR] = right;	block[RLPTR] = right;
block[RLPTR + 1] = right1;	block[RLPTR + 1] = right1;
Line 2580 splitd: /* split data block in two se	Line 2650 splitd: /* split data block in two se
addr = 0;	addr = 0;
blknbr = newblk;	blknbr = newblk;

insert (g->fd, compactkey, keyl, newblk);	insert (g, compactkey, keyl, newblk);

/* up-date LL-PTR of RL-block */	/* up-date LL-PTR of RL-block */
if ((other = right * 65536 + right1 * 256 + right2)) {	if ((other = right * 65536 + right1 * 256 + right2)) {

char block0[BLOCKLEN];	char block0[BLOCKLEN];

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block0);
read (g->fd, block0, BLOCKLEN);

block0[LLPTR] = blknbr / 65536;	block0[LLPTR] = blknbr / 65536;
block0[LLPTR + 1] = blknbr % 65536 / 256;	block0[LLPTR + 1] = blknbr % 65536 / 256;
block0[LLPTR + 2] = blknbr % 256;	block0[LLPTR + 2] = blknbr % 256;

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, other, block0);
write (g->fd, block0, BLOCKLEN);

}	}

goto spltex;	goto spltex;
Line 2613 splitd: /* split data block in two se	Line 2681 splitd: /* split data block in two se
block[LLPTR + 1] = newblk % 65536 / 256;	block[LLPTR + 1] = newblk % 65536 / 256;
block[LLPTR + 2] = newblk % 256;	block[LLPTR + 2] = newblk % 256;

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (g->fd, block, BLOCKLEN);

block[LLPTR] = left;	block[LLPTR] = left;
block[LLPTR + 1] = left1;	block[LLPTR + 1] = left1;
block[LLPTR + 2] = left2;	block[LLPTR + 2] = left2;
Line 2626 splitd: /* split data block in two se	Line 2693 splitd: /* split data block in two se
blknbr = newblk;	blknbr = newblk;
traceadr[trx] = (-1); /* inhibit second update of pointers */	traceadr[trx] = (-1); /* inhibit second update of pointers */

insert (g->fd, compactkey, keyl, newblk);	insert (g, compactkey, keyl, newblk);

if (addr < 3) { /* update of pointer */	if (addr < 3) { /* update of pointer */
traceadr[trx] = 0;	traceadr[trx] = 0;

update (g->fd, compactkey, keyl);	update (g, compactkey, keyl);
}	}

/* other is *always* zero !!!	/* other is *always* zero !!!
Line 2739 splitd: /* split data block in two se	Line 2806 splitd: /* split data block in two se
block0[LLPTR + 1] = blknbr % 65536 / 256;	block0[LLPTR + 1] = blknbr % 65536 / 256;
block0[LLPTR + 2] = blknbr % 256;	block0[LLPTR + 2] = blknbr % 256;

lseek (g->fd, hdr_offset + ((long) (newblk) * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, newblk, block0);
write (g->fd, block0, BLOCKLEN);

offset = limit;	offset = limit;
/* insert new block in pointer structure */	/* insert new block in pointer structure */

insert (g->fd, &block0[2], (long) UNSIGN (block0[0]), newblk);	insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk);

/* up-date LL-PTR of RL-block */	/* up-date LL-PTR of RL-block */
if (other != 0) {	if (other != 0) {

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block0);
read (g->fd, block0, BLOCKLEN);

block0[LLPTR] = newblk / 65536;	block0[LLPTR] = newblk / 65536;
block0[LLPTR + 1] = newblk % 65536 / 256;	block0[LLPTR + 1] = newblk % 65536 / 256;
block0[LLPTR + 2] = newblk % 256;	block0[LLPTR + 2] = newblk % 256;

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, other, block0);
write (g->fd, block0, BLOCKLEN);

}	}

Line 2779 splitd: /* split data block in two se	Line 2843 splitd: /* split data block in two se
block0[LLPTR + 1] = blknbr % 65536 / 256;	block0[LLPTR + 1] = blknbr % 65536 / 256;
block0[LLPTR + 2] = blknbr % 256;	block0[LLPTR + 2] = blknbr % 256;

lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (g->fd, block, BLOCKLEN);
stcpy0 (block, block0, (long) BLOCKLEN);	stcpy0 (block, block0, (long) BLOCKLEN);

traceadr[trx] = (addr -= limit);	traceadr[trx] = (addr -= limit);
traceblk[trx] = (blknbr = newblk);	traceblk[trx] = (blknbr = newblk);

/* insert new block in pointer structure */	/* insert new block in pointer structure */
insert (g->fd, &block0[2], (long) UNSIGN (block0[0]), newblk);	insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk);

/* up-date LL-PTR of RL-block */	/* up-date LL-PTR of RL-block */
if (other != 0) {	if (other != 0) {

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block0);
read (g->fd, block0, BLOCKLEN);

block0[LLPTR] = newblk / 65536;	block0[LLPTR] = newblk / 65536;
block0[LLPTR + 1] = newblk % 65536 / 256;	block0[LLPTR + 1] = newblk % 65536 / 256;
block0[LLPTR + 2] = newblk % 256;	block0[LLPTR + 2] = newblk % 256;

lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, other, block0);
write (g->fd, block0, BLOCKLEN);

}	}

Line 2827 spltex:	Line 2889 spltex:
* 'addr' there I would like to insert, if possible (which is not)	* 'addr' there I would like to insert, if possible (which is not)
* 'offset' filled up to this limit	* 'offset' filled up to this limit
*/	*/
static void splitp (short filedes, char block, long addr, long offs, unsigned long blknbr)	static void splitp (global_handle g, char block, long addr, long offs, unsigned long *blknbr)
{	{

char block0[BLOCKLEN];	char block0[BLOCKLEN];
Line 2835 static void splitp (short filedes, char	Line 2897 static void splitp (short filedes, char
unsigned long newblk;	unsigned long newblk;
unsigned long other;	unsigned long other;
register int i, j;	register int i, j;

long hdr_offset;

hdr_offset = sizeof (global_header);

getnewblk (filedes, &newblk); /* get a new block */	getnewblk (g, &newblk); /* get a new block */

if (blknbr == ROOT) { / ROOT overflow is special */	if (blknbr == ROOT) { / ROOT overflow is special */

Line 2875 static void splitp (short filedes, char	Line 2933 static void splitp (short filedes, char
block0[NRBLK + 2] = i % 256;	block0[NRBLK + 2] = i % 256;
block0[BTYP] = POINTER;	block0[BTYP] = POINTER;

lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_write_block (g, ROOT, block0);
write (filedes, block0, BLOCKLEN);

/* shift trace_stack */	/* shift trace_stack */
j = trx++;	j = trx++;
Line 2893 static void splitp (short filedes, char	Line 2950 static void splitp (short filedes, char
traceblk[1] = newblk;	traceblk[1] = newblk;
*blknbr = newblk;	*blknbr = newblk;

getnewblk (filedes, &newblk); /* get a new block */	getnewblk (g, &newblk); /* get a new block */

}	}

Line 2947 static void splitp (short filedes, char	Line 3004 static void splitp (short filedes, char
block0[LLPTR + 1] = (*blknbr) % 65536 / 256;	block0[LLPTR + 1] = (*blknbr) % 65536 / 256;
block0[LLPTR + 2] = (*blknbr) % 256;	block0[LLPTR + 2] = (*blknbr) % 256;

lseek (filedes, hdr_offset + ((long) (newblk) * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, newblk, block0);
write (filedes, block0, BLOCKLEN);

(*offs) = limit;	(*offs) = limit;

insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk);	insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk);

/* up-date LL-PTR of RL-block */	/* up-date LL-PTR of RL-block */
if (other != 0) {	if (other != 0) {

lseek (filedes, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block0);
read (filedes, block0, BLOCKLEN);

block0[LLPTR] = newblk / 65536;	block0[LLPTR] = newblk / 65536;
block0[LLPTR + 1] = newblk % 65536 / 256;	block0[LLPTR + 1] = newblk % 65536 / 256;
block0[LLPTR + 2] = newblk % 256;	block0[LLPTR + 2] = newblk % 256;

lseek (filedes, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, other, block0);
write (filedes, block0, BLOCKLEN);

}	}

Line 2989 static void splitp (short filedes, char	Line 3043 static void splitp (short filedes, char

(*addr) -= limit;	(*addr) -= limit;
(*offs) -= limit;	(*offs) -= limit;

	gbl_write_block (g, *blknbr, block);

lseek (filedes, hdr_offset + ((long) (blknbr) (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block, BLOCKLEN);
stcpy0 (block, block0, (long) BLOCKLEN);	stcpy0 (block, block0, (long) BLOCKLEN);

(*blknbr) = newblk;	(*blknbr) = newblk;

insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk);	insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk);

/* up-date LL-PTR of RL-block */	/* up-date LL-PTR of RL-block */
if (other != 0) {	if (other != 0) {

lseek (filedes, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, other, block0);
read (filedes, block0, BLOCKLEN);

block0[LLPTR] = newblk / 65536;	block0[LLPTR] = newblk / 65536;
block0[LLPTR + 1] = newblk % 65536 / 256;	block0[LLPTR + 1] = newblk % 65536 / 256;
block0[LLPTR + 2] = newblk % 256;	block0[LLPTR + 2] = newblk % 256;

lseek (filedes, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, other, block0);
write (filedes, block0, BLOCKLEN);

}	}

Line 3024 static void splitp (short filedes, char	Line 3076 static void splitp (short filedes, char
* ins_key: key to be inserted	* ins_key: key to be inserted
* keyl: length of that key	* keyl: length of that key
*/	*/
static void update (short filedes, char *ins_key, long keyl)	static void update (global_handle g, char ins_key, long keyl)
{	{
long offset;	long offset;
long addr;	long addr;
unsigned long blknbr;	unsigned long blknbr;
char block[BLOCKLEN];	char block[BLOCKLEN];
long i, j, k;	long i, j, k;
long hdr_offset;

hdr_offset = sizeof (global_header);

while (traceadr[trx] == 0) { /* update of pointer blocks necessary */	while (traceadr[trx] == 0) { /* update of pointer blocks necessary */

Line 3041 static void update (short filedes, char	Line 3090 static void update (short filedes, char

blknbr = traceblk[trx];	blknbr = traceblk[trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (filedes, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (filedes, block, BLOCKLEN);

{	{
long oldkeyl;	long oldkeyl;
Line 3070 static void update (short filedes, char	Line 3118 static void update (short filedes, char
else if (j < 0) { /* we need more space */	else if (j < 0) { /* we need more space */

/* block too small */	/* block too small */
if ((offset - j) > DATALIM) splitp (filedes, block, &addr, &offset, &blknbr);	if ((offset - j) > DATALIM) splitp (g, block, &addr, &offset, &blknbr);

i = offset;	i = offset;
offset -= j;	offset -= j;
Line 3093 static void update (short filedes, char	Line 3141 static void update (short filedes, char
while (i < keyl) block[j++] = ins_key[i++];	while (i < keyl) block[j++] = ins_key[i++];

/* block pointed to remains the same */	/* block pointed to remains the same */
lseek (filedes, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blknbr, block);
write (filedes, block, BLOCKLEN);

}	}

lseek (filedes, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blknbr, block);
read (filedes, block, BLOCKLEN);

}	}

Line 3114 static void update (short filedes, char	Line 3159 static void update (short filedes, char
* key_len: length of that key	* key_len: length of that key
* blknbr: key points to this block	* blknbr: key points to this block
*/	*/
static void insert (int filedes, char ins_key, long key_len, unsigned long blknbr) / insert pointer */	static void insert (global_handle g, char ins_key, long key_len, unsigned long blknbr) /* insert pointer */
{	{
unsigned long blk;	unsigned long blk;
char block[BLOCKLEN];	char block[BLOCKLEN];
Line 3123 static void insert (int filedes, char *i	Line 3168 static void insert (int filedes, char *i
long needed;	long needed;
long addr;	long addr;
register int i, k;	register int i, k;
long hdr_offset;

hdr_offset = sizeof (global_header);

trxsav = trx--;	trxsav = trx--;
blk = traceblk[trx];	blk = traceblk[trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (filedes, hdr_offset + ((long) (blk) * (long) (BLOCKLEN)), SEEK_SET);	gbl_read_block (g, blk, block);
read (filedes, block, BLOCKLEN);

offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
Line 3144 static void insert (int filedes, char *i	Line 3185 static void insert (int filedes, char *i

needed = key_len + 2 + PLEN;	needed = key_len + 2 + PLEN;

if ((offset + needed) > DATALIM) splitp (filedes, block, &addr, &offset, &blk);	if ((offset + needed) > DATALIM) splitp (g, block, &addr, &offset, &blk);

/* insert key */	/* insert key */
i = (offset += needed);	i = (offset += needed);
Line 3168 static void insert (int filedes, char *i	Line 3209 static void insert (int filedes, char *i
block[i++] = blknbr % 65536 / 256;	block[i++] = blknbr % 65536 / 256;
block[i] = blknbr % 256;	block[i] = blknbr % 256;

lseek (filedes, hdr_offset + ((long) (blk) * (long) (BLOCKLEN)), SEEK_SET);	gbl_write_block (g, blk, block);
write (filedes, block, BLOCKLEN);

trx = trxsav;	trx = trxsav;

Line 3181 static void insert (int filedes, char *i	Line 3221 static void insert (int filedes, char *i
* filedes: global file descriptor	* filedes: global file descriptor
* blknbr: block to be freed	* blknbr: block to be freed
*/	*/
static void b_free (short filedes, unsigned long blknbr)	static void b_free (global_handle *g, unsigned long blknbr)
{	{
char block0[BLOCKLEN];	char block0[BLOCKLEN];
unsigned long free;	unsigned long free;
unsigned long other;	unsigned long other;
long i;	long i;
long offset;	long offset;
long hdr_offset;

hdr_offset = sizeof (global_header);

/* mark block as empty */	/* mark block as empty */
lseek (filedes, hdr_offset + ((long) (blknbr) * BLOCKLEN), SEEK_SET);	gbl_read_block (g, blknbr, block0);
read (filedes, block0, BLOCKLEN);

block0[BTYP] = EMPTY;

lseek (filedes, hdr_offset + ((long) (blknbr) * BLOCKLEN), SEEK_SET);	block0[BTYP] = EMPTY;
write (filedes, block0, BLOCKLEN);
	gbl_write_block (g, blknbr, block0);

/* do we have a list of free blocks? */	/* do we have a list of free blocks? */
lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_read_block (g, ROOT, block0);
read (filedes, block0, BLOCKLEN);

if ((free = UNSIGN (block0[FREE]) * 65536 + UNSIGN (block0[FREE + 1]) * 256 + UNSIGN (block0[FREE + 2]))) {	if ((free = UNSIGN (block0[FREE]) * 65536 + UNSIGN (block0[FREE + 1]) * 256 + UNSIGN (block0[FREE + 2]))) {

for (;;) {	for (;;) {

lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);	gbl_read_block (g, free, block0);
read (filedes, block0, BLOCKLEN);

other = UNSIGN (block0[RLPTR]) * 65536 +	other = UNSIGN (block0[RLPTR]) * 65536 +
UNSIGN (block0[RLPTR + 1]) * 256 +	UNSIGN (block0[RLPTR + 1]) * 256 +
Line 3241 static void b_free (short filedes, unsig	Line 3274 static void b_free (short filedes, unsig
block0[RLPTR] = other / 65536;	block0[RLPTR] = other / 65536;
block0[RLPTR + 1] = other % 65536 / 256;	block0[RLPTR + 1] = other % 65536 / 256;
block0[RLPTR + 2] = other % 256;	block0[RLPTR + 2] = other % 256;

lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);	gbl_write_block (g, free, block0);
write (filedes, block0, BLOCKLEN);

for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */	for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */

Line 3259 static void b_free (short filedes, unsig	Line 3291 static void b_free (short filedes, unsig

}	}
else {	else {
	getnewblk (g, &free);
getnewblk (filedes, &free);

/* set FBLK free blocks pointer */	/* set FBLK free blocks pointer */
lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_read_block (g, ROOT, block0);
read (filedes, block0, BLOCKLEN);

block0[FREE] = free / 65536;	block0[FREE] = free / 65536;
block0[FREE + 1] = free % 65536 / 256;	block0[FREE + 1] = free % 65536 / 256;
block0[FREE + 2] = free % 256;	block0[FREE + 2] = free % 256;

lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_write_block (g, ROOT, block0);
write (filedes, block0, BLOCKLEN);

for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */	for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */

Line 3286 static void b_free (short filedes, unsig	Line 3315 static void b_free (short filedes, unsig
block0[OFFS] = offset / 256;	block0[OFFS] = offset / 256;
block0[OFFS + 1] = offset % 256;	block0[OFFS + 1] = offset % 256;

lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);	gbl_write_block (g, free, block0);
write (filedes, block0, BLOCKLEN);

return;	return;
} /* end of b_free() */	} /* end of b_free() */
Line 3407 static void scandblk (char *block, long	Line 3435 static void scandblk (char *block, long
* filedes: global file descriptor	* filedes: global file descriptor
* blknbr: number of new block	* blknbr: number of new block
*/	*/
static void getnewblk (int filedes, unsigned long *blknbr)	static void getnewblk (global_handle g, unsigned long blknbr)
{	{
char nblock[BLOCKLEN];	char nblock[BLOCKLEN];
unsigned long freeblks, no_of_blks;	unsigned long freeblks, no_of_blks;
long other;	long other;
long offset;	long offset;
long hdr_offset;

hdr_offset = sizeof (global_header);	gbl_read_block (g, ROOT, nblock);

lseek (filedes, hdr_offset + ROOT, SEEK_SET);
read (filedes, nblock, BLOCKLEN);

freeblks = UNSIGN (nblock[FREE]) * 65536 + UNSIGN (nblock[FREE + 1]) * 256 + UNSIGN (nblock[FREE + 2]);	freeblks = UNSIGN (nblock[FREE]) * 65536 + UNSIGN (nblock[FREE + 1]) * 256 + UNSIGN (nblock[FREE + 2]);
no_of_blks = UNSIGN (nblock[NRBLK]) * 65536 + UNSIGN (nblock[NRBLK + 1]) * 256 + UNSIGN (nblock[NRBLK + 2]);	no_of_blks = UNSIGN (nblock[NRBLK]) * 65536 + UNSIGN (nblock[NRBLK + 1]) * 256 + UNSIGN (nblock[NRBLK + 2]);

if (freeblks) {	if (freeblks) {

lseek (filedes, hdr_offset + ((long) (freeblks) * BLOCKLEN), SEEK_SET);	gbl_read_block (g, freeblks, nblock);
read (filedes, nblock, BLOCKLEN);

offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]);	offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]);

Line 3438 static void getnewblk (int filedes, unsi	Line 3461 static void getnewblk (int filedes, unsi
/* update RL-block, if any */	/* update RL-block, if any */
if (other) {	if (other) {

lseek (filedes, hdr_offset + ((long) (other) * BLOCKLEN), SEEK_SET);	gbl_read_block (g, other, nblock);
read (filedes, nblock, BLOCKLEN);

nblock[LLPTR] = 0;	nblock[LLPTR] = 0;
nblock[LLPTR + 1] = 0;	nblock[LLPTR + 1] = 0;
nblock[LLPTR + 2] = 0;	nblock[LLPTR + 2] = 0;

lseek (filedes, hdr_offset + ((long) (other) * BLOCKLEN), SEEK_SET);	gbl_write_block (g, other, nblock);
write (filedes, nblock, BLOCKLEN);

}	}

/* update ROOT block */	/* update ROOT block */
lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_read_block (g, ROOT, nblock);
read (filedes, nblock, BLOCKLEN);

nblock[FREE] = other / 65536;	nblock[FREE] = other / 65536;
nblock[FREE + 1] = other % 65536 / 256;	nblock[FREE + 1] = other % 65536 / 256;
nblock[FREE + 2] = other % 256;	nblock[FREE + 2] = other % 256;

lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_write_block (g, ROOT, nblock);
write (filedes, nblock, BLOCKLEN);

return;	return;

Line 3471 static void getnewblk (int filedes, unsi	Line 3490 static void getnewblk (int filedes, unsi
nblock[offset + 1] = 0;	nblock[offset + 1] = 0;
nblock[OFFS] = offset / 256;	nblock[OFFS] = offset / 256;
nblock[OFFS + 1] = offset % 256;	nblock[OFFS + 1] = offset % 256;

lseek (filedes, hdr_offset + ((long) (freeblks) * BLOCKLEN), SEEK_SET);	gbl_write_block (g, freeblks, nblock);
write (filedes, nblock, BLOCKLEN);

return;	return;

Line 3484 static void getnewblk (int filedes, unsi	Line 3502 static void getnewblk (int filedes, unsi
nblock[NRBLK] = no_of_blks / 65536;	nblock[NRBLK] = no_of_blks / 65536;
nblock[NRBLK + 1] = no_of_blks % 65536 / 256;	nblock[NRBLK + 1] = no_of_blks % 65536 / 256;
nblock[NRBLK + 2] = no_of_blks % 256;	nblock[NRBLK + 2] = no_of_blks % 256;

lseek (filedes, hdr_offset + ROOT, SEEK_SET);	gbl_write_block (g, ROOT, nblock);
write (filedes, nblock, BLOCKLEN);

*blknbr = no_of_blks;	*blknbr = no_of_blks;

for (;;) {

errno = 0;	gbl_write_block (g, no_of_blks, nblock);

lseek (filedes, hdr_offset + ((long) (no_of_blks) * BLOCKLEN), SEEK_SET);
write (filedes, nblock, BLOCKLEN);

if (errno == 0) break;

panic ();

}

return;	return;

Line 3630 static short int g_collate (char *t)	Line 3636 static short int g_collate (char *t)
/*	/*
* test whether 'str' is canonical	* test whether 'str' is canonical
*/	*/
//static short int g_numeric (char *str)
short g_numeric (char *str)	short g_numeric (char *str)
{	{
register int ptr = 0, ch;	register int ptr = 0, ch;
Line 3706 static void panic (void)	Line 3711 static void panic (void)
void gbl_dump_stat(void)	void gbl_dump_stat(void)
{	{
global_handle *g;	global_handle *g;
	int ct;
	int miss_pct;
	int hit_pct;
	unsigned long access_total;
	unsigned long hit_total;

printf ("FreeM Global Statistics [PID %d]\r\n", pid);	printf ("\r\nFreeM Global Statistics [PID %d]\r\n\r\n", pid);

printf ("%-20s%-10s%-20s%-10s%s\r\n", "GLOBAL", "USECT", "AGE", "LAST BLK", "FILE");	printf ("%-20s%-10s%-10s%-10s%-12s%-20s%-10s%s\r\n", "GLOBAL", "USECT", "READS", "WRITES", "SLOW PTHCT", "AGE", "LAST BLK", "FILE");
printf ("%-20s%-10s%-20s%-10s%s\r\n", "======", "=====", "===", "========", "====");	printf ("%-20s%-10s%-10s%-10s%-12s%-20s%-10s%s\r\n", "======", "=====", "=====", "======", "==========", "===", "========", "====");

	access_total = 0;
	ct = 0;
for (g = global_handles_head; g != NULL; g = g->next) {	for (g = global_handles_head; g != NULL; g = g->next) {
printf ("%-20s%-10d%-20d%-10d%s\r\n", g->global_name, g->use_count, g->age, g->last_block, g->global_path);	printf ("%-20s%-10ld%-10ld%-10ld%-12ld%-20ld%-10ld%s\r\n",
}	g->global_name,
	g->use_count,
	g->read_ops,
	g->write_ops,
	g->cache_misses,
	g->age,
	g->last_block,
	g->global_path);
	ct++;
	access_total += g->use_count;
	}
	if (!ct) printf ("<no globals opened in this pid>\r\n");

	hit_total = access_total - gbl_cache_misses;
	miss_pct = (gbl_cache_misses * 100) / access_total;
	hit_pct = (hit_total * 100) / access_total;

	printf ("\r\nTotal accesses: %ld\r\n", access_total);
	printf ("Fast path hits %ld\t(%d%%)\r\n", hit_total, hit_pct);
	printf ("Fast path misses: %ld\t(%d%%)\r\n", gbl_cache_misses, miss_pct);
}	}

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Removed from v.1.10
changed lines
	Added in v.1.17