freem/src/global_bltin.c - diff

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Diff for /freem/src/global_bltin.c between versions 1.8 and 1.13

version 1.8, 2025/04/08 14:39:21	version 1.13, 2025/04/09 14:34:30
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 1.13 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
	* Global handler now uses a header file and maintains the last journaling transaction ID
	*
	* Revision 1.9 2025/04/08 16:46:11 snw
	* Add global file header and offsets
	*
* Revision 1.8 2025/04/08 14:39:21 snw	* Revision 1.8 2025/04/08 14:39:21 snw
* Initial work on global handler refactor	* Initial work on global handler refactor
*	*
Line 53	Line 68
#include <errno.h>	#include <errno.h>

#include "mpsdef.h"	#include "mpsdef.h"
	#include "journal.h"
#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 (short filedes, 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 (int filedes, unsigned long *blknbr);
Line 197 nextpath:	Line 215 nextpath:
buf[k] = NUL; /* NUL not EOL !!! */	buf[k] = NUL; /* NUL not EOL !!! */

return i;	return i;
} /* global_file */	} /* 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)
{	{
Line 207 int gbl_lock(global_handle *g, int type)	Line 238 int gbl_lock(global_handle *g, int type)

locking (g->fd, type, 0L);	locking (g->fd, type, 0L);
g->locked = TRUE;	g->locked = TRUE;
}	} /* gbl_lock() */

int gbl_unlock(global_handle *g)	int gbl_unlock(global_handle *g)
{	{
Line 217 int gbl_unlock(global_handle *g)	Line 248 int gbl_unlock(global_handle *g)

locking (g->fd, 0, 0L);	locking (g->fd, 0, 0L);
g->locked = FALSE;	g->locked = FALSE;
}	} /* gbl_unlock() */

void gbl_close(global_handle *g)	void gbl_close(global_handle *g)
{	{
Line 230 void gbl_close(global_handle *g)	Line 261 void gbl_close(global_handle *g)
g->locked = FALSE;	g->locked = FALSE;
g->opened = FALSE;	g->opened = FALSE;
}	}
}	} /* gbl_close() */

void gbl_close_all(void)	void gbl_close_all(void)
{	{
Line 239 void gbl_close_all(void)	Line 270 void gbl_close_all(void)
for (g = global_handles_head; g != NULL; g = g->next) {	for (g = global_handles_head; g != NULL; g = g->next) {
gbl_close (g);	gbl_close (g);
}	}
}	} /* gbl_close_all() */

	int gbl_write_initial_header(global_handle *g)
	{
	global_header hdr;
	unsigned long old_position;
	char m[5] = GBL_MAGIC;
	char msg[256];

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

	memcpy (hdr.magic, m, 5);
	hdr.format_version = GBL_FORMAT_VERSION;
	strncpy (hdr.host_triplet, HOST, 40);
	hdr.block_size = BLOCKLEN;
	hdr.last_transaction_id = 0;
	hdr.created = time (0L);
	hdr.last_backup = -1;

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

	if (write (g->fd, &hdr, sizeof (global_header)) == -1) {
	snprintf (msg, sizeof (msg), "error %d writing global header for %s", errno, g->global_name);
	m_fatal (msg);
	}

	lseek (g->fd, old_position, SEEK_SET);
	gbl_unlock (g);

	return TRUE;
	} /* gbl_write_initial_header() */


	int gbl_write_header(global_handle g, global_header hdr)
	{
	unsigned long old_position;
	char msg[256];

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

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

	if (write (g->fd, hdr, sizeof (global_header)) == -1) {
	snprintf (msg, sizeof (msg), "error %d writing global header for %s", errno, g->global_name);
	m_fatal (msg);
	}

	lseek (g->fd, old_position, SEEK_SET);
	gbl_unlock (g);

	gbl_read_header (g, &g->header);

	return TRUE;
	} /* gbl_write_header() */

	int gbl_read_header(global_handle g, global_header h)
	{
	unsigned long old_position;
	char m[5] = GBL_MAGIC;


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

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

	read (g->fd, h, sizeof (global_header));

	lseek (g->fd, old_position, SEEK_SET);
	gbl_unlock (g);

	if (strncmp (h->magic, m, 5) != 0) {
	return GBL_HDR_BADMAGIC;
	}
	if (h->format_version != GBL_FORMAT_VERSION) {
	return GBL_HDR_BADVERSION;
	}
	if (h->block_size != BLOCKLEN) {
	return GBL_HDR_BADBLOCKSIZE;
	}

	return GBL_HDR_OK;
	} /* gbl_read_header() */

	int gbl_update_tid(global_handle *g)
	{
	global_header h;

	if (gbl_read_header (g, &h) != GBL_HDR_OK) {
	return FALSE;
	}

	h.last_transaction_id = jnl_tran_id;

	return gbl_write_header (g, &h);
	} /* gbl_update_tid() */

int gbl_create(global_handle *g)	int gbl_create(global_handle *g)
{	{
Line 260 int gbl_create(global_handle *g)	Line 397 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);

return OK;	return OK;
}	} /* gbl_create() */

short gbl_open(global_handle *g, short action)	short gbl_open(global_handle *g, short action)
{	{
	int result;

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 279 short gbl_open(global_handle *g, short a	Line 422 short gbl_open(global_handle *g, short a

case EMFILE:	case EMFILE:
case ENFILE:	case ENFILE:
close_all_globals ();	gbl_close_all ();
continue;	continue;
}	}

Line 295 short gbl_open(global_handle *g, short a	Line 438 short gbl_open(global_handle *g, short a
}	}
else {	else {
g->opened = TRUE;	g->opened = TRUE;
	result = gbl_read_header (g, &g->header);

	if (result == GBL_HDR_OK) {
	g->opened = TRUE;
	}
	else {
	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 g->opened;	return g->opened;

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

global_handle gbl_handle(char key)	global_handle gbl_handle(char key)
{	{
Line 349 global_handle gbl_handle(char key)	Line 517 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;

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 357 global_handle gbl_handle(char key)	Line 527 global_handle gbl_handle(char key)
global_handles_head = g;	global_handles_head = g;

return g;	return g;
}	} /* gbl_handle() */


/* globals management */	/* globals management */
Line 439 void global_bltin (short action, char *k	Line 609 void global_bltin (short action, char *k
{	{

global_handle *g;	global_handle *g;

	unsigned long hdr_offset;

/* these must be static variables */	/* these must be static variables */

static short filedes; /* filedescr for global access */	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 */
/* static or dynamic */	/* static or dynamic */

static unsigned long blknbr; /* block number */	static unsigned long blknbr; /* block number */
// static unsigned long oldblk;
static unsigned long newblk;	static unsigned long newblk;
static unsigned long other;	static unsigned long other;
static long j1;	static long j1;
static long limit;	static long limit;
static short typ; /* block type */	static short typ; /* block type */
static long keyl, /* length of compacted key */	static long keyl; /* length of compacted key */
datal, /* length of data */	static long datal; /* length of data */
olddatal,	static long olddatal;
offset,	static long offset;
found,	static long found;
addr, /* address of key in 'block' */	static long addr; /* address of key in 'block' */
needed, /* new bytes needed to ins. stuff */	static long needed; /* new bytes needed to ins. stuff */
ret_to, /* return code */	static long ret_to; /* return code */
kill_again;	static long kill_again;
static char key1[256];	static char key1[256];
static char tmp1[256]; /* intermediate storage for op= */	static char tmp1[256]; /* intermediate storage for op= */
static char block[BLOCKLEN];	static char block[BLOCKLEN];
Line 475 void global_bltin (short action, char *k	Line 644 void global_bltin (short action, char *k

struct stat dinf; /* get modification date */	struct stat dinf; /* get modification date */

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

	hdr_offset = sizeof (global_header);

/* process optional limitations */	/* process optional limitations */
if (glvnflag.all && key[0] >= '%' && key[0] <= 'z') {	if (glvnflag.all && key[0] >= '%' && key[0] <= 'z') {

Line 561 void global_bltin (short action, char *k	Line 732 void global_bltin (short action, char *k


if (action == getnext) {	if (action == getnext) {

getnflag = TRUE;	getnflag = TRUE;
varnam[0] = EOL;	varnam[0] = EOL;

Line 851 reopen:	Line 1021 reopen:

errno = 0;	errno = 0;

lseek (g->fd, ROOT * BLOCKLEN, 0);	lseek (g->fd, hdr_offset + (ROOT * BLOCKLEN), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

if (errno == 0) break;	if (errno == 0) break;
Line 877 reopen:	Line 1047 reopen:

if (errno == 0) break;	if (errno == 0) break;

lseek (g->fd, (ROOT + 1L) * BLOCKLEN, 0);	lseek (g->fd, hdr_offset + ((ROOT + 1L) * BLOCKLEN), SEEK_SET);
panic ();	panic ();

}	}
Line 900 lock:	Line 1070 lock:

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 */

Line 909 tfast0:	Line 1080 tfast0:

tfast1:	tfast1:

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);


Line 931 tfast2:	Line 1102 tfast2:
j = UNSIGN (block[i++]); /* length of key - offset */	j = UNSIGN (block[i++]); /* length of key - offset */
k = UNSIGN (block[i++]); /* offset into previous entry */	k = UNSIGN (block[i++]); /* offset into previous entry */

#ifdef VERSNEW

stcpy0 (&key0[k], &block[i], j);
i += j;
j += k;

#else

j += k;	j += k;

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

#endif /* VERSNEW */

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

i += UNSIGN (block[i]);	i += UNSIGN (block[i]);
Line 978 tfast2:	Line 1139 tfast2:

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

Line 989 tfast2:	Line 1150 tfast2:
}	}
else {	else {

if (tryfast) {	if (g->fast_path > 0) {
tryfast = FALSE;	gbl_cache_miss (g);
goto tfast0;	goto tfast0;
}	}

Line 1020 tfast2:	Line 1181 tfast2:

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 1031 tfast2:	Line 1193 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, ROOT, 0);	lseek (g->fd, hdr_offset + ROOT, 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 */
Line 1064 k_again: /* entry point for repeated	Line 1226 k_again: /* entry point for repeated
traceblk[trx] = blknbr;	traceblk[trx] = blknbr;
traceadr[trx] = 0;	traceadr[trx] = 0;

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

typ = block[BTYP];	typ = block[BTYP];
Line 1098 k_again: /* entry point for repeated	Line 1260 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 1232 s10: {	Line 1395 s10: {

}	}

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	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 1319 s20:	Line 1482 s20:
}	}

stcpy0 (&block[++addr], data, (long) datal);	stcpy0 (&block[++addr], data, (long) datal);
lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

	gbl_update_tid (g);

break;	break;


Line 1351 s20:	Line 1517 s20:

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

Line 1434 s20:	Line 1600 s20:
goto quit;	goto quit;
} /* no next block */	} /* no next block */

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);
scandblk (block, &addr, &found);	scandblk (block, &addr, &found);

Line 1591 s20:	Line 1757 s20:
goto quit; /* no next block */	goto quit; /* no next block */
}	}

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
Line 1615 s20:	Line 1781 s20:
goto quit; /* no next block */	goto quit; /* no next block */
}	}

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
Line 1826 killo: /* entry from killone section	Line 1992 killo: /* entry from killone section
other = traceblk[--trx];	other = traceblk[--trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (g->fd, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

addr += UNSIGN (block[addr]);	addr += UNSIGN (block[addr]);
Line 1846 killo: /* entry from killone section	Line 2012 killo: /* entry from killone section

trx = trxsav;	trx = trxsav;

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
Line 1953 p_empty: /* entry if pointer block goes	Line 2119 p_empty: /* entry if pointer block goes

if (left) {	if (left) {

lseek (g->fd, (long) left * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) left * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block0, BLOCKLEN);	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, (long) left * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) left * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}

if (right) {	if (right) {

lseek (g->fd, (long) right * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) right * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block0, BLOCKLEN);	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, (long) right * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) right * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}
Line 1992 p_empty: /* entry if pointer block goes	Line 2158 p_empty: /* entry if pointer block goes
blknbr = traceblk[--trx];	blknbr = traceblk[--trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (g->fd, (long) (blknbr) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (blknbr) * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);
offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
Line 2005 p_empty: /* entry if pointer block goes	Line 2171 p_empty: /* entry if pointer block goes

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

lseek (g->fd, 0L, 0);	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 */
Line 2037 p_empty: /* entry if pointer block goes	Line 2203 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, (long) (blknbr) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (blknbr) * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	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 2085 p_empty: /* entry if pointer block goes	Line 2251 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, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);
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 2112 zinv:	Line 2278 zinv:
goto quit;	goto quit;
} /* no previous block */	} /* no previous block */

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

addr = UNSIGN (block[OFFS]) * 256 +	addr = UNSIGN (block[OFFS]) * 256 +
Line 2292 zinv:	Line 2458 zinv:
break; /* no next block */	break; /* no next block */
}	}

lseek (g->fd, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

addr = 0;	addr = 0;
Line 2408 quit:	Line 2574 quit:

/* clean things up */	/* clean things up */

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

return;	return;
Line 2439 splitd: /* split data block in two se	Line 2605 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, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

block[RLPTR] = right;	block[RLPTR] = right;
Line 2452 splitd: /* split data block in two se	Line 2618 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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block0, BLOCKLEN);	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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}
Line 2485 splitd: /* split data block in two se	Line 2651 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, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

block[LLPTR] = left;	block[LLPTR] = left;
Line 2498 splitd: /* split data block in two se	Line 2664 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 2611 splitd: /* split data block in two se	Line 2777 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, (long) (newblk) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (newblk) * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block0, BLOCKLEN);	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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}
Line 2651 splitd: /* split data block in two se	Line 2817 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, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);
stcpy0 (block, block0, (long) BLOCKLEN);	stcpy0 (block, block0, (long) BLOCKLEN);

Line 2659 splitd: /* split data block in two se	Line 2825 splitd: /* split data block in two se
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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (g->fd, block0, BLOCKLEN);	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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
write (g->fd, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}
Line 2699 spltex:	Line 2865 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 2708 static void splitp (short filedes, char	Line 2874 static void splitp (short filedes, char
unsigned long other;	unsigned long other;
register int i, j;	register int i, j;

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

	hdr_offset = sizeof (global_header);

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

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

Line 2743 static void splitp (short filedes, char	Line 2913 static void splitp (short filedes, char
block0[NRBLK + 2] = i % 256;	block0[NRBLK + 2] = i % 256;
block0[BTYP] = POINTER;	block0[BTYP] = POINTER;

lseek (filedes, ROOT, 0);	lseek (g->fd, hdr_offset + ROOT, SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

/* shift trace_stack */	/* shift trace_stack */
j = trx++;	j = trx++;
Line 2761 static void splitp (short filedes, char	Line 2931 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->fd, &newblk); /* get a new block */

}	}

Line 2815 static void splitp (short filedes, char	Line 2985 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, (long) (newblk) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (newblk) * (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (g->fd, 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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (filedes, block0, BLOCKLEN);	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 (filedes, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}

Line 2858 static void splitp (short filedes, char	Line 3028 static void splitp (short filedes, char
(*addr) -= limit;	(*addr) -= limit;
(*offs) -= limit;	(*offs) -= limit;

lseek (filedes, (long) (blknbr) (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (blknbr) (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block, BLOCKLEN);	write (g->fd, 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, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
read (filedes, block0, BLOCKLEN);	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 (filedes, (long) other * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) other * (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (g->fd, block0, BLOCKLEN);

}	}

Line 2892 static void splitp (short filedes, char	Line 3062 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 */

if (--trx < 0) break;	if (--trx < 0) break;
Line 2907 static void update (short filedes, char	Line 3080 static void update (short filedes, char
blknbr = traceblk[trx];	blknbr = traceblk[trx];
addr = traceadr[trx];	addr = traceadr[trx];

lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (filedes, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

{	{
long oldkeyl;	long oldkeyl;
Line 2935 static void update (short filedes, char	Line 3108 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 2958 static void update (short filedes, char	Line 3131 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, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

}	}

lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) blknbr * (long) (BLOCKLEN)), SEEK_SET);
read (filedes, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

}	}

Line 2979 static void update (short filedes, char	Line 3152 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 2988 static void insert (int filedes, char *i	Line 3161 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, (long) (blk) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (blk) * (long) (BLOCKLEN)), SEEK_SET);
read (filedes, block, BLOCKLEN);	read (g->fd, block, BLOCKLEN);

offset = UNSIGN (block[OFFS]) * 256 +	offset = UNSIGN (block[OFFS]) * 256 +
UNSIGN (block[OFFS + 1]);	UNSIGN (block[OFFS + 1]);
Line 3006 static void insert (int filedes, char *i	Line 3182 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 3030 static void insert (int filedes, char *i	Line 3206 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, (long) (blk) * (long) (BLOCKLEN), 0);	lseek (g->fd, hdr_offset + ((long) (blk) * (long) (BLOCKLEN)), SEEK_SET);
write (filedes, block, BLOCKLEN);	write (g->fd, block, BLOCKLEN);

trx = trxsav;	trx = trxsav;

Line 3050 static void b_free (short filedes, unsig	Line 3226 static void b_free (short filedes, unsig
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, (long) (blknbr) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (blknbr) * BLOCKLEN), SEEK_SET);
read (filedes, block0, BLOCKLEN);	read (filedes, block0, BLOCKLEN);

block0[BTYP] = EMPTY;	block0[BTYP] = EMPTY;

lseek (filedes, (long) (blknbr) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (blknbr) * BLOCKLEN), SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (filedes, block0, BLOCKLEN);

/* do we have a list of free blocks? */	/* do we have a list of free blocks? */
lseek (filedes, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
read (filedes, block0, BLOCKLEN);	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, (long) free * (long) BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);
read (filedes, block0, BLOCKLEN);	read (filedes, block0, BLOCKLEN);

other = UNSIGN (block0[RLPTR]) * 65536 +	other = UNSIGN (block0[RLPTR]) * 65536 +
Line 3101 static void b_free (short filedes, unsig	Line 3280 static void b_free (short filedes, unsig
block0[RLPTR + 1] = other % 65536 / 256;	block0[RLPTR + 1] = other % 65536 / 256;
block0[RLPTR + 2] = other % 256;	block0[RLPTR + 2] = other % 256;

lseek (filedes, (long) free * (long) BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);
write (filedes, block0, BLOCKLEN);	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 3122 static void b_free (short filedes, unsig	Line 3301 static void b_free (short filedes, unsig
getnewblk (filedes, &free);	getnewblk (filedes, &free);

/* set FBLK free blocks pointer */	/* set FBLK free blocks pointer */
lseek (filedes, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
read (filedes, block0, BLOCKLEN);	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, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
write (filedes, block0, BLOCKLEN);	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 3145 static void b_free (short filedes, unsig	Line 3324 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, (long) free * (long) BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) free * (long) BLOCKLEN), SEEK_SET);
write (filedes, block0, BLOCKLEN);	write (filedes, block0, BLOCKLEN);

return;	return;
Line 3272 static void getnewblk (int filedes, unsi	Line 3451 static void getnewblk (int filedes, unsi
unsigned long freeblks, no_of_blks;	unsigned long freeblks, no_of_blks;
long other;	long other;
long offset;	long offset;
	long hdr_offset;

lseek (filedes, ROOT, 0);	hdr_offset = sizeof (global_header);

	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
read (filedes, nblock, BLOCKLEN);	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]);
Line 3281 static void getnewblk (int filedes, unsi	Line 3463 static void getnewblk (int filedes, unsi

if (freeblks) {	if (freeblks) {

lseek (filedes, (long) (freeblks) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (freeblks) * BLOCKLEN), SEEK_SET);
read (filedes, nblock, BLOCKLEN);	read (filedes, nblock, BLOCKLEN);

offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]);	offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]);
Line 3294 static void getnewblk (int filedes, unsi	Line 3476 static void getnewblk (int filedes, unsi
/* update RL-block, if any */	/* update RL-block, if any */
if (other) {	if (other) {

lseek (filedes, (long) (other) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (other) * BLOCKLEN), SEEK_SET);
read (filedes, nblock, BLOCKLEN);	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, (long) (other) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (other) * BLOCKLEN), SEEK_SET);
write (filedes, nblock, BLOCKLEN);	write (filedes, nblock, BLOCKLEN);

}	}

/* update ROOT block */	/* update ROOT block */
lseek (filedes, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
read (filedes, nblock, BLOCKLEN);	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, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
write (filedes, nblock, BLOCKLEN);	write (filedes, nblock, BLOCKLEN);

return;	return;
Line 3328 static void getnewblk (int filedes, unsi	Line 3510 static void getnewblk (int filedes, unsi
nblock[OFFS] = offset / 256;	nblock[OFFS] = offset / 256;
nblock[OFFS + 1] = offset % 256;	nblock[OFFS + 1] = offset % 256;

lseek (filedes, (long) (freeblks) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (freeblks) * BLOCKLEN), SEEK_SET);
write (filedes, nblock, BLOCKLEN);	write (filedes, nblock, BLOCKLEN);

return;	return;
Line 3341 static void getnewblk (int filedes, unsi	Line 3523 static void getnewblk (int filedes, unsi
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, ROOT, 0);	lseek (filedes, hdr_offset + ROOT, SEEK_SET);
write (filedes, nblock, BLOCKLEN);	write (filedes, nblock, BLOCKLEN);

*blknbr = no_of_blks;	*blknbr = no_of_blks;
Line 3350 static void getnewblk (int filedes, unsi	Line 3532 static void getnewblk (int filedes, unsi

errno = 0;	errno = 0;

lseek (filedes, (long) (no_of_blks) * BLOCKLEN, 0);	lseek (filedes, hdr_offset + ((long) (no_of_blks) * BLOCKLEN), SEEK_SET);
write (filedes, nblock, BLOCKLEN);	write (filedes, nblock, BLOCKLEN);

if (errno == 0) break;	if (errno == 0) break;
Line 3529 short g_numeric (char *str)	Line 3711 short g_numeric (char *str)

} /* end g_numeric() */	} /* end g_numeric() */


	/* DEPRECATED: use gbl_close_all() instead */
void close_all_globals (void)	void close_all_globals (void)
{	{
register int i;	gbl_close_all ();

for (i = 0; i < NO_GLOBLS; i++) {

if (oldfil[i][0] != NUL) {

close (olddes[i]);

usage[i] = 0;
olddes[i] = 0;
oldfil[i][0] = NUL;

}

}

return;	return;

} /* end close_all_globals() */	} /* end close_all_globals() */

static void panic (void)	static void panic (void)
Line 3575 static void panic (void)	Line 3744 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%-12s%-20s%-10s%s\r\n", "GLOBAL", "USECT", "SLOW PTHCT", "AGE", "LAST BLK", "FILE");
printf ("%-20s%-10s%-20s%-10s%s\r\n", "======", "=====", "===", "========", "====");	printf ("%-20s%-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%-10d%-12d%-20d%-10d%s\r\n",
}	g->global_name,
	g->use_count,
	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);
}	}

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.8
changed lines
	Added in v.1.13