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Fix for FreeBSD LastRead pointers

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This commit is contained in:
Michiel Broek 2002-05-26 13:34:47 +00:00
parent a1ae304588
commit 0a70980608
1 changed files with 28 additions and 18 deletions
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46
lib/jammsg.c
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@ -591,7 +591,7 @@ int JAM_Open(char *Msgbase)
void JAM_Pack(void)
{
int fdnHdr, fdnJdx, fdnJdt, fdnJlr;
int ToRead, Readed;
int ToRead, Readed, i, count;
char *File, *New, *Subfield, *Temp;
JAMIDXREC jamIdx;
unsigned long NewNumber = 0, RefNumber = 0, Written = 0;
@ -605,8 +605,14 @@ void JAM_Pack(void)
fdnJdt = open(File, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
sprintf(File, "%s%s", BaseName, ".$dx");
fdnJdx = open(File, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
sprintf(File, "%s%s", BaseName, ".$lr");
fdnJlr = open(File, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
sprintf(File, "%s%s", BaseName, ".$lr");
fdnJlr = open(File, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
/*
* Get the number of LastRead records, this number is needed to prevent
* that FreeBSD makes garbage of the LastRead pointers for some reason.
*/
count = lseek(fdJlr, 0, SEEK_END) / sizeof(lastread);
if (fdnHdr != -1 && fdnJdt != -1 && fdnJdx != -1 && fdnJlr != -1) {
lseek(fdHdr, 0L, SEEK_SET);
@ -642,21 +648,23 @@ void JAM_Pack(void)
Written++;
lseek(fdJlr, 0, SEEK_SET);
while ((read(fdJlr, &LR, sizeof(lastread)) == sizeof(lastread))) {
/*
* Test if one of the lastread pointer is the current
* old message number.
*/
if ((LR.LastReadMsg == jamHdr.MsgNum) || (LR.HighReadMsg == jamHdr.MsgNum)) {
for (i = 0; i < count; i++) {
if ((read(fdJlr, &LR, sizeof(lastread)) == sizeof(lastread))) {
/*
* Adjust the matching numbers
* Test if one of the lastread pointer is the current
* old message number.
*/
if (LR.LastReadMsg == jamHdr.MsgNum)
LR.LastReadMsg = NewNumber;
if (LR.HighReadMsg == jamHdr.MsgNum)
LR.HighReadMsg = NewNumber;
lseek(fdJlr, - sizeof(lastread), SEEK_CUR);
write(fdJlr, &LR, sizeof(lastread));
if ((LR.LastReadMsg == jamHdr.MsgNum) || (LR.HighReadMsg == jamHdr.MsgNum)) {
/*
* Adjust the matching numbers
*/
if (LR.LastReadMsg == jamHdr.MsgNum)
LR.LastReadMsg = NewNumber;
if (LR.HighReadMsg == jamHdr.MsgNum)
LR.HighReadMsg = NewNumber;
lseek(fdJlr, - sizeof(lastread), SEEK_CUR);
write(fdJlr, &LR, sizeof(lastread));
}
}
}
jamHdr.MsgNum = NewNumber;
@ -704,8 +712,10 @@ void JAM_Pack(void)
* Now copy the lastread file
*/
lseek(fdJlr, 0, SEEK_SET);
while (read(fdJlr, &LR, sizeof(lastread)) == sizeof(lastread)) {
write(fdnJlr, &LR, sizeof(lastread));
for (i = 0; i < count; i++) {
if (read(fdJlr, &LR, sizeof(lastread)) == sizeof(lastread)) {
write(fdnJlr, &LR, sizeof(lastread));
}
}
/*