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Bug of fseek and wrong setting of position.

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This commit is contained in:
carl 2019-03-25 02:20:50 +08:00
parent 41fd51eeea
commit 78899705d5
2 changed files with 12 additions and 6 deletions
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2
modules/src/object/rd.c
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@ -77,7 +77,7 @@ int rd_fdopen(FILE* fd)
for (i = 0; i < NPARTS; i++) outseek[i] = 0; for (i = 0; i < NPARTS; i++) outseek[i] = 0;
offcnt = 0; offcnt = 0;
rd_base = fseek(fd, 0L, SEEK_CUR); rd_base = ftell(fd);
if (rd_base < 0) { if (rd_base < 0) {
return 0; return 0;
} }

16
modules/src/object/wr.c
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@ -38,7 +38,8 @@ __wr_flush(struct fil *ptr)
#ifdef OUTSEEK #ifdef OUTSEEK
/* seek to correct position even if we aren't going to write now */ /* seek to correct position even if we aren't going to write now */
if (currpos != ptr->currpos) { if (currpos != ptr->currpos) {
currpos = fseek(ptr->fd, ptr->currpos, SEEK_SET); fseek(ptr->fd, ptr->currpos, SEEK_SET);
currpos = ptr->currpos;
} }
#endif #endif
if (ptr->pnow > ptr->pbegin) { if (ptr->pnow > ptr->pbegin) {
@ -129,7 +130,8 @@ static void BEGINSEEK(int p, long o)
ptr->fd = outfile; ptr->fd = outfile;
ptr->currpos = o; ptr->currpos = o;
#else #else
ptr->currpos = fseek(ptr->fd, o, SEEK_SET); fseek(ptr->fd, o, SEEK_SET);
ptr->currpos = o;
#endif #endif
if (p >= PARTRELO) o = 0; /* no attempt to align writes if (p >= PARTRELO) o = 0; /* no attempt to align writes
for the time being */ for the time being */
@ -259,8 +261,11 @@ wr_outsect(int s)
if (s != sectionnr && s >= (SECTCNT-1) && sectionnr >= (SECTCNT-1)) { if (s != sectionnr && s >= (SECTCNT-1) && sectionnr >= (SECTCNT-1)) {
#ifdef OUTSEEK #ifdef OUTSEEK
if (currpos != ptr->currpos) if (currpos != ptr->currpos)
currpos = fseek(ptr->fd, ptr->currpos, SEEK_SET); {
fseek(ptr->fd, ptr->currpos, SEEK_SET);
currpos -> ptr->currpos;
}
#endif #endif
wr_bytes(ptr->fd, ptr->pbegin, (long)(ptr->pnow - ptr->pbegin)); wr_bytes(ptr->fd, ptr->pbegin, (long)(ptr->pnow - ptr->pbegin));
ptr->currpos += ptr->pnow - ptr->pbegin; ptr->currpos += ptr->pnow - ptr->pbegin;
@ -269,7 +274,8 @@ wr_outsect(int s)
#endif #endif
offset[sectionnr] = ptr->currpos; offset[sectionnr] = ptr->currpos;
if (offset[s] != ptr->currpos) { if (offset[s] != ptr->currpos) {
ptr->currpos = fseek(ptr->fd, offset[s], SEEK_SET); fseek(ptr->fd, offset[s], SEEK_SET);
ptr->currpos = offset[s];
#ifdef OUTSEEK #ifdef OUTSEEK
currpos = ptr->currpos; currpos = ptr->currpos;
#endif #endif