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r24738: Fix one more use of pwrite in tdb code in the spirit of r23972 and r23977.

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Michael
(This used to be commit 7b2cabea55cebb98e0fcee17066a0871667cd83f)
This commit is contained in:
Michael Adam 2007-08-28 14:25:46 +00:00 committed by Gerald (Jerry) Carter
parent 9cca9ddc79
commit 8277256cee
1 changed files with 25 additions and 6 deletions
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25
source4/lib/tdb/common/io.c
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@ -88,12 +88,31 @@ static int tdb_write(struct tdb_context *tdb, tdb_off_t off,
if (tdb->map_ptr) {
memcpy(off + (char *)tdb->map_ptr, buf, len);
} else if (pwrite(tdb->fd, buf, len, off) != (ssize_t)len) {
} else {
ssize_t written = pwrite(tdb->fd, buf, len, off);
if ((written != (ssize_t)len) && (written != -1)) {
/* try once more */
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_write: wrote only "
"%d of %d bytes at %d, trying once more\n",
written, len, off));
errno = ENOSPC;
written = pwrite(tdb->fd, (void *)((char *)buf+written),
len-written,
off+written);
}
if (written == -1) {
/* Ensure ecode is set for log fn. */
tdb->ecode = TDB_ERR_IO;
TDB_LOG((tdb, TDB_DEBUG_FATAL,"tdb_write failed at %d len=%d (%s)\n",
off, len, strerror(errno)));
TDB_LOG((tdb, TDB_DEBUG_FATAL,"tdb_write failed at %d "
"len=%d (%s)\n", off, len, strerror(errno)));
return TDB_ERRCODE(TDB_ERR_IO, -1);
} else if (written != (ssize_t)len) {
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_write: failed to "
"write %d bytes at %d in two attempts\n",
len, off));
errno = ENOSPC;
return TDB_ERRCODE(TDB_ERR_IO, -1);
}
}
return 0;
}