diff options
Diffstat (limited to 'source4/lib/tdb/common/io.c')
| -rw-r--r-- | source4/lib/tdb/common/io.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/source4/lib/tdb/common/io.c b/source4/lib/tdb/common/io.c index 86001dfdae..3b7e712cfe 100644 --- a/source4/lib/tdb/common/io.c +++ b/source4/lib/tdb/common/io.c @@ -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) { - /* 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))); - return TDB_ERRCODE(TDB_ERR_IO, -1); + } 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))); + 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; } |