return len;
}
+
+static char *wf_writeBuf;
+static size_t wf_writeBufSize;
+static size_t wf_writeBufCnt;
+
+int flush_write_file(int f)
+{
+ int ret = 0;
+ char *bp = wf_writeBuf;
+
+ while (wf_writeBufCnt > 0) {
+ if ((ret = write(f, bp, wf_writeBufCnt)) < 0) {
+ if (errno == EINTR)
+ continue;
+ return ret;
+ }
+ wf_writeBufCnt -= ret;
+ bp += ret;
+ }
+ return ret;
+}
+
/*
* write_file does not allow incomplete writes. It loops internally
* until len bytes are written or errno is set.
{
int ret = 0;
- while (len>0) {
+ while (len > 0) {
int r1;
if (sparse_files) {
int len1 = MIN(len, SPARSE_WRITE_SIZE);
r1 = write_sparse(f, buf, len1);
} else {
- r1 = write(f, buf, len);
+ if (!wf_writeBuf) {
+ wf_writeBufSize = MAX_MAP_SIZE;
+ wf_writeBufCnt = 0;
+ wf_writeBuf = new_array(char, MAX_MAP_SIZE);
+ if (!wf_writeBuf)
+ out_of_memory("write_file");
+ }
+ r1 = MIN(len, wf_writeBufSize - wf_writeBufCnt);
+ if (r1) {
+ memcpy(wf_writeBuf + wf_writeBufCnt, buf, r1);
+ wf_writeBufCnt += r1;
+ }
+ if (wf_writeBufCnt == wf_writeBufSize) {
+ if (flush_write_file(f) < 0)
+ return -1;
+ if (!r1 && len)
+ continue;
+ }
}
if (r1 <= 0) {
if (ret > 0) return ret;