#include "cache.h"
+/*
+ * Some cases use stdio, but want to flush after the write
+ * to get error handling (and to get better interactive
+ * behaviour - not buffering excessively).
+ *
+ * Of course, if the flush happened within the write itself,
+ * we've already lost the error code, and cannot report it any
+ * more. So we just ignore that case instead (and hope we get
+ * the right error code on the flush).
+ *
+ * If the file handle is stdout, and stdout is a file, then skip the
+ * flush entirely since it's not needed.
+ */
+void maybe_flush_or_die(FILE *f, const char *desc)
+{
+ static int skip_stdout_flush = -1;
+ struct stat st;
+ char *cp;
+
+ if (f == stdout) {
+ if (skip_stdout_flush < 0) {
+ cp = getenv("GIT_FLUSH");
+ if (cp)
+ skip_stdout_flush = (atoi(cp) == 0);
+ else if ((fstat(fileno(stdout), &st) == 0) &&
+ S_ISREG(st.st_mode))
+ skip_stdout_flush = 1;
+ else
+ skip_stdout_flush = 0;
+ }
+ if (skip_stdout_flush && !ferror(f))
+ return;
+ }
+ if (fflush(f)) {
+ if (errno == EPIPE)
+ exit(0);
+ die("write failure on %s: %s", desc, strerror(errno));
+ }
+}
+
int read_in_full(int fd, void *buf, size_t count)
{
char *p = buf;