X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=complete_pread.cpp;fp=complete_pread.cpp;h=49136747b94fb680a8fe4285771f75c6a98e018a;hb=acce03bb32917e21f2d1d49c5a460d3cd2f72a11;hp=0000000000000000000000000000000000000000;hpb=2983b424187a853bcde96a8feff6ef0ae48db7d5;p=plocate

diff --git a/complete_pread.cpp b/complete_pread.cpp
new file mode 100644
index 0000000..4913674
--- /dev/null
+++ b/complete_pread.cpp
@@ -0,0 +1,21 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+void complete_pread(int fd, void *ptr, size_t len, off_t offset)
+{
+	while (len > 0) {
+		ssize_t ret = pread(fd, ptr, len, offset);
+		if (ret == -1 && errno == EINTR) {
+			continue;
+		}
+		if (ret <= 0) {
+			perror("pread");
+			exit(1);
+		}
+		ptr = reinterpret_cast<char *>(ptr) + ret;
+		len -= ret;
+		offset -= ret;
+	}
+}