Import sources from 2011-03-30 iso image

1 files changed, 30 insertions, 0 deletions

diff --git a/sys/src/ape/lib/bsd/readv.c b/sys/src/ape/lib/bsd/readv.c
new file mode 100755
index 000000000..91a7157d0
--- /dev/null
+++ b/sys/src/ape/lib/bsd/readv.c
@@ -0,0 +1,30 @@
+#include <unistd.h>
+#include <string.h>
+#include <sys/uio.h>
+
+int
+readv(int fd, struct iovec *v, int ent)
+{
+	int x, i, n, len;
+	char *t;
+	char buf[10*1024];
+
+	for(len = i = 0; i < ent; i++)
+		len += v[i].iov_len;
+	if(len > sizeof(buf))
+		len = sizeof(buf);
+
+	len = read(fd, buf, len);
+	if(len <= 0)
+		return len;
+
+	for(n = i = 0; n < len && i < ent; i++){
+		x = len - n;
+		if(x > v[i].iov_len)
+			x = v[i].iov_len;
+		memmove(v[i].iov_base, buf + n, x);
+		n += x;
+	}
+
+	return len;
+}