#include <sys/uio.h>
extern ssize_t __syscall_writev __P ((int, const struct iovec *, int));
+static ssize_t __atomic_writev_replacement __P ((int, const struct iovec *,
+ int));
+
/* Not all versions of the kernel support the large number of records. */
#ifndef UIO_FASTIOV
/* We should deal with kernel which have a smaller UIO_FASTIOV as well
as a very big count. */
ssize_t
-writev (fd, vector, count)
+__writev (fd, vector, count)
int fd;
const struct iovec *vector;
int count;
bytes_written = __syscall_writev (fd, vector, count);
- if (bytes_written < 0 && errno == EINVAL && count > UIO_FASTIOV)
- {
- int i;
-
- /* Restore the old error value as if nothing happened. */
- __set_errno (errno_saved);
+ if (bytes_written >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
+ return bytes_written;
- bytes_written = 0;
- for (i = 0; i < count; i += UIO_FASTIOV)
- {
- ssize_t bytes = __syscall_writev (fd, vector + i,
- MIN (count - i, UIO_FASTIOV));
+ /* Restore the old error value as if nothing happened. */
+ __set_errno (errno_saved);
- if (bytes < 0)
- return bytes_written > 0 ? bytes_written : bytes;
- }
- }
-
- return bytes_written;
+ return __atomic_writev_replacement (fd, vector, count);
}
+weak_alias (__writev, writev)
+
+#define __writev static __atomic_writev_replacement
+#include <sysdeps/posix/writev.c>