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Diffstat (limited to 'sysdeps/unix/sysv/linux/readv.c')
-rw-r--r--sysdeps/unix/sysv/linux/readv.c32
1 files changed, 12 insertions, 20 deletions
diff --git a/sysdeps/unix/sysv/linux/readv.c b/sysdeps/unix/sysv/linux/readv.c
index c8ff55ab45..2c215ce920 100644
--- a/sysdeps/unix/sysv/linux/readv.c
+++ b/sysdeps/unix/sysv/linux/readv.c
@@ -23,6 +23,8 @@
#include <sys/uio.h>
extern ssize_t __syscall_readv __P ((int, __const struct iovec *, int));
+static ssize_t __atomic_readv_replacement __P ((int, __const struct iovec *,
+ int));
/* Not all versions of the kernel support the large number of records. */
@@ -34,7 +36,7 @@ extern ssize_t __syscall_readv __P ((int, __const struct iovec *, int));
/* We should deal with kernel which have a smaller UIO_FASTIOV as well
as a very big count. */
ssize_t
-readv (fd, vector, count)
+__readv (fd, vector, count)
int fd;
const struct iovec *vector;
int count;
@@ -44,25 +46,15 @@ readv (fd, vector, count)
bytes_read = __syscall_readv (fd, vector, count);
- if (bytes_read < 0 && errno == EINVAL && count > UIO_FASTIOV)
- {
- int i;
+ if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
+ return bytes_read;
- /* Restore the old error value as if nothing happened. */
- __set_errno (errno_saved);
+ /* Restore the old error value as if nothing happened. */
+ __set_errno (errno_saved);
- bytes_read = 0;
- for (i = 0; i < count; i += UIO_FASTIOV)
- {
- ssize_t bytes = __syscall_readv (fd, vector + i,
- MIN (count - i, UIO_FASTIOV));
-
- if (bytes < 0)
- return bytes;
-
- bytes_read += bytes;
- }
- }
-
- return bytes_read;
+ return __atomic_readv_replacement (fd, vector, count);
}
+weak_alias (__readv, readv)
+
+#define __readv static __atomic_readv_replacement
+#include <sysdeps/posix/readv.c>