[RFC -next 07/10] fs: Add sendfile2 which accepts a flags argument
From: Joe Damato <hidden>
Date: 2025-03-19 00:15:48
Also in:
linux-api, linux-arch, linux-fsdevel, linux-kselftest, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Add sendfile2 which is similar to sendfile64, but takes a flags argument. Signed-off-by: Joe Damato <redacted> --- fs/read_write.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/fs/read_write.c b/fs/read_write.c
index 03d2a93c3d1b..057e5f37645d 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c@@ -1424,6 +1424,23 @@ SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd, loff_t __user *, offset, si return do_sendfile(out_fd, in_fd, NULL, count, 0, 0); } +SYSCALL_DEFINE5(sendfile2, int, out_fd, int, in_fd, loff_t __user *, offset, size_t, count, int, flags) +{ + loff_t pos; + ssize_t ret; + + if (offset) { + if (unlikely(copy_from_user(&pos, offset, sizeof(loff_t)))) + return -EFAULT; + ret = do_sendfile(out_fd, in_fd, &pos, count, 0, flags); + if (unlikely(put_user(pos, offset))) + return -EFAULT; + return ret; + } + + return do_sendfile(out_fd, in_fd, NULL, count, 0, flags); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE4(sendfile, int, out_fd, int, in_fd, compat_off_t __user *, offset, compat_size_t, count)
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2.43.0