diff mbox series

[RFC,-next,07/10] fs: Add sendfile2 which accepts a flags argument

Message ID 20250319001521.53249-8-jdamato@fastly.com (mailing list archive)
State RFC
Headers show
Series Add ZC notifications to splice and sendfile | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/checkpatch warning WARNING: line length of 103 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 9 this patch: 9
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato March 19, 2025, 12:15 a.m. UTC
Add sendfile2 which is similar to sendfile64, but takes a flags
argument.

Signed-off-by: Joe Damato <jdamato@fastly.com>
---
 fs/read_write.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
diff mbox series

Patch

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)