Syscall sendfile

sys/compat/linux/arch/amd64/linux_syscall.h

@@ -1,9 +1,9 @@
-/* $NetBSD: linux_syscall.h,v 1.87 2025/11/10 15:41:57 christos Exp $ */
+/* $NetBSD$ */
 
 /*
  * System call numbers.
  *
- * DO NOT EDIT-- this file is automatically generated.
+ * DO NOT EDIT-- this file is generated by makesyscalls.sh
  * created from	NetBSD: syscalls.master,v 1.78 2025/11/10 15:41:38 christos Exp
  */
 
@@ -135,6 +135,9 @@
 /* syscall: "getpid" ret: "pid_t" args: */
 #define	LINUX_SYS_getpid	39
 
+/* syscall: "sendfile" ret: "ssize_t" args: "int" "int" "off_t *" "size_t" */
+#define	LINUX_SYS_sendfile	40
+
 /* syscall: "socket" ret: "int" args: "int" "int" "int" */
 #define	LINUX_SYS_socket	41
 

sys/compat/linux/arch/amd64/linux_syscallargs.h

@@ -1,9 +1,9 @@
-/* $NetBSD: linux_syscallargs.h,v 1.87 2025/11/10 15:41:57 christos Exp $ */
+/* $NetBSD$ */
 
 /*
  * System call argument lists.
  *
- * DO NOT EDIT-- this file is automatically generated.
+ * DO NOT EDIT-- this file is generated by makesyscalls.sh
  * created from	NetBSD: syscalls.master,v 1.78 2025/11/10 15:41:38 christos Exp
  */
 
@@ -186,6 +186,14 @@ check_syscall_args(linux_sys_alarm)
 
 struct compat_50_sys_setitimer_args;
 
+struct linux_sys_sendfile_args {
+	syscallarg(int) out_fd;
+	syscallarg(int) in_fd;
+	syscallarg(off_t *) offset;
+	syscallarg(size_t) count;
+};
+check_syscall_args(linux_sys_sendfile)
+
 struct linux_sys_socket_args {
 	syscallarg(int) domain;
 	syscallarg(int) type;
@@ -1425,6 +1433,8 @@ int	compat_50_sys_setitimer(struct lwp *, const struct compat_50_sys_setitimer_a
 
 int	sys_getpid(struct lwp *, const void *, register_t *);
 
+int	linux_sys_sendfile(struct lwp *, const struct linux_sys_sendfile_args *, register_t *);
+
 int	linux_sys_socket(struct lwp *, const struct linux_sys_socket_args *, register_t *);
 
 int	linux_sys_connect(struct lwp *, const struct linux_sys_connect_args *, register_t *);

sys/compat/linux/arch/amd64/linux_syscalls.c

@@ -1,14 +1,14 @@
-/* $NetBSD: linux_syscalls.c,v 1.87 2025/11/10 15:41:57 christos Exp $ */
+/* $NetBSD$ */
 
 /*
  * System call names.
  *
- * DO NOT EDIT-- this file is automatically generated.
+ * DO NOT EDIT-- this file is generated by makesyscalls.sh
  * created from	NetBSD: syscalls.master,v 1.78 2025/11/10 15:41:38 christos Exp
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_syscalls.c,v 1.87 2025/11/10 15:41:57 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD$");
 
 #if defined(_KERNEL_OPT)
 #if defined(_KERNEL_OPT)
@@ -89,7 +89,7 @@ const char *const linux_syscallnames[] = {
 	/*  37 */	"alarm",
 	/*  38 */	"setitimer",
 	/*  39 */	"getpid",
-	/*  40 */	"#40 (unimplemented sendfile)",
+	/*  40 */	"sendfile",
 	/*  41 */	"socket",
 	/*  42 */	"connect",
 	/*  43 */	"oaccept",
@@ -633,7 +633,7 @@ const char *const altlinux_syscallnames[] = {
 	/*  37 */	NULL, /* alarm */
 	/*  38 */	NULL, /* setitimer */
 	/*  39 */	NULL, /* getpid */
-	/*  40 */	NULL, /* unimplemented sendfile */
+	/*  40 */	NULL, /* sendfile */
 	/*  41 */	NULL, /* socket */
 	/*  42 */	NULL, /* connect */
 	/*  43 */	"accept",

sys/compat/linux/arch/amd64/linux_sysent.c

@@ -1,14 +1,14 @@
-/* $NetBSD: linux_sysent.c,v 1.87 2025/11/10 15:41:57 christos Exp $ */
+/* $NetBSD$ */
 
 /*
  * System call switch table.
  *
- * DO NOT EDIT-- this file is automatically generated.
+ * DO NOT EDIT-- this file is generated by makesyscalls.sh
  * created from	NetBSD: syscalls.master,v 1.78 2025/11/10 15:41:38 christos Exp
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_sysent.c,v 1.87 2025/11/10 15:41:57 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD$");
 
 #if defined(_KERNEL_OPT)
 #include "opt_sysv.h"
@@ -241,8 +241,10 @@ struct sysent linux_sysent[] = {
 		.sy_call = (sy_call_t *)sys_getpid
 	},		/* 39 = getpid */
 	{
-		.sy_call = linux_sys_nosys,
-	},		/* 40 = filler */
+		ns(struct linux_sys_sendfile_args),
+		.sy_flags = SYCALL_ARG_PTR,
+		.sy_call = (sy_call_t *)linux_sys_sendfile
+	},		/* 40 = sendfile */
 	{
 		ns(struct linux_sys_socket_args),
 		.sy_call = (sy_call_t *)linux_sys_socket

sys/compat/linux/arch/amd64/linux_systrace_args.c

@@ -1,9 +1,9 @@
-/* $NetBSD: linux_systrace_args.c,v 1.31 2025/11/10 15:41:57 christos Exp $ */
+/* $NetBSD$ */
 
 /*
  * System call argument to DTrace register array conversion.
  *
- * DO NOT EDIT-- this file is automatically generated.
+ * DO NOT EDIT-- this file is generated by makesyscalls.sh
  * This file is part of the DTrace syscall provider.
  */
 
@@ -351,6 +351,16 @@ systrace_args(register_t sysnum, const void *params, uintptr_t *uarg, size_t *n_
 		*n_args = 0;
 		break;
 	}
+	/* linux_sys_sendfile */
+	case 40: {
+		const struct linux_sys_sendfile_args *p = params;
+		iarg[0] = SCARG(p, out_fd); /* int */
+		iarg[1] = SCARG(p, in_fd); /* int */
+		uarg[2] = (intptr_t) SCARG(p, offset); /* off_t * */
+		uarg[3] = SCARG(p, count); /* size_t */
+		*n_args = 4;
+		break;
+	}
 	/* linux_sys_socket */
 	case 41: {
 		const struct linux_sys_socket_args *p = params;
@@ -2780,6 +2790,25 @@ systrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)
 	/* sys_getpid */
 	case 39:
 		break;
+	/* linux_sys_sendfile */
+	case 40:
+		switch(ndx) {
+		case 0:
+			p = "int";
+			break;
+		case 1:
+			p = "int";
+			break;
+		case 2:
+			p = "off_t *";
+			break;
+		case 3:
+			p = "size_t";
+			break;
+		default:
+			break;
+		};
+		break;
 	/* linux_sys_socket */
 	case 41:
 		switch(ndx) {
@@ -6113,6 +6142,11 @@ systrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)
 		break;
 	/* sys_getpid */
 	case 39:
+	/* linux_sys_sendfile */
+	case 40:
+		if (ndx == 0 || ndx == 1)
+			p = "ssize_t";
+		break;
 	/* linux_sys_socket */
 	case 41:
 		if (ndx == 0 || ndx == 1)

sys/compat/linux/arch/amd64/syscalls.master

@@ -145,7 +145,8 @@
 			    struct itimerval50 *itv, \
 			    struct itimerval50 *oitv); }
 39	STD		{ pid_t|sys||getpid(void); }
-40	UNIMPL		sendfile
+40	STD 	{ ssize_t|linux_sys||sendfile(int out_fd, int in_fd, \
+				off_t *offset, size_t count); }
 41	STD		{ int|linux_sys||socket(int domain, \
 			    int type, int protocol); }
 42	STD		{ int|linux_sys||connect(int s, \