implement chown(2) in compat_linux which is needed by some antivirus software

ok pirofti@

7 files changed, 39 insertions, 18 deletions

diff --git a/sys/compat/linux/linux_dummy.c b/sys/compat/linux/linux_dummy.c
index 65bdf45571b..d77613043cd 100644
--- a/sys/compat/linux/linux_dummy.c
+++ b/sys/compat/linux/linux_dummy.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: linux_dummy.c,v 1.17 2011/04/05 15:36:09 pirofti Exp $ */
+/*	$OpenBSD: linux_dummy.c,v 1.18 2011/11/25 10:10:05 robert Exp $ */
 
 /*-
  * Copyright (c) 1994-1995 Søren Schmidt
@@ -8,7 +8,7 @@
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer 
+ *    notice, this list of conditions and the following disclaimer
  *    in this position and unchanged.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ -46,7 +46,7 @@ linux_sys_ ## s(p, v, retval)						\
 	register_t *retval;						\
 {									\
 	return (unsupported_msg(p, #s));				\
-}									
+}
 
 static int
 unsupported_msg(struct proc *p, const char *fname)
@@ -109,7 +109,6 @@ DUMMY(getpmsg);			/* #188 */
 DUMMY(putpmsg);			/* #189 */
 DUMMY(lchown);			/* #198 */
 DUMMY(fchown);			/* #207 */
-DUMMY(chown);			/* #212 */
 DUMMY(setfsgid);		/* #216 */
 DUMMY(pivot_root);		/* #217 */
 DUMMY(mincore);			/* #218 */
@@ -123,7 +122,7 @@ linux_sys_ ## s ## xattr(p, v, retval)						\
 	register_t *retval;						\
 {									\
 	return (ENOATTR);						\
-}									
+}
 DUMMY_XATTR(set);
 DUMMY_XATTR(lset);
 DUMMY_XATTR(fset);
diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index 584aaf10bff..5c1a1bd2cec 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: linux_file.c,v 1.25 2011/07/07 01:19:39 tedu Exp $	*/
+/*	$OpenBSD: linux_file.c,v 1.26 2011/11/25 10:10:05 robert Exp $	*/
 /*	$NetBSD: linux_file.c,v 1.15 1996/05/20 01:59:09 fvdl Exp $	*/
 
 /*
@@ -692,6 +692,21 @@ linux_sys_chmod(p, v, retval)
 }
 
 int
+linux_sys_chown(struct proc *p, void *v, register_t *retval)
+{
+	struct linux_sys_chown_args /* {
+		syscallarg(char *) path;
+		syscallarg(uid_t) uid;
+		syscallarg(gid_t) gid;
+	} */ *uap = v;
+	caddr_t sg = stackgap_init(p->p_emul);
+
+	LINUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
+
+	return sys_chown(p, uap, retval);
+}
+
+int
 linux_sys_chown16(p, v, retval)
 	struct proc *p;
 	void *v;
diff --git a/sys/compat/linux/linux_syscall.h b/sys/compat/linux/linux_syscall.h
index fc8c1fb91f9..d36ea46fdc9 100644
--- a/sys/compat/linux/linux_syscall.h
+++ b/sys/compat/linux/linux_syscall.h
@@ -1,10 +1,10 @@
-/*	$OpenBSD: linux_syscall.h,v 1.67 2011/09/19 22:49:57 pirofti Exp $	*/
+/*	$OpenBSD: linux_syscall.h,v 1.68 2011/11/25 10:10:05 robert Exp $	*/
 
 /*
  * System call numbers.
  *
  * DO NOT EDIT-- this file is automatically generated.
- * created from	OpenBSD: syscalls.master,v 1.63 2011/09/19 14:33:14 pirofti Exp 
+ * created from	OpenBSD: syscalls.master,v 1.64 2011/09/19 22:49:37 pirofti Exp 
  */
 
 /* syscall: "syscall" ret: "int" args: */
@@ -652,7 +652,7 @@
 /* syscall: "getresgid" ret: "int" args: "gid_t *" "gid_t *" "gid_t *" */
 #define	LINUX_SYS_getresgid	211
 
-/* syscall: "chown" ret: "int" args: */
+/* syscall: "chown" ret: "int" args: "char *" "uid_t" "gid_t" */
 #define	LINUX_SYS_chown	212
 
 /* syscall: "setuid" ret: "int" args: "uid_t" */
diff --git a/sys/compat/linux/linux_syscallargs.h b/sys/compat/linux/linux_syscallargs.h
index a351941d0d4..0553ea11820 100644
--- a/sys/compat/linux/linux_syscallargs.h
+++ b/sys/compat/linux/linux_syscallargs.h
@@ -1,10 +1,10 @@
-/*	$OpenBSD: linux_syscallargs.h,v 1.69 2011/09/19 22:49:57 pirofti Exp $	*/
+/*	$OpenBSD: linux_syscallargs.h,v 1.70 2011/11/25 10:10:05 robert Exp $	*/
 
 /*
  * System call argument lists.
  *
  * DO NOT EDIT-- this file is automatically generated.
- * created from	OpenBSD: syscalls.master,v 1.63 2011/09/19 14:33:14 pirofti Exp 
+ * created from	OpenBSD: syscalls.master,v 1.64 2011/09/19 22:49:37 pirofti Exp 
  */
 
 #ifdef	syscallarg
@@ -552,6 +552,12 @@ struct linux_sys_fstat64_args {
 	syscallarg(struct linux_stat64 *) sp;
 };
 
+struct linux_sys_chown_args {
+	syscallarg(char *) path;
+	syscallarg(uid_t) uid;
+	syscallarg(gid_t) gid;
+};
+
 struct linux_sys_setfsuid_args {
 	syscallarg(uid_t) uid;
 };
diff --git a/sys/compat/linux/linux_syscalls.c b/sys/compat/linux/linux_syscalls.c
index f2316073959..f99cd8d42d8 100644
--- a/sys/compat/linux/linux_syscalls.c
+++ b/sys/compat/linux/linux_syscalls.c
@@ -1,10 +1,10 @@
-/*	$OpenBSD: linux_syscalls.c,v 1.67 2011/09/19 22:49:57 pirofti Exp $	*/
+/*	$OpenBSD: linux_syscalls.c,v 1.68 2011/11/25 10:10:05 robert Exp $	*/
 
 /*
  * System call names.
  *
  * DO NOT EDIT-- this file is automatically generated.
- * created from	OpenBSD: syscalls.master,v 1.63 2011/09/19 14:33:14 pirofti Exp 
+ * created from	OpenBSD: syscalls.master,v 1.64 2011/09/19 22:49:37 pirofti Exp 
  */
 
 char *linux_syscallnames[] = {
diff --git a/sys/compat/linux/linux_sysent.c b/sys/compat/linux/linux_sysent.c
index 74069eaf12e..60ca545ab9c 100644
--- a/sys/compat/linux/linux_sysent.c
+++ b/sys/compat/linux/linux_sysent.c
@@ -1,10 +1,10 @@
-/*	$OpenBSD: linux_sysent.c,v 1.68 2011/09/19 22:49:57 pirofti Exp $	*/
+/*	$OpenBSD: linux_sysent.c,v 1.69 2011/11/25 10:10:05 robert Exp $	*/
 
 /*
  * System call switch table.
  *
  * DO NOT EDIT-- this file is automatically generated.
- * created from	OpenBSD: syscalls.master,v 1.63 2011/09/19 14:33:14 pirofti Exp 
+ * created from	OpenBSD: syscalls.master,v 1.64 2011/09/19 22:49:37 pirofti Exp 
  */
 
 #include <sys/param.h>
@@ -470,7 +470,7 @@ struct sysent linux_sysent[] = {
 	    sys_setresgid },			/* 210 = setresgid */
 	{ 3, s(struct sys_getresgid_args), 0,
 	    sys_getresgid },			/* 211 = getresgid */
-	{ 0, 0, 0,
+	{ 3, s(struct linux_sys_chown_args), 0,
 	    linux_sys_chown },			/* 212 = chown */
 	{ 1, s(struct sys_setuid_args), 0,
 	    sys_setuid },			/* 213 = setuid */
diff --git a/sys/compat/linux/syscalls.master b/sys/compat/linux/syscalls.master
index b36acf0085e..ed1132c5358 100644
--- a/sys/compat/linux/syscalls.master
+++ b/sys/compat/linux/syscalls.master
@@ -1,4 +1,4 @@
-	$OpenBSD: syscalls.master,v 1.64 2011/09/19 22:49:37 pirofti Exp $
+	$OpenBSD: syscalls.master,v 1.65 2011/11/25 10:10:05 robert Exp $
 ;	$NetBSD: syscalls.master,v 1.15 1995/12/18 14:35:10 fvdl Exp $
 
 ;	@(#)syscalls.master	8.1 (Berkeley) 7/19/93
@@ -349,7 +349,8 @@
 			    gid_t sgid); }
 211	NOARGS		{ int sys_getresgid(gid_t *rgid, gid_t *egid, \
 			    gid_t *sgid); }
-212	NOARGS		{ int linux_sys_chown(void); }
+212	STD		{ int linux_sys_chown(char *path, uid_t uid, \
+			    gid_t gid); }
 213	NOARGS		{ int sys_setuid(uid_t uid); }
 214	NOARGS		{ int sys_setgid(gid_t gid); }
 215	STD		{ int linux_sys_setfsuid(uid_t uid); }