+/*
+ * Copyright (c) 1999-2000 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 2002-2005 Roland McGrath <roland@redhat.com>
+ * Copyright (c) 2008 Jan Kratochvil <jan.kratochvil@redhat.com>
+ * Copyright (c) 2009-2013 Denys Vlasenko <dvlasenk@redhat.com>
+ * Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2014-2017 The strace developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * 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.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include "defs.h"
+#include <sched.h>
+#include <asm/unistd.h>
-/* defines copied from linux/sched.h since we can't include that
- * ourselves (it conflicts with *lots* of libc includes)
- */
-#define CSIGNAL 0x000000ff /* signal mask to be sent at exit */
-#define CLONE_VM 0x00000100 /* set if VM shared between processes */
-#define CLONE_FS 0x00000200 /* set if fs info shared between processes */
-#define CLONE_FILES 0x00000400 /* set if open files shared between processes */
-#define CLONE_SIGHAND 0x00000800 /* set if signal handlers shared */
-#define CLONE_IDLETASK 0x00001000 /* kernel-only flag */
-#define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */
-#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */
-#define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */
-#define CLONE_THREAD 0x00010000 /* Same thread group? */
-#define CLONE_NEWNS 0x00020000 /* New namespace group? */
-#define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */
-#define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */
-#define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */
-#define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */
-#define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */
-#define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */
-#define CLONE_STOPPED 0x02000000 /* Start in stopped state */
-#define CLONE_NEWUTS 0x04000000 /* New utsname group? */
-#define CLONE_NEWIPC 0x08000000 /* New ipcs */
-#define CLONE_NEWUSER 0x10000000 /* New user namespace */
-#define CLONE_NEWPID 0x20000000 /* New pid namespace */
-#define CLONE_NEWNET 0x40000000 /* New network namespace */
-#define CLONE_IO 0x80000000 /* Clone io context */
+#ifndef CSIGNAL
+# define CSIGNAL 0x000000ff
+#endif
#include "xlat/clone_flags.h"
+#include "xlat/setns_types.h"
+#include "xlat/unshare_flags.h"
#if defined IA64
# define ARG_FLAGS 0
# define ARG_STACK 1
-# define ARG_STACKSIZE (tcp->scno == SYS_clone2 ? 2 : -1)
-# define ARG_PTID (tcp->scno == SYS_clone2 ? 3 : 2)
-# define ARG_CTID (tcp->scno == SYS_clone2 ? 4 : 3)
-# define ARG_TLS (tcp->scno == SYS_clone2 ? 5 : 4)
+# define ARG_STACKSIZE (tcp->scno == __NR_clone2 ? 2 : -1)
+# define ARG_PTID (tcp->scno == __NR_clone2 ? 3 : 2)
+# define ARG_CTID (tcp->scno == __NR_clone2 ? 4 : 3)
+# define ARG_TLS (tcp->scno == __NR_clone2 ? 5 : 4)
#elif defined S390 || defined S390X || defined CRISV10 || defined CRISV32
# define ARG_STACK 0
# define ARG_FLAGS 1
# define ARG_PTID 2
# define ARG_CTID ((current_personality != 1) ? 3 : 4)
# define ARG_TLS ((current_personality != 1) ? 4 : 3)
-#elif defined ALPHA || defined TILE || defined OR1K
+#elif defined ALPHA || defined TILE || defined OR1K || defined RISCV
# define ARG_FLAGS 0
# define ARG_STACK 1
# define ARG_PTID 2
# define ARG_CTID 4
#endif
-#if defined I386 || defined X86_64 || defined X32
-extern void print_user_desc(struct tcb *, long);
-#endif /* I386 || X86_64 || X32 */
+static void
+print_tls_arg(struct tcb *const tcp, const kernel_ulong_t addr)
+{
+#ifdef HAVE_STRUCT_USER_DESC
+# if SUPPORTED_PERSONALITIES > 1
+ if (current_personality == 1)
+# endif
+ {
+ print_user_desc(tcp, tcp->u_arg[ARG_TLS]);
+ }
+# if SUPPORTED_PERSONALITIES > 1
+ else
+# endif
+#endif /* HAVE_STRUCT_USER_DESC */
+ {
+ printaddr(tcp->u_arg[ARG_TLS]);
+ }
+}
-int
-sys_clone(struct tcb *tcp)
+SYS_FUNC(clone)
{
if (exiting(tcp)) {
const char *sep = "|";
- unsigned long flags = tcp->u_arg[ARG_FLAGS];
- tprintf("child_stack=%#lx, ", tcp->u_arg[ARG_STACK]);
+ kernel_ulong_t flags = tcp->u_arg[ARG_FLAGS];
+ tprints("child_stack=");
+ printaddr(tcp->u_arg[ARG_STACK]);
+ tprints(", ");
#ifdef ARG_STACKSIZE
if (ARG_STACKSIZE != -1)
- tprintf("stack_size=%#lx, ",
+ tprintf("stack_size=%#" PRI_klx ", ",
tcp->u_arg[ARG_STACKSIZE]);
#endif
tprints("flags=");
- if (!printflags(clone_flags, flags &~ CSIGNAL, NULL))
+ if (!printflags64(clone_flags, flags & ~CSIGNAL, NULL))
sep = "";
if ((flags & CSIGNAL) != 0)
tprintf("%s%s", sep, signame(flags & CSIGNAL));
if ((flags & (CLONE_PARENT_SETTID|CLONE_CHILD_SETTID
|CLONE_CHILD_CLEARTID|CLONE_SETTLS)) == 0)
return 0;
- if (flags & CLONE_PARENT_SETTID)
- tprintf(", parent_tidptr=%#lx", tcp->u_arg[ARG_PTID]);
+ if (flags & CLONE_PARENT_SETTID) {
+ tprints(", parent_tidptr=");
+ printaddr(tcp->u_arg[ARG_PTID]);
+ }
if (flags & CLONE_SETTLS) {
-#if defined I386 || defined X86_64 || defined X32
-# ifndef I386
- if (current_personality == 1)
-# endif
- {
- tprints(", tls=");
- print_user_desc(tcp, tcp->u_arg[ARG_TLS]);
- }
-# ifndef I386
- else
-# endif
-#endif /* I386 || X86_64 || X32 */
- tprintf(", tls=%#lx", tcp->u_arg[ARG_TLS]);
+ tprints(", tls=");
+ print_tls_arg(tcp, tcp->u_arg[ARG_TLS]);
+ }
+ if (flags & (CLONE_CHILD_SETTID|CLONE_CHILD_CLEARTID)) {
+ tprints(", child_tidptr=");
+ printaddr(tcp->u_arg[ARG_CTID]);
}
- if (flags & (CLONE_CHILD_SETTID|CLONE_CHILD_CLEARTID))
- tprintf(", child_tidptr=%#lx", tcp->u_arg[ARG_CTID]);
}
/* TODO on syscall entry:
* We can clear CLONE_PTRACE here since it is an ancient hack
return 0;
}
-int
-sys_setns(struct tcb *tcp)
+SYS_FUNC(setns)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printflags(clone_flags, tcp->u_arg[1], "CLONE_???");
- }
- return 0;
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printxval(setns_types, tcp->u_arg[1], "CLONE_NEW???");
+
+ return RVAL_DECODED;
}
-int
-sys_unshare(struct tcb *tcp)
+SYS_FUNC(unshare)
{
- if (entering(tcp))
- printflags(clone_flags, tcp->u_arg[0], "CLONE_???");
- return 0;
+ printflags64(unshare_flags, tcp->u_arg[0], "CLONE_???");
+ return RVAL_DECODED;
}
-int
-sys_fork(struct tcb *tcp)
+SYS_FUNC(fork)
{
- if (exiting(tcp))
- return RVAL_UDECIMAL;
- return 0;
+ return RVAL_DECODED | RVAL_UDECIMAL;
}
projects / strace / blobdiff