--- /dev/null
+#include "defs.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 */
+
+#include "xlat/clone_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)
+#elif defined S390 || defined S390X || defined CRISV10 || defined CRISV32
+# define ARG_STACK 0
+# define ARG_FLAGS 1
+# define ARG_PTID 2
+# define ARG_CTID 3
+# define ARG_TLS 4
+#elif defined X86_64 || defined X32
+/* x86 personality processes have the last two arguments flipped. */
+# define ARG_FLAGS 0
+# define ARG_STACK 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
+# define ARG_FLAGS 0
+# define ARG_STACK 1
+# define ARG_PTID 2
+# define ARG_CTID 3
+# define ARG_TLS 4
+#else
+# define ARG_FLAGS 0
+# define ARG_STACK 1
+# define ARG_PTID 2
+# define ARG_TLS 3
+# 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 */
+
+int
+sys_clone(struct tcb *tcp)
+{
+ if (exiting(tcp)) {
+ const char *sep = "|";
+ unsigned long flags = tcp->u_arg[ARG_FLAGS];
+ tprintf("child_stack=%#lx, ", tcp->u_arg[ARG_STACK]);
+#ifdef ARG_STACKSIZE
+ if (ARG_STACKSIZE != -1)
+ tprintf("stack_size=%#lx, ",
+ tcp->u_arg[ARG_STACKSIZE]);
+#endif
+ tprints("flags=");
+ if (!printflags(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_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]);
+ }
+ 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
+ * to allow us to catch children, and we use another hack for that.
+ * But CLONE_PTRACE can conceivably be used by malicious programs
+ * to subvert us. By clearing this bit, we can defend against it:
+ * in untraced execution, CLONE_PTRACE should have no effect.
+ *
+ * We can also clear CLONE_UNTRACED, since it allows to start
+ * children outside of our control. At the moment
+ * I'm trying to figure out whether there is a *legitimate*
+ * use of this flag which we should respect.
+ */
+ return 0;
+}
+
+int
+sys_setns(struct tcb *tcp)
+{
+ if (entering(tcp)) {
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printflags(clone_flags, tcp->u_arg[1], "CLONE_???");
+ }
+ return 0;
+}
+
+int
+sys_unshare(struct tcb *tcp)
+{
+ if (entering(tcp))
+ printflags(clone_flags, tcp->u_arg[0], "CLONE_???");
+ return 0;
+}
+
+int
+sys_fork(struct tcb *tcp)
+{
+ if (exiting(tcp))
+ return RVAL_UDECIMAL;
+ return 0;
+}
return 0;
}
-/* 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 */
-
-#include "xlat/clone_flags.h"
-
-#if defined I386 || defined X86_64 || defined X32
-extern void print_user_desc(struct tcb *, long);
-#endif /* I386 || X86_64 || X32 */
-
-#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)
-#elif defined S390 || defined S390X || defined CRISV10 || defined CRISV32
-# define ARG_STACK 0
-# define ARG_FLAGS 1
-# define ARG_PTID 2
-# define ARG_CTID 3
-# define ARG_TLS 4
-#elif defined X86_64 || defined X32
-/* x86 personality processes have the last two arguments flipped. */
-# define ARG_FLAGS 0
-# define ARG_STACK 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
-# define ARG_FLAGS 0
-# define ARG_STACK 1
-# define ARG_PTID 2
-# define ARG_CTID 3
-# define ARG_TLS 4
-#else
-# define ARG_FLAGS 0
-# define ARG_STACK 1
-# define ARG_PTID 2
-# define ARG_TLS 3
-# define ARG_CTID 4
-#endif
-
-int
-sys_clone(struct tcb *tcp)
-{
- if (exiting(tcp)) {
- const char *sep = "|";
- unsigned long flags = tcp->u_arg[ARG_FLAGS];
- tprintf("child_stack=%#lx, ", tcp->u_arg[ARG_STACK]);
-#ifdef ARG_STACKSIZE
- if (ARG_STACKSIZE != -1)
- tprintf("stack_size=%#lx, ",
- tcp->u_arg[ARG_STACKSIZE]);
-#endif
- tprints("flags=");
- if (!printflags(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_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]);
- }
- 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
- * to allow us to catch children, and we use another hack for that.
- * But CLONE_PTRACE can conceivably be used by malicious programs
- * to subvert us. By clearing this bit, we can defend against it:
- * in untraced execution, CLONE_PTRACE should have no effect.
- *
- * We can also clear CLONE_UNTRACED, since it allows to start
- * children outside of our control. At the moment
- * I'm trying to figure out whether there is a *legitimate*
- * use of this flag which we should respect.
- */
- return 0;
-}
-
-int
-sys_setns(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printflags(clone_flags, tcp->u_arg[1], "CLONE_???");
- }
- return 0;
-}
-
-int
-sys_unshare(struct tcb *tcp)
-{
- if (entering(tcp))
- printflags(clone_flags, tcp->u_arg[0], "CLONE_???");
- return 0;
-}
-
-int
-sys_fork(struct tcb *tcp)
-{
- if (exiting(tcp))
- return RVAL_UDECIMAL;
- return 0;
-}
-
#include "xlat/ptrace_cmds.h"
#include "xlat/ptrace_setoptions_flags.h"
#include "xlat/nt_descriptor_types.h"
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