diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2011-06-17 13:35:54 +1000 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2011-06-17 13:35:54 +1000 |
commit | e31935487e00c5bcd13b10eacd207e73c4da0782 (patch) | |
tree | 84b44fdbfdce006cd52ff469729c33585a5448a0 /include | |
parent | 7d05b679558b632b83d0a773e1657997957e51c9 (diff) | |
parent | 544b2c91a9f14f9565af1972203438b7f49afd48 (diff) |
Merge remote-tracking branch 'ptrace/ptrace'
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/ptrace.h | 11 | ||||
-rw-r--r-- | include/linux/sched.h | 37 | ||||
-rw-r--r-- | include/linux/tracehook.h | 52 |
3 files changed, 38 insertions, 62 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 9178d5cc0b01..4f224f169524 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -47,6 +47,13 @@ #define PTRACE_GETREGSET 0x4204 #define PTRACE_SETREGSET 0x4205 +#define PTRACE_SEIZE 0x4206 +#define PTRACE_INTERRUPT 0x4207 +#define PTRACE_LISTEN 0x4208 + +/* flags in @data for PTRACE_SEIZE */ +#define PTRACE_SEIZE_DEVEL 0x80000000 /* temp flag for development */ + /* options set using PTRACE_SETOPTIONS */ #define PTRACE_O_TRACESYSGOOD 0x00000001 #define PTRACE_O_TRACEFORK 0x00000002 @@ -65,6 +72,7 @@ #define PTRACE_EVENT_EXEC 4 #define PTRACE_EVENT_VFORK_DONE 5 #define PTRACE_EVENT_EXIT 6 +#define PTRACE_EVENT_STOP 7 #include <asm/ptrace.h> @@ -77,6 +85,7 @@ * flags. When the a task is stopped the ptracer owns task->ptrace. */ +#define PT_SEIZED 0x00010000 /* SEIZE used, enable new behavior */ #define PT_PTRACED 0x00000001 #define PT_DTRACE 0x00000002 /* delayed trace (used on m68k, i386) */ #define PT_TRACESYSGOOD 0x00000004 @@ -105,7 +114,7 @@ extern long arch_ptrace(struct task_struct *child, long request, extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len); extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len); extern void ptrace_disable(struct task_struct *); -extern int ptrace_check_attach(struct task_struct *task, int kill); +extern int ptrace_check_attach(struct task_struct *task, bool ignore_state); extern int ptrace_request(struct task_struct *child, long request, unsigned long addr, unsigned long data); extern void ptrace_notify(int exit_code); diff --git a/include/linux/sched.h b/include/linux/sched.h index a837b20ba190..1955cc234329 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1283,7 +1283,7 @@ struct task_struct { int exit_state; int exit_code, exit_signal; int pdeath_signal; /* The signal sent when the parent dies */ - unsigned int group_stop; /* GROUP_STOP_*, siglock protected */ + unsigned int jobctl; /* JOBCTL_*, siglock protected */ /* ??? */ unsigned int personality; unsigned did_exec:1; @@ -1804,15 +1804,34 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * #define used_math() tsk_used_math(current) /* - * task->group_stop flags + * task->jobctl flags */ -#define GROUP_STOP_SIGMASK 0xffff /* signr of the last group stop */ -#define GROUP_STOP_PENDING (1 << 16) /* task should stop for group stop */ -#define GROUP_STOP_CONSUME (1 << 17) /* consume group stop count */ -#define GROUP_STOP_TRAPPING (1 << 18) /* switching from STOPPED to TRACED */ -#define GROUP_STOP_DEQUEUED (1 << 19) /* stop signal dequeued */ - -extern void task_clear_group_stop_pending(struct task_struct *task); +#define JOBCTL_STOP_SIGMASK 0xffff /* signr of the last group stop */ + +#define JOBCTL_STOP_DEQUEUED_BIT 16 /* stop signal dequeued */ +#define JOBCTL_STOP_PENDING_BIT 17 /* task should stop for group stop */ +#define JOBCTL_STOP_CONSUME_BIT 18 /* consume group stop count */ +#define JOBCTL_TRAP_STOP_BIT 19 /* trap for STOP */ +#define JOBCTL_TRAP_NOTIFY_BIT 20 /* trap for NOTIFY */ +#define JOBCTL_TRAPPING_BIT 21 /* switching to TRACED */ +#define JOBCTL_LISTENING_BIT 22 /* ptracer is listening for events */ + +#define JOBCTL_STOP_DEQUEUED (1 << JOBCTL_STOP_DEQUEUED_BIT) +#define JOBCTL_STOP_PENDING (1 << JOBCTL_STOP_PENDING_BIT) +#define JOBCTL_STOP_CONSUME (1 << JOBCTL_STOP_CONSUME_BIT) +#define JOBCTL_TRAP_STOP (1 << JOBCTL_TRAP_STOP_BIT) +#define JOBCTL_TRAP_NOTIFY (1 << JOBCTL_TRAP_NOTIFY_BIT) +#define JOBCTL_TRAPPING (1 << JOBCTL_TRAPPING_BIT) +#define JOBCTL_LISTENING (1 << JOBCTL_LISTENING_BIT) + +#define JOBCTL_TRAP_MASK (JOBCTL_TRAP_STOP | JOBCTL_TRAP_NOTIFY) +#define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK) + +extern bool task_set_jobctl_pending(struct task_struct *task, + unsigned int mask); +extern void task_clear_jobctl_trapping(struct task_struct *task); +extern void task_clear_jobctl_pending(struct task_struct *task, + unsigned int mask); #ifdef CONFIG_PREEMPT_RCU diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index e95f5236611f..15745cdd32ce 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -425,58 +425,6 @@ static inline int tracehook_consider_fatal_signal(struct task_struct *task, return (task_ptrace(task) & PT_PTRACED) != 0; } -/** - * tracehook_force_sigpending - let tracing force signal_pending(current) on - * - * Called when recomputing our signal_pending() flag. Return nonzero - * to force the signal_pending() flag on, so that tracehook_get_signal() - * will be called before the next return to user mode. - * - * Called with @current->sighand->siglock held. - */ -static inline int tracehook_force_sigpending(void) -{ - return 0; -} - -/** - * tracehook_get_signal - deliver synthetic signal to traced task - * @task: @current - * @regs: task_pt_regs(@current) - * @info: details of synthetic signal - * @return_ka: sigaction for synthetic signal - * - * Return zero to check for a real pending signal normally. - * Return -1 after releasing the siglock to repeat the check. - * Return a signal number to induce an artificial signal delivery, - * setting *@info and *@return_ka to specify its details and behavior. - * - * The @return_ka->sa_handler value controls the disposition of the - * signal, no matter the signal number. For %SIG_DFL, the return value - * is a representative signal to indicate the behavior (e.g. %SIGTERM - * for death, %SIGQUIT for core dump, %SIGSTOP for job control stop, - * %SIGTSTP for stop unless in an orphaned pgrp), but the signal number - * reported will be @info->si_signo instead. - * - * Called with @task->sighand->siglock held, before dequeuing pending signals. - */ -static inline int tracehook_get_signal(struct task_struct *task, - struct pt_regs *regs, - siginfo_t *info, - struct k_sigaction *return_ka) -{ - return 0; -} - -/** - * tracehook_finish_jctl - report about return from job control stop - * - * This is called by do_signal_stop() after wakeup. - */ -static inline void tracehook_finish_jctl(void) -{ -} - #define DEATH_REAP -1 #define DEATH_DELAYED_GROUP_LEADER -2 |