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ptrace supports threads

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Fujitsu: POSTK_DEBUG_TEMP_FIX_53, POSTK_DEBUG_ARCH_DEP_44
Refs: #771, #1179, #1143
Change-Id: Ie17ece6864f0eeb0c0e550f4e369abb77980a0d0
This commit is contained in:
Tomoki Shirasawa
2018-09-14 14:50:36 +09:00
committed by Dominique Martinet
parent 28c434a230
commit ed1edb152b
17 changed files with 2513 additions and 575 deletions
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56
kernel/include/process.h
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@ -464,6 +464,14 @@ struct process {
// threads and children
struct list_head threads_list;
struct list_head report_threads_list;
/*
* main_thread is used to refer to thread information using process ID.
* 1) signal related state in signal_flags
* 2) status of trace
*/
struct thread *main_thread;
mcs_rwlock_lock_t threads_lock; // lock for threads_list
/* TID set of proxy process */
struct mcexec_tid *tids;
@ -492,7 +500,6 @@ struct process {
// V +---- |
// PS_STOPPED -----+
// (PS_TRACED)
unsigned long exit_status; // only for zombie
/* Store exit_status for a group of threads when stopped by SIGSTOP.
exit_status can't be used because values of exit_status of threads
@ -524,22 +531,6 @@ struct process {
long saved_cmdline_len;
cpu_set_t cpu_set;
/* Store ptrace flags.
* The lower 8 bits are PTRACE_O_xxx of the PTRACE_SETOPTIONS request.
* Other bits are for inner use of the McKernel.
*/
int ptrace;
/* Store ptrace event message.
* PTRACE_O_xxx will store event message here.
* PTRACE_GETEVENTMSG will get from here.
*/
unsigned long ptrace_eventmsg;
/* Store event related to signal. For example,
it represents that the proceess has been resumed by SIGCONT. */
int signal_flags;
/* Store signal sent to parent when the process terminates. */
int termsig;
@ -610,7 +601,7 @@ struct thread {
// thread info
int cpu_id;
int tid;
int status; // PS_RUNNING -> PS_EXITED
int status; // PS_RUNNING -> PS_EXITED (-> ZOMBIE / ptrace)
// | ^ ^
// | | |
// V | |
@ -620,6 +611,14 @@ struct thread {
// PS_UNINTERRUPTIBLE
int exit_status;
/*
* Store event related to signal. For example,
* it represents that the proceess has been resumed by SIGCONT.
*/
int signal_flags;
int termsig;
// process vm
struct process_vm *vm;
@ -639,6 +638,22 @@ struct thread {
ihk_spinlock_t spin_sleep_lock;
int spin_sleep;
// for ptrace
struct process *report_proc;
struct list_head report_siblings_list; // lock process
/* Store ptrace flags.
* The lower 8 bits are PTRACE_O_xxx of the PTRACE_SETOPTIONS request.
* Other bits are for inner use of the McKernel.
*/
int ptrace;
/* Store ptrace event message.
* PTRACE_O_xxx will store event message here.
* PTRACE_GETEVENTMSG will get from here.
*/
unsigned long ptrace_eventmsg;
ihk_atomic_t refcount;
int *clear_child_tid;
@ -830,8 +845,8 @@ void cpu_clear_and_set(int c_cpu, int s_cpu,
void release_cpuid(int cpuid);
struct thread *find_thread(int pid, int tid, struct mcs_rwlock_node_irqsave *lock);
void thread_unlock(struct thread *thread, struct mcs_rwlock_node_irqsave *lock);
struct thread *find_thread(int pid, int tid);
void thread_unlock(struct thread *thread);
struct process *find_process(int pid, struct mcs_rwlock_node_irqsave *lock);
void process_unlock(struct process *proc, struct mcs_rwlock_node_irqsave *lock);
void chain_process(struct process *);
@ -846,6 +861,7 @@ extern unsigned long do_kill(struct thread *thread, int pid, int tid, int sig,
struct siginfo *info, int ptracecont);
extern void set_signal(int sig, void *regs, struct siginfo *info);
extern void check_sig_pending(void);
void clear_single_step(struct thread *thread);
void release_fp_regs(struct thread *proc);
void save_fp_regs(struct thread *proc);