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support process group

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This commit is contained in:
Tomoki Shirasawa
2014-08-18 17:08:28 +09:00
parent 663c121308
commit 78d10cce80
8 changed files with 103 additions and 3 deletions
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1
arch/x86/kernel/include/syscall_list.h
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@ -61,6 +61,7 @@ SYSCALL_DELEGATED(102, getuid)
SYSCALL_DELEGATED(104, getgid)
SYSCALL_DELEGATED(107, geteuid)
SYSCALL_DELEGATED(108, getegid)
SYSCALL_HANDLED(109, setpgid)
SYSCALL_DELEGATED(110, getppid)
SYSCALL_DELEGATED(111, getpgrp)
SYSCALL_HANDLED(127, rt_sigpending)

75
arch/x86/kernel/syscall.c
View File

@ -159,6 +159,34 @@ extern unsigned long do_kill(int pid, int tid, int sig);
extern void interrupt_syscall(int all, int pid);
extern int num_processors;
void
do_setpgid(int pid, int pgid)
{
struct cpu_local_var *v;
struct process *p;
struct process *proc = cpu_local_var(current);
int i;
unsigned long irqstate;
if(pid == 0)
pid = proc->pid;
if(pgid == 0)
pgid = pid;
for(i = 0; i < num_processors; i++){
v = get_cpu_local_var(i);
irqstate = ihk_mc_spinlock_lock(&(v->runq_lock));
list_for_each_entry(p, &(v->runq), sched_list){
if(p->pid <= 0)
continue;
if(p->pid == pid){
p->pgid = pgid;
}
}
ihk_mc_spinlock_unlock(&(v->runq_lock), irqstate);
}
}
void
do_signal(unsigned long rc, void *regs0, struct process *proc, struct sig_pending *pending)
{
@ -319,6 +347,52 @@ do_kill(int pid, int tid, int sig)
if(sig > 64 || sig < 0)
return -EINVAL;
if(tid == -1 && pid <= 0){
int pgid = -pid;
int rc = -ESRCH;
int *pids;
int i;
int n = 0;
int sendme = 0;
pids = kmalloc(sizeof(int) * num_processors, IHK_MC_AP_NOWAIT);
if(!pids)
return -ENOMEM;
if(pid == 0)
pgid = proc->pgid;
for(i = 0; i < num_processors; i++){
v = get_cpu_local_var(i);
irqstate = ihk_mc_spinlock_lock(&(v->runq_lock));
list_for_each_entry(p, &(v->runq), sched_list){
if(p->pid <= 0)
continue;
if(p->pid == proc->pid){
sendme = 1;
continue;
}
if(pgid == 1 || p->pgid == pgid){
int j;
for(j = 0; j < n; j++)
if(pids[j] == p->pid)
break;
if(j == n){
pids[n] = p->pid;
n++;
}
}
}
ihk_mc_spinlock_unlock(&(v->runq_lock), irqstate);
}
for(i = 0; i < n; i++)
rc = do_kill(pids[i], -1, sig);
if(sendme)
rc = do_kill(proc->pid, -1, sig);
kfree(pids);
return rc;
}
mask = __sigmask(sig);
if(tid == -1){
struct process *tproc0 = NULL;
@ -381,7 +455,6 @@ do_kill(int pid, int tid, int sig)
if(sig == 0)
return 0;
doint = 0;
if(tid == -1){
irqstate = ihk_mc_spinlock_lock(&tproc->sigshared->lock);