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Message-ID: <m1wsrstmi4.fsf@ebiederm.dsl.xmission.com>
Date: Wed, 05 Dec 2007 22:34:11 -0700
From: ebiederm@...ssion.com (Eric W. Biederman)
To: Andrew Morton <akpm@...ux-foundation.org>
CC: Oleg Nesterov <oleg@...sign.ru>, <linux-kernel@...r.kernel.org>,
Linux Containers <containers@...ts.osdl.org>,
Pavel Emelyanov <xemul@...nvz.org>, <sukadev@...ibm.com>
Subject: [PATCH] pid: Fix mips irix emulation pid usage
Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
arch/mips/kernel/irixelf.c | 14 +++++++-------
arch/mips/kernel/irixsig.c | 16 ++++++++++------
arch/mips/kernel/sysirix.c | 12 ++++++------
3 files changed, 23 insertions(+), 19 deletions(-)
diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
index 7852c7c..290d8e3 100644
--- a/arch/mips/kernel/irixelf.c
+++ b/arch/mips/kernel/irixelf.c
@@ -591,9 +591,9 @@ static void irix_map_prda_page(void)
return;
pp = (struct prda *) v;
- pp->prda_sys.t_pid = current->pid;
+ pp->prda_sys.t_pid = task_pid_vnr(current);
pp->prda_sys.t_prid = read_c0_prid();
- pp->prda_sys.t_rpid = current->pid;
+ pp->prda_sys.t_rpid = task_pid_vnr(current);
/* We leave the rest set to zero */
}
@@ -1170,11 +1170,11 @@ static int irix_core_dump(long signr, struct pt_regs *regs, struct file *file, u
prstatus.pr_info.si_signo = prstatus.pr_cursig = signr;
prstatus.pr_sigpend = current->pending.signal.sig[0];
prstatus.pr_sighold = current->blocked.sig[0];
- psinfo.pr_pid = prstatus.pr_pid = current->pid;
- psinfo.pr_ppid = prstatus.pr_ppid = current->parent->pid;
- psinfo.pr_pgrp = prstatus.pr_pgrp = task_pgrp_nr(current);
- psinfo.pr_sid = prstatus.pr_sid = task_session_nr(current);
- if (current->pid == current->tgid) {
+ psinfo.pr_pid = prstatus.pr_pid = task_pid_vnr(current);
+ psinfo.pr_ppid = prstatus.pr_ppid = task_pid_vnr(current->parent);
+ psinfo.pr_pgrp = prstatus.pr_pgrp = task_pgrp_vnr(current);
+ psinfo.pr_sid = prstatus.pr_sid = task_session_vnr(current);
+ if (thread_group_leader(current)) {
/*
* This is the record for the group leader. Add in the
* cumulative times of previous dead threads. This total
diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
index 5b10ac1..0215c80 100644
--- a/arch/mips/kernel/irixsig.c
+++ b/arch/mips/kernel/irixsig.c
@@ -578,10 +578,11 @@ out:
#define W_MASK (W_EXITED | W_TRAPPED | W_STOPPED | W_CONT | W_NOHANG)
-asmlinkage int irix_waitsys(int type, int pid,
+asmlinkage int irix_waitsys(int type, int upid,
struct irix5_siginfo __user *info, int options,
struct rusage __user *ru)
{
+ struct pid *pid = NULL;
int flag, retval;
DECLARE_WAITQUEUE(wait, current);
struct task_struct *tsk;
@@ -604,6 +605,8 @@ asmlinkage int irix_waitsys(int type, int pid,
if (type != IRIX_P_PID && type != IRIX_P_PGID && type != IRIX_P_ALL)
return -EINVAL;
+ if (type != IRIX_P_ALL)
+ pid = find_get_pid(upid);
add_wait_queue(¤t->signal->wait_chldexit, &wait);
repeat:
flag = 0;
@@ -612,9 +615,9 @@ repeat:
tsk = current;
list_for_each(_p, &tsk->children) {
p = list_entry(_p, struct task_struct, sibling);
- if ((type == IRIX_P_PID) && p->pid != pid)
+ if ((type == IRIX_P_PID) && task_pid(p) != pid)
continue;
- if ((type == IRIX_P_PGID) && task_pgrp_nr(p) != pid)
+ if ((type == IRIX_P_PGID) && task_pgrp(p) != pid)
continue;
if ((p->exit_signal != SIGCHLD))
continue;
@@ -639,7 +642,7 @@ repeat:
retval = __put_user(SIGCHLD, &info->sig);
retval |= __put_user(0, &info->code);
- retval |= __put_user(p->pid, &info->stuff.procinfo.pid);
+ retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
retval |= __put_user((p->exit_code >> 8) & 0xff,
&info->stuff.procinfo.procdata.child.status);
retval |= __put_user(p->utime, &info->stuff.procinfo.procdata.child.utime);
@@ -657,7 +660,7 @@ repeat:
getrusage(p, RUSAGE_BOTH, ru);
retval = __put_user(SIGCHLD, &info->sig);
retval |= __put_user(1, &info->code); /* CLD_EXITED */
- retval |= __put_user(p->pid, &info->stuff.procinfo.pid);
+ retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
retval |= __put_user((p->exit_code >> 8) & 0xff,
&info->stuff.procinfo.procdata.child.status);
retval |= __put_user(p->utime,
@@ -665,7 +668,7 @@ repeat:
retval |= __put_user(p->stime,
&info->stuff.procinfo.procdata.child.stime);
if (retval)
- return retval;
+ goto end_waitsys;
if (p->real_parent != p->parent) {
write_lock_irq(&tasklist_lock);
@@ -698,6 +701,7 @@ repeat:
end_waitsys:
current->state = TASK_RUNNING;
remove_wait_queue(¤t->signal->wait_chldexit, &wait);
+ put_pid(pid);
return retval;
}
diff --git a/arch/mips/kernel/sysirix.c b/arch/mips/kernel/sysirix.c
index 6f5446b..13f0f96 100644
--- a/arch/mips/kernel/sysirix.c
+++ b/arch/mips/kernel/sysirix.c
@@ -582,8 +582,8 @@ out:
asmlinkage int irix_getpid(struct pt_regs *regs)
{
- regs->regs[3] = current->real_parent->pid;
- return current->pid;
+ regs->regs[3] = task_pid_vnr(current->real_parent);
+ return task_pid_vnr(current);
}
asmlinkage int irix_getuid(struct pt_regs *regs)
@@ -763,11 +763,11 @@ asmlinkage int irix_setpgrp(int flags)
printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
#endif
if(!flags)
- error = task_pgrp_nr(current);
+ error = task_pgrp_vnr(current);
else
error = sys_setsid();
#ifdef DEBUG_PROCGRPS
- printk("returning %d\n", task_pgrp_nr(current));
+ printk("returning %d\n", error);
#endif
return error;
@@ -1093,10 +1093,10 @@ asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
pid, pgrp);
#endif
if(!pid)
- pid = current->pid;
+ pid = task_pid_vnr(current);
/* Wheee, weird sysv thing... */
- if ((pgrp == 0) && (pid == current->pid))
+ if ((pgrp == 0) && (pid == task_pid_vnr(current))
error = sys_setsid();
else
error = sys_setpgid(pid, pgrp);
--
1.5.3.rc6.17.g1911
--
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