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[PATCH 11/13] Changes to show virtual ids to user [message #13296 is a reply to message #13284] Thu, 24 May 2007 13:06 Go to previous messageGo to previous message
Pavel Emelianov is currently offline  Pavel Emelianov
Messages: 1149
Registered: September 2006
Senior Member
This is the largest patch in the set. Make all (I hope)
the places where the pid is shown to or get from user
operate on the virtual pids.

An exception is copy_process - it was in one of the
previous patches - and the proc - this will come as a
separate patch.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>

---

diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index aeec818..cdb64cc 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -227,7 +227,7 @@ ia64_rt_sigreturn (struct sigscratch *sc
si.si_signo = SIGSEGV;
si.si_errno = 0;
si.si_code = SI_KERNEL;
- si.si_pid = current->pid;
+ si.si_pid = task_pid_vnr(current);
si.si_uid = current->uid;
si.si_addr = sc;
force_sig_info(SIGSEGV, &si, current);
@@ -332,7 +332,7 @@ force_sigsegv_info (int sig, void __user
si.si_signo = SIGSEGV;
si.si_errno = 0;
si.si_code = SI_KERNEL;
- si.si_pid = current->pid;
+ si.si_pid = task_pid_vnr(current);
si.si_uid = current->uid;
si.si_addr = addr;
force_sig_info(SIGSEGV, &si, current);
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index fb35ebc..2ce3806 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -181,7 +181,7 @@ give_sigsegv:
si.si_signo = SIGSEGV;
si.si_errno = 0;
si.si_code = SI_KERNEL;
- si.si_pid = current->pid;
+ si.si_pid = task_pid_vnr(current);
si.si_uid = current->uid;
si.si_addr = &frame->uc;
force_sig_info(SIGSEGV, &si, current);
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 260a1f3..9161107 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -103,6 +103,7 @@
#include <linux/selection.h>

#include <linux/kmod.h>
+#include <linux/nsproxy.h>

#undef TTY_DEBUG_HANGUP

@@ -3065,7 +3066,7 @@ static int tiocgpgrp(struct tty_struct *
*/
if (tty == real_tty && current->signal->tty != real_tty)
return -ENOTTY;
- return put_user(pid_nr(real_tty->pgrp), p);
+ return put_user(pid_vnr(real_tty->pgrp), p);
}

/**
@@ -3099,7 +3100,7 @@ static int tiocspgrp(struct tty_struct *
if (pgrp_nr < 0)
return -EINVAL;
rcu_read_lock();
- pgrp = find_pid(pgrp_nr);
+ pgrp = find_vpid(pgrp_nr);
retval = -ESRCH;
if (!pgrp)
goto out_unlock;
@@ -3136,7 +3137,7 @@ static int tiocgsid(struct tty_struct *t
return -ENOTTY;
if (!real_tty->session)
return -ENOTTY;
- return put_user(pid_nr(real_tty->session), p);
+ return put_user(pid_vnr(real_tty->session), p);
}

/**
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 7893feb..6f30d05 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1325,10 +1325,10 @@ static void fill_prstatus(struct elf_prs
prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
prstatus->pr_sigpend = p->pending.signal.sig[0];
prstatus->pr_sighold = p->blocked.sig[0];
- prstatus->pr_pid = p->pid;
- prstatus->pr_ppid = p->parent->pid;
- prstatus->pr_pgrp = task_pgrp_nr(p);
- prstatus->pr_sid = task_session_nr(p);
+ prstatus->pr_pid = task_pid_vnr(p);
+ prstatus->pr_ppid = task_pid_vnr(p->parent);
+ prstatus->pr_pgrp = task_pgrp_vnr(p);
+ prstatus->pr_sid = task_session_vnr(p);
if (thread_group_leader(p)) {
/*
* This is the record for the group leader. Add in the
@@ -1371,10 +1371,10 @@ static int fill_psinfo(struct elf_prpsin
psinfo->pr_psargs[i] = ' ';
psinfo->pr_psargs[len] = 0;

- psinfo->pr_pid = p->pid;
- psinfo->pr_ppid = p->parent->pid;
- psinfo->pr_pgrp = task_pgrp_nr(p);
- psinfo->pr_sid = task_session_nr(p);
+ psinfo->pr_pid = task_pid_vnr(p);
+ psinfo->pr_ppid = task_pid_vnr(p->parent);
+ psinfo->pr_pgrp = task_pgrp_vnr(p);
+ psinfo->pr_sid = task_session_vnr(p);

i = p->state ? ffz(~p->state) + 1 : 0;
psinfo->pr_state = i;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 9bb9ff1..87d6eaf 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1332,10 +1332,10 @@ static void fill_prstatus(struct elf_prs
prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
prstatus->pr_sigpend = p->pending.signal.sig[0];
prstatus->pr_sighold = p->blocked.sig[0];
- prstatus->pr_pid = p->pid;
- prstatus->pr_ppid = p->parent->pid;
- prstatus->pr_pgrp = task_pgrp_nr(p);
- prstatus->pr_sid = task_session_nr(p);
+ prstatus->pr_pid = task_pid_vnr(p);
+ prstatus->pr_ppid = task_pid_vnr(p->parent);
+ prstatus->pr_pgrp = task_pgrp_vnr(p);
+ prstatus->pr_sid = task_session_vnr(p);
if (thread_group_leader(p)) {
/*
* This is the record for the group leader. Add in the
@@ -1381,10 +1381,10 @@ static int fill_psinfo(struct elf_prpsin
psinfo->pr_psargs[i] = ' ';
psinfo->pr_psargs[len] = 0;

- psinfo->pr_pid = p->pid;
- psinfo->pr_ppid = p->parent->pid;
- psinfo->pr_pgrp = task_pgrp_nr(p);
- psinfo->pr_sid = task_session_nr(p);
+ psinfo->pr_pid = task_pid_vnr(p);
+ psinfo->pr_ppid = task_pid_vnr(p->parent);
+ psinfo->pr_pgrp = task_pgrp_vnr(p);
+ psinfo->pr_sid = task_session_vnr(p);

i = p->state ? ffz(~p->state) + 1 : 0;
psinfo->pr_state = i;
diff --git a/fs/exec.c b/fs/exec.c
index 0b68588..b8a3582 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -713,6 +713,9 @@ static int de_thread(struct task_struct
attach_pid(tsk, PIDTYPE_PID, find_pid(tsk->pid));
transfer_pid(leader, tsk, PIDTYPE_PGID);
transfer_pid(leader, tsk, PIDTYPE_SID);
+ set_task_vpgrp(leader, task_pid_vnr(current));
+ set_task_vpid(leader, task_pid_vnr(current));
+ set_task_vtgid(current, task_pid_vnr(current));
list_replace_rcu(&leader->tasks, &tsk->tasks);

tsk->group_leader = tsk;
@@ -1301,7 +1304,7 @@ static int format_corename(char *corenam
case 'p':
pid_in_pattern = 1;
rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", current->tgid);
+ "%d", task_tgid_vnr(current));
if (rc > out_end - out_ptr)
goto out;
out_ptr += rc;
@@ -1373,7 +1376,7 @@ static int format_corename(char *corenam
if (!ispipe && !pid_in_pattern
&& (core_uses_pid || atomic_read(&current->mm->mm_users) != 1)) {
rc = snprintf(out_ptr, out_end - out_ptr,
- ".%d", current->tgid);
+ ".%d", task_tgid_vnr(current));
if (rc > out_end - out_ptr)
goto out;
out_ptr += rc;
diff --git a/include/net/scm.h b/include/net/scm.h
index 5637d5e..43ed2f1 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -54,7 +54,7 @@ static __inline__ int scm_send(struct so
struct task_struct *p = current;
scm->creds.uid = p->uid;
scm->creds.gid = p->gid;
- scm->creds.pid = p->tgid;
+ scm->creds.pid = task_tgid_vnr(p);
scm->fp = NULL;
scm->seq = 0;
unix_get_peersec_dgram(sock, scm);
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index a242c83..9480a9e 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -513,7 +513,7 @@ static void __do_notify(struct mqueue_in
sig_i.si_errno = 0;
sig_i.si_code = SI_MESGQ;
sig_i.si_value = info->notify.sigev_value;
- sig_i.si_pid = current->tgid;
+ sig_i.si_pid = task_pid_vnr(current);
sig_i.si_uid = current->uid;

kill_pid_info(info->notify.sigev_signo,
diff --git a/ipc/msg.c b/ipc/msg.c
index 1cdb378..75fcbf6 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -615,7 +615,7 @@ static inline int pipelined_send(struct
msr->r_msg = ERR_PTR(-E2BIG);
} else {
msr->r_msg = NULL;
- msq->q_lrpid = msr->r_tsk->pid;
+ msq->q_lrpid = task_pid_vnr(msr->r_tsk);
msq->q_rtime = get_seconds();
wake_up_process(msr->r_tsk);
smp_mb();
@@ -699,7 +699,7 @@ long do_msgsnd(int msqid, long mtype, vo
}
}

- msq->q_lspid = current->tgid;
+ msq->q_lspid = task_tgid_vnr(current);
msq->q_stime = get_seconds();

if (!pipelined_send(msq, msg)) {
@@ -814,7 +814,7 @@ long do_msgrcv(int msqid, long *pmtype,
list_del(&msg->m_list);
msq->q_qnum--;
msq->q_rtime = get_seconds();
- msq->q_lrpid = current->tgid;
+ msq->q_lrpid = task_tgid_vnr(current);
msq->q_cbytes -= msg->m_ts;
atomic_sub(msg->m_ts, &msg_bytes);
atomic_dec(&msg_hdrs);
diff --git a/ipc/sem.c b/ipc/sem.c
index 0f96683..5b2ef9a 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -797,7 +797,7 @@ static int semctl_main(struct ipc_namesp
for (un = sma->undo; un; un = un->id_next)
un->semadj[semnum] = 0;
curr->semval = val;
- curr->sempid = current->tgid;
+ curr->sempid = task_tgid_vnr(current);
sma->sem_ctime = get_seconds();
/* maybe some queued-up processes were waiting for this */
update_queue(sma);
@@ -1200,7 +1200,7 @@ retry_undos:
if (error)
goto out_unlock_free;

- error = try_atomic_semop (sma, sops, nsops, un, current->tgid);
+ error = try_atomic_semop (sma, sops, nsops, un, task_tgid_vnr(current));
if (error <= 0) {
if (alter && error == 0)
update_queue (sma);
@@ -1215,7 +1215,7 @@ retry_undos:
queue.sops = sops;
queue.nsops = nsops;
queue.undo = un;
- queue.pid = current->tgid;
+ queue.pid = task_tgid_vnr(current);
queue.id = semid;
queue.alter = alter;
if (alter)
@@ -1386,7 +1386,7 @@ found:
semaphore->semval = 0;
if (semaphore->semval > SEMVMX)
semaphore->semval = SEMVMX;
- semaphore->sempid = current->tgid;
+ semaphore->sempid = task_tgid_vnr(current);
}
}
sma->sem_otime = get_seconds();
diff --git a/ipc/shm.c b/ipc/shm.c
index bf28d5f..ae98d4f 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -170,7 +170,7 @@ static void shm_open(struct vm_area_stru
shp = shm_lock(sfd->ns, sfd->id);
BUG_ON(!shp);
shp->shm_atim = get_secon ...

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