diff options
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 54 |
1 files changed, 33 insertions, 21 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 4cfa213a5ac2..23620d52cf37 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -152,7 +152,8 @@ asmlinkage long sys_setpriority(int which, int who, int niceval) switch (which) { case PRIO_PROCESS: if (who) - p = find_task_by_pid(who); + p = find_task_by_pid_ns(who, + current->nsproxy->pid_ns); else p = current; if (p) @@ -160,7 +161,7 @@ asmlinkage long sys_setpriority(int which, int who, int niceval) break; case PRIO_PGRP: if (who) - pgrp = find_pid(who); + pgrp = find_vpid(who); else pgrp = task_pgrp(current); do_each_pid_task(pgrp, PIDTYPE_PGID, p) { @@ -209,7 +210,8 @@ asmlinkage long sys_getpriority(int which, int who) switch (which) { case PRIO_PROCESS: if (who) - p = find_task_by_pid(who); + p = find_task_by_pid_ns(who, + current->nsproxy->pid_ns); else p = current; if (p) { @@ -220,7 +222,7 @@ asmlinkage long sys_getpriority(int which, int who) break; case PRIO_PGRP: if (who) - pgrp = find_pid(who); + pgrp = find_vpid(who); else pgrp = task_pgrp(current); do_each_pid_task(pgrp, PIDTYPE_PGID, p) { @@ -917,9 +919,10 @@ asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) struct task_struct *p; struct task_struct *group_leader = current->group_leader; int err = -EINVAL; + struct pid_namespace *ns; if (!pid) - pid = group_leader->pid; + pid = task_pid_vnr(group_leader); if (!pgid) pgid = pid; if (pgid < 0) @@ -928,10 +931,12 @@ asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) /* From this point forward we keep holding onto the tasklist lock * so that our parent does not change from under us. -DaveM */ + ns = current->nsproxy->pid_ns; + write_lock_irq(&tasklist_lock); err = -ESRCH; - p = find_task_by_pid(pid); + p = find_task_by_pid_ns(pid, ns); if (!p) goto out; @@ -957,9 +962,9 @@ asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) goto out; if (pgid != pid) { - struct task_struct *g = - find_task_by_pid_type(PIDTYPE_PGID, pgid); + struct task_struct *g; + g = find_task_by_pid_type_ns(PIDTYPE_PGID, pgid, ns); if (!g || task_session(g) != task_session(group_leader)) goto out; } @@ -968,10 +973,13 @@ asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) if (err) goto out; - if (task_pgrp_nr(p) != pgid) { + if (task_pgrp_nr_ns(p, ns) != pgid) { + struct pid *pid; + detach_pid(p, PIDTYPE_PGID); - p->signal->pgrp = pgid; - attach_pid(p, PIDTYPE_PGID, find_pid(pgid)); + pid = find_vpid(pgid); + attach_pid(p, PIDTYPE_PGID, pid); + p->signal->pgrp = pid_nr(pid); } err = 0; @@ -984,19 +992,21 @@ out: asmlinkage long sys_getpgid(pid_t pid) { if (!pid) - return task_pgrp_nr(current); + return task_pgrp_vnr(current); else { int retval; struct task_struct *p; + struct pid_namespace *ns; - read_lock(&tasklist_lock); - p = find_task_by_pid(pid); + ns = current->nsproxy->pid_ns; + read_lock(&tasklist_lock); + p = find_task_by_pid_ns(pid, ns); retval = -ESRCH; if (p) { retval = security_task_getpgid(p); if (!retval) - retval = task_pgrp_nr(p); + retval = task_pgrp_nr_ns(p, ns); } read_unlock(&tasklist_lock); return retval; @@ -1008,7 +1018,7 @@ asmlinkage long sys_getpgid(pid_t pid) asmlinkage long sys_getpgrp(void) { /* SMP - assuming writes are word atomic this is fine */ - return task_pgrp_nr(current); + return task_pgrp_vnr(current); } #endif @@ -1016,19 +1026,21 @@ asmlinkage long sys_getpgrp(void) asmlinkage long sys_getsid(pid_t pid) { if (!pid) - return task_session_nr(current); + return task_session_vnr(current); else { int retval; struct task_struct *p; + struct pid_namespace *ns; - read_lock(&tasklist_lock); - p = find_task_by_pid(pid); + ns = current->nsproxy->pid_ns; + read_lock(&tasklist_lock); + p = find_task_by_pid_ns(pid, ns); retval = -ESRCH; if (p) { retval = security_task_getsid(p); if (!retval) - retval = task_session_nr(p); + retval = task_session_nr_ns(p, ns); } read_unlock(&tasklist_lock); return retval; @@ -1065,7 +1077,7 @@ asmlinkage long sys_setsid(void) group_leader->signal->tty = NULL; spin_unlock(&group_leader->sighand->siglock); - err = task_pgrp_nr(group_leader); + err = task_pgrp_vnr(group_leader); out: write_unlock_irq(&tasklist_lock); return err; |