From: Eric W. Biederman Date: Fri, 8 Feb 2008 12:19:16 +0000 (-0800) Subject: pid: fix mips irix emulation pid usage X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=69440e76f6121fe7a5193a82f45ccec08e4bb24b;p=openwrt%2Fstaging%2Fblogic.git pid: fix mips irix emulation pid usage [m.kozlowski@tuxland.pl: fix unbalanced parenthesis in irix_BSDsetpgrp()] Signed-off-by: Eric W. Biederman Cc: Pavel Emelyanov Cc: Oleg Nesterov Cc: Ralf Baechle Signed-off-by: Mariusz Kozlowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c index 7852c7cdf29e..290d8e3a664d 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 5b10ac133ec8..0215c805a592 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 22fd41e946b2..d70c4e0e85fb 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);