diff options
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 26 |
1 files changed, 9 insertions, 17 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index f0c43b4b665..39962818c00 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -175,7 +175,6 @@ SYSCALL_DEFINE3(setpriority, int, which, int, who, int, niceval) const struct cred *cred = current_cred(); int error = -EINVAL; struct pid *pgrp; - kuid_t cred_uid; kuid_t uid; if (which > PRIO_USER || which < PRIO_PROCESS) @@ -209,22 +208,19 @@ SYSCALL_DEFINE3(setpriority, int, which, int, who, int, niceval) } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); break; case PRIO_USER: - cred_uid = make_kuid(cred->user_ns, cred->uid); uid = make_kuid(cred->user_ns, who); user = cred->user; if (!who) - uid = cred_uid; - else if (!uid_eq(uid, cred_uid) && + uid = cred->uid; + else if (!uid_eq(uid, cred->uid) && !(user = find_user(uid))) goto out_unlock; /* No processes for this user */ do_each_thread(g, p) { - const struct cred *tcred = __task_cred(p); - kuid_t tcred_uid = make_kuid(tcred->user_ns, tcred->uid); - if (uid_eq(tcred_uid, uid)) + if (uid_eq(task_uid(p), uid)) error = set_one_prio(p, niceval, error); } while_each_thread(g, p); - if (!uid_eq(uid, cred_uid)) + if (!uid_eq(uid, cred->uid)) free_uid(user); /* For find_user() */ break; } @@ -248,7 +244,6 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who) const struct cred *cred = current_cred(); long niceval, retval = -ESRCH; struct pid *pgrp; - kuid_t cred_uid; kuid_t uid; if (which > PRIO_USER || which < PRIO_PROCESS) @@ -280,25 +275,22 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who) } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); break; case PRIO_USER: - cred_uid = make_kuid(cred->user_ns, cred->uid); uid = make_kuid(cred->user_ns, who); user = cred->user; if (!who) - uid = cred_uid; - else if (!uid_eq(uid, cred_uid) && + uid = cred->uid; + else if (!uid_eq(uid, cred->uid) && !(user = find_user(uid))) goto out_unlock; /* No processes for this user */ do_each_thread(g, p) { - const struct cred *tcred = __task_cred(p); - kuid_t tcred_uid = make_kuid(tcred->user_ns, tcred->uid); - if (uid_eq(tcred_uid, uid)) { + if (uid_eq(task_uid(p), uid)) { niceval = 20 - task_nice(p); if (niceval > retval) retval = niceval; } } while_each_thread(g, p); - if (!uid_eq(uid, cred_uid)) + if (!uid_eq(uid, cred->uid)) free_uid(user); /* for find_user() */ break; } @@ -641,7 +633,7 @@ static int set_user(struct cred *new) { struct user_struct *new_user; - new_user = alloc_uid(make_kuid(new->user_ns, new->uid)); + new_user = alloc_uid(new->uid); if (!new_user) return -EAGAIN; |