diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2012-03-04 05:21:47 +0100 |
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committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-05-03 12:28:51 +0200 |
commit | 5af662030e5db1a5560fd917250d5d688a6be586 (patch) | |
tree | c648c0bf8afe4571cf13b098bd6e24fbce86789c /kernel/ptrace.c | |
parent | userns: Convert setting and getting uid and gid system calls to use kuid and ... (diff) | |
download | linux-5af662030e5db1a5560fd917250d5d688a6be586.tar.xz linux-5af662030e5db1a5560fd917250d5d688a6be586.zip |
userns: Convert ptrace, kill, set_priority permission checks to work with kuids and kgids
Update the permission checks to use the new uid_eq and gid_eq helpers
and remove the now unnecessary user_ns equality comparison.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel/ptrace.c')
-rw-r--r-- | kernel/ptrace.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 24e0a5a94824..a232bb59d93f 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -198,13 +198,12 @@ int __ptrace_may_access(struct task_struct *task, unsigned int mode) return 0; rcu_read_lock(); tcred = __task_cred(task); - if (cred->user_ns == tcred->user_ns && - (cred->uid == tcred->euid && - cred->uid == tcred->suid && - cred->uid == tcred->uid && - cred->gid == tcred->egid && - cred->gid == tcred->sgid && - cred->gid == tcred->gid)) + if (uid_eq(cred->uid, tcred->euid) && + uid_eq(cred->uid, tcred->suid) && + uid_eq(cred->uid, tcred->uid) && + gid_eq(cred->gid, tcred->egid) && + gid_eq(cred->gid, tcred->sgid) && + gid_eq(cred->gid, tcred->gid)) goto ok; if (ptrace_has_cap(tcred->user_ns, mode)) goto ok; |