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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-20 12:39:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-20 12:39:18 +0200 |
| commit | 170465ee7f5a9a2d0ac71285507e52642e040353 (patch) | |
| tree | dbca81f04cde9e625170abbd6a72555cfbeb194e /security/commoncap.c | |
| parent | xen_alloc_ptpage: cast PFN_PHYS() argument to unsigned long (diff) | |
| parent | Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/... (diff) | |
| download | linux-170465ee7f5a9a2d0ac71285507e52642e040353.tar.xz linux-170465ee7f5a9a2d0ac71285507e52642e040353.zip | |
Merge branch 'linus' into x86/xen
Diffstat (limited to 'security/commoncap.c')
| -rw-r--r-- | security/commoncap.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/security/commoncap.c b/security/commoncap.c index 4afbece37a08..e4c4b3fc0c04 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -63,14 +63,24 @@ int cap_settime(struct timespec *ts, struct timezone *tz) return 0; } -int cap_ptrace (struct task_struct *parent, struct task_struct *child, - unsigned int mode) +int cap_ptrace_may_access(struct task_struct *child, unsigned int mode) { /* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */ - if (!cap_issubset(child->cap_permitted, parent->cap_permitted) && - !__capable(parent, CAP_SYS_PTRACE)) - return -EPERM; - return 0; + if (cap_issubset(child->cap_permitted, current->cap_permitted)) + return 0; + if (capable(CAP_SYS_PTRACE)) + return 0; + return -EPERM; +} + +int cap_ptrace_traceme(struct task_struct *parent) +{ + /* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */ + if (cap_issubset(current->cap_permitted, parent->cap_permitted)) + return 0; + if (has_capability(parent, CAP_SYS_PTRACE)) + return 0; + return -EPERM; } int cap_capget (struct task_struct *target, kernel_cap_t *effective, @@ -534,7 +544,7 @@ int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, static inline int cap_safe_nice(struct task_struct *p) { if (!cap_issubset(p->cap_permitted, current->cap_permitted) && - !__capable(current, CAP_SYS_NICE)) + !capable(CAP_SYS_NICE)) return -EPERM; return 0; } |