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-rw-r--r--security/commoncap.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/security/commoncap.c b/security/commoncap.c
index 5edabc7542ae..0b6537a3672d 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -63,7 +63,8 @@ int cap_settime(struct timespec *ts, struct timezone *tz)
return 0;
}
-int cap_ptrace (struct task_struct *parent, struct task_struct *child)
+int cap_ptrace (struct task_struct *parent, 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) &&
@@ -103,10 +104,16 @@ static inline int cap_inh_is_capped(void)
return (cap_capable(current, CAP_SETPCAP) != 0);
}
+static inline int cap_limit_ptraced_target(void) { return 1; }
+
#else /* ie., ndef CONFIG_SECURITY_FILE_CAPABILITIES */
static inline int cap_block_setpcap(struct task_struct *t) { return 0; }
static inline int cap_inh_is_capped(void) { return 1; }
+static inline int cap_limit_ptraced_target(void)
+{
+ return !capable(CAP_SETPCAP);
+}
#endif /* def CONFIG_SECURITY_FILE_CAPABILITIES */
@@ -342,9 +349,10 @@ void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
bprm->e_uid = current->uid;
bprm->e_gid = current->gid;
}
- if (!capable (CAP_SETPCAP)) {
- new_permitted = cap_intersect (new_permitted,
- current->cap_permitted);
+ if (cap_limit_ptraced_target()) {
+ new_permitted =
+ cap_intersect(new_permitted,
+ current->cap_permitted);
}
}
}