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capabilities: reverse arguments to security_capable 

security_capable takes ns, cred, cap.  But the LSM capable() hook takes
cred, ns, cap.  The capability helper functions also take cred, ns, cap.
Rather than flip argument order just to flip it back, leave them alone.
Heck, this should be a little faster since argument will be in the right
place!

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2012-01-03 12:25:15 -05:00
parent 6a9de49115
commit b7e724d303
4 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/pci-sysfs.c
View File

@ -431,7 +431,7 @@ pci_read_config(struct file *filp, struct kobject *kobj,
u8 *data = (u8*) buf;
/* Several chips lock up trying to read undefined config space */
if (security_capable(&init_user_ns, filp->f_cred, CAP_SYS_ADMIN) == 0) {
if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0) {
size = dev->cfg_size;
} else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
size = 128;

6
include/linux/security.h
View File

@ -1666,7 +1666,7 @@ int security_capset(struct cred *new, const struct cred *old,
const kernel_cap_t *effective,
const kernel_cap_t *inheritable,
const kernel_cap_t *permitted);
int security_capable(struct user_namespace *ns, const struct cred *cred,
int security_capable(const struct cred *cred, struct user_namespace *ns,
int cap);
int security_real_capable(struct task_struct *tsk, struct user_namespace *ns,
int cap);
@ -1863,8 +1863,8 @@ static inline int security_capset(struct cred *new,
return cap_capset(new, old, effective, inheritable, permitted);
}
static inline int security_capable(struct user_namespace *ns,
const struct cred *cred, int cap)
static inline int security_capable(const struct cred *cred,
struct user_namespace *ns, int cap)
{
return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
}

2
kernel/capability.c
View File

@ -374,7 +374,7 @@ bool ns_capable(struct user_namespace *ns, int cap)
BUG();
}
if (security_capable(ns, current_cred(), cap) == 0) {
if (security_capable(current_cred(), ns, cap) == 0) {
current->flags |= PF_SUPERPRIV;
return true;
}

2
security/security.c
View File

@ -154,7 +154,7 @@ int security_capset(struct cred *new, const struct cred *old,
effective, inheritable, permitted);
}
int security_capable(struct user_namespace *ns, const struct cred *cred,
int security_capable(const struct cred *cred, struct user_namespace *ns,
int cap)
{
return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);