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-rw-r--r--include/linux/cred.h17
1 files changed, 2 insertions, 15 deletions
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 24520a539c6f..4e3387a89cb9 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -15,6 +15,7 @@
15#include <linux/capability.h> 15#include <linux/capability.h>
16#include <linux/init.h> 16#include <linux/init.h>
17#include <linux/key.h> 17#include <linux/key.h>
18#include <linux/selinux.h>
18#include <asm/atomic.h> 19#include <asm/atomic.h>
19 20
20struct user_struct; 21struct user_struct;
@@ -175,21 +176,7 @@ extern void __invalid_creds(const struct cred *, const char *, unsigned);
175extern void __validate_process_creds(struct task_struct *, 176extern void __validate_process_creds(struct task_struct *,
176 const char *, unsigned); 177 const char *, unsigned);
177 178
178static inline bool creds_are_invalid(const struct cred *cred) 179extern bool creds_are_invalid(const struct cred *cred);
179{
180 if (cred->magic != CRED_MAGIC)
181 return true;
182 if (atomic_read(&cred->usage) < atomic_read(&cred->subscribers))
183 return true;
184#ifdef CONFIG_SECURITY_SELINUX
185 if ((unsigned long) cred->security < PAGE_SIZE)
186 return true;
187 if ((*(u32*)cred->security & 0xffffff00) ==
188 (POISON_FREE << 24 | POISON_FREE << 16 | POISON_FREE << 8))
189 return true;
190#endif
191 return false;
192}
193 180
194static inline void __validate_creds(const struct cred *cred, 181static inline void __validate_creds(const struct cred *cred,
195 const char *file, unsigned line) 182 const char *file, unsigned line)