GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

CRED: Detach the credentials from task_struct

Browse source 
Detach the credentials from task_struct, duplicating them in copy_process()
and releasing them in __put_task_struct().

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells 2008-11-14 10:39:17 +11:00 • committed by James Morris
parent b6dff3ec5e
commit f1752eec61
11 changed files with 179 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

29
include/linux/cred.h
View file

@ -158,4 +158,33 @@ do { \
*(_gid) = current->cred->fsgid; \
} while(0)
extern void __put_cred(struct cred *);
extern int copy_creds(struct task_struct *, unsigned long);
/**
* get_cred - Get a reference on a set of credentials
* @cred: The credentials to reference
*
* Get a reference on the specified set of credentials. The caller must
* release the reference.
*/
static inline struct cred *get_cred(struct cred *cred)
{
atomic_inc(&cred->usage);
return cred;
}
/**
* put_cred - Release a reference to a set of credentials
* @cred: The credentials to release
*
* Release a reference to a set of credentials, deleting them when the last ref
* is released.
*/
static inline void put_cred(struct cred *cred)
{
if (atomic_dec_and_test(&(cred)->usage))
__put_cred(cred);
}
#endif /* _LINUX_CRED_H */