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[PATCH] Keys: Pass session keyring to call_usermodehelper()

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The attached patch makes it possible to pass a session keyring through to the
process spawned by call_usermodehelper().  This allows patch 3/3 to pass an
authorisation key through to /sbin/request-key, thus permitting better access
controls when doing just-in-time key creation.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Howells 2005-06-23 22:00:51 -07:00 • committed by Linus Torvalds
parent 76d8aeabfe
commit 7888e7ff4e
4 changed files with 35 additions and 7 deletions
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13
include/linux/kmod.h
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@ -19,6 +19,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/stddef.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/compiler.h>
@ -34,7 +35,17 @@ static inline int request_module(const char * name, ...) { return -ENOSYS; }
#endif
#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x)))
extern int call_usermodehelper(char *path, char *argv[], char *envp[], int wait);
struct key;
extern int call_usermodehelper_keys(char *path, char *argv[], char *envp[],
struct key *session_keyring, int wait);
static inline int
call_usermodehelper(char *path, char **argv, char **envp, int wait)
{
return call_usermodehelper_keys(path, argv, envp, NULL, wait);
}
extern void usermodehelper_init(void);
#endif /* __LINUX_KMOD_H__ */