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driver core patches for 4.11-rc1

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Here is the "small" driver core patches for 4.11-rc1.
 
 Not much here, some firmware documentation and self-test updates, a
 debugfs code formatting issue, and a new feature for call_usermodehelper
 to make it more robust on systems that want to lock it down in a more
 secure way.
 
 All of these have been linux-next for a while now with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Merge tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the "small" driver core patches for 4.11-rc1.

  Not much here, some firmware documentation and self-test updates, a
  debugfs code formatting issue, and a new feature for call_usermodehelper
  to make it more robust on systems that want to lock it down in a more
  secure way.

  All of these have been linux-next for a while now with no reported
  issues"

* tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kernfs: handle null pointers while printing node name and path
  Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper()
  Make static usermode helper binaries constant
  kmod: make usermodehelper path a const string
  firmware: revamp firmware documentation
  selftests: firmware: send expected errors to /dev/null
  selftests: firmware: only modprobe if driver is missing
  platform: Print the resource range if device failed to claim
  kref: prefer atomic_inc_not_zero to atomic_add_unless
  debugfs: improve formatting of debugfs_real_fops()
This commit is contained in:
Linus Torvalds 2017-02-22 11:44:32 -08:00
commit b2064617c7
27 changed files with 593 additions and 173 deletions
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7
security/keys/request_key.c
View file

@ -72,7 +72,7 @@ static void umh_keys_cleanup(struct subprocess_info *info)
/*
* Call a usermode helper with a specific session keyring.
*/
static int call_usermodehelper_keys(char *path, char **argv, char **envp,
static int call_usermodehelper_keys(const char *path, char **argv, char **envp,
struct key *session_keyring, int wait)
{
struct subprocess_info *info;
@ -95,6 +95,7 @@ static int call_sbin_request_key(struct key_construction *cons,
const char *op,
void *aux)
{
static char const request_key[] = "/sbin/request-key";
const struct cred *cred = current_cred();
key_serial_t prkey, sskey;
struct key *key = cons->key, *authkey = cons->authkey, *keyring,
@ -161,7 +162,7 @@ static int call_sbin_request_key(struct key_construction *cons,
/* set up the argument list */
i = 0;
argv[i++] = "/sbin/request-key";
argv[i++] = (char *)request_key;
argv[i++] = (char *) op;
argv[i++] = key_str;
argv[i++] = uid_str;
@ -172,7 +173,7 @@ static int call_sbin_request_key(struct key_construction *cons,
argv[i] = NULL;
/* do it */
ret = call_usermodehelper_keys(argv[0], argv, envp, keyring,
ret = call_usermodehelper_keys(request_key, argv, envp, keyring,
UMH_WAIT_PROC);
kdebug("usermode -> 0x%x", ret);
if (ret >= 0) {