Show information about keyrings (keyringshow)

The keyringshow command displays information about keyrings:

crash> keyringshow -h
usage: keyringshow [-h] (-k KEYRING | -p PID | -a)

print information about keyrings

optional arguments:
  -h, --help            show this help message and exit
  -k KEYRING, --keyring KEYRING
                        print a single keyring
  -p PID, --pid PID     print keyrings for task with pid PID
  -a, --all-tasks       print keyrings for all tasks

• Print a single keyring (-k, --keyring)

• Print keyrings for a specific task (-p, --pid)

• Print keyrings for all tasks (-a, --all-tasks)

Print a single keyring (-k, --keyring)

The "-k" option prints information about a single keyring. The argument is a pointer to a keyring structure:

crash> keyringshow -k 0xff25c6fa776a1700
 <struct key 0xff25c6fa776a1700>
     usage: 23
     serial: 72334391
     expiry 0
     uid: 0
     gid: 0
     perm: 0x3f030000
     type: 0xffffffffb0f19280 (key_type_keyring)
     flags: 0x4 (KEY_FLAG_IN_QUOTA)
     description: _ses
     keys: <struct assoc_array 0xff25c6fa776a17b0>
 <struct key 0xff25c6fa776a0200>
     usage: 1
     serial: 805861861
     expiry 0
     uid: 0
     gid: 0
     perm: 0xb0b0000
     type: 0xffffffffb0f19ac0 (key_type_user)
     flags: 0x4 (KEY_FLAG_IN_QUOTA)
     description: invocation_id

Print keyrings for a specific task (-p, --pid)

The "-p" options prints the keyrings for a specific a task. The argument is the PID of the task to be displayed:

crash> keyringshow -p 1637334
PID=1637334 <struct task_struct 0xff25c6baf5465ac0> CMD=sadc
  cred: 0xff25c6fa7d4543c0
  Session Keyring
  ---------------
     <struct key 0xff25c6fa776a1700>
         usage: 23
         serial: 72334391
         expiry 0
         uid: 0
         gid: 0
         perm: 0x3f030000
         type: 0xffffffffb0f19280 (key_type_keyring)
         flags: 0x4 (KEY_FLAG_IN_QUOTA)
         description: _ses
         keys: <struct assoc_array 0xff25c6fa776a17b0>
     <struct key 0xff25c6fa776a0200>
         usage: 1
         serial: 805861861
         expiry 0
         uid: 0
         gid: 0
         perm: 0xb0b0000
         type: 0xffffffffb0f19ac0 (key_type_user)
         flags: 0x4 (KEY_FLAG_IN_QUOTA)
         description: invocation_id

Print keyrings for all tasks (-a, --all-tasks)

The "-a" option prints the keyrings for all tasks in the system.