函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\keyring.c Create Date:2022-07-27 19:53:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Garbage collect pointers from a keyring.* Not called with any locks held. The keyring's key struct will not be* deallocated under us as only our caller may deallocate it.

函数原型：void keyring_gc(struct key *keyring, time64_t limit)

返回类型：void

参数：

类型参数名称
struct key *keyring
time64_tlimit
1718  kenter("%x{%s}", key serial number , description ? : "")
1720  如果 status flags (change with bitops) 按位与1左移set if key has been invalidated 位按位或1左移set if key had been revoked 位的值则转到:dont_gc
1725  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
1726  result等于assoc_array_iterate - Pass all objects in the array to a callback*@array: The array to iterate over.*@iterator: The callback function.*@iterator_data: Private data for the callback function.* Iterate over all the objects in an associative array
1728  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
1729  如果(result == true)则转到:do_gc
1732  dont_gc :
1733  kleave(" [no gc]")
1734  返回
1736  do_gc :
1737  lock for writing
1738  assoc_array_gc - Garbage collect an associative array
1740  lease a write lock
1741  kleave(" [gc]")