函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\livepatch\core.c Create Date:2022-07-27 11:30:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：force_store

函数原型：static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)

返回类型：ssize_t

参数：

类型参数名称
struct kobject *kobj
struct kobj_attribute *attr
const char *buf
size_tcount
381  ret等于kstrtobool - convert common user inputs into boolean values*@s: input string*@res: result* This routine returns 0 iff the first character is one of 'Yy1Nn0', or* [oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL. Value
382  如果ret则返回:ret
385  如果非val则返回:count
388  mutex_lock( & klp_mutex is a coarse lock which serializes access to klp data)
390  patch等于container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(kobj, structklp_patch, kobj)
391  如果patch不等于klp_transition_patch则
392  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
393  返回:负EINVAL
396  Drop TIF_PATCH_PENDING of all tasks on admin's request. This forces an* existing transition to finish.* NOTE: klp_update_patch_state(task) requires the task to be inactive or* 'current'. This is not the case here and the consistency model could be* broken
398  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
400  返回:count