Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\smack\smackfs.c Create Date:2022-07-28 19:28:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:smk_write_doi - write() for /smack/doi*@file: file pointer, not actually used*@buf: where to get the data from*@count: bytes sent*@ppos: where to start* Returns number of bytes written or error code, as appropriate

Proto:static ssize_t smk_write_doi(struct file *file, const char __user *buf, size_t count, loff_t *ppos)

Type:ssize_t

Parameter:

TypeParameterName
struct file *file
const char __user *buf
size_tcount
loff_t *ppos
1579  If Not smack_privileged - are all privilege requirements met*@cap: The requested capability* Is the task privileged and allowed to be privileged* by the onlycap rule.* Returns true if the task is allowed to be privileged, false if it's not. Then Return -EPERM
1582  If count >= size of temp || count == 0 Then Return -EINVAL
1585  If copy_from_user(temp, buf, count) != 0 Then Return -EFAULT
1588  temp[count] = '\0'
1590  If sscanf - Unformat a buffer into a list of arguments*@buf: input buffer*@fmt: formatting of buffer*@...: resulting arguments != 1 Then Return -EINVAL
1593  smk_cipso_doi_value = i
1595  smk_cipso_doi - initialize the CIPSO domain
1597  Return count