Function report |
Source Code:kernel\printk\printk.c |
Create Date:2022-07-28 10:05:54 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:devkmsg_write
Proto:static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
Type:ssize_t
Parameter:
Type | Parameter | Name |
---|---|---|
struct kiocb * | iocb | |
struct iov_iter * | from |
809 | facility = 1 |
812 | len = iov_iter_count(from) |
815 | If Not user || len > LOG_LINE_MAX Then Return -EINVAL |
819 | If devkmsg_log & DEVKMSG_LOG_MASK_OFF Then Return len |
823 | If Not (devkmsg_log & DEVKMSG_LOG_MASK_ON) Then |
828 | buf = Allocation memory |
833 | If Not copy_from_iter_full(buf, len, from) Then |
835 | Return -EFAULT |
848 | If line[0] == '<' Then |
849 | char * endp = NULL |
863 | devkmsg_emit(facility, level, "%s", line) |
865 | Return ret |
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