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Index of /FSS-OZR/root/usr/lib/python3.9/site-packages/sos/cleaner
Index of /FSS-OZR/root/usr/lib/python3.9/site-packages/sos/cleaner
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h/3_I|+ W /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_TRACE_SEQ_H
#define _LINUX_TRACE_SEQ_H
#include
#include
/*
* Trace sequences are used to allow a function to call several other functions
* to create a string of data to use (up to a max of PAGE_SIZE).
*/
struct trace_seq {
char buffer[PAGE_SIZE];
struct seq_buf seq;
int full;
};
static inline void
trace_seq_init(struct trace_seq *s)
{
seq_buf_init(&s->seq, s->buffer, PAGE_SIZE);
s->full = 0;
}
/**
* trace_seq_used - amount of actual data written to buffer
* @s: trace sequence descriptor
*
* Returns the amount of data written to the buffer.
*
* IMPORTANT!
*
* Use this instead of @s->seq.len if you need to pass the amount
* of data from the buffer to another buffer (userspace, or what not).
* The @s->seq.len on overflow is bigger than the buffer size and
* using it can cause access to undefined memory.
*/
static inline int trace_seq_used(struct trace_seq *s)
{
return seq_buf_used(&s->seq);
}
/**
* trace_seq_buffer_ptr - return pointer to next location in buffer
* @s: trace sequence descriptor
*
* Returns the pointer to the buffer where the next write to
* the buffer will happen. This is useful to save the location
* that is about to be written to and then return the result
* of that write.
*/
static inline char *
trace_seq_buffer_ptr(struct trace_seq *s)
{
return s->buffer + seq_buf_used(&s->seq);
}
/**
* trace_seq_has_overflowed - return true if the trace_seq took too much
* @s: trace sequence descriptor
*
* Returns true if too much data was added to the trace_seq and it is
* now full and will not take anymore.
*/
static inline bool trace_seq_has_overflowed(struct trace_seq *s)
{
return s->full || seq_buf_has_overflowed(&s->seq);
}
/*
* Currently only defined when tracing is enabled.
*/
#ifdef CONFIG_TRACING
extern __printf(2, 3)
void trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
extern __printf(2, 0)
void trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args);
extern void
trace_seq_bprintf(struct trace_seq *s, const char *fmt, const