trace_helpers.c File Reference

#include "helpers/trace_helpers.h"
#include <bpf/bpf.h>
#include <bpf/btf.h>
#include <bpf/libbpf.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <time.h>
#include <unistd.h>
#include "helpers/uprobe_helpers.h"

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Classes
struct	ksyms
struct	load_range
struct	dso
struct	map
struct	syms
struct	syms_cache
struct	partitions

Macros
#define	_GNU_SOURCE
#define	min(x, y)
#define	DISK_NAME_LEN   32
#define	MINORBITS   20
#define	MINORMASK   ((1U << MINORBITS) - 1)
#define	MKDEV(ma, mi)   (((ma) << MINORBITS) | (mi))
#define	STARTS_WITH(mapname, prefix)   (!strncmp(mapname, prefix, sizeof(prefix) - 1))

Enumerations
enum	elf_type {   EXEC, DYN, PERF_MAP, VDSO,   UNKNOWN }

Functions
struct ksyms *	ksyms__load (void)
void	ksyms__free (struct ksyms *ksyms)
const struct ksym *	ksyms__map_addr (const struct ksyms *ksyms, unsigned long addr)
const struct ksym *	ksyms__get_symbol (const struct ksyms *ksyms, const char *name)
struct syms *	syms__load_file (const char *fname)
struct syms *	syms__load_pid (pid_t tgid)
void	syms__free (struct syms *syms)
const struct sym *	syms__map_addr (const struct syms *syms, unsigned long addr)
struct syms_cache *	syms_cache__new (int nr)
void	syms_cache__free (struct syms_cache *syms_cache)
struct syms *	syms_cache__get_syms (struct syms_cache *syms_cache, int tgid)
struct partitions *	partitions__load (void)
void	partitions__free (struct partitions *partitions)
const struct partition *	partitions__get_by_dev (const struct partitions *partitions, unsigned int dev)
const struct partition *	partitions__get_by_name (const struct partitions *partitions, const char *name)
void	print_log2_hist (unsigned int *vals, int vals_size, const char *val_type)
void	print_linear_hist (unsigned int *vals, int vals_size, unsigned int base, unsigned int step, const char *val_type)
unsigned long long	get_ktime_ns (void)
bool	is_kernel_module (const char *name)
bool	fentry_can_attach (const char *name, const char *mod)
bool	kprobe_exists (const char *name)
bool	vmlinux_btf_exists (void)
bool	module_btf_exists (const char *mod)

Macro Definition Documentation

_GNU_SOURCE

#define _GNU_SOURCE

DISK_NAME_LEN

#define DISK_NAME_LEN   32

min

#define min	(		x,
			y
	)

Value:

  ({                               \
    typeof(x) _min1 = (x);         \
    typeof(y) _min2 = (y);         \
    (void)(&_min1 == &_min2);      \
    _min1 < _min2 ? _min1 : _min2; \
  })

MINORBITS

#define MINORBITS   20

MINORMASK

#define MINORMASK   ((1U << MINORBITS) - 1)

MKDEV

#define MKDEV	(		ma,
			mi
	)		(((ma) << MINORBITS) | (mi))

STARTS_WITH

#define STARTS_WITH	(		mapname,
			prefix
	)		(!strncmp(mapname, prefix, sizeof(prefix) - 1))

Enumeration Type Documentation

elf_type

enum elf_type

Enumerator
EXEC
DYN
PERF_MAP
VDSO
UNKNOWN

Function Documentation

fentry_can_attach()

bool fentry_can_attach	(	const char *	name,
		const char *	mod
	)

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get_ktime_ns()

unsigned long long get_ktime_ns

(

void

)

is_kernel_module()

bool is_kernel_module

(

const char *

name

)

kprobe_exists()

bool kprobe_exists

(

const char *

name

)

ksyms__free()

void ksyms__free

(

struct ksyms *

ksyms

)

ksyms__get_symbol()

const struct ksym* ksyms__get_symbol	(	const struct ksyms *	ksyms,
		const char *	name
	)

ksyms__load()

struct ksyms* ksyms__load

(

void

)

ksyms__map_addr()

const struct ksym* ksyms__map_addr	(	const struct ksyms *	ksyms,
		unsigned long	addr
	)

module_btf_exists()

bool module_btf_exists

(

const char *

mod

)

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partitions__free()

void partitions__free

(

struct partitions *

partitions

)

partitions__get_by_dev()

const struct partition* partitions__get_by_dev	(	const struct partitions *	partitions,
		unsigned int	dev
	)

partitions__get_by_name()

const struct partition* partitions__get_by_name	(	const struct partitions *	partitions,
		const char *	name
	)

partitions__load()

struct partitions* partitions__load

(

void

)

print_linear_hist()

void print_linear_hist	(	unsigned int *	vals,
		int	vals_size,
		unsigned int	base,
		unsigned int	step,
		const char *	val_type
	)

print_log2_hist()

void print_log2_hist	(	unsigned int *	vals,
		int	vals_size,
		const char *	val_type
	)

syms__free()

void syms__free

(

struct syms *

syms

)

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syms__load_file()

struct syms* syms__load_file

(

const char *

fname

)

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syms__load_pid()

struct syms* syms__load_pid

(

pid_t

tgid

)

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syms__map_addr()

const struct sym* syms__map_addr	(	const struct syms *	syms,
		unsigned long	addr
	)

syms_cache__free()

void syms_cache__free

(

struct syms_cache *

syms_cache

)

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syms_cache__get_syms()

struct syms* syms_cache__get_syms	(	struct syms_cache *	syms_cache,
		int	tgid
	)

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syms_cache__new()

struct syms_cache* syms_cache__new

(

int

nr

)

vmlinux_btf_exists()

bool vmlinux_btf_exists

(

void

)

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