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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PERF_TRACE_BEAUTY_H
#define _PERF_TRACE_BEAUTY_H
#include <linux/kernel.h>
#include <linux/types.h>
#include <sys/types.h>
struct strarray {
int offset;
int nr_entries;
const char **entries;
};
#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
.nr_entries = ARRAY_SIZE(array), \
.entries = array, \
}
#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
.offset = off, \
.nr_entries = ARRAY_SIZE(array), \
.entries = array, \
}
size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, int val);
struct trace;
struct thread;
size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size);
/**
* augmented_arg: extra payload for syscall pointer arguments
* If perf_sample->raw_size is more than what a syscall sys_enter_FOO puts,
* then its the arguments contents, so that we can show more than just a
* pointer. This will be done initially with eBPF, the start of that is at the
* tools/perf/examples/bpf/augmented_syscalls.c example for the openat, but
* will eventually be done automagically caching the running kernel tracefs
* events data into an eBPF C script, that then gets compiled and its .o file
* cached for subsequent use. For char pointers like the ones for 'open' like
* syscalls its easy, for the rest we should use DWARF or better, BTF, much
* more compact.
*
* @size: 8 if all we need is an integer, otherwise all of the augmented arg.
* @int_arg: will be used for integer like pointer contents, like 'accept's 'upeer_addrlen'
* @value: u64 aligned, for structs, pathnames
*/
struct augmented_arg {
int size;
int int_arg;
u64 value[];
};
/**
* @val: value of syscall argument being formatted
* @args: All the args, use syscall_args__val(arg, nth) to access one
* @augmented_args: Extra data that can be collected, for instance, with eBPF for expanding the pathname for open, etc
* @augmented_args_size: augmented_args total payload size
* @thread: tid state (maps, pid, tid, etc)
* @trace: 'perf trace' internals: all threads, etc
* @parm: private area, may be an strarray, for instance
* @idx: syscall arg idx (is this the first?)
* @mask: a syscall arg may mask another arg, see syscall_arg__scnprintf_futex_op
*/
struct syscall_arg {
unsigned long val;
unsigned char *args;
struct {
struct augmented_arg *args;
int size;
} augmented;
struct thread *thread;
struct trace *trace;
void *parm;
u8 idx;
u8 mask;
};
unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx);
size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_STRARRAYS syscall_arg__scnprintf_strarrays
size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FD syscall_arg__scnprintf_fd
size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_HEX syscall_arg__scnprintf_hex
size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_INT syscall_arg__scnprintf_int
size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_LONG syscall_arg__scnprintf_long
size_t syscall_arg__scnprintf_pid(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PID syscall_arg__scnprintf_pid
size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_CLONE_FLAGS syscall_arg__scnprintf_clone_flags
size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FCNTL_CMD syscall_arg__scnprintf_fcntl_cmd
size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FCNTL_ARG syscall_arg__scnprintf_fcntl_arg
size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FLOCK syscall_arg__scnprintf_flock
size_t syscall_arg__scnprintf_ioctl_cmd(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_IOCTL_CMD syscall_arg__scnprintf_ioctl_cmd
size_t syscall_arg__scnprintf_kcmp_type(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_KCMP_TYPE syscall_arg__scnprintf_kcmp_type
size_t syscall_arg__scnprintf_kcmp_idx(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_KCMP_IDX syscall_arg__scnprintf_kcmp_idx
size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PKEY_ALLOC_ACCESS_RIGHTS syscall_arg__scnprintf_pkey_alloc_access_rights
size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
size_t syscall_arg__scnprintf_prctl_option(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PRCTL_OPTION syscall_arg__scnprintf_prctl_option
size_t syscall_arg__scnprintf_prctl_arg2(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PRCTL_ARG2 syscall_arg__scnprintf_prctl_arg2
size_t syscall_arg__scnprintf_prctl_arg3(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PRCTL_ARG3 syscall_arg__scnprintf_prctl_arg3
size_t syscall_arg__scnprintf_socket_protocol(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_SK_PROTO syscall_arg__scnprintf_socket_protocol
size_t syscall_arg__scnprintf_statx_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_STATX_FLAGS syscall_arg__scnprintf_statx_flags
size_t syscall_arg__scnprintf_statx_mask(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_STATX_MASK syscall_arg__scnprintf_statx_mask
size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size);
void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg));
const char *arch_syscalls__strerrno(const char *arch, int err);
#endif /* _PERF_TRACE_BEAUTY_H */
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