/* 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>
#include <stdbool.h>

struct strarray {
        u64         offset;
        int         nr_entries;
        const char *prefix;
        const char * const *entries;
};

#define DEFINE_STRARRAY(array, _prefix) struct strarray strarray__##array = { \
        .nr_entries = ARRAY_SIZE(array), \
        .entries = array, \
        .prefix = _prefix, \
}

#define DEFINE_STRARRAY_OFFSET(array, _prefix, off) struct strarray strarray__##array = { \
        .offset     = off, \
        .nr_entries = ARRAY_SIZE(array), \
        .entries = array, \
        .prefix = _prefix, \
}

size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_prefix, int val);
size_t strarray__scnprintf_suffix(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_suffix, int val);
size_t strarray__scnprintf_flags(struct strarray *sa, char *bf, size_t size, bool show_prefix, unsigned long flags);

bool strarray__strtoul(struct strarray *sa, char *bf, size_t size, u64 *ret);
bool strarray__strtoul_flags(struct strarray *sa, char *bf, size_t size, u64 *ret);

struct trace;
struct thread;

struct file {
        char *pathname;
        int  dev_maj;
};

struct file *thread__files_entry(struct thread *thread, int fd);

struct strarrays {
        int             nr_entries;
        struct strarray **entries;
};

#define DEFINE_STRARRAYS(array) struct strarrays strarrays__##array = { \
        .nr_entries = ARRAY_SIZE(array), \
        .entries = array, \
}

size_t strarrays__scnprintf(struct strarrays *sas, char *bf, size_t size, const char *intfmt, bool show_prefix, int val);

bool strarrays__strtoul(struct strarrays *sas, char *bf, size_t size, u64 *ret);

size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size);

extern struct strarray strarray__socket_families;

extern struct strarray strarray__socket_level;

/**
 * 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/util/bpf_skel/augmented_syscalls.bpf.c that 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[];
};

struct syscall_arg_fmt;

/**
 * @val: value of syscall argument being formatted
 * @len: for tracepoint dynamic arrays, if fmt->nr_entries == 0, then its not a fixed array, look at arg->len
 * @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
 * @show_string_prefix: When there is a common prefix in a string table, show it or not
 */

struct syscall_arg {
        unsigned long val;
        unsigned char *args;
        struct syscall_arg_fmt *fmt;
        struct {
                struct augmented_arg *args;
                int                  size;
        } augmented;
        struct thread *thread;
        struct trace  *trace;
        void          *parm;
        char          *type_name;
        u16           len;
        u8            idx;
        u8            mask;
        bool          show_string_prefix;
};

unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx);

size_t syscall_arg__scnprintf_strarray_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_STRARRAY_FLAGS syscall_arg__scnprintf_strarray_flags

bool syscall_arg__strtoul_strarray(char *bf, size_t size, struct syscall_arg *arg, u64 *ret);
#define STUL_STRARRAY syscall_arg__strtoul_strarray

bool syscall_arg__strtoul_strarray_flags(char *bf, size_t size, struct syscall_arg *arg, u64 *ret);
#define STUL_STRARRAY_FLAGS syscall_arg__strtoul_strarray_flags

bool syscall_arg__strtoul_strarrays(char *bf, size_t size, struct syscall_arg *arg, u64 *ret);
#define STUL_STRARRAYS syscall_arg__strtoul_strarrays

size_t syscall_arg__scnprintf_x86_irq_vectors(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_X86_IRQ_VECTORS syscall_arg__scnprintf_x86_irq_vectors

bool syscall_arg__strtoul_x86_irq_vectors(char *bf, size_t size, struct syscall_arg *arg, u64 *ret);
#define STUL_X86_IRQ_VECTORS syscall_arg__strtoul_x86_irq_vectors

size_t syscall_arg__scnprintf_x86_MSR(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_X86_MSR syscall_arg__scnprintf_x86_MSR

bool syscall_arg__strtoul_x86_MSR(char *bf, size_t size, struct syscall_arg *arg, u64 *ret);
#define STUL_X86_MSR syscall_arg__strtoul_x86_MSR

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_ptr(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_PTR syscall_arg__scnprintf_ptr

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_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FSMOUNT_ATTR_FLAGS syscall_arg__scnprintf_fsmount_attr_flags

size_t syscall_arg__scnprintf_fspick_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FSPICK_FLAGS syscall_arg__scnprintf_fspick_flags

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

unsigned long syscall_arg__mask_val_mount_flags(struct syscall_arg *arg, unsigned long flags);
#define SCAMV_MOUNT_FLAGS syscall_arg__mask_val_mount_flags

size_t syscall_arg__scnprintf_mount_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_MOUNT_FLAGS syscall_arg__scnprintf_mount_flags

size_t syscall_arg__scnprintf_move_mount_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_MOVE_MOUNT_FLAGS syscall_arg__scnprintf_move_mount_flags

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_x86_arch_prctl_code(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_X86_ARCH_PRCTL_CODE syscall_arg__scnprintf_x86_arch_prctl_code

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

extern struct strarray strarray__prctl_options;

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_renameat2_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_RENAMEAT2_FLAGS syscall_arg__scnprintf_renameat2_flags

size_t syscall_arg__scnprintf_sockaddr(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_SOCKADDR syscall_arg__scnprintf_sockaddr

// 'argname' is just documentational at this point, to remove the previous comment with that info
#define SCA_SOCKADDR_FROM_USER(argname) \
          { .scnprintf  = SCA_SOCKADDR, \
            .from_user  = true, }

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_socket_level(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_SK_LEVEL syscall_arg__scnprintf_socket_level

size_t syscall_arg__scnprintf_fs_at_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FS_AT_FLAGS syscall_arg__scnprintf_fs_at_flags

size_t syscall_arg__scnprintf_faccessat2_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FACCESSAT2_FLAGS syscall_arg__scnprintf_faccessat2_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 syscall_arg__scnprintf_sync_file_range_flags(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_SYNC_FILE_RANGE_FLAGS syscall_arg__scnprintf_sync_file_range_flags

size_t syscall_arg__scnprintf_timespec(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_TIMESPEC syscall_arg__scnprintf_timespec

// 'argname' is just documentational at this point, to remove the previous comment with that info
#define SCA_TIMESPEC_FROM_USER(argname) \
          { .scnprintf  = SCA_TIMESPEC, \
            .from_user  = true, }

size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix);

void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
                                    size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg));

#endif /* _PERF_TRACE_BEAUTY_H */