// SPDX-License-Identifier: GPL-2.0#include "../../builtin.h"#include "../../perf.h"#include "../../util/util.h" // perf_exe()#include "../util.h"#include "../../util/hist.h"#include "../../util/debug.h"#include "../../util/symbol.h"#include "../browser.h"#include "../libslang.h"#include "config.h"#include <linux/string.h>#include <linux/zalloc.h>#include <stdlib.h> #define SCRIPT_NAMELEN	128#define SCRIPT_MAX_NO	64/* * Usually the full path for a script is: *	/home/username/libexec/perf-core/scripts/python/xxx.py *	/home/username/libexec/perf-core/scripts/perl/xxx.pl * So 256 should be long enough to contain the full path. */#define SCRIPT_FULLPATH_LEN	256 struct script_config {	const char **names;	char **paths;	int index;	const char *perf;	char extra_format[256];}; void attr_to_script(char *extra_format, struct perf_event_attr *attr){	extra_format[0] = 0;	if (attr->read_format & PERF_FORMAT_GROUP)		strcat(extra_format, " -F +metric");	if (attr->sample_type & PERF_SAMPLE_BRANCH_STACK)		strcat(extra_format, " -F +brstackinsn --xed");	if (attr->sample_type & PERF_SAMPLE_REGS_INTR)		strcat(extra_format, " -F +iregs");	if (attr->sample_type & PERF_SAMPLE_REGS_USER)		strcat(extra_format, " -F +uregs");	if (attr->sample_type & PERF_SAMPLE_PHYS_ADDR)		strcat(extra_format, " -F +phys_addr");} static int add_script_option(const char *name, const char *opt,			     struct script_config *c){	c->names[c->index] = name;	if (asprintf(&c->paths[c->index],		     "%s script %s -F +metric %s %s",		     c->perf, opt, symbol_conf.inline_name ? " --inline" : "",		     c->extra_format) < 0)		return -1;	c->index++;	return 0;} static int scripts_config(const char *var, const char *value, void *data){	struct script_config *c = data; 	if (!strstarts(var, "scripts."))		return -1;	if (c->index >= SCRIPT_MAX_NO)		return -1;	c->names[c->index] = strdup(var + 7);	if (!c->names[c->index])		return -1;	if (asprintf(&c->paths[c->index], "%s %s", value,		     c->extra_format) < 0)		return -1;	c->index++;	return 0;} /* * When success, will copy the full path of the selected script * into  the buffer pointed by script_name, and return 0. * Return -1 on failure. */static int list_scripts(char *script_name, bool *custom,			struct evsel *evsel){	char *buf, *paths[SCRIPT_MAX_NO], *names[SCRIPT_MAX_NO];	int i, num, choice;	int ret = 0;	int max_std, custom_perf;	char pbuf[256];	const char *perf = perf_exe(pbuf, sizeof pbuf);	struct script_config scriptc = {		.names = (const char **)names,		.paths = paths,		.perf = perf	}; 	script_name[0] = 0; 	/* Preset the script name to SCRIPT_NAMELEN */	buf = malloc(SCRIPT_MAX_NO * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN));	if (!buf)		return -1; 	if (evsel)		attr_to_script(scriptc.extra_format, &evsel->core.attr);	add_script_option("Show individual samples", "", &scriptc);	add_script_option("Show individual samples with assembler", "-F +insn --xed",			  &scriptc);	add_script_option("Show individual samples with source", "-F +srcline,+srccode",			  &scriptc);	perf_config(scripts_config, &scriptc);	custom_perf = scriptc.index;	add_script_option("Show samples with custom perf script arguments", "", &scriptc);	i = scriptc.index;	max_std = i; 	for (; i < SCRIPT_MAX_NO; i++) {		names[i] = buf + (i - max_std) * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN);		paths[i] = names[i] + SCRIPT_NAMELEN;	} 	num = find_scripts(names + max_std, paths + max_std, SCRIPT_MAX_NO - max_std,			SCRIPT_FULLPATH_LEN);	if (num < 0)		num = 0;	choice = ui__popup_menu(num + max_std, (char * const *)names, NULL);	if (choice < 0) {		ret = -1;		goto out;	}	if (choice == custom_perf) {		char script_args[50];		int key = ui_browser__input_window("perf script command",				"Enter perf script command line (without perf script prefix)",				script_args, "", 0);		if (key != K_ENTER) {			ret = -1;			goto out;		}		sprintf(script_name, "%s script %s", perf, script_args);	} else if (choice < num + max_std) {		strcpy(script_name, paths[choice]);	}	*custom = choice >= max_std; out:	free(buf);	for (i = 0; i < max_std; i++)		zfree(&paths[i]);	return ret;} void run_script(char *cmd){	pr_debug("Running %s\n", cmd);	SLang_reset_tty();	if (system(cmd) < 0)		pr_warning("Cannot run %s\n", cmd);	/*	 * SLang doesn't seem to reset the whole terminal, so be more	 * forceful to get back to the original state.	 */	printf("\033[c\033[H\033[J");	fflush(stdout);	SLang_init_tty(0, 0, 0);	SLsmg_refresh();} int script_browse(const char *script_opt, struct evsel *evsel){	char *cmd, script_name[SCRIPT_FULLPATH_LEN];	bool custom = false; 	memset(script_name, 0, SCRIPT_FULLPATH_LEN);	if (list_scripts(script_name, &custom, evsel))		return -1; 	if (asprintf(&cmd, "%s%s %s %s%s 2>&1 | less",			custom ? "perf script -s " : "",			script_name,			script_opt ? script_opt : "",			input_name ? "-i " : "",			input_name ? input_name : "") < 0)		return -1; 	run_script(cmd);	free(cmd); 	return 0;}