842 lines
17 KiB
C
842 lines
17 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* config.c
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*
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* Helper functions for parsing config items.
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* Originally copied from GIT source.
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*
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* Copyright (C) Linus Torvalds, 2005
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* Copyright (C) Johannes Schindelin, 2005
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*
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*/
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#include <errno.h>
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#include <sys/param.h>
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#include "cache.h"
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#include "callchain.h"
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#include <subcmd/exec-cmd.h>
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#include "util/event.h" /* proc_map_timeout */
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#include "util/hist.h" /* perf_hist_config */
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#include "util/llvm-utils.h" /* perf_llvm_config */
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#include "build-id.h"
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#include "debug.h"
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#include "config.h"
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#include "debug.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/string.h>
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#include <linux/zalloc.h>
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#include <linux/ctype.h>
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#define MAXNAME (256)
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#define DEBUG_CACHE_DIR ".debug"
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char buildid_dir[MAXPATHLEN]; /* root dir for buildid, binary cache */
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static FILE *config_file;
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static const char *config_file_name;
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static int config_linenr;
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static int config_file_eof;
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static struct perf_config_set *config_set;
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const char *config_exclusive_filename;
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static int get_next_char(void)
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{
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int c;
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FILE *f;
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c = '\n';
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if ((f = config_file) != NULL) {
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c = fgetc(f);
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if (c == '\r') {
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/* DOS like systems */
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c = fgetc(f);
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if (c != '\n') {
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ungetc(c, f);
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c = '\r';
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}
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}
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if (c == '\n')
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config_linenr++;
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if (c == EOF) {
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config_file_eof = 1;
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c = '\n';
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}
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}
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return c;
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}
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static char *parse_value(void)
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{
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static char value[1024];
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int quote = 0, comment = 0, space = 0;
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size_t len = 0;
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for (;;) {
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int c = get_next_char();
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if (len >= sizeof(value) - 1)
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return NULL;
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if (c == '\n') {
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if (quote)
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return NULL;
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value[len] = 0;
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return value;
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}
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if (comment)
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continue;
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if (isspace(c) && !quote) {
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space = 1;
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continue;
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}
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if (!quote) {
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if (c == ';' || c == '#') {
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comment = 1;
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continue;
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}
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}
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if (space) {
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if (len)
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value[len++] = ' ';
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space = 0;
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}
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if (c == '\\') {
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c = get_next_char();
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switch (c) {
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case '\n':
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continue;
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case 't':
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c = '\t';
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break;
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case 'b':
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c = '\b';
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break;
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case 'n':
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c = '\n';
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break;
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/* Some characters escape as themselves */
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case '\\': case '"':
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break;
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/* Reject unknown escape sequences */
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default:
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return NULL;
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}
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value[len++] = c;
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continue;
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}
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if (c == '"') {
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quote = 1-quote;
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continue;
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}
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value[len++] = c;
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}
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}
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static inline int iskeychar(int c)
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{
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return isalnum(c) || c == '-' || c == '_';
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}
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static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
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{
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int c;
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char *value;
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/* Get the full name */
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for (;;) {
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c = get_next_char();
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if (config_file_eof)
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break;
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if (!iskeychar(c))
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break;
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name[len++] = c;
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if (len >= MAXNAME)
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return -1;
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}
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name[len] = 0;
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while (c == ' ' || c == '\t')
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c = get_next_char();
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value = NULL;
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if (c != '\n') {
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if (c != '=')
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return -1;
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value = parse_value();
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if (!value)
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return -1;
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}
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return fn(name, value, data);
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}
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static int get_extended_base_var(char *name, int baselen, int c)
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{
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do {
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if (c == '\n')
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return -1;
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c = get_next_char();
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} while (isspace(c));
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/* We require the format to be '[base "extension"]' */
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if (c != '"')
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return -1;
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name[baselen++] = '.';
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for (;;) {
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int ch = get_next_char();
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if (ch == '\n')
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return -1;
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if (ch == '"')
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break;
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if (ch == '\\') {
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ch = get_next_char();
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if (ch == '\n')
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return -1;
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}
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name[baselen++] = ch;
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if (baselen > MAXNAME / 2)
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return -1;
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}
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/* Final ']' */
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if (get_next_char() != ']')
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return -1;
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return baselen;
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}
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static int get_base_var(char *name)
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{
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int baselen = 0;
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for (;;) {
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int c = get_next_char();
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if (config_file_eof)
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return -1;
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if (c == ']')
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return baselen;
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if (isspace(c))
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return get_extended_base_var(name, baselen, c);
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if (!iskeychar(c) && c != '.')
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return -1;
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if (baselen > MAXNAME / 2)
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return -1;
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name[baselen++] = tolower(c);
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}
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}
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static int perf_parse_file(config_fn_t fn, void *data)
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{
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int comment = 0;
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int baselen = 0;
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static char var[MAXNAME];
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/* U+FEFF Byte Order Mark in UTF8 */
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static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
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const unsigned char *bomptr = utf8_bom;
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for (;;) {
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int line, c = get_next_char();
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if (bomptr && *bomptr) {
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/* We are at the file beginning; skip UTF8-encoded BOM
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* if present. Sane editors won't put this in on their
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* own, but e.g. Windows Notepad will do it happily. */
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if ((unsigned char) c == *bomptr) {
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bomptr++;
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continue;
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} else {
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/* Do not tolerate partial BOM. */
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if (bomptr != utf8_bom)
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break;
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/* No BOM at file beginning. Cool. */
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bomptr = NULL;
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}
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}
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if (c == '\n') {
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if (config_file_eof)
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return 0;
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comment = 0;
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continue;
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}
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if (comment || isspace(c))
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continue;
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if (c == '#' || c == ';') {
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comment = 1;
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continue;
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}
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if (c == '[') {
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baselen = get_base_var(var);
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if (baselen <= 0)
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break;
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var[baselen++] = '.';
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var[baselen] = 0;
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continue;
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}
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if (!isalpha(c))
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break;
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var[baselen] = tolower(c);
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/*
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* The get_value function might or might not reach the '\n',
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* so saving the current line number for error reporting.
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*/
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line = config_linenr;
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if (get_value(fn, data, var, baselen+1) < 0) {
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config_linenr = line;
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break;
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}
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}
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pr_err("bad config file line %d in %s\n", config_linenr, config_file_name);
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return -1;
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}
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static int parse_unit_factor(const char *end, unsigned long *val)
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{
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if (!*end)
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return 1;
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else if (!strcasecmp(end, "k")) {
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*val *= 1024;
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return 1;
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}
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else if (!strcasecmp(end, "m")) {
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*val *= 1024 * 1024;
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return 1;
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}
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else if (!strcasecmp(end, "g")) {
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*val *= 1024 * 1024 * 1024;
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return 1;
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}
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return 0;
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}
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static int perf_parse_llong(const char *value, long long *ret)
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{
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if (value && *value) {
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char *end;
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long long val = strtoll(value, &end, 0);
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unsigned long factor = 1;
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if (!parse_unit_factor(end, &factor))
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return 0;
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*ret = val * factor;
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return 1;
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}
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return 0;
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}
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static int perf_parse_long(const char *value, long *ret)
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{
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if (value && *value) {
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char *end;
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long val = strtol(value, &end, 0);
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unsigned long factor = 1;
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if (!parse_unit_factor(end, &factor))
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return 0;
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*ret = val * factor;
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return 1;
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}
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return 0;
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}
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static void bad_config(const char *name)
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{
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if (config_file_name)
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pr_warning("bad config value for '%s' in %s, ignoring...\n", name, config_file_name);
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else
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pr_warning("bad config value for '%s', ignoring...\n", name);
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}
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int perf_config_u64(u64 *dest, const char *name, const char *value)
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{
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long long ret = 0;
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if (!perf_parse_llong(value, &ret)) {
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bad_config(name);
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return -1;
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}
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*dest = ret;
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return 0;
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}
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int perf_config_int(int *dest, const char *name, const char *value)
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{
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long ret = 0;
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if (!perf_parse_long(value, &ret)) {
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bad_config(name);
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return -1;
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}
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*dest = ret;
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return 0;
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}
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static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool)
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{
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int ret;
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*is_bool = 1;
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if (!value)
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return 1;
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if (!*value)
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return 0;
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if (!strcasecmp(value, "true") || !strcasecmp(value, "yes") || !strcasecmp(value, "on"))
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return 1;
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if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off"))
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return 0;
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*is_bool = 0;
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return perf_config_int(&ret, name, value) < 0 ? -1 : ret;
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}
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int perf_config_bool(const char *name, const char *value)
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{
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int discard;
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return !!perf_config_bool_or_int(name, value, &discard);
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}
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static const char *perf_config_dirname(const char *name, const char *value)
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{
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if (!name)
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return NULL;
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return value;
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}
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static int perf_buildid_config(const char *var, const char *value)
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{
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/* same dir for all commands */
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if (!strcmp(var, "buildid.dir")) {
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const char *dir = perf_config_dirname(var, value);
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if (!dir) {
|
||
|
|
pr_err("Invalid buildid directory!\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
strncpy(buildid_dir, dir, MAXPATHLEN-1);
|
||
|
|
buildid_dir[MAXPATHLEN-1] = '\0';
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_default_core_config(const char *var __maybe_unused,
|
||
|
|
const char *value __maybe_unused)
|
||
|
|
{
|
||
|
|
if (!strcmp(var, "core.proc-map-timeout"))
|
||
|
|
proc_map_timeout = strtoul(value, NULL, 10);
|
||
|
|
|
||
|
|
/* Add other config variables here. */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_ui_config(const char *var, const char *value)
|
||
|
|
{
|
||
|
|
/* Add other config variables here. */
|
||
|
|
if (!strcmp(var, "ui.show-headers"))
|
||
|
|
symbol_conf.show_hist_headers = perf_config_bool(var, value);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_default_config(const char *var, const char *value,
|
||
|
|
void *dummy __maybe_unused)
|
||
|
|
{
|
||
|
|
if (strstarts(var, "core."))
|
||
|
|
return perf_default_core_config(var, value);
|
||
|
|
|
||
|
|
if (strstarts(var, "hist."))
|
||
|
|
return perf_hist_config(var, value);
|
||
|
|
|
||
|
|
if (strstarts(var, "ui."))
|
||
|
|
return perf_ui_config(var, value);
|
||
|
|
|
||
|
|
if (strstarts(var, "call-graph."))
|
||
|
|
return perf_callchain_config(var, value);
|
||
|
|
|
||
|
|
if (strstarts(var, "llvm."))
|
||
|
|
return perf_llvm_config(var, value);
|
||
|
|
|
||
|
|
if (strstarts(var, "buildid."))
|
||
|
|
return perf_buildid_config(var, value);
|
||
|
|
|
||
|
|
/* Add other config variables here. */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_config_from_file(config_fn_t fn, const char *filename, void *data)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
FILE *f = fopen(filename, "r");
|
||
|
|
|
||
|
|
ret = -1;
|
||
|
|
if (f) {
|
||
|
|
config_file = f;
|
||
|
|
config_file_name = filename;
|
||
|
|
config_linenr = 1;
|
||
|
|
config_file_eof = 0;
|
||
|
|
ret = perf_parse_file(fn, data);
|
||
|
|
fclose(f);
|
||
|
|
config_file_name = NULL;
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *perf_etc_perfconfig(void)
|
||
|
|
{
|
||
|
|
static const char *system_wide;
|
||
|
|
if (!system_wide)
|
||
|
|
system_wide = system_path(ETC_PERFCONFIG);
|
||
|
|
return system_wide;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_env_bool(const char *k, int def)
|
||
|
|
{
|
||
|
|
const char *v = getenv(k);
|
||
|
|
return v ? perf_config_bool(k, v) : def;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_config_system(void)
|
||
|
|
{
|
||
|
|
return !perf_env_bool("PERF_CONFIG_NOSYSTEM", 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_config_global(void)
|
||
|
|
{
|
||
|
|
return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct perf_config_section *find_section(struct list_head *sections,
|
||
|
|
const char *section_name)
|
||
|
|
{
|
||
|
|
struct perf_config_section *section;
|
||
|
|
|
||
|
|
list_for_each_entry(section, sections, node)
|
||
|
|
if (!strcmp(section->name, section_name))
|
||
|
|
return section;
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct perf_config_item *find_config_item(const char *name,
|
||
|
|
struct perf_config_section *section)
|
||
|
|
{
|
||
|
|
struct perf_config_item *item;
|
||
|
|
|
||
|
|
list_for_each_entry(item, §ion->items, node)
|
||
|
|
if (!strcmp(item->name, name))
|
||
|
|
return item;
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct perf_config_section *add_section(struct list_head *sections,
|
||
|
|
const char *section_name)
|
||
|
|
{
|
||
|
|
struct perf_config_section *section = zalloc(sizeof(*section));
|
||
|
|
|
||
|
|
if (!section)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
INIT_LIST_HEAD(§ion->items);
|
||
|
|
section->name = strdup(section_name);
|
||
|
|
if (!section->name) {
|
||
|
|
pr_debug("%s: strdup failed\n", __func__);
|
||
|
|
free(section);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
list_add_tail(§ion->node, sections);
|
||
|
|
return section;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct perf_config_item *add_config_item(struct perf_config_section *section,
|
||
|
|
const char *name)
|
||
|
|
{
|
||
|
|
struct perf_config_item *item = zalloc(sizeof(*item));
|
||
|
|
|
||
|
|
if (!item)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
item->name = strdup(name);
|
||
|
|
if (!item->name) {
|
||
|
|
pr_debug("%s: strdup failed\n", __func__);
|
||
|
|
free(item);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
list_add_tail(&item->node, §ion->items);
|
||
|
|
return item;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int set_value(struct perf_config_item *item, const char *value)
|
||
|
|
{
|
||
|
|
char *val = strdup(value);
|
||
|
|
|
||
|
|
if (!val)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
zfree(&item->value);
|
||
|
|
item->value = val;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int collect_config(const char *var, const char *value,
|
||
|
|
void *perf_config_set)
|
||
|
|
{
|
||
|
|
int ret = -1;
|
||
|
|
char *ptr, *key;
|
||
|
|
char *section_name, *name;
|
||
|
|
struct perf_config_section *section = NULL;
|
||
|
|
struct perf_config_item *item = NULL;
|
||
|
|
struct perf_config_set *set = perf_config_set;
|
||
|
|
struct list_head *sections;
|
||
|
|
|
||
|
|
if (set == NULL)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
sections = &set->sections;
|
||
|
|
key = ptr = strdup(var);
|
||
|
|
if (!key) {
|
||
|
|
pr_debug("%s: strdup failed\n", __func__);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
section_name = strsep(&ptr, ".");
|
||
|
|
name = ptr;
|
||
|
|
if (name == NULL || value == NULL)
|
||
|
|
goto out_free;
|
||
|
|
|
||
|
|
section = find_section(sections, section_name);
|
||
|
|
if (!section) {
|
||
|
|
section = add_section(sections, section_name);
|
||
|
|
if (!section)
|
||
|
|
goto out_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
item = find_config_item(name, section);
|
||
|
|
if (!item) {
|
||
|
|
item = add_config_item(section, name);
|
||
|
|
if (!item)
|
||
|
|
goto out_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* perf_config_set can contain both user and system config items.
|
||
|
|
* So we should know where each value is from.
|
||
|
|
* The classification would be needed when a particular config file
|
||
|
|
* is overwrited by setting feature i.e. set_config().
|
||
|
|
*/
|
||
|
|
if (strcmp(config_file_name, perf_etc_perfconfig()) == 0) {
|
||
|
|
section->from_system_config = true;
|
||
|
|
item->from_system_config = true;
|
||
|
|
} else {
|
||
|
|
section->from_system_config = false;
|
||
|
|
item->from_system_config = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = set_value(item, value);
|
||
|
|
|
||
|
|
out_free:
|
||
|
|
free(key);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_config_set__collect(struct perf_config_set *set, const char *file_name,
|
||
|
|
const char *var, const char *value)
|
||
|
|
{
|
||
|
|
config_file_name = file_name;
|
||
|
|
return collect_config(var, value, set);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_config_set__init(struct perf_config_set *set)
|
||
|
|
{
|
||
|
|
int ret = -1;
|
||
|
|
const char *home = NULL;
|
||
|
|
char *user_config;
|
||
|
|
struct stat st;
|
||
|
|
|
||
|
|
/* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
|
||
|
|
if (config_exclusive_filename)
|
||
|
|
return perf_config_from_file(collect_config, config_exclusive_filename, set);
|
||
|
|
if (perf_config_system() && !access(perf_etc_perfconfig(), R_OK)) {
|
||
|
|
if (perf_config_from_file(collect_config, perf_etc_perfconfig(), set) < 0)
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
home = getenv("HOME");
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Skip reading user config if:
|
||
|
|
* - there is no place to read it from (HOME)
|
||
|
|
* - we are asked not to (PERF_CONFIG_NOGLOBAL=1)
|
||
|
|
*/
|
||
|
|
if (!home || !*home || !perf_config_global())
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
user_config = strdup(mkpath("%s/.perfconfig", home));
|
||
|
|
if (user_config == NULL) {
|
||
|
|
pr_warning("Not enough memory to process %s/.perfconfig, ignoring it.", home);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (stat(user_config, &st) < 0) {
|
||
|
|
if (errno == ENOENT)
|
||
|
|
ret = 0;
|
||
|
|
goto out_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = 0;
|
||
|
|
|
||
|
|
if (st.st_uid && (st.st_uid != geteuid())) {
|
||
|
|
pr_warning("File %s not owned by current user or root, ignoring it.", user_config);
|
||
|
|
goto out_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (st.st_size)
|
||
|
|
ret = perf_config_from_file(collect_config, user_config, set);
|
||
|
|
|
||
|
|
out_free:
|
||
|
|
free(user_config);
|
||
|
|
out:
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct perf_config_set *perf_config_set__new(void)
|
||
|
|
{
|
||
|
|
struct perf_config_set *set = zalloc(sizeof(*set));
|
||
|
|
|
||
|
|
if (set) {
|
||
|
|
INIT_LIST_HEAD(&set->sections);
|
||
|
|
perf_config_set__init(set);
|
||
|
|
}
|
||
|
|
|
||
|
|
return set;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_config__init(void)
|
||
|
|
{
|
||
|
|
if (config_set == NULL)
|
||
|
|
config_set = perf_config_set__new();
|
||
|
|
|
||
|
|
return config_set == NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_config(config_fn_t fn, void *data)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
char key[BUFSIZ];
|
||
|
|
struct perf_config_section *section;
|
||
|
|
struct perf_config_item *item;
|
||
|
|
|
||
|
|
if (config_set == NULL && perf_config__init())
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
perf_config_set__for_each_entry(config_set, section, item) {
|
||
|
|
char *value = item->value;
|
||
|
|
|
||
|
|
if (value) {
|
||
|
|
scnprintf(key, sizeof(key), "%s.%s",
|
||
|
|
section->name, item->name);
|
||
|
|
ret = fn(key, value, data);
|
||
|
|
if (ret < 0) {
|
||
|
|
pr_err("Error: wrong config key-value pair %s=%s\n",
|
||
|
|
key, value);
|
||
|
|
/*
|
||
|
|
* Can't be just a 'break', as perf_config_set__for_each_entry()
|
||
|
|
* expands to two nested for() loops.
|
||
|
|
*/
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void perf_config__exit(void)
|
||
|
|
{
|
||
|
|
perf_config_set__delete(config_set);
|
||
|
|
config_set = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void perf_config__refresh(void)
|
||
|
|
{
|
||
|
|
perf_config__exit();
|
||
|
|
perf_config__init();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void perf_config_item__delete(struct perf_config_item *item)
|
||
|
|
{
|
||
|
|
zfree(&item->name);
|
||
|
|
zfree(&item->value);
|
||
|
|
free(item);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void perf_config_section__purge(struct perf_config_section *section)
|
||
|
|
{
|
||
|
|
struct perf_config_item *item, *tmp;
|
||
|
|
|
||
|
|
list_for_each_entry_safe(item, tmp, §ion->items, node) {
|
||
|
|
list_del_init(&item->node);
|
||
|
|
perf_config_item__delete(item);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void perf_config_section__delete(struct perf_config_section *section)
|
||
|
|
{
|
||
|
|
perf_config_section__purge(section);
|
||
|
|
zfree(§ion->name);
|
||
|
|
free(section);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void perf_config_set__purge(struct perf_config_set *set)
|
||
|
|
{
|
||
|
|
struct perf_config_section *section, *tmp;
|
||
|
|
|
||
|
|
list_for_each_entry_safe(section, tmp, &set->sections, node) {
|
||
|
|
list_del_init(§ion->node);
|
||
|
|
perf_config_section__delete(section);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void perf_config_set__delete(struct perf_config_set *set)
|
||
|
|
{
|
||
|
|
if (set == NULL)
|
||
|
|
return;
|
||
|
|
|
||
|
|
perf_config_set__purge(set);
|
||
|
|
free(set);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Call this to report error for your variable that should not
|
||
|
|
* get a boolean value (i.e. "[my] var" means "true").
|
||
|
|
*/
|
||
|
|
int config_error_nonbool(const char *var)
|
||
|
|
{
|
||
|
|
pr_err("Missing value for '%s'", var);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void set_buildid_dir(const char *dir)
|
||
|
|
{
|
||
|
|
if (dir)
|
||
|
|
scnprintf(buildid_dir, MAXPATHLEN, "%s", dir);
|
||
|
|
|
||
|
|
/* default to $HOME/.debug */
|
||
|
|
if (buildid_dir[0] == '\0') {
|
||
|
|
char *home = getenv("HOME");
|
||
|
|
|
||
|
|
if (home) {
|
||
|
|
snprintf(buildid_dir, MAXPATHLEN, "%s/%s",
|
||
|
|
home, DEBUG_CACHE_DIR);
|
||
|
|
} else {
|
||
|
|
strncpy(buildid_dir, DEBUG_CACHE_DIR, MAXPATHLEN-1);
|
||
|
|
}
|
||
|
|
buildid_dir[MAXPATHLEN-1] = '\0';
|
||
|
|
}
|
||
|
|
/* for communicating with external commands */
|
||
|
|
setenv("PERF_BUILDID_DIR", buildid_dir, 1);
|
||
|
|
}
|