perf-eh_elf/util/color.c

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Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS fixes from David Howells: "Here's a set of patches that fix a number of bugs in the in-kernel AFS client, including: - Fix directory locking to not use individual page locks for directory reading/scanning but rather to use a semaphore on the afs_vnode struct as the directory contents must be read in a single blob and data from different reads must not be mixed as the entire contents may be shuffled about between reads. - Fix address list parsing to handle port specifiers correctly. - Only give up callback records on a server if we actually talked to that server (we might not be able to access a server). - Fix some callback handling bugs, including refcounting, whole-volume callbacks and when callbacks actually get broken in response to a CB.CallBack op. - Fix some server/address rotation bugs, including giving up if we can't probe a server; giving up if a server says it doesn't have a volume, but there are more servers to try. - Fix the decoding of fetched statuses to be OpenAFS compatible. - Fix the handling of server lookups in Cache Manager ops (such as CB.InitCallBackState3) to use a UUID if possible and to handle no server being found. - Fix a bug in server lookup where not all addresses are compared. - Fix the non-encryption of calls that prevents some servers from being accessed (this also requires an AF_RXRPC patch that has already gone in through the net tree). There's also a patch that adds tracepoints to log Cache Manager ops that don't find a matching server, either by UUID or by address" * tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Fix the non-encryption of calls afs: Fix CB.CallBack handling afs: Fix whole-volume callback handling afs: Fix afs_find_server search loop afs: Fix the handling of an unfound server in CM operations afs: Add a tracepoint to record callbacks from unlisted servers afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID afs: Fix VNOVOL handling in address rotation afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility afs: Fix server rotation's handling of fileserver probe failure afs: Fix refcounting in callback registration afs: Fix giving up callbacks on server destruction afs: Fix address list parsing afs: Fix directory page locking
2018-05-15 19:48:36 +02:00
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include "cache.h"
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include "color.h"
#include <math.h>
#include <unistd.h>
int perf_use_color_default = -1;
int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
{
if (value) {
if (!strcasecmp(value, "never"))
return 0;
if (!strcasecmp(value, "always"))
return 1;
if (!strcasecmp(value, "auto"))
goto auto_color;
}
/* Missing or explicit false to turn off colorization */
if (!perf_config_bool(var, value))
return 0;
/* any normal truth value defaults to 'auto' */
auto_color:
if (stdout_is_tty < 0)
stdout_is_tty = isatty(1);
if (stdout_is_tty || pager_in_use()) {
char *term = getenv("TERM");
if (term && strcmp(term, "dumb"))
return 1;
}
return 0;
}
int perf_color_default_config(const char *var, const char *value,
void *cb __maybe_unused)
{
if (!strcmp(var, "color.ui")) {
perf_use_color_default = perf_config_colorbool(var, value, -1);
return 0;
}
return 0;
}
static int __color_vsnprintf(char *bf, size_t size, const char *color,
const char *fmt, va_list args, const char *trail)
{
int r = 0;
/*
* Auto-detect:
*/
if (perf_use_color_default < 0) {
if (isatty(1) || pager_in_use())
perf_use_color_default = 1;
else
perf_use_color_default = 0;
}
if (perf_use_color_default && *color)
r += scnprintf(bf, size, "%s", color);
r += vscnprintf(bf + r, size - r, fmt, args);
if (perf_use_color_default && *color)
r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
if (trail)
r += scnprintf(bf + r, size - r, "%s", trail);
return r;
}
/* Colors are not included in return value */
static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
va_list args)
{
int r = 0;
/*
* Auto-detect:
*/
if (perf_use_color_default < 0) {
if (isatty(fileno(fp)) || pager_in_use())
perf_use_color_default = 1;
else
perf_use_color_default = 0;
}
if (perf_use_color_default && *color)
fprintf(fp, "%s", color);
r += vfprintf(fp, fmt, args);
if (perf_use_color_default && *color)
fprintf(fp, "%s", PERF_COLOR_RESET);
return r;
}
int color_vsnprintf(char *bf, size_t size, const char *color,
const char *fmt, va_list args)
{
return __color_vsnprintf(bf, size, color, fmt, args, NULL);
}
int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
{
return __color_vfprintf(fp, color, fmt, args);
}
int color_snprintf(char *bf, size_t size, const char *color,
const char *fmt, ...)
{
va_list args;
int r;
va_start(args, fmt);
r = color_vsnprintf(bf, size, color, fmt, args);
va_end(args);
return r;
}
int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
{
va_list args;
int r;
va_start(args, fmt);
r = color_vfprintf(fp, color, fmt, args);
va_end(args);
return r;
}
/*
* This function splits the buffer by newlines and colors the lines individually.
*
* Returns 0 on success.
*/
int color_fwrite_lines(FILE *fp, const char *color,
size_t count, const char *buf)
{
if (!*color)
return fwrite(buf, count, 1, fp) != 1;
while (count) {
char *p = memchr(buf, '\n', count);
if (p != buf && (fputs(color, fp) < 0 ||
fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
fputs(PERF_COLOR_RESET, fp) < 0))
return -1;
if (!p)
return 0;
if (fputc('\n', fp) < 0)
return -1;
count -= p + 1 - buf;
buf = p + 1;
}
return 0;
}
const char *get_percent_color(double percent)
{
const char *color = PERF_COLOR_NORMAL;
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
*/
if (fabs(percent) >= MIN_RED)
color = PERF_COLOR_RED;
else {
if (fabs(percent) > MIN_GREEN)
color = PERF_COLOR_GREEN;
}
return color;
}
int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
{
int r;
const char *color;
color = get_percent_color(percent);
r = color_fprintf(fp, color, fmt, percent);
return r;
}
int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
{
const char *color = get_percent_color(value);
return color_snprintf(bf, size, color, fmt, value);
}
int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
{
va_list args;
double percent;
va_start(args, fmt);
percent = va_arg(args, double);
va_end(args);
return value_color_snprintf(bf, size, fmt, percent);
}
int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
{
va_list args;
int len;
double percent;
const char *color;
va_start(args, fmt);
len = va_arg(args, int);
percent = va_arg(args, double);
va_end(args);
color = get_percent_color(percent);
return color_snprintf(bf, size, color, fmt, len, percent);
}