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sar.c
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/*
* sar: report system activity
* (C) 1999-2020 by Sebastien GODARD (sysstat <at> orange.fr)
*
***************************************************************************
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
* for more details. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program; if not, write to the Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA *
***************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include <signal.h>
#include <sys/stat.h>
#include "version.h"
#include "sa.h"
#ifdef USE_NLS
#include <locale.h>
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
#ifdef USE_SCCSID
#define SCCSID "@(#)sysstat-" VERSION ": " __FILE__ " compiled " __DATE__ " " __TIME__
char *sccsid(void) { return (SCCSID); }
#endif
#ifdef TEST
extern time_t __unix_time;
extern int __env;
#endif
/* Interval and count parameters */
long interval = -1, count = 0;
/* TRUE if a header line must be printed */
int dish = TRUE;
/* TRUE if data read from file don't match current machine's endianness */
int endian_mismatch = FALSE;
/* TRUE if file's data come from a 64 bit machine */
int arch_64 = FALSE;
/* Number of decimal places */
int dplaces_nr = -1;
uint64_t flags = 0;
char timestamp[2][TIMESTAMP_LEN];
extern unsigned int rec_types_nr[];
unsigned long avg_count = 0;
/* File header */
struct file_header file_hdr;
/* Current record header */
struct record_header record_hdr[3];
/*
* Activity sequence.
* This array must always be entirely filled (even with trailing zeros).
*/
unsigned int id_seq[NR_ACT];
struct tm rectime;
/* Contain the date specified by -s and -e options */
struct tstamp tm_start, tm_end;
char *args[MAX_ARGV_NR];
extern struct activity *act[];
extern struct report_format sar_fmt;
struct sigaction int_act;
int sigint_caught = 0;
/*
***************************************************************************
* Print usage title message.
*
* IN:
* @progname Name of sysstat command
***************************************************************************
*/
void print_usage_title(FILE *fp, char *progname)
{
fprintf(fp, _("Usage: %s [ options ] [ <interval> [ <count> ] ]\n"),
progname);
}
/*
***************************************************************************
* Print usage and exit.
*
* IN:
* @progname Name of sysstat command
***************************************************************************
*/
void usage(char *progname)
{
print_usage_title(stderr, progname);
fprintf(stderr, _("Options are:\n"
"[ -A ] [ -B ] [ -b ] [ -C ] [ -D ] [ -d ] [ -F [ MOUNT ] ] [ -H ] [ -h ]\n"
"[ -p ] [ -r [ ALL ] ] [ -S ] [ -t ] [ -u [ ALL ] ] [ -V ]\n"
"[ -v ] [ -W ] [ -w ] [ -y ] [ -z ]\n"
"[ -I { <int_list> | SUM | ALL } ] [ -P { <cpu_list> | ALL } ]\n"
"[ -m { <keyword> [,...] | ALL } ] [ -n { <keyword> [,...] | ALL } ]\n"
"[ -q [ <keyword> [,...] | ALL ] ]\n"
"[ --dev=<dev_list> ] [ --fs=<fs_list> ] [ --iface=<iface_list> ]\n"
"[ --dec={ 0 | 1 | 2 } ] [ --help ] [ --human ] [ --pretty ] [ --sadc ]\n"
"[ -j { SID | ID | LABEL | PATH | UUID | ... } ]\n"
"[ -f [ <filename> ] | -o [ <filename> ] | -[0-9]+ ]\n"
"[ -i <interval> ] [ -s [ <hh:mm[:ss]> ] ] [ -e [ <hh:mm[:ss]> ] ]\n"));
exit(1);
}
/*
***************************************************************************
* Display a short help message and exit.
*
* IN:
* @progname Name of sysstat command
***************************************************************************
*/
void display_help(char *progname)
{
print_usage_title(stdout, progname);
printf(_("Main options and reports (report name between square brackets):\n"));
printf(_("\t-B\tPaging statistics [A_PAGE]\n"));
printf(_("\t-b\tI/O and transfer rate statistics [A_IO]\n"));
printf(_("\t-d\tBlock devices statistics [A_DISK]\n"));
printf(_("\t-F [ MOUNT ]\n"));
printf(_("\t\tFilesystems statistics [A_FS]\n"));
printf(_("\t-H\tHugepages utilization statistics [A_HUGE]\n"));
printf(_("\t-I { <int_list> | SUM | ALL }\n"
"\t\tInterrupts statistics [A_IRQ]\n"));
printf(_("\t-m { <keyword> [,...] | ALL }\n"
"\t\tPower management statistics [A_PWR_...]\n"
"\t\tKeywords are:\n"
"\t\tCPU\tCPU instantaneous clock frequency\n"
"\t\tFAN\tFans speed\n"
"\t\tFREQ\tCPU average clock frequency\n"
"\t\tIN\tVoltage inputs\n"
"\t\tTEMP\tDevices temperature\n"
"\t\tUSB\tUSB devices plugged into the system\n"));
printf(_("\t-n { <keyword> [,...] | ALL }\n"
"\t\tNetwork statistics [A_NET_...]\n"
"\t\tKeywords are:\n"
"\t\tDEV\tNetwork interfaces\n"
"\t\tEDEV\tNetwork interfaces (errors)\n"
"\t\tNFS\tNFS client\n"
"\t\tNFSD\tNFS server\n"
"\t\tSOCK\tSockets\t(v4)\n"
"\t\tIP\tIP traffic\t(v4)\n"
"\t\tEIP\tIP traffic\t(v4) (errors)\n"
"\t\tICMP\tICMP traffic\t(v4)\n"
"\t\tEICMP\tICMP traffic\t(v4) (errors)\n"
"\t\tTCP\tTCP traffic\t(v4)\n"
"\t\tETCP\tTCP traffic\t(v4) (errors)\n"
"\t\tUDP\tUDP traffic\t(v4)\n"
"\t\tSOCK6\tSockets\t(v6)\n"
"\t\tIP6\tIP traffic\t(v6)\n"
"\t\tEIP6\tIP traffic\t(v6) (errors)\n"
"\t\tICMP6\tICMP traffic\t(v6)\n"
"\t\tEICMP6\tICMP traffic\t(v6) (errors)\n"
"\t\tUDP6\tUDP traffic\t(v6)\n"
"\t\tFC\tFibre channel HBAs\n"
"\t\tSOFT\tSoftware-based network processing\n"));
printf(_("\t-q [ <keyword> [,...] | PSI | ALL ]\n"
"\t\tSystem load and pressure-stall statistics\n"
"\t\tKeywords are:\n"
"\t\tLOAD\tQueue length and load average statistics [A_QUEUE]\n"
"\t\tCPU\tPressure-stall CPU statistics [A_PSI_CPU]\n"
"\t\tIO\tPressure-stall I/O statistics [A_PSI_IO]\n"
"\t\tMEM\tPressure-stall memory statistics [A_PSI_MEM]\n"));
printf(_("\t-r [ ALL ]\n"
"\t\tMemory utilization statistics [A_MEMORY]\n"));
printf(_("\t-S\tSwap space utilization statistics [A_MEMORY]\n"));
printf(_("\t-u [ ALL ]\n"
"\t\tCPU utilization statistics [A_CPU]\n"));
printf(_("\t-v\tKernel tables statistics [A_KTABLES]\n"));
printf(_("\t-W\tSwapping statistics [A_SWAP]\n"));
printf(_("\t-w\tTask creation and system switching statistics [A_PCSW]\n"));
printf(_("\t-y\tTTY devices statistics [A_SERIAL]\n"));
exit(0);
}
/*
***************************************************************************
* Give a hint to the user about where is located the data collector.
***************************************************************************
*/
void which_sadc(void)
{
struct stat buf;
if (stat(SADC_PATH, &buf) < 0) {
printf(_("Data collector will be sought in PATH\n"));
}
else {
printf(_("Data collector found: %s\n"), SADC_PATH);
}
exit(0);
}
/*
***************************************************************************
* SIGINT signal handler.
*
* IN:
* @sig Signal number.
***************************************************************************
*/
void int_handler(int sig)
{
sigint_caught = 1;
printf("\n"); /* Skip "^C" displayed on screen */
}
/*
***************************************************************************
* Init some structures.
***************************************************************************
*/
void init_structures(void)
{
int i;
for (i = 0; i < 3; i++)
memset(&record_hdr[i], 0, RECORD_HEADER_SIZE);
}
/*
***************************************************************************
* Allocate memory for sadc args.
*
* IN:
* @i Argument number.
* @ltemp Argument value.
***************************************************************************
*/
void salloc(int i, char *ltemp)
{
if ((args[i] = (char *) malloc(strlen(ltemp) + 1)) == NULL) {
perror("malloc");
exit(4);
}
strcpy(args[i], ltemp);
}
/*
***************************************************************************
* Display an error message.
*
* IN:
* @error_code Code of error message to display.
***************************************************************************
*/
void print_read_error(int error_code)
{
switch (error_code) {
case END_OF_DATA_UNEXPECTED:
/* Happens when the data collector doesn't send enough data */
fprintf(stderr, _("End of data collecting unexpected\n"));
break;
default:
/* Strange data sent by sadc...! */
fprintf(stderr, _("Inconsistent input data\n"));
break;
}
exit(3);
}
/*
***************************************************************************
* Check that every selected activity actually belongs to the sequence list.
* If not, then the activity should be unselected since it will not be sent
* by sadc. An activity can be not sent if its number of items is zero.
*
* IN:
* @act_nr Size of sequence list.
***************************************************************************
*/
void reverse_check_act(unsigned int act_nr)
{
int i, j;
for (i = 0; i < NR_ACT; i++) {
if (IS_SELECTED(act[i]->options)) {
for (j = 0; j < act_nr; j++) {
if (id_seq[j] == act[i]->id)
break;
}
if (j == act_nr)
act[i]->options &= ~AO_SELECTED;
}
}
}
/*
***************************************************************************
* Determine if a stat header line has to be displayed.
*
* RETURNS:
* TRUE if a header line has to be displayed.
***************************************************************************
*/
int check_line_hdr(void)
{
int i, rc = FALSE;
/* Get number of options entered on the command line */
if (get_activity_nr(act, AO_SELECTED, COUNT_OUTPUTS) > 1)
return TRUE;
for (i = 0; i < NR_ACT; i++) {
if (IS_SELECTED(act[i]->options)) {
/* Special processing for activities using a bitmap */
if (act[i]->bitmap) {
if (count_bits(act[i]->bitmap->b_array,
BITMAP_SIZE(act[i]->bitmap->b_size)) > 1) {
rc = TRUE;
}
}
else if (act[i]->nr_ini > 1) {
rc = TRUE;
}
/* Stop now since we have only one selected activity */
break;
}
}
return rc;
}
/*
***************************************************************************
* Print statistics average.
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @act_id Activity that can be displayed, or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
***************************************************************************
*/
void write_stats_avg(int curr, int read_from_file, unsigned int act_id)
{
int i;
unsigned long long itv;
/* Interval value in 1/100th of a second */
itv = get_interval(record_hdr[2].uptime_cs, record_hdr[curr].uptime_cs);
strncpy(timestamp[curr], _("Average:"), sizeof(timestamp[curr]));
timestamp[curr][sizeof(timestamp[curr]) - 1] = '\0';
memcpy(timestamp[!curr], timestamp[curr], sizeof(timestamp[!curr]));
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr[curr] > 0)) {
/* Display current average activity statistics */
(*act[i]->f_print_avg)(act[i], 2, curr, itv);
}
}
if (read_from_file) {
/*
* Reset number of lines printed only if we read stats
* from a system activity file.
*/
avg_count = 0;
}
}
/*
***************************************************************************
* Print system statistics.
* This is called when we read stats either from a file or from sadc.
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @use_tm_start Set to TRUE if option -s has been used.
* @use_tm_end Set to TRUE if option -e has been used.
* @reset Set to TRUE if last_uptime variable should be
* reinitialized (used in next_slice() function).
* @act_id Activity that can be displayed or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
* @reset_cd TRUE if static cross_day variable should be reset
* (see below).
*
* OUT:
* @cnt Number of remaining lines to display.
*
* RETURNS:
* 1 if stats have been successfully displayed, and 0 otherwise.
***************************************************************************
*/
int write_stats(int curr, int read_from_file, long *cnt, int use_tm_start,
int use_tm_end, int reset, unsigned int act_id, int reset_cd)
{
int i, prev_hour;
unsigned long long itv;
static int cross_day = FALSE;
if (reset_cd) {
/*
* cross_day is a static variable that is set to 1 when the first
* record of stats from a new day is read from a unique data file
* (in the case where the file contains data from two consecutive
* days). When set to TRUE, every following records timestamp will
* have its hour value increased by 24.
* Yet when a new activity (being read from the file) is going to
* be displayed, we start reading the file from the beginning
* again, and so cross_day should be reset in this case.
*/
cross_day = FALSE;
}
/* Check time (1) */
if (read_from_file && !next_slice(record_hdr[2].uptime_cs, record_hdr[curr].uptime_cs,
reset, interval))
/* Not close enough to desired interval */
return 0;
/* Get then set previous timestamp */
if (sa_get_record_timestamp_struct(flags + S_F_LOCAL_TIME, &record_hdr[!curr],
&rectime))
return 0;
prev_hour = rectime.tm_hour;
set_record_timestamp_string(flags, &record_hdr[!curr],
NULL, timestamp[!curr], TIMESTAMP_LEN, &rectime);
/* Get then set current timestamp */
if (sa_get_record_timestamp_struct(flags + S_F_LOCAL_TIME, &record_hdr[curr],
&rectime))
return 0;
set_record_timestamp_string(flags, &record_hdr[curr],
NULL, timestamp[curr], TIMESTAMP_LEN, &rectime);
/*
* Check if we are beginning a new day.
* Use rectime.tm_hour and prev_hour instead of record_hdr[].hour for comparison
* to take into account the current timezone (hours displayed will depend on the
* TZ variable value).
*/
if (use_tm_start && record_hdr[!curr].ust_time &&
(record_hdr[curr].ust_time > record_hdr[!curr].ust_time) &&
(rectime.tm_hour < prev_hour)) {
cross_day = TRUE;
}
/* Check time (2) */
if (use_tm_start && (datecmp(&rectime, &tm_start, cross_day) < 0))
/* it's too soon... */
return 0;
/* Get interval value in 1/100th of a second */
get_itv_value(&record_hdr[curr], &record_hdr[!curr], &itv);
/* Check time (3) */
if (use_tm_end && (datecmp(&rectime, &tm_end, cross_day) > 0)) {
/* It's too late... */
*cnt = 0;
return 0;
}
avg_count++;
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr[curr] > 0)) {
/* Display current activity statistics */
(*act[i]->f_print)(act[i], !curr, curr, itv);
}
}
return 1;
}
/*
***************************************************************************
* Display stats since system startup.
*
* IN:
* @curr Index in array for current sample statistics.
***************************************************************************
*/
void write_stats_startup(int curr)
{
int i;
/* Set to 0 previous structures corresponding to boot time */
memset(&record_hdr[!curr], 0, RECORD_HEADER_SIZE);
record_hdr[!curr].record_type = R_STATS;
record_hdr[!curr].hour = record_hdr[curr].hour;
record_hdr[!curr].minute = record_hdr[curr].minute;
record_hdr[!curr].second = record_hdr[curr].second;
record_hdr[!curr].ust_time = record_hdr[curr].ust_time;
for (i = 0; i < NR_ACT; i++) {
if (IS_SELECTED(act[i]->options) && (act[i]->nr[curr] > 0)) {
/*
* Using nr[curr] and not nr[!curr] below because we initialize
* reference structures for each structure that has been
* currently read in memory.
* No problem with buffers allocation since they all have the
* same size.
*/
memset(act[i]->buf[!curr], 0,
(size_t) act[i]->msize * (size_t) act[i]->nr[curr] * (size_t) act[i]->nr2);
}
}
flags |= S_F_SINCE_BOOT;
dish = TRUE;
write_stats(curr, USE_SADC, &count, NO_TM_START, NO_TM_END, NO_RESET,
ALL_ACTIVITIES, TRUE);
exit(0);
}
/*
***************************************************************************
* Read data sent by the data collector.
*
* IN:
* @size Number of bytes of data to read.
*
* OUT:
* @buffer Buffer where data will be saved.
*
* RETURNS:
* 0 if all the data have been successfully read.
* Otherwise, return the number of bytes left to be read.
***************************************************************************
*/
size_t sa_read(void *buffer, size_t size)
{
ssize_t n;
while (size) {
if ((n = read(STDIN_FILENO, buffer, size)) < 0) {
perror("read");
exit(2);
}
if (!n)
return size; /* EOF */
size -= n;
buffer = (char *) buffer + n;
}
return 0;
}
/*
***************************************************************************
* Display a restart message (contents of a R_RESTART record).
*
* IN:
* @tab Number of tabulations (unused here).
* @action Action expected from current function (unused here).
* @cur_date Date string of current restart message (unused here).
* @cur_time Time string of current restart message.
* @utc True if @cur_time is expressed in UTC (unused here).
* @file_hdr System activity file standard header.
* @record_hdr Current record header (unused here).
***************************************************************************
*/
__printf_funct_t print_sar_restart(int *tab, int action, char *cur_date, char *cur_time,
int utc, struct file_header *file_hdr,
struct record_header *record_hdr)
{
char restart[64];
printf("\n%-11s", cur_time);
sprintf(restart, " LINUX RESTART\t(%d CPU)\n",
file_hdr->sa_cpu_nr > 1 ? file_hdr->sa_cpu_nr - 1 : 1);
cprintf_s(IS_RESTART, "%s", restart);
}
/*
***************************************************************************
* Display a comment (contents of R_COMMENT record).
*
* IN:
* @tab Number of tabulations (unused here).
* @action Action expected from current function (unused here).
* @cur_date Date string of current comment (unused here).
* @cur_time Time string of current comment.
* @utc True if @cur_time is expressed in UTC (unused here).
* @comment Comment to display.
* @file_hdr System activity file standard header (unused here).
* @record_hdr Current record header (unused here).
***************************************************************************
*/
__print_funct_t print_sar_comment(int *tab, int action, char *cur_date, char *cur_time, int utc,
char *comment, struct file_header *file_hdr,
struct record_header *record_hdr)
{
printf("%-11s", cur_time);
cprintf_s(IS_COMMENT, " COM %s\n", comment);
}
/*
***************************************************************************
* Read the various statistics sent by the data collector (sadc).
*
* IN:
* @curr Index in array for current sample statistics.
***************************************************************************
*/
void read_sadc_stat_bunch(int curr)
{
int i, p;
/* Read record header (type is always R_STATS since it is read from sadc) */
if (sa_read(&record_hdr[curr], RECORD_HEADER_SIZE)) {
/*
* SIGINT (sent by sadc) is likely to be received
* while we are stuck in sa_read().
* If this happens then no data have to be read.
*/
if (sigint_caught)
return;
#ifdef DEBUG
fprintf(stderr, "%s: Record header\n", __FUNCTION__);
#endif
print_read_error(END_OF_DATA_UNEXPECTED);
}
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (HAS_COUNT_FUNCTION(act[p]->options)) {
if (sa_read(&(act[p]->nr[curr]), sizeof(__nr_t))) {
#ifdef DEBUG
fprintf(stderr, "%s: Nb of items\n", __FUNCTION__);
#endif
print_read_error(END_OF_DATA_UNEXPECTED);
}
if ((act[p]->nr[curr] > act[p]->nr_max) || (act[p]->nr[curr] < 0)) {
#ifdef DEBUG
fprintf(stderr, "%s: %s: nr=%d nr_max=%d\n",
__FUNCTION__, act[p]->name, act[p]->nr[curr], act[p]->nr_max);
#endif
print_read_error(INCONSISTENT_INPUT_DATA);
}
if (act[p]->nr[curr] > act[p]->nr_allocated) {
reallocate_all_buffers(act[p], act[p]->nr[curr]);
}
/*
* For persistent activities, we must make sure that no statistics
* from a previous iteration remain, especially if the number
* of structures read is smaller than @nr_ini.
*/
if (HAS_PERSISTENT_VALUES(act[p]->options)) {
memset(act[p]->buf[curr], 0,
(size_t) act[p]->fsize * (size_t) act[p]->nr_ini * (size_t) act[p]->nr2);
}
}
if (sa_read(act[p]->buf[curr],
(size_t) act[p]->fsize * (size_t) act[p]->nr[curr] * (size_t) act[p]->nr2)) {
#ifdef DEBUG
fprintf(stderr, "%s: Statistics\n", __FUNCTION__);
#endif
print_read_error(END_OF_DATA_UNEXPECTED);
}
}
}
/*
***************************************************************************
* Read current activity's statistics (located between two consecutive
* LINUX RESTART messages) from file and display them.
*
* IN:
* @ifd Input file descriptor.
* @fpos Position in file where reading must start.
* @curr Index in array for current sample statistics.
* @rows Number of rows of screen.
* @act_id Activity to display.
* @file_actlst List of activities in file.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header data.
* @rec_hdr_tmp Temporary buffer where current record header will be saved.
* @endian_mismatch
* TRUE if file's data don't match current machine's endianness.
* @arch_64 TRUE if file's data come from a 64 bit machine.
* @b_size Size of @rec_hdr_tmp buffer.
*
* OUT:
* @curr Index in array for next sample statistics.
* @cnt Number of remaining lines of stats to write.
* @eosaf Set to TRUE if EOF (end of file) has been reached.
* @reset Set to TRUE if last_uptime variable should be reinitialized
* (used in next_slice() function).
***************************************************************************
*/
void handle_curr_act_stats(int ifd, off_t fpos, int *curr, long *cnt, int *eosaf,
int rows, unsigned int act_id, int *reset,
struct file_activity *file_actlst, char *file,
struct file_magic *file_magic, void *rec_hdr_tmp,
int endian_mismatch, int arch_64, size_t b_size)
{
int p, reset_cd;
unsigned long lines = 0;
unsigned char rtype;
int davg = 0, next, inc = 0;
if (lseek(ifd, fpos, SEEK_SET) < fpos) {
perror("lseek");
exit(2);
}
/*
* Restore the first stats collected.
* Used to compute the rate displayed on the first line.
*/
copy_structures(act, id_seq, record_hdr, !*curr, 2);
*cnt = count;
/* Assess number of lines printed when a bitmap is used */
p = get_activity_position(act, act_id, EXIT_IF_NOT_FOUND);
if (act[p]->bitmap) {
inc = count_bits(act[p]->bitmap->b_array,
BITMAP_SIZE(act[p]->bitmap->b_size));
}
reset_cd = 1;
do {
/*
* Display <count> lines of stats.
* Start with reading current sample's record header.
*/
*eosaf = read_record_hdr(ifd, rec_hdr_tmp, &record_hdr[*curr],
&file_hdr, arch_64, endian_mismatch, UEOF_STOP, b_size, flags);
rtype = record_hdr[*curr].record_type;
if ((lines >= rows) || !lines) {
lines = 0;
dish = TRUE;
}
else
dish = FALSE;
if (*eosaf || (rtype == R_RESTART))
/* This is EOF or we have met a LINUX RESTART record: Stop now */
break;
if (rtype != R_COMMENT) {
/* Read the extra fields since it's not a special record */
read_file_stat_bunch(act, *curr, ifd, file_hdr.sa_act_nr, file_actlst,
endian_mismatch, arch_64, file, file_magic, UEOF_STOP);
}
else {
/* Display comment */
next = print_special_record(&record_hdr[*curr], flags + S_F_LOCAL_TIME,
&tm_start, &tm_end, R_COMMENT, ifd,
&rectime, file, 0,
file_magic, &file_hdr, act, &sar_fmt,
endian_mismatch, arch_64);
if (next && lines) {
/*
* A line of comment was actually displayed: Count it in the
* total number of displayed lines.
* If no lines of stats had been previously displayed, ignore it
* to make sure the header line will be displayed.
*/
lines++;
}
continue;
}
/* next is set to 1 when we were close enough to desired interval */
next = write_stats(*curr, USE_SA_FILE, cnt, tm_start.use, tm_end.use,
*reset, act_id, reset_cd);
reset_cd = 0;
if (next && (*cnt > 0)) {
(*cnt)--;
}
if (next) {
davg++;
*curr ^= 1;
if (inc) {
lines += inc;
}
else {
lines += act[p]->nr[*curr];
}
}
*reset = FALSE;
}
while (*cnt);
/*
* At this moment, if we had a R_RESTART record, we still haven't read
* the number of CPU following it (nor the possible extra structures).
* But in this case, we always have @cnt != 0.
*/
if (davg) {
write_stats_avg(!*curr, USE_SA_FILE, act_id);
}
*reset = TRUE;
}
/*
***************************************************************************
* Read header data sent by sadc.
***************************************************************************
*/
void read_header_data(void)
{
struct file_magic file_magic;
struct file_activity file_act;
int rc, i, p;
char version[16];
/* Read magic header */
rc = sa_read(&file_magic, FILE_MAGIC_SIZE);
sprintf(version, "%d.%d.%d.%d",
file_magic.sysstat_version,
file_magic.sysstat_patchlevel,
file_magic.sysstat_sublevel,
file_magic.sysstat_extraversion);
if (!file_magic.sysstat_extraversion) {
version[strlen(version) - 2] = '\0';
}
if (rc || (file_magic.sysstat_magic != SYSSTAT_MAGIC) ||
(file_magic.format_magic != FORMAT_MAGIC) ||
strcmp(version, VERSION)) {
/* sar and sadc commands are not consistent */
if (!rc && (file_magic.sysstat_magic == SYSSTAT_MAGIC)) {
fprintf(stderr,
_("Using a wrong data collector from a different sysstat version\n"));
}
#ifdef DEBUG
fprintf(stderr, "%s: sysstat_magic=%x format_magic=%x version=%s\n",
__FUNCTION__, file_magic.sysstat_magic, file_magic.format_magic, version);
#endif
if (rc == FILE_MAGIC_SIZE) {
/*
* No data (0 byte) have been sent by sadc.
* This is probably because no activities have been collected
* ("Requested activities not available"). In this case, don't
* display an error message: Exit now.
*/
exit(3);
}
print_read_error(INCONSISTENT_INPUT_DATA);
}
/*
* Read header data.
* No need to take into account file_magic.header_size. We are sure that
* sadc and sar are from the same version (we have checked FORMAT_MAGIC
* but also VERSION above) and thus the size of file_header is FILE_HEADER_SIZE.
*/
if (sa_read(&file_hdr, FILE_HEADER_SIZE)) {
#ifdef DEBUG
fprintf(stderr, "%s: File header\n", __FUNCTION__);
#endif
print_read_error(END_OF_DATA_UNEXPECTED);
}
/* All activities are not necessarily selected, but NR_ACT is a max */
if (file_hdr.sa_act_nr > NR_ACT) {
#ifdef DEBUG
fprintf(stderr, "%s: sa_act_nr=%d\n", __FUNCTION__, file_hdr.sa_act_nr);
#endif
print_read_error(INCONSISTENT_INPUT_DATA);
}
if ((file_hdr.act_size != FILE_ACTIVITY_SIZE) ||
(file_hdr.rec_size != RECORD_HEADER_SIZE)) {
#ifdef DEBUG
fprintf(stderr, "%s: act_size=%u/%zu rec_size=%u/%zu\n", __FUNCTION__,
file_hdr.act_size, FILE_ACTIVITY_SIZE, file_hdr.rec_size, RECORD_HEADER_SIZE);
#endif
print_read_error(INCONSISTENT_INPUT_DATA);
}
/* Read activity list */
for (i = 0; i < file_hdr.sa_act_nr; i++) {
if (sa_read(&file_act, FILE_ACTIVITY_SIZE)) {
#ifdef DEBUG
fprintf(stderr, "%s: File activity (%d)\n", __FUNCTION__, i);
#endif
print_read_error(END_OF_DATA_UNEXPECTED);
}
p = get_activity_position(act, file_act.id, RESUME_IF_NOT_FOUND);
if ((p < 0) || (act[p]->fsize != file_act.size)
|| (act[p]->gtypes_nr[0] != file_act.types_nr[0])
|| (act[p]->gtypes_nr[1] != file_act.types_nr[1])
|| (act[p]->gtypes_nr[2] != file_act.types_nr[2])
|| (file_act.nr <= 0)
|| (file_act.nr2 <= 0)
|| (act[p]->magic != file_act.magic)) {
#ifdef DEBUG
if (p < 0) {
fprintf(stderr, "%s: p=%d\n", __FUNCTION__, p);
}
else {
fprintf(stderr, "%s: %s: size=%d/%d magic=%x/%x nr=%d nr2=%d types=%d,%d,%d/%d,%d,%d\n",
__FUNCTION__, act[p]->name, act[p]->fsize, file_act.size,
act[p]->magic, file_act.magic, file_act.nr, file_act.nr2,
act[p]->gtypes_nr[0], act[p]->gtypes_nr[1], act[p]->gtypes_nr[2],
file_act.types_nr[0], file_act.types_nr[1], file_act.types_nr[2]);
}
#endif
/* Remember that we are reading data from sadc and not from a file... */
print_read_error(INCONSISTENT_INPUT_DATA);
}
id_seq[i] = file_act.id; /* We necessarily have "i < NR_ACT" */
act[p]->nr_ini = file_act.nr;
act[p]->nr2 = file_act.nr2;
}
while (i < NR_ACT) {
id_seq[i++] = 0;
}
/* Check that all selected activties are actually sent by sadc */
reverse_check_act(file_hdr.sa_act_nr);
return;
}
/*
***************************************************************************
* Read statistics from a system activity data file.
*
* IN:
* @from_file Input file name.