/*
***************************************************************************
* Read next sample statistics. If it's a special record (RESTART or COMMENT)
* then display it if requested. Also fill timestamps structures.
*
* IN:
* @ifd File descriptor
* @action Flags indicating if special records should be displayed or not.
*
* @curr Index in array for current sample statistics.
* @file System activity data file name (name of file being read).
* @rtype Record type (RESTART, COMMENT, etc.)
* @tab Number of tabulations to print.
* @file_actlst List of (known or unknown) activities in file.
* @file_magic System activity file magic header.
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether options -T/-t have been used or not) can
* be saved for current record.
* @loctime Structure where timestamp (expressed in local time) can be
* saved for current record.
*
* OUT:
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether options -T/-t have been used or not) has
* been saved for current record.
* @loctime Structure where timestamp (expressed in local time) has been
* saved for current record.
*
* RETURNS:
* TRUE if end of file has been reached.
***************************************************************************
*/
int read_next_sample(int ifd, int action, int curr, char *file, int *rtype, int tab,
struct file_magic *file_magic, struct file_activity *file_actlst,
struct tm *rectime, struct tm *loctime)
{
int eosaf;
/* Read current record */
eosaf = sa_fread(ifd, &record_hdr[curr], RECORD_HEADER_SIZE, SOFT_SIZE);
*rtype = record_hdr[curr].record_type;
if (!eosaf) {
if (*rtype == R_COMMENT) {
if (action & IGNORE_COMMENT) {
/* Ignore COMMENT record */
if (lseek(ifd, MAX_COMMENT_LEN, SEEK_CUR) < MAX_COMMENT_LEN) {
perror("lseek");
}
}
else {
/* Display COMMENT record */
print_special_record(curr, tm_start.use, tm_end.use, *rtype, ifd,
rectime, loctime, file, tab, file_magic);
}
}
else if (*rtype == R_RESTART) {
if (action & IGNORE_RESTART) {
/*
* Ignore RESTART record (don't display it)
* but anyway we have to reallocate volatile
* activities structures (unless we don't want to
* do it now).
*/
if (!(action & DONT_READ_VOLATILE)) {
read_vol_act_structures(ifd, act, file, file_magic,
file_hdr.sa_vol_act_nr);
}
}
else {
/* Display RESTART record */
print_special_record(curr, tm_start.use, tm_end.use, *rtype, ifd,
rectime, loctime, file, tab, file_magic);
}
}
else {
/*
* OK: Previous record was not a special one.
* So read now the extra fields.
*/
read_file_stat_bunch(act, curr, ifd, file_hdr.sa_act_nr,
file_actlst);
sa_get_record_timestamp_struct(flags, &record_hdr[curr], rectime, loctime);
}
}
return eosaf;
}
/*
***************************************************************************
* Print contents of a special (RESTART or COMMENT) record.
*
* IN:
* @curr Index in array for current sample statistics.
* @use_tm_start Set to TRUE if option -s has been used.
* @use_tm_end Set to TRUE if option -e has been used.
* @rtype Record type (RESTART or COMMENT).
* @ifd Input file descriptor.
* @rectime Structure where timestamp (expressed in local time
* or in UTC depending on whether options -T/-t have
* been used or not) can be saved for current record.
* @loctime Structure where timestamp (expressed in local time)
* can be saved for current record.
* @file Name of file being read.
* @tab Number of tabulations to print.
* @file_magic file_magic structure filled with file magic header
* data.
***************************************************************************
*/
void print_special_record(int curr, int use_tm_start, int use_tm_end, int rtype, int ifd,
struct tm *rectime, struct tm *loctime, char *file, int tab,
struct file_magic *file_magic)
{
char cur_date[32], cur_time[32];
int dp = 1;
unsigned int new_cpu_nr;
/* Fill timestamp structure (rectime) for current record */
sa_get_record_timestamp_struct(flags, &record_hdr[curr], rectime, loctime);
/* The record must be in the interval specified by -s/-e options */
if ((use_tm_start && (datecmp(loctime, &tm_start) < 0)) ||
(use_tm_end && (datecmp(loctime, &tm_end) > 0))) {
/* Will not display the special record */
dp = 0;
}
else {
/* Set date and time strings to be displayed for current record */
set_record_timestamp_string(curr, cur_date, cur_time, 32, rectime);
}
if (rtype == R_RESTART) {
/* Don't forget to read the volatile activities structures */
new_cpu_nr = read_vol_act_structures(ifd, act, file, file_magic,
file_hdr.sa_vol_act_nr);
if (!dp)
return;
if (*fmt[f_position]->f_restart) {
(*fmt[f_position]->f_restart)(&tab, F_MAIN, cur_date, cur_time,
!PRINT_LOCAL_TIME(flags) &&
!PRINT_TRUE_TIME(flags), &file_hdr,
new_cpu_nr);
}
}
else if (rtype == R_COMMENT) {
char file_comment[MAX_COMMENT_LEN];
/* Read and replace non printable chars in comment */
replace_nonprintable_char(ifd, file_comment);
if (!dp || !DISPLAY_COMMENT(flags))
return;
if (*fmt[f_position]->f_comment) {
(*fmt[f_position]->f_comment)(&tab, F_MAIN, cur_date, cur_time,
!PRINT_LOCAL_TIME(flags) &&
!PRINT_TRUE_TIME(flags), file_comment,
&file_hdr);
}
}
}
/*
***************************************************************************
* Print a Linux restart message (contents of a RESTART record) or a
* comment (contents of a COMMENT record).
*
* IN:
* @curr Index in array for current sample statistics.
* @use_tm_start Set to TRUE if option -s has been used.
* @use_tm_end Set to TRUE if option -e has been used.
* @rtype Record type to display.
* @ifd Input file descriptor.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header
* data.
*
* RETURNS:
* 1 if the record has been successfully displayed, and 0 otherwise.
***************************************************************************
*/
int sar_print_special(int curr, int use_tm_start, int use_tm_end, int rtype,
int ifd, char *file, struct file_magic *file_magic)
{
char cur_time[26], restart[64];
int dp = 1;
unsigned int new_cpu_nr;
if (set_record_timestamp_string(curr, cur_time, 26))
return 0;
/* The record must be in the interval specified by -s/-e options */
if ((use_tm_start && (datecmp(&rectime, &tm_start) < 0)) ||
(use_tm_end && (datecmp(&rectime, &tm_end) > 0))) {
dp = 0;
}
if (rtype == R_RESTART) {
/* Don't forget to read the volatile activities structures */
new_cpu_nr = read_vol_act_structures(ifd, act, file, file_magic,
file_hdr.sa_vol_act_nr);
if (dp) {
printf("\n%-11s", cur_time);
sprintf(restart, " LINUX RESTART\t(%d CPU)\n",
new_cpu_nr > 1 ? new_cpu_nr - 1 : 1);
cprintf_s(IS_RESTART, "%s", restart);
return 1;
}
}
else if (rtype == R_COMMENT) {
char file_comment[MAX_COMMENT_LEN];
/* Don't forget to read comment record even if it won't be displayed... */
replace_nonprintable_char(ifd, file_comment);
if (dp && DISPLAY_COMMENT(flags)) {
printf("%-11s", cur_time);
cprintf_s(IS_COMMENT, " COM %s\n", file_comment);
return 1;
}
}
return 0;
}
