y2changes.cc File Reference

#include <errno.h>
#include <fcntl.h>
#include <malloc.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <limits>
#include <list>
#include "y2util/y2changes.h"
#include "y2util/stringutil.h"
#include "y2util/PathInfo.h"
#include <syslog.h>

Macros
#define	_GNU_SOURCE   1 /* Needed for vasprintf below */
#define	Y2CHANGES_DATE   "%Y-%m-%d %H:%M:%S" /* The date format */
#define	Y2CHANGES_FORMAT   "%s <%s> %s "
#define	Y2CHANGES_SYSLOG   "<%d>%s "
#define	Y2CHANGES_MAXSIZE   10* 1024 * 1024 /* Maximal logfile size */
#define	Y2CHANGES_MAXNUM   10 /* Maximum logfiles number */
#define	LOGDIR   "/var/log/YaST2"
#define	Y2CHANGES_ROOT   LOGDIR "/y2changes"
#define	Y2CHANGES_USER   "/.y2changes" /* Relative to $HOME */
#define	Y2CHANGES_FALLBACK   "/y2changes"
#define	Y2CHANGES_VAR_SIZE   "Y2MAXLOGSIZE"
#define	Y2CHANGES_VAR_NUM   "Y2MAXLOGNUM"
#define	Y2CHANGES_FACILITY   "yast2"

Functions
static void	do_log_syslog (const char *logmessage)
static void	do_log_yast (const char *logmessage)
static void	shift_log_files (string filename)
static int	dup_stderr ()
static FILE *	open_logfile ()
string	y2_changesfmt_prefix (logcategory_t category)
void	y2changes_function (logcategory_t category, const char *format,...)
static void	set_log_filename (string fname)
static string	old (const string &filename, int i, const char *suffix)

Variables
static bool	did_set_logname = false
static const char *	logname
static off_t	maxlogsize
static int	maxlognum
static bool	log_to_file = true
static bool	log_to_syslog = false
static FILE *	Y2CHANGES_STDERR = stderr
static const char *	log_messages []
static int	variable_not_used = dup_stderr()

---

Macro Definition Documentation

#define _GNU_SOURCE   1 /* Needed for vasprintf below */

#define LOGDIR   "/var/log/YaST2"

#define Y2CHANGES_DATE   "%Y-%m-%d %H:%M:%S" /* The date format */

Referenced by y2_changesfmt_prefix().

#define Y2CHANGES_FACILITY   "yast2"

#define Y2CHANGES_FALLBACK   "/y2changes"

Referenced by set_log_filename().

#define Y2CHANGES_FORMAT   "%s <%s> %s "

Referenced by y2_changesfmt_prefix().

#define Y2CHANGES_MAXNUM   10 /* Maximum logfiles number */

Referenced by set_log_filename().

#define Y2CHANGES_MAXSIZE   10* 1024 * 1024 /* Maximal logfile size */

Referenced by set_log_filename().

#define Y2CHANGES_ROOT   LOGDIR "/y2changes"

Referenced by set_log_filename().

#define Y2CHANGES_SYSLOG   "<%d>%s "

Referenced by y2changes_function().

#define Y2CHANGES_USER   "/.y2changes" /* Relative to $HOME */

Referenced by set_log_filename().

#define Y2CHANGES_VAR_NUM   "Y2MAXLOGNUM"

Referenced by set_log_filename().

#define Y2CHANGES_VAR_SIZE   "Y2MAXLOGSIZE"

Referenced by set_log_filename().

---

Function Documentation

static void do_log_syslog ( const char *  logmessage )

static

static void do_log_yast ( const char *  logmessage )

static

References did_set_logname, logname, open_logfile(), set_log_filename(), shift_log_files(), and Y2CHANGES_STDERR.

Referenced by y2changes_function().

static int dup_stderr ( )

static

y2changes must use a private copy of stderr, esp. in case we're always logging to it (option "-l -"). Some classes like liby2(ExternalProgram) redirect stderr in order to redirect an external programs error output. As a side effect Y2CHANGES output done after the redirection would show up in the external programs output file instead of yast2's stderr.

References Y2CHANGES_STDERR.

static string old ( const string &  filename, int  i, const char *  suffix  )

static

Referenced by shift_log_files(), and YCPElement::writeCopy().

static FILE* open_logfile ( )

static

References PathInfo::assert_dir(), Pathname::dirname(), logname, and Y2CHANGES_STDERR.

Referenced by do_log_yast().

static void set_log_filename ( string  fname )

static

Logfile name initialization

References did_set_logname, log_to_file, log_to_syslog, logname, maxlognum, maxlogsize, stringutil::strtonum(), Y2CHANGES_FALLBACK, Y2CHANGES_MAXNUM, Y2CHANGES_MAXSIZE, Y2CHANGES_ROOT, Y2CHANGES_STDERR, Y2CHANGES_USER, Y2CHANGES_VAR_NUM, and Y2CHANGES_VAR_SIZE.

static void shift_log_files ( string  filename )

static

Maintain logfiles We do all of this ourselves because during the installation logrotate does not run

References maxlognum, maxlogsize, and old().

Referenced by do_log_yast().

string y2_changesfmt_prefix

(

logcategory_t

category

)

References log_messages, Y2CHANGES_DATE, and Y2CHANGES_FORMAT.

Referenced by y2changes_function().

void y2changes_function	(	logcategory_t	category,
		const char *	format,
			...
	)

The universal logger function

References do_log_yast(), log_to_file, log_to_syslog, y2_changesfmt_prefix(), and Y2CHANGES_SYSLOG.

---

Variable Documentation

bool did_set_logname = false

static

Referenced by do_log_yast(), and set_log_filename().

const char* log_messages[]

static

Initial value:

 {
    "item",
    "note",
}

Referenced by y2_changesfmt_prefix().

bool log_to_file = true

static

Referenced by set_log_filename(), and y2changes_function().

bool log_to_syslog = false

static

Referenced by set_log_filename(), and y2changes_function().

const char* logname

static

Referenced by do_log_yast(), open_logfile(), and set_log_filename().

int maxlognum

static

Referenced by set_log_filename(), and shift_log_files().

off_t maxlogsize

static

Referenced by set_log_filename(), and shift_log_files().

int variable_not_used = dup_stderr()

static

FILE* Y2CHANGES_STDERR = stderr

static

Referenced by do_log_yast(), dup_stderr(), open_logfile(), and set_log_filename().