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- add timestamping support via log_tsprintf()

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This commit is contained in:
Babak Farrokhi 2015-10-21 18:04:46 +03:30
parent 58bd6213eb
commit 3ca12815f5
3 changed files with 41 additions and 12 deletions
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43
logfile.c
View File

@ -98,21 +98,46 @@ log_reopen(log_t **log)
void
log_printf(const log_t *log, const char *format,...)
{
if (!log_isopen(log))
return;
va_list args;
char *message;
char *newline = "\n";
/*
* todo: add timestamp and \n example: "Oct 21 13:46:35 %s\n"
*/
va_start(args, format);
vasprintf(&message, format, args);
va_end(args);
if (log_isopen(log)) {
write(log->fd, message, strnlen(message, MAX_MSG_SIZE));
write(log->fd, newline, sizeof(*newline));
}
va_start(args, format);
vasprintf(&message, format, args);
va_end(args);
void
log_tsprintf(const log_t *log, const char *format,...)
{
if (!log_isopen(log))
return;
write(log->fd, message, strnlen(message, MAX_MSG_SIZE));
}
va_list args;
char *message;
char s_time[30];
time_t now;
struct tm *ltime;
size_t tsize;
char *newline = "\n";
va_start(args, format);
vasprintf(&message, format, args);
va_end(args);
now = time(NULL);
ltime = localtime(&now);
tsize = strftime(s_time, sizeof(s_time), "%Y-%m-%d %T %Z - ", ltime);
write(log->fd, s_time, tsize);
write(log->fd, message, strnlen(message, MAX_MSG_SIZE));
write(log->fd, newline, sizeof(*newline));
}
bool

2
logfile.h
View File

@ -40,6 +40,7 @@
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <time.h>
#define LOGPATH "/var/log"
#define MAX_MSG_SIZE 65536
@ -58,5 +59,6 @@ bool log_isopen(const log_t *log);
bool log_verify(const log_t *log);
void log_reopen(log_t **log);
void log_printf(const log_t *log, const char *format,...);
void log_tsprintf(const log_t *log, const char *format,...);
#endif /* _LOGFILE_H */

8
logfile_test.c
View File

@ -42,20 +42,22 @@ main(void)
if ((lh = log_open("test.log", 0600)) == NULL) {
err(EX_IOERR, "Cannot open log file");
}
if (!log_verify(lh))
err(errno, "Failed to verify integrity of log file");
log_printf(lh, "opened file handle: %d , inode: %llu\n", lh->fd, lh->ino);
log_printf(lh, "opened file handle: %d , inode: %llu", lh->fd, lh->ino);
printf("logfile: %s, handle: %d, inode: %llu, mode: %d\n", lh->path, lh->fd, lh->ino, lh->mode);
log_reopen(&lh);
if (!log_verify(lh))
err(errno, "Failed to verify integrity of reopened log file");
log_printf(lh, "reopened file handle: %d , inode: %llu\n", lh->fd, lh->ino);
log_printf(lh, "reopened file handle: %d , inode: %llu", lh->fd, lh->ino);
printf("logfile: %s, handle: %d, inode: %llu, mode: %d\n", lh->path, lh->fd, lh->ino, lh->mode);
for (int i = 1; i <= 4; i++)
log_tsprintf(lh, "This is a time stamped message %d", i);
log_close(lh);
return 0;