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authorDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-08-16 18:20:27 +0200
committerDavid Oberhollenzer <david.oberhollenzer@tele2.at>2018-08-16 18:20:27 +0200
commit21b88d935267503a52d12c208145ccf61562c441 (patch)
tree935324dee7409da58ac09ef3852db75558a908dd /syslogd
parentd62ee95689e1e8c6fa4b395adfc8c0fcbca96b6f (diff)
usyslogd: keep track of log file size
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Diffstat (limited to 'syslogd')
-rw-r--r--syslogd/logfile.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/syslogd/logfile.c b/syslogd/logfile.c
index 5f0f98a..2adc136 100644
--- a/syslogd/logfile.c
+++ b/syslogd/logfile.c
@@ -74,6 +74,7 @@ static const enum_map_t facilities[] = {
typedef struct logfile_t {
struct logfile_t *next;
+ size_t size;
int fd;
char filename[];
} logfile_t;
@@ -87,18 +88,26 @@ typedef struct {
static int logfile_open(logfile_t *file)
{
+ struct stat sb;
+
file->fd = open(file->filename, O_WRONLY | O_CREAT, 0640);
if (file->fd < 0) {
perror(file->filename);
return -1;
}
- if (lseek(file->fd, 0, SEEK_END)) {
- close(file->fd);
- return -1;
- }
+ if (lseek(file->fd, 0, SEEK_END))
+ goto fail;
+ if (fstat(file->fd, &sb))
+ goto fail;
+
+ file->size = sb.st_size;
return 0;
+fail:
+ close(file->fd);
+ file->fd = -1;
+ return -1;
}
static logfile_t *logfile_create(const char *filename)
@@ -125,6 +134,7 @@ static int logfile_write(logfile_t *file, const syslog_msg_t *msg)
const char *lvl_str;
char timebuf[32];
struct tm tm;
+ int ret;
if (file->fd < 0 && logfile_open(file) != 0)
return -1;
@@ -136,10 +146,13 @@ static int logfile_write(logfile_t *file, const syslog_msg_t *msg)
gmtime_r(&msg->timestamp, &tm);
strftime(timebuf, sizeof(timebuf), "%FT%T", &tm);
- dprintf(file->fd, "[%s][%s][%u] %s", timebuf, lvl_str, msg->pid,
- msg->message);
+ ret = dprintf(file->fd, "[%s][%s][%u] %s", timebuf, lvl_str, msg->pid,
+ msg->message);
fsync(file->fd);
+
+ if (ret > 0)
+ file->size += ret;
return 0;
}