Add print_set_logfile() function to specify a log file as another
possible output for messages, beside the standard output and the system
log.
Signed-off-by: Miroslav Lichvar <mlich...@redhat.com>
---
print.c | 22 ++++++++++++++++++++++
print.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/print.c b/print.c
index 6c48e1e..3e8c587 100644
--- a/print.c
+++ b/print.c
@@ -29,6 +29,7 @@ static int print_level = LOG_INFO;
static int use_syslog = 1;
static const char *progname;
static const char *message_tag;
+static FILE *log_file = NULL;
void print_set_progname(const char *name)
{
@@ -55,6 +56,20 @@ void print_set_verbose(int value)
verbose = value ? 1 : 0;
}
+void print_set_logfile(const char *path)
+{
+ if (log_file) {
+ fclose(log_file);
+ log_file = NULL;
+ }
+
+ if (path) {
+ log_file = fopen(path, "a");
+ if (!log_file)
+ pr_err("failed to open %s: %m", path);
+ }
+}
+
void print(int level, char const *format, ...)
{
struct timespec ts;
@@ -80,6 +95,13 @@ void print(int level, char const *format, ...)
buf);
fflush(f);
}
+ if (log_file) {
+ fprintf(log_file, "[%ld.%03ld] %s%s%s\n",
+ ts.tv_sec, ts.tv_nsec / 1000000,
+ message_tag ? message_tag : "", message_tag ? " " : "",
+ buf);
+ fflush(log_file);
+ }
if (use_syslog) {
syslog(level, "[%ld.%03ld] %s%s%s",
ts.tv_sec, ts.tv_nsec / 1000000,
diff --git a/print.h b/print.h
index 1723d8a..338a921 100644
--- a/print.h
+++ b/print.h
@@ -37,6 +37,7 @@ void print_set_tag(const char *tag);
void print_set_syslog(int value);
void print_set_level(int level);
void print_set_verbose(int value);
+void print_set_logfile(const char *path);
#define pr_emerg(x...) print(LOG_EMERG, x)
#define pr_alert(x...) print(LOG_ALERT, x)
--
2.9.3
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