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log: Add a new log target to a file descriptor

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This patch enables logging of text debug messages (pa_log feature) into a file or a device driver.
Example : pulseaudio --log-target=file:./mylog.txt

(Minor tweaks by Colin + Arun)
This commit is contained in:
Vincent Becker 2011-03-18 11:23:46 +01:00 • committed by Colin Guthrie
parent 26366664c1
commit f7acd4bdab
4 changed files with 56 additions and 2 deletions
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27
src/pulsecore/log.c
View file

@ -70,6 +70,7 @@ static pa_log_level_t maximum_level = PA_LOG_ERROR, maximum_level_override = PA_
static unsigned show_backtrace = 0, show_backtrace_override = 0, skip_backtrace = 0;
static pa_log_flags_t flags = 0, flags_override = 0;
static pa_bool_t no_rate_limit = FALSE;
static int log_fd = -1;
#ifdef HAVE_SYSLOG_H
static const int level_to_syslog[] = {
@ -128,6 +129,15 @@ void pa_log_set_flags(pa_log_flags_t _flags, pa_log_merge_t merge) {
flags = _flags;
}
void pa_log_set_fd(int fd) {
if (fd >= 0)
log_fd = fd;
else if (log_fd >= 0) {
pa_close(log_fd);
log_fd = -1;
}
}
void pa_log_set_show_backtrace(unsigned nlevels) {
show_backtrace = nlevels;
}
@ -399,6 +409,23 @@ void pa_log_levelv_meta(
}
#endif
case PA_LOG_FD: {
if (log_fd >= 0) {
char metadata[256];
pa_snprintf(metadata, sizeof(metadata), "\n%c %s %s", level_to_char[level], timestamp, location);
if ((write(log_fd, metadata, strlen(metadata)) < 0) || (write(log_fd, t, strlen(t)) < 0)) {
saved_errno = errno;
pa_log_set_fd(-1);
fprintf(stderr, "%s\n", "Error writing logs to a file descriptor. Redirect log messages to console.");
fprintf(stderr, "%s %s\n", metadata, t);
pa_log_set_target(PA_LOG_STDERR);
}
}
break;
}
case PA_LOG_NULL:
default:
break;