initial commitorigin/gh-pagesgithub/gh-pages

1 files changed, 0 insertions, 320 deletions

diff --git a/src/rc/rc-logger.c b/src/rc/rc-logger.c
deleted file mode 100644
index e72f1818..00000000
--- a/src/rc/rc-logger.c
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
-  rc-logger.c
-  Spawns a logging daemon to capture stdout and stderr so we can log
-  them to a buffer and/or files.
-*/
-
-/*
- * Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-
-#include <ctype.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <termios.h>
-#include <time.h>
-#include <unistd.h>
-
-#if defined(__linux__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
-#  include <pty.h>
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
-#  include <util.h>
-#else
-#  include <libutil.h>
-#endif
-
-#include "einfo.h"
-#include "rc-logger.h"
-#include "queue.h"
-#include "rc.h"
-#include "rc-misc.h"
-
-#define TMPLOG RC_SVCDIR "/rc.log"
-#define DEFAULTLOG "/var/log/rc.log"
-
-static int signal_pipe[2] = { -1, -1 };
-static int fd_stdout = -1;
-static int fd_stderr = -1;
-static const char *runlevel = NULL;
-static bool in_escape = false;
-static bool in_term = false;
-
-static char *logbuf = NULL;
-static size_t logbuf_size = 0;
-static size_t logbuf_len = 0;
-
-pid_t rc_logger_pid = -1;
-int rc_logger_tty = -1;
-bool rc_in_logger = false;
-
-static void
-write_log(int logfd, const char *buffer, size_t bytes)
-{
-	const char *p = buffer;
-
-	while ((size_t)(p - buffer) < bytes) {
-		switch (*p) {
-		case '\r':
-			goto cont;
-		case '\033':
-			in_escape = true;
-			in_term = false;
-			goto cont;
-		case '\n':
-			in_escape = in_term = false;
-			break;
-		case '[':
-			if (in_escape)
-				in_term = true;
-			break;
-		}
-
-		if (!in_escape) {
-			if (write(logfd, p++, 1) == -1)
-				eerror("write: %s", strerror(errno));
-			continue;
-		}
-
-		if (! in_term || isalpha((unsigned char)*p))
-			in_escape = in_term = false;
-cont:
-		p++;
-	}
-}
-
-static void
-write_time(FILE *f, const char *s)
-{
-	time_t now = time(NULL);
-	struct tm *tm = localtime(&now);
-
-	fprintf(f, "\nrc %s logging %s at %s\n", runlevel, s, asctime(tm));
-	fflush(f);
-}
-
-void
-rc_logger_close(void)
-{
-	int sig = SIGTERM;
-
-	if (signal_pipe[1] > -1) {
-		if (write(signal_pipe[1], &sig, sizeof(sig)) == -1)
-			eerror("write: %s", strerror(errno));
-		close(signal_pipe[1]);
-		signal_pipe[1] = -1;
-	}
-
-	if (rc_logger_pid > 0)
-		waitpid(rc_logger_pid, 0, 0);
-
-	if (fd_stdout > -1)
-		dup2(fd_stdout, STDOUT_FILENO);
-	if (fd_stderr > -1)
-		dup2(fd_stderr, STDERR_FILENO);
-}
-
-void
-rc_logger_open(const char *level)
-{
-	int slave_tty;
-	struct termios tt;
-	struct winsize ws;
-	char buffer[BUFSIZ];
-	struct pollfd fd[2];
-	int s = 0;
-	size_t bytes;
-	int i;
-	FILE *log = NULL;
-	FILE *plog = NULL;
-	const char *logfile;
-	int log_error = 0;
-
-	if (!rc_conf_yesno("rc_logger"))
-		return;
-
-	if (pipe(signal_pipe) == -1)
-		eerrorx("pipe: %s", strerror(errno));
-	for (i = 0; i < 2; i++)
-		if ((s = fcntl (signal_pipe[i], F_GETFD, 0) == -1 ||
-			fcntl (signal_pipe[i], F_SETFD, s | FD_CLOEXEC) == -1))
-			eerrorx("fcntl: %s", strerror (errno));
-
-	if (isatty(STDOUT_FILENO)) {
-		tcgetattr(STDOUT_FILENO, &tt);
-		ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws);
-		if (openpty(&rc_logger_tty, &slave_tty, NULL, &tt, &ws))
-			return;
-	} else
-		if (openpty(&rc_logger_tty, &slave_tty, NULL, NULL, NULL))
-			return;
-
-	if ((s = fcntl(rc_logger_tty, F_GETFD, 0)) == 0)
-		fcntl(rc_logger_tty, F_SETFD, s | FD_CLOEXEC);
-
-	if ((s = fcntl(slave_tty, F_GETFD, 0)) == 0)
-		fcntl(slave_tty, F_SETFD, s | FD_CLOEXEC);
-
-	rc_logger_pid = fork();
-	switch (rc_logger_pid) {
-	case -1:
-		eerror("fork: %s", strerror(errno));
-		break;
-	case 0:
-		rc_in_logger = true;
-		close(signal_pipe[1]);
-		signal_pipe[1] = -1;
-
-		runlevel = level;
-		if ((log = fopen(TMPLOG, "ae")))
-			write_time(log, "started");
-		else {
-			free(logbuf);
-			logbuf_size = BUFSIZ * 10;
-			logbuf = xmalloc(sizeof (char) * logbuf_size);
-			logbuf_len = 0;
-		}
-
-		fd[0].fd = signal_pipe[0];
-		fd[0].events = fd[1].events = POLLIN;
-		fd[0].revents = fd[1].revents = 0;
-		if (rc_logger_tty >= 0)
-			fd[1].fd = rc_logger_tty;
-		for (;;) {
-			if ((s = poll(fd,
-				    rc_logger_tty >= 0 ? 2 : 1, -1)) == -1)
-			{
-				eerror("poll: %s", strerror(errno));
-				break;
-			} else if (s == 0)
-				continue;
-
-			if (fd[1].revents & (POLLIN | POLLHUP)) {
-				memset(buffer, 0, BUFSIZ);
-				bytes = read(rc_logger_tty, buffer, BUFSIZ);
-				if (write(STDOUT_FILENO, buffer, bytes) == -1)
-					eerror("write: %s", strerror(errno));
-
-				if (log)
-					write_log(fileno (log), buffer, bytes);
-				else {
-					if (logbuf_size - logbuf_len < bytes) {
-						logbuf_size += BUFSIZ * 10;
-						logbuf = xrealloc(logbuf,
-						    sizeof(char ) *
-						    logbuf_size);
-					}
-
-					memcpy(logbuf + logbuf_len,
-					    buffer, bytes);
-					logbuf_len += bytes;
-				}
-			}
-
-			/* Only SIGTERMS signals come down this pipe */
-			if (fd[0].revents & (POLLIN | POLLHUP))
-				break;
-		}
-		if (logbuf) {
-			if ((log = fopen(TMPLOG, "ae"))) {
-				write_time(log, "started");
-				write_log(fileno(log), logbuf, logbuf_len);
-			}
-			free(logbuf);
-		}
-		if (log) {
-			write_time(log, "stopped");
-			fclose(log);
-		}
-
-		/* Append the temporary log to the real log */
-		logfile = rc_conf_value("rc_log_path");
-		if (logfile == NULL)
-			logfile = DEFAULTLOG;
-
-		if ((plog = fopen(logfile, "ae"))) {
-			if ((log = fopen(TMPLOG, "re"))) {
-				while ((bytes = fread(buffer, sizeof(*buffer), BUFSIZ, log)) > 0) {
-					if (fwrite(buffer, sizeof(*buffer), bytes, plog) < bytes) {
-						log_error = 1;
-						eerror("Error: write(%s) failed: %s", logfile, strerror(errno));
-						break;
-					}
-				}
-			} else {
-				log_error = 1;
-				eerror("Error: fopen(%s) failed: %s", TMPLOG, strerror(errno));
-			}
-
-			fclose(log);
-			fclose(plog);
-		} else {
-			/*
-			 * logfile or its basedir may be read-only during sysinit and
-			 * shutdown so skip the error in this case
-			 */
-			if (errno != EROFS && ((strcmp(level, RC_LEVEL_SHUTDOWN) != 0) && (strcmp(level, RC_LEVEL_SYSINIT) != 0))) {
-				log_error = 1;
-				eerror("Error: fopen(%s) failed: %s", logfile, strerror(errno));
-			}
-		}
-
-		/* Try to keep the temporary log in case of errors */
-		if (!log_error) {
-			if (errno != EROFS && ((strcmp(level, RC_LEVEL_SHUTDOWN) != 0) && (strcmp(level, RC_LEVEL_SYSINIT) != 0)))
-				if (unlink(TMPLOG) == -1)
-					eerror("Error: unlink(%s) failed: %s", TMPLOG, strerror(errno));
-		} else if (exists(TMPLOG))
-			eerrorx("Warning: temporary logfile left behind: %s", TMPLOG);
-
-		exit(0);
-		/* NOTREACHED */
-
-	default:
-		setpgid(rc_logger_pid, 0);
-		fd_stdout = dup(STDOUT_FILENO);
-		fd_stderr = dup(STDERR_FILENO);
-		if ((s = fcntl(fd_stdout, F_GETFD, 0)) == 0)
-			fcntl(fd_stdout, F_SETFD, s | FD_CLOEXEC);
-
-		if ((s = fcntl(fd_stderr, F_GETFD, 0)) == 0)
-			fcntl(fd_stderr, F_SETFD, s | FD_CLOEXEC);
-		dup2(slave_tty, STDOUT_FILENO);
-		dup2(slave_tty, STDERR_FILENO);
-		if (slave_tty != STDIN_FILENO &&
-		    slave_tty != STDOUT_FILENO &&
-		    slave_tty != STDERR_FILENO)
-			close(slave_tty);
-		close(signal_pipe[0]);
-		signal_pipe[0] = -1;
-		break;
-	}
-}