From f13df3752cd5077622201e6b69c71cd7cd5095a4 Mon Sep 17 00:00:00 2001 From: Erik Andersen Date: Tue, 18 Apr 2000 23:51:51 +0000 Subject: More stuff -Erik --- sysklogd/syslogd.c | 149 ++++++++++++++++++++++++++--------------------------- 1 file changed, 72 insertions(+), 77 deletions(-) (limited to 'sysklogd') diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c index 228d0a17a..4cfb458ed 100644 --- a/sysklogd/syslogd.c +++ b/sysklogd/syslogd.c @@ -5,6 +5,8 @@ * Copyright (C) 1999,2000 by Lineo, inc. * Written by Erik Andersen , * + * Copyright (C) 2000 by Karl M. Hegbloom + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -74,39 +76,38 @@ static const char syslogd_usage[] = /* Note: There is also a function called "message()" in init.c */ /* Print a message to the log file. */ -static void message(char *fmt, ...) - __attribute__ ((format (printf, 1, 2))); -static void message(char *fmt, ...) +static void message (char *fmt, ...) __attribute__ ((format (printf, 1, 2))); +static void message (char *fmt, ...) { int fd; va_list arguments; - if ( (fd = device_open(logFilePath, - O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND | - O_NONBLOCK)) >= 0) { - va_start(arguments, fmt); - vdprintf(fd, fmt, arguments); - va_end(arguments); - close(fd); + if ((fd = device_open (logFilePath, + O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND | + O_NONBLOCK)) >= 0) { + va_start (arguments, fmt); + vdprintf (fd, fmt, arguments); + va_end (arguments); + close (fd); } else { /* Always send console messages to /dev/console so people will see them. */ - if ( (fd = device_open(_PATH_CONSOLE, - O_WRONLY | O_NOCTTY | O_NONBLOCK)) >= 0) { - va_start(arguments, fmt); - vdprintf(fd, fmt, arguments); - va_end(arguments); - close(fd); + if ((fd = device_open (_PATH_CONSOLE, + O_WRONLY | O_NOCTTY | O_NONBLOCK)) >= 0) { + va_start (arguments, fmt); + vdprintf (fd, fmt, arguments); + va_end (arguments); + close (fd); } else { - fprintf(stderr, "Bummer, can't print: "); - va_start(arguments, fmt); - vfprintf(stderr, fmt, arguments); - fflush(stderr); - va_end(arguments); + fprintf (stderr, "Bummer, can't print: "); + va_start (arguments, fmt); + vfprintf (stderr, fmt, arguments); + fflush (stderr); + va_end (arguments); } } } -static void logMessage(int pri, char *msg) +static void logMessage (int pri, char *msg) { time_t now; char *timestamp; @@ -161,11 +162,13 @@ static void doSyslogd (void) { struct sockaddr_un sunx; size_t addrLength; + int sock_fd; - fd_set readfds; + fd_set fds; + char lfile[PATH_MAX]; - /* Set up sig handlers */ + /* Set up signal handlers. */ signal (SIGINT, quit_signal); signal (SIGTERM, quit_signal); signal (SIGQUIT, quit_signal); @@ -173,86 +176,81 @@ static void doSyslogd (void) signal (SIGALRM, domark); alarm (MarkInterval); - /* create the syslog file so realpath() can work */ - close(open(_PATH_LOG, O_RDWR | O_CREAT, 0644)); - if (realpath(_PATH_LOG, lfile) == NULL) { - fatalError("Could not resolv path to " _PATH_LOG); - } + /* Create the syslog file so realpath() can work. */ + close (open (_PATH_LOG, O_RDWR | O_CREAT, 0644)); + if (realpath (_PATH_LOG, lfile) == NULL) + fatalError ("Could not resolv path to " _PATH_LOG ": %s", strerror (errno)); unlink (lfile); - memset (&sunx, 0, sizeof(sunx)); - + memset (&sunx, 0, sizeof (sunx)); sunx.sun_family = AF_UNIX; - strncpy (sunx.sun_path, lfile, sizeof(sunx.sun_path)); - if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { - fatalError ("Couldn't obtain descriptor for socket " _PATH_LOG); - } + strncpy (sunx.sun_path, lfile, sizeof (sunx.sun_path)); + if ((sock_fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) + fatalError ("Couldn't obtain descriptor for socket " _PATH_LOG ": %s", strerror (errno)); addrLength = sizeof (sunx.sun_family) + strlen (sunx.sun_path); - if ((bind (sock_fd, (struct sockaddr *) &sunx, addrLength)) || - (listen (sock_fd, 5))) { - fatalError ("Could not connect to socket " _PATH_LOG); - } + if ((bind (sock_fd, (struct sockaddr *) &sunx, addrLength)) || (listen (sock_fd, 5))) + fatalError ("Could not connect to socket " _PATH_LOG ": %s", strerror (errno)); - if (chmod (lfile, 0666) < 0) { - fatalError ("Could not set permission on " _PATH_LOG); - } + if (chmod (lfile, 0666) < 0) + fatalError ("Could not set permission on " _PATH_LOG ": %s", strerror (errno)); - FD_ZERO (&readfds); - FD_SET (sock_fd, &readfds); + FD_ZERO (&fds); + FD_SET (sock_fd, &fds); logMessage (0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")"); for (;;) { - int n_ready; - int fd; + + fd_set readfds; + int n_ready; + int fd; + + memcpy (&readfds, &fds, sizeof (fds)); if ((n_ready = select (FD_SETSIZE, &readfds, NULL, NULL, NULL)) < 0) { if (errno == EINTR) continue; /* alarm may have happened. */ - fatalError( "select error: %s\n", strerror(errno)); + fatalError ("select error: %s\n", strerror (errno)); } - /* Skip stdin, stdout, stderr */ - for (fd = 3; fd < FD_SETSIZE; fd++) { + for (fd = 0; (n_ready > 0) && (fd < FD_SETSIZE); fd++) { if (FD_ISSET (fd, &readfds)) { + --n_ready; if (fd == sock_fd) { int conn; - if ((conn = accept(sock_fd, (struct sockaddr *) &sunx, - &addrLength)) < 0) { - fatalError( "accept error: %s\n", strerror(errno)); + if ((conn = accept (sock_fd, (struct sockaddr *) &sunx, &addrLength)) < 0) { + fatalError ("accept error: %s\n", strerror (errno)); } - FD_SET (conn, &readfds); + FD_SET (conn, &fds); + continue; } else { -#define BUFSIZE 1024 + 1 - char buf; - char *q, *p; +# define BUFSIZE 1023 + char buf[ BUFSIZE + 1 ]; int n_read; - char line[BUFSIZE]; - unsigned char c; - int pri; - - /* Get set to read in a line */ - memset (line, 0, sizeof(line)); - pri = (LOG_USER | LOG_NOTICE); - - /* Keep reading stuff till there is nothing else to read */ - while( (n_read = read (fd, &buf, 1)) > 0) { - p = &buf; - q = line; - while (p && (c = *p) && q < &line[sizeof(line) - 1]) { + + while ((n_read = read (fd, buf, BUFSIZE )) > 0) { + + int pri = (LOG_USER | LOG_NOTICE); + char line[ BUFSIZE + 1 ]; + unsigned char c; + char *p = buf, *q = line; + + buf[ n_read - 1 ] = '\0'; + + while (p && (c = *p) && q < &line[ sizeof (line) - 1 ]) { if (c == '<') { - /* Parse the magic priority number */ + /* Parse the magic priority number. */ pri = 0; - while (isdigit(*(++p))) { + while (isdigit (*(++p))) { pri = 10 * pri + (*p - '0'); } if (pri & ~(LOG_FACMASK | LOG_PRIMASK)) pri = (LOG_USER | LOG_NOTICE); } else if (c == '\n') { *q++ = ' '; - } else if (iscntrl(c) && (c < 0177)) { + } else if (iscntrl (c) && (c < 0177)) { *q++ = '^'; *q++ = c ^ 0100; } else { @@ -261,13 +259,11 @@ static void doSyslogd (void) p++; } *q = '\0'; - /* Now log it */ - logMessage(pri, line); - break; + logMessage (pri, line); } close (fd); - FD_CLR (fd, &readfds); + FD_CLR (fd, &fds); } } } @@ -351,7 +347,6 @@ static void doKlogd (void) #endif -static void daemon_init (char **argv, char *dz, void fn (void)) __attribute__ ((noreturn)); static void daemon_init (char **argv, char *dz, void fn (void)) { setsid(); -- cgit v1.2.3