[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/misc/syslog/syslog.c b/ap/build/uClibc/libc/misc/syslog/syslog.c
new file mode 100644
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+++ b/ap/build/uClibc/libc/misc/syslog/syslog.c
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+/*
+ * Copyright (c) 1983, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * SYSLOG -- print message on log file
+ *
+ * This routine looks a lot like printf, except that it outputs to the
+ * log file instead of the standard output. Also:
+ * adds a timestamp,
+ * prints the module name in front of the message,
+ * has some other formatting types (or will sometime),
+ * adds a newline on the end of the message.
+ *
+ * The output of this routine is intended to be read by syslogd(8).
+ *
+ * Author: Eric Allman
+ * Modified to use UNIX domain IPC by Ralph Campbell
+ * Patched March 12, 1996 by A. Ian Vogelesang <vogelesang@hdshq.com>
+ * - to correct the handling of message & format string truncation,
+ * - to visibly tag truncated records to facilitate
+ * investigation of such Bad Things with grep, and,
+ * - to correct the handling of case where "write"
+ * returns after writing only part of the message.
+ * Rewritten by Martin Mares <mj@atrey.karlin.mff.cuni.cz> on May 14, 1997
+ * - better buffer overrun checks.
+ * - special handling of "%m" removed as we use GNU sprintf which handles
+ * it automatically.
+ * - Major code cleanup.
+ */
+
+#define __FORCE_GLIBC
+#include <features.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/signal.h>
+#include <sys/syslog.h>
+
+#include <sys/uio.h>
+#include <sys/wait.h>
+#include <netdb.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <paths.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+
+
+#include <bits/uClibc_mutex.h>
+
+__UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER);
+
+
+/* !glibc_compat: glibc uses argv[0] by default
+ * (default: if there was no openlog or if openlog passed NULL),
+ * not string "syslog"
+ */
+static const char *LogTag = "syslog"; /* string to tag the entry with */
+static int LogFile = -1; /* fd for log */
+static smalluint connected; /* have done connect */
+/* all bits in option argument for openlog fit in 8 bits */
+static smalluint LogStat = 0; /* status bits, set by openlog */
+/* default facility code if openlog is not called */
+/* (this fits in 8 bits even without >> 3 shift, but playing extra safe) */
+static smalluint LogFacility = LOG_USER >> 3;
+/* bits mask of priorities to be logged (eight prios - 8 bits is enough) */
+static smalluint LogMask = 0xff;
+/* AF_UNIX address of local logger (we use struct sockaddr
+ * instead of struct sockaddr_un since "/dev/log" is small enough) */
+static const struct sockaddr SyslogAddr = {
+ .sa_family = AF_UNIX, /* sa_family_t (usually a short) */
+ .sa_data = _PATH_LOG /* char [14] */
+};
+
+static void
+closelog_intern(int sig)
+{
+ /* mylock must be held by the caller */
+ if (LogFile != -1) {
+ (void) close(LogFile);
+ }
+ LogFile = -1;
+ connected = 0;
+ if (sig == 0) { /* called from closelog()? - reset to defaults */
+ LogStat = 0;
+ LogTag = "syslog";
+ LogFacility = LOG_USER >> 3;
+ LogMask = 0xff;
+ }
+}
+
+static void
+openlog_intern(const char *ident, int logstat, int logfac)
+{
+ int fd;
+ int logType = SOCK_DGRAM;
+
+ if (ident != NULL)
+ LogTag = ident;
+ LogStat = logstat;
+ /* (we were checking also for logfac != 0, but it breaks
+ * openlog(xx, LOG_KERN) since LOG_KERN == 0) */
+ if ((logfac & ~LOG_FACMASK) == 0) /* if we don't have invalid bits */
+ LogFacility = (unsigned)logfac >> 3;
+
+ fd = LogFile;
+ if (fd == -1) {
+ retry:
+ if (logstat & LOG_NDELAY) {
+ LogFile = fd = socket(AF_UNIX, logType, 0);
+ if (fd == -1) {
+ return;
+ }
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+ /* We don't want to block if e.g. syslogd is SIGSTOPed */
+ fcntl(fd, F_SETFL, O_NONBLOCK | fcntl(fd, F_GETFL));
+ }
+ }
+
+ if (fd != -1 && !connected) {
+ if (connect(fd, &SyslogAddr, sizeof(SyslogAddr)) != -1) {
+ connected = 1;
+ } else {
+ if (fd != -1) {
+ close(fd);
+ LogFile = fd = -1;
+ }
+ if (logType == SOCK_DGRAM) {
+ logType = SOCK_STREAM;
+ goto retry;
+ }
+ }
+ }
+}
+
+/*
+ * OPENLOG -- open system log
+ */
+void
+openlog(const char *ident, int logstat, int logfac)
+{
+ __UCLIBC_MUTEX_LOCK(mylock);
+ openlog_intern(ident, logstat, logfac);
+ __UCLIBC_MUTEX_UNLOCK(mylock);
+}
+libc_hidden_def(openlog)
+
+/*
+ * syslog, vsyslog --
+ * print message on log file; output is intended for syslogd(8).
+ */
+void
+vsyslog(int pri, const char *fmt, va_list ap)
+{
+ register char *p;
+ char *last_chr, *head_end, *end, *stdp;
+ time_t now;
+ int fd, saved_errno;
+ int rc;
+ char tbuf[1024]; /* syslogd is unable to handle longer messages */
+
+ /* Just throw out this message if pri has bad bits. */
+ if ((pri & ~(LOG_PRIMASK|LOG_FACMASK)) != 0)
+ return;
+
+ saved_errno = errno;
+
+ __UCLIBC_MUTEX_LOCK(mylock);
+
+ /* See if we should just throw out this message according to LogMask. */
+ if ((LogMask & LOG_MASK(LOG_PRI(pri))) == 0)
+ goto getout;
+ if (LogFile < 0 || !connected)
+ openlog_intern(NULL, LogStat | LOG_NDELAY, (int)LogFacility << 3);
+
+ /* Set default facility if none specified. */
+ if ((pri & LOG_FACMASK) == 0)
+ pri |= ((int)LogFacility << 3);
+
+ /* Build the message. We know the starting part of the message can take
+ * no longer than 64 characters plus length of the LogTag. So it's
+ * safe to test only LogTag and use normal sprintf everywhere else.
+ */
+ (void)time(&now);
+ stdp = p = tbuf + sprintf(tbuf, "<%d>%.15s ", pri, ctime(&now) + 4);
+ /*if (LogTag) - always true */ {
+ if (strlen(LogTag) < sizeof(tbuf) - 64)
+ p += sprintf(p, "%s", LogTag);
+ else
+ p += sprintf(p, "<BUFFER OVERRUN ATTEMPT>");
+ }
+ if (LogStat & LOG_PID)
+ p += sprintf(p, "[%d]", getpid());
+ /*if (LogTag) - always true */ {
+ *p++ = ':';
+ *p++ = ' ';
+ }
+ head_end = p;
+
+ /* We format the rest of the message. If the buffer becomes full, we mark
+ * the message as truncated. Note that we require at least 2 free bytes
+ * in the buffer as we might want to add "\r\n" there.
+ */
+
+ end = tbuf + sizeof(tbuf) - 1;
+ __set_errno(saved_errno);
+ p += vsnprintf(p, end - p, fmt, ap);
+ if (p >= end || p < head_end) { /* Returned -1 in case of error... */
+ static const char truncate_msg[12] = "[truncated] "; /* no NUL! */
+ memmove(head_end + sizeof(truncate_msg), head_end,
+ end - head_end - sizeof(truncate_msg));
+ memcpy(head_end, truncate_msg, sizeof(truncate_msg));
+ if (p < head_end) {
+ while (p < end && *p) {
+ p++;
+ }
+ }
+ else {
+ p = end - 1;
+ }
+
+ }
+ last_chr = p;
+
+ /* Output to stderr if requested. */
+ if (LogStat & LOG_PERROR) {
+ *last_chr = '\n';
+ (void)write(STDERR_FILENO, stdp, last_chr - stdp + 1);
+ }
+
+ /* Output the message to the local logger using NUL as a message delimiter. */
+ p = tbuf;
+ *last_chr = '\0';
+ if (LogFile >= 0) {
+ do {
+ /* can't just use write, it can result in SIGPIPE */
+ rc = send(LogFile, p, last_chr + 1 - p, MSG_NOSIGNAL);
+ if (rc < 0) {
+ /* I don't think looping forever on EAGAIN is a good idea.
+ * Imagine that syslogd is SIGSTOPed... */
+ if (/* (errno != EAGAIN) && */ (errno != EINTR)) {
+ closelog_intern(1); /* 1: do not reset LogXXX globals to default */
+ goto write_err;
+ }
+ rc = 0;
+ }
+ p += rc;
+ } while (p <= last_chr);
+ goto getout;
+ }
+
+ write_err:
+ /*
+ * Output the message to the console; don't worry about blocking,
+ * if console blocks everything will. Make sure the error reported
+ * is the one from the syslogd failure.
+ */
+ /* should mode be O_WRONLY | O_NOCTTY? -- Uli */
+ /* yes, but in Linux "/dev/console" never becomes ctty anyway -- vda */
+ if ((LogStat & LOG_CONS) &&
+ (fd = open(_PATH_CONSOLE, O_WRONLY | O_NOCTTY)) >= 0) {
+ p = strchr(tbuf, '>') + 1;
+ last_chr[0] = '\r';
+ last_chr[1] = '\n';
+ (void)write(fd, p, last_chr - p + 2);
+ (void)close(fd);
+ }
+
+ getout:
+ __UCLIBC_MUTEX_UNLOCK(mylock);
+}
+libc_hidden_def(vsyslog)
+
+void
+syslog(int pri, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsyslog(pri, fmt, ap);
+ va_end(ap);
+}
+libc_hidden_def(syslog)
+
+/*
+ * CLOSELOG -- close the system log
+ */
+void
+closelog(void)
+{
+ __UCLIBC_MUTEX_LOCK(mylock);
+ closelog_intern(0); /* 0: reset LogXXX globals to default */
+ __UCLIBC_MUTEX_UNLOCK(mylock);
+}
+libc_hidden_def(closelog)
+
+/* setlogmask -- set the log mask level */
+int setlogmask(int pmask)
+{
+ int omask;
+
+ omask = LogMask;
+ if (pmask != 0) {
+ __UCLIBC_MUTEX_LOCK(mylock);
+ LogMask = pmask;
+ __UCLIBC_MUTEX_UNLOCK(mylock);
+ }
+ return omask;
+}