Welcome to mirror list, hosted at ThFree Co, Russian Federation.

cygwin.com/git/newlib-cygwin.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/winsup/cygwin/syslog.cc
diff options
context:
space:
mode:
Diffstat (limited to 'winsup/cygwin/syslog.cc')
-rw-r--r--winsup/cygwin/syslog.cc458
1 files changed, 0 insertions, 458 deletions
diff --git a/winsup/cygwin/syslog.cc b/winsup/cygwin/syslog.cc
deleted file mode 100644
index b27f0e716..000000000
--- a/winsup/cygwin/syslog.cc
+++ /dev/null
@@ -1,458 +0,0 @@
-/* syslog.cc
-
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2006, 2007, 2009 Red Hat, Inc.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license. Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#define __INSIDE_CYGWIN_NET__
-
-#include "winsup.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <syslog.h>
-#include <unistd.h>
-#include <sys/un.h>
-#include "cygerrno.h"
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "cygheap.h"
-#include "cygtls.h"
-
-#define CYGWIN_LOG_NAME "Cygwin"
-
-/* openlog: save the passed args. Don't open the system log or /dev/log yet. */
-extern "C" void
-openlog (const char *ident, int logopt, int facility)
-{
- debug_printf ("openlog called with (%s, %d, %d)",
- ident ? ident : "<NULL>", logopt, facility);
-
- if (_my_tls.locals.process_ident != NULL)
- {
- free (_my_tls.locals.process_ident);
- _my_tls.locals.process_ident = NULL;
- }
- if (ident)
- {
- _my_tls.locals.process_ident = (char *) malloc (strlen (ident) + 1);
- if (!_my_tls.locals.process_ident)
- {
- debug_printf ("failed to allocate memory for _my_tls.locals.process_ident");
- return;
- }
- strcpy (_my_tls.locals.process_ident, ident);
- }
- _my_tls.locals.process_logopt = logopt;
- _my_tls.locals.process_facility = facility;
-}
-
-/* setlogmask: set the log priority mask and return previous mask.
- If maskpri is zero, just return previous. */
-int
-setlogmask (int maskpri)
-{
- if (maskpri == 0)
- return _my_tls.locals.process_logmask;
-
- int old_mask = _my_tls.locals.process_logmask;
- _my_tls.locals.process_logmask = maskpri;
-
- return old_mask;
-}
-
-/* Private class used to handle formatting of syslog message
- It is named pass_handler because it does a two-pass handling of log
- strings. The first pass counts the length of the string, and the second
- one builds the string. */
-
-class pass_handler
-{
- private:
- FILE *fp_;
- char *message_;
- int total_len_;
-
- void shutdown ();
-
- /* Explicitly disallow copies */
- pass_handler (const pass_handler &);
- pass_handler & operator = (const pass_handler &);
-
- public:
- pass_handler ();
- ~pass_handler ();
-
- int initialize (int);
-
- int print (const char *,...);
- int print_va (const char *, va_list);
- char *get_message () const { return message_; }
- void set_message (char *s) { message_ = s; *message_ = '\0'; }
-};
-
-pass_handler::pass_handler () : fp_ (0), message_ (0), total_len_ (0)
-{
- ;
-}
-
-pass_handler::~pass_handler ()
-{
- shutdown ();
-}
-
-void
-pass_handler::shutdown ()
-{
- if (fp_ != NULL)
- {
- fclose (fp_);
- fp_ = 0;
- }
-}
-
-int
-pass_handler::initialize (int pass_number)
-{
- shutdown ();
- if (pass_number)
- return total_len_ + 1;
-
- fp_ = fopen ("/dev/null", "wb");
- setbuf (fp_, NULL);
- if (fp_ == NULL)
- {
- debug_printf ("failed to open /dev/null");
- return -1;
- }
- total_len_ = 0;
- return 0;
-}
-
-int
-pass_handler::print (const char *fmt, ...)
-{
- va_list ap;
- va_start (ap, fmt);
- int ret = print_va (fmt, ap);
- va_end (ap);
- return ret;
-}
-
-int
-pass_handler::print_va (const char *fmt, va_list list)
-{
- if (fp_ != NULL)
- {
- int len = vfprintf (fp_, fmt, list);
- if (len < 0)
- return -1;
- total_len_ += len;
- return 0;
- }
- else if (message_ != NULL)
- {
- char *printpos = &message_[strlen (message_)];
- vsprintf (printpos, fmt, list);
- return 0;
- }
- debug_printf ("FAILURE ! fp_ and message_ both 0!! ");
- return -1;
-}
-
-static NO_COPY muto try_connect_guard;
-static enum {
- not_inited,
- inited_failed,
- inited_dgram,
- inited_stream
-} syslogd_inited;
-static int syslogd_sock = -1;
-extern "C" int cygwin_socket (int, int, int);
-extern "C" int cygwin_connect (int, const struct sockaddr *, int);
-
-static void
-connect_syslogd ()
-{
- struct __stat64 st;
- int fd;
- struct sockaddr_un sun;
-
- if (syslogd_inited != not_inited && syslogd_sock >= 0)
- close (syslogd_sock);
- syslogd_inited = inited_failed;
- syslogd_sock = -1;
- if (stat64 (_PATH_LOG, &st) || !S_ISSOCK (st.st_mode))
- return;
- if ((fd = cygwin_socket (AF_LOCAL, SOCK_DGRAM, 0)) < 0)
- return;
- sun.sun_family = AF_LOCAL;
- strncpy (sun.sun_path, _PATH_LOG, sizeof sun.sun_path);
- if (cygwin_connect (fd, (struct sockaddr *) &sun, sizeof sun))
- {
- if (get_errno () != EPROTOTYPE)
- {
- close (fd);
- return;
- }
- /* Retry with SOCK_STREAM. */
- if ((fd = cygwin_socket (AF_LOCAL, SOCK_STREAM, 0)) < 0)
- return;
- if (cygwin_connect (fd, (struct sockaddr *) &sun, sizeof sun))
- {
- close (fd);
- return;
- }
- syslogd_inited = inited_stream;
- }
- else
- syslogd_inited = inited_dgram;
- syslogd_sock = fd;
- fcntl64 (syslogd_sock, F_SETFD, FD_CLOEXEC);
- return;
-}
-
-static int
-try_connect_syslogd (int priority, const char *msg, int len)
-{
- ssize_t ret = -1;
-
- try_connect_guard.init ("try_connect_guard")->acquire ();
- if (syslogd_inited == not_inited)
- connect_syslogd ();
- if (syslogd_sock >= 0)
- {
- char pribuf[16];
- sprintf (pribuf, "<%d>", priority);
- struct iovec iv[2] =
- {
- { pribuf, strlen (pribuf) },
- { (char *) msg, len }
- };
-
- ret = writev (syslogd_sock, iv, 2);
- /* If the syslog daemon has been restarted and /dev/log was
- a stream socket, the connection is broken. In this case,
- try to reopen the socket and try again. */
- if (ret < 0 && syslogd_inited == inited_stream)
- {
- connect_syslogd ();
- if (syslogd_sock >= 0)
- ret = writev (syslogd_sock, iv, 2);
- }
- /* If write fails and LOG_CONS is set, return failure to vsyslog so
- it falls back to the usual logging method for this OS. */
- if (ret >= 0 || !(_my_tls.locals.process_logopt & LOG_CONS))
- ret = syslogd_sock;
- }
- try_connect_guard.release ();
- return ret;
-}
-
-/* syslog: creates the log message and writes to /dev/log, or to the
- NT system log if /dev/log isn't available.
-
- FIXME. WinNT system log messages don't look pretty, but in order to
- fix this we have to embed resources in the code and tell the NT
- registry where we are, blech (what happens if we move ?). We could,
- however, add the resources in Cygwin and always point to that. */
-
-extern "C" void
-vsyslog (int priority, const char *message, va_list ap)
-{
- debug_printf ("%x %s", priority, message);
- /* If the priority fails the current mask, reject */
- if ((LOG_MASK (LOG_PRI (priority)) & _my_tls.locals.process_logmask) == 0)
- {
- debug_printf ("failing message %x due to priority mask %x",
- priority, _my_tls.locals.process_logmask);
- return;
- }
-
- /* Set default facility to LOG_USER if not yet set via openlog. */
- if (!_my_tls.locals.process_facility)
- _my_tls.locals.process_facility = LOG_USER;
-
- /* Add default facility if not in the given priority. */
- if (!(priority & LOG_FACMASK))
- priority |= _my_tls.locals.process_facility;
-
- /* Translate %m in the message to error text */
- char *errtext = strerror (get_errno ());
- int errlen = strlen (errtext);
- int numfound = 0;
-
- for (const char *cp = message; *cp; cp++)
- if (*cp == '%' && cp[1] == 'm')
- numfound++;
-
- char *newmessage = (char *) alloca (strlen (message) +
- (errlen * numfound) + 1);
-
- if (newmessage == NULL)
- {
- debug_printf ("failed to allocate newmessage");
- return;
- }
-
- char *dst = newmessage;
- for (const char *cp2 = message; *cp2; cp2++)
- if (*cp2 == '%' && cp2[1] == 'm')
- {
- cp2++;
- strcpy (dst, errtext);
- while (*dst)
- dst++;
- }
- else
- *dst++ = *cp2;
-
- *dst = '\0';
- message = newmessage;
-
- /* Work out the priority type - we ignore the facility for now.. */
- WORD eventType;
- switch (LOG_PRI (priority))
- {
- case LOG_EMERG:
- case LOG_ALERT:
- case LOG_CRIT:
- case LOG_ERR:
- eventType = EVENTLOG_ERROR_TYPE;
- break;
- case LOG_WARNING:
- eventType = EVENTLOG_WARNING_TYPE;
- break;
- case LOG_NOTICE:
- case LOG_INFO:
- case LOG_DEBUG:
- eventType = EVENTLOG_INFORMATION_TYPE;
- break;
- default:
- eventType = EVENTLOG_ERROR_TYPE;
- break;
- }
-
- /* We need to know how long the buffer needs to be.
- The only legal way I can see of doing this is to
- do a vfprintf to /dev/null, and count the bytes
- output, then do it again to a malloc'ed string. This
- is ugly, slow, but prevents core dumps :-).
- */
- pass_handler pass;
- for (int pass_number = 0; pass_number < 2; ++pass_number)
- {
- int n = pass.initialize (pass_number);
- if (n == -1)
- return;
- else if (n > 0)
- pass.set_message ((char *) alloca (n));
-
- /* Deal with ident_string */
- if (_my_tls.locals.process_ident != NULL)
- {
- if (pass.print ("%s: ", _my_tls.locals.process_ident) == -1)
- return;
- }
- if (_my_tls.locals.process_logopt & LOG_PID)
- {
- if (pass.print ("PID %u: ", getpid ()) == -1)
- return;
- }
-
- /* Print out the variable part */
- if (pass.print_va (message, ap) == -1)
- return;
-
- }
- const char *msg_strings[1];
- char *total_msg = pass.get_message ();
- int len = strlen (total_msg);
- if (len != 0 && (total_msg[len - 1] == '\n'))
- total_msg[--len] = '\0';
-
- msg_strings[0] = total_msg;
-
- if (_my_tls.locals.process_logopt & LOG_PERROR)
- {
- write (STDERR_FILENO, total_msg, len);
- write (STDERR_FILENO, "\n", 1);
- }
-
- int fd;
- if ((fd = try_connect_syslogd (priority, total_msg, len + 1)) < 0)
- {
- /* If syslogd isn't present, open the event log and send the message */
- HANDLE hEventSrc = RegisterEventSourceA (NULL, (_my_tls.locals.process_ident != NULL) ?
- _my_tls.locals.process_ident : CYGWIN_LOG_NAME);
- if (hEventSrc == NULL)
- {
- debug_printf ("RegisterEventSourceA failed with %E");
- return;
- }
- if (!ReportEventA (hEventSrc, eventType, 0, 0,
- cygheap->user.sid (), 1, 0, msg_strings, NULL))
- debug_printf ("ReportEventA failed with %E");
- DeregisterEventSource (hEventSrc);
- }
-}
-
-extern "C" void
-syslog (int priority, const char *message, ...)
-{
- va_list ap;
- va_start (ap, message);
- vsyslog (priority, message, ap);
- va_end (ap);
-}
-
-static NO_COPY muto klog_guard;
-fhandler_mailslot *dev_kmsg;
-
-extern "C" void
-vklog (int priority, const char *message, va_list ap)
-{
- /* TODO: kernel messages are under our control entirely and they should
- be quick. No playing with /dev/null, but a fixed upper size for now. */
- char buf[2060]; /* 2048 + a prority */
- if (!(priority & ~LOG_PRIMASK))
- priority = LOG_KERN | LOG_PRI (priority);
- __small_sprintf (buf, "<%d>", priority);
- __small_vsprintf (buf + strlen (buf), message, ap);
- klog_guard.init ("klog_guard")->acquire ();
- if (!dev_kmsg)
- dev_kmsg = (fhandler_mailslot *) build_fh_name ("/dev/kmsg");
- if (dev_kmsg && !dev_kmsg->get_handle ())
- dev_kmsg->open (O_WRONLY, 0);
- if (dev_kmsg && dev_kmsg->get_handle ())
- dev_kmsg->write (buf, strlen (buf) + 1);
- klog_guard.release ();
-}
-
-extern "C" void
-klog (int priority, const char *message, ...)
-{
- va_list ap;
- va_start (ap, message);
- vklog (priority, message, ap);
- va_end (ap);
-}
-
-extern "C" void
-closelog (void)
-{
- try_connect_guard.init ("try_connect_guard")->acquire ();
- if (syslogd_inited != not_inited && syslogd_sock >= 0)
- {
- close (syslogd_sock);
- syslogd_sock = -1;
- syslogd_inited = not_inited;
- }
- try_connect_guard.release ();
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 05:09:52 +0300