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misc: syslog: Fix indentation and style
And also clenaup the headers, no semantic changes.
This commit is contained in:
Adhemerval Zanella
parent
096c27684a
commit
0cc15f45c9
465
misc/syslog.c
465
misc/syslog.c
@ -31,49 +31,32 @@
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static char sccsid[] = "@(#)syslog.c 8.4 (Berkeley) 3/18/94";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/uio.h>
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#include <sys/un.h>
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#include <netdb.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <libio/libioP.h>
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#include <paths.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <libc-lock.h>
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#include <signal.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <libio/libioP.h>
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#include <math_ldbl_opt.h>
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#include <kernel-features.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/un.h>
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#include <syslog.h>
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#define ftell(s) _IO_ftell (s)
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static int LogType = SOCK_DGRAM; /* type of socket connection */
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static int LogFile = -1; /* fd for log */
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static bool connected; /* have done connect */
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static int LogStat; /* status bits, set by openlog() */
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static int LogType = SOCK_DGRAM; /* type of socket connection */
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static int LogFile = -1; /* fd for log */
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static bool connected; /* have done connect */
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static int LogStat; /* status bits, set by openlog() */
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static const char *LogTag; /* string to tag the entry with */
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static int LogFacility = LOG_USER; /* default facility code */
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static int LogMask = 0xff; /* mask of priorities to be logged */
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extern char *__progname; /* Program name, from crt0. */
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static int LogFacility = LOG_USER; /* default facility code */
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static int LogMask = 0xff; /* mask of priorities to be logged */
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extern char *__progname; /* Program name, from crt0. */
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/* Define the lock. */
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__libc_lock_define_initialized (static, syslog_lock)
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static void openlog_internal(const char *, int, int);
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static void closelog_internal(void);
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static void openlog_internal (const char *, int, int);
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static void closelog_internal (void);
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struct cleanup_arg
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{
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@ -101,205 +84,203 @@ cancel_handler (void *ptr)
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* print message on log file; output is intended for syslogd(8).
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*/
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void
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__syslog(int pri, const char *fmt, ...)
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__syslog (int pri, const char *fmt, ...)
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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__vsyslog_internal(pri, fmt, ap, 0);
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va_end(ap);
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va_start (ap, fmt);
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__vsyslog_internal (pri, fmt, ap, 0);
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va_end (ap);
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}
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ldbl_hidden_def (__syslog, syslog)
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ldbl_strong_alias (__syslog, syslog)
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void
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__vsyslog(int pri, const char *fmt, va_list ap)
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__vsyslog (int pri, const char *fmt, va_list ap)
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{
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__vsyslog_internal(pri, fmt, ap, 0);
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__vsyslog_internal (pri, fmt, ap, 0);
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}
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ldbl_weak_alias (__vsyslog, vsyslog)
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void
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__syslog_chk(int pri, int flag, const char *fmt, ...)
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__syslog_chk (int pri, int flag, const char *fmt, ...)
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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__vsyslog_internal(pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
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va_end(ap);
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va_start (ap, fmt);
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__vsyslog_internal (pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
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va_end (ap);
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}
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void
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__vsyslog_chk(int pri, int flag, const char *fmt, va_list ap)
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__vsyslog_chk (int pri, int flag, const char *fmt, va_list ap)
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{
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__vsyslog_internal(pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
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__vsyslog_internal (pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
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}
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void
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__vsyslog_internal(int pri, const char *fmt, va_list ap,
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unsigned int mode_flags)
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__vsyslog_internal (int pri, const char *fmt, va_list ap,
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unsigned int mode_flags)
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{
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struct tm now_tm;
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time_t now;
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int fd;
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FILE *f;
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char *buf = 0;
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size_t bufsize = 0;
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size_t msgoff;
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int saved_errno = errno;
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char failbuf[3 * sizeof (pid_t) + sizeof "out of memory []"];
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struct tm now_tm;
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time_t now;
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int fd;
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FILE *f;
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char *buf = 0;
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size_t bufsize = 0;
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size_t msgoff;
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int saved_errno = errno;
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char failbuf[3 * sizeof (pid_t) + sizeof "out of memory []"];
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#define INTERNALLOG LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
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/* Check for invalid bits. */
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if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
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syslog(INTERNALLOG,
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"syslog: unknown facility/priority: %x", pri);
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pri &= LOG_PRIMASK|LOG_FACMASK;
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#define INTERNALLOG LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
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/* Check for invalid bits. */
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if (pri & ~(LOG_PRIMASK | LOG_FACMASK))
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{
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syslog (INTERNALLOG, "syslog: unknown facility/priority: %x", pri);
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pri &= LOG_PRIMASK | LOG_FACMASK;
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}
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/* Prepare for multiple users. We have to take care: most syscalls we are
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using are cancellation points. */
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struct cleanup_arg clarg;
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clarg.buf = NULL;
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clarg.oldaction = NULL;
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__libc_cleanup_push (cancel_handler, &clarg);
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__libc_lock_lock (syslog_lock);
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/* Check priority against setlogmask values. */
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if ((LOG_MASK (LOG_PRI (pri)) & LogMask) == 0)
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goto out;
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/* Set default facility if none specified. */
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if ((pri & LOG_FACMASK) == 0)
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pri |= LogFacility;
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/* Build the message in a memory-buffer stream. */
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f = __open_memstream (&buf, &bufsize);
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if (f == NULL)
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{
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/* We cannot get a stream. There is not much we can do but emitting an
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error messages. */
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char numbuf[3 * sizeof (pid_t)];
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char *nump;
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char *endp = __stpcpy (failbuf, "out of memory [");
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pid_t pid = __getpid ();
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nump = numbuf + sizeof (numbuf);
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/* The PID can never be zero. */
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do
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*--nump = '0' + pid % 10;
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while ((pid /= 10) != 0);
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endp = __mempcpy (endp, nump, (numbuf + sizeof (numbuf)) - nump);
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*endp++ = ']';
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*endp = '\0';
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buf = failbuf;
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bufsize = endp - failbuf;
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msgoff = 0;
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}
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else
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{
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__fsetlocking (f, FSETLOCKING_BYCALLER);
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fprintf (f, "<%d>", pri);
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now = time_now ();
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f->_IO_write_ptr += __strftime_l (f->_IO_write_ptr,
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f->_IO_write_end - f->_IO_write_ptr,
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"%h %e %T ",
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__localtime_r (&now, &now_tm),
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_nl_C_locobj_ptr);
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msgoff = ftell (f);
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if (LogTag == NULL)
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LogTag = __progname;
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if (LogTag != NULL)
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__fputs_unlocked (LogTag, f);
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if (LogStat & LOG_PID)
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fprintf (f, "[%d]", (int) __getpid ());
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if (LogTag != NULL)
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{
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__putc_unlocked (':', f);
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__putc_unlocked (' ', f);
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}
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/* Prepare for multiple users. We have to take care: most
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syscalls we are using are cancellation points. */
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struct cleanup_arg clarg;
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clarg.buf = NULL;
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clarg.oldaction = NULL;
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__libc_cleanup_push (cancel_handler, &clarg);
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__libc_lock_lock (syslog_lock);
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/* Restore errno for %m format. */
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__set_errno (saved_errno);
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/* Check priority against setlogmask values. */
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if ((LOG_MASK (LOG_PRI (pri)) & LogMask) == 0)
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goto out;
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/* We have the header. Print the user's format into the buffer. */
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__vfprintf_internal (f, fmt, ap, mode_flags);
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/* Set default facility if none specified. */
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if ((pri & LOG_FACMASK) == 0)
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pri |= LogFacility;
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/* Close the memory stream; this will finalize the data into a malloc'd
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buffer in BUF. */
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fclose (f);
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/* Build the message in a memory-buffer stream. */
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f = __open_memstream (&buf, &bufsize);
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if (f == NULL)
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{
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/* We cannot get a stream. There is not much we can do but
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emitting an error messages. */
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char numbuf[3 * sizeof (pid_t)];
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char *nump;
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char *endp = __stpcpy (failbuf, "out of memory [");
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pid_t pid = __getpid ();
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/* Tell the cancellation handler to free this buffer. */
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clarg.buf = buf;
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}
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nump = numbuf + sizeof (numbuf);
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/* The PID can never be zero. */
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do
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*--nump = '0' + pid % 10;
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while ((pid /= 10) != 0);
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/* Output to stderr if requested. */
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if (LogStat & LOG_PERROR)
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{
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struct iovec iov[2];
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struct iovec *v = iov;
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endp = __mempcpy (endp, nump, (numbuf + sizeof (numbuf)) - nump);
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*endp++ = ']';
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*endp = '\0';
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buf = failbuf;
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bufsize = endp - failbuf;
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msgoff = 0;
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}
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else
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{
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__fsetlocking (f, FSETLOCKING_BYCALLER);
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fprintf (f, "<%d>", pri);
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now = time_now ();
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f->_IO_write_ptr += __strftime_l (f->_IO_write_ptr,
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f->_IO_write_end
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- f->_IO_write_ptr,
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"%h %e %T ",
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__localtime_r (&now, &now_tm),
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_nl_C_locobj_ptr);
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msgoff = ftell (f);
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if (LogTag == NULL)
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LogTag = __progname;
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if (LogTag != NULL)
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__fputs_unlocked (LogTag, f);
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if (LogStat & LOG_PID)
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fprintf (f, "[%d]", (int) __getpid ());
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if (LogTag != NULL)
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{
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__putc_unlocked (':', f);
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__putc_unlocked (' ', f);
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}
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/* Restore errno for %m format. */
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__set_errno (saved_errno);
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/* We have the header. Print the user's format into the
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buffer. */
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__vfprintf_internal (f, fmt, ap, mode_flags);
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/* Close the memory stream; this will finalize the data
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into a malloc'd buffer in BUF. */
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fclose (f);
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/* Tell the cancellation handler to free this buffer. */
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clarg.buf = buf;
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}
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/* Output to stderr if requested. */
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if (LogStat & LOG_PERROR) {
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struct iovec iov[2];
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struct iovec *v = iov;
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v->iov_base = buf + msgoff;
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v->iov_len = bufsize - msgoff;
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/* Append a newline if necessary. */
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if (buf[bufsize - 1] != '\n')
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{
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++v;
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v->iov_base = (char *) "\n";
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v->iov_len = 1;
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}
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/* writev is a cancellation point. */
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(void)__writev(STDERR_FILENO, iov, v - iov + 1);
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v->iov_base = buf + msgoff;
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v->iov_len = bufsize - msgoff;
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/* Append a newline if necessary. */
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if (buf[bufsize - 1] != '\n')
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{
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++v;
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v->iov_base = (char *) "\n";
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v->iov_len = 1;
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}
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/* Get connected, output the message to the local logger. */
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if (!connected)
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openlog_internal(NULL, LogStat | LOG_NDELAY, LogFacility);
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/* writev is a cancellation point. */
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__writev (STDERR_FILENO, iov, v - iov + 1);
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}
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/* If we have a SOCK_STREAM connection, also send ASCII NUL as
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a record terminator. */
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if (LogType == SOCK_STREAM)
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++bufsize;
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/* Get connected, output the message to the local logger. */
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if (!connected)
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openlog_internal (NULL, LogStat | LOG_NDELAY, LogFacility);
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if (!connected || __send(LogFile, buf, bufsize, MSG_NOSIGNAL) < 0)
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{
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if (connected)
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{
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/* Try to reopen the syslog connection. Maybe it went
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down. */
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closelog_internal ();
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openlog_internal(NULL, LogStat | LOG_NDELAY, LogFacility);
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}
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/* If we have a SOCK_STREAM connection, also send ASCII NUL as a record
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terminator. */
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if (LogType == SOCK_STREAM)
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++bufsize;
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if (!connected || __send(LogFile, buf, bufsize, MSG_NOSIGNAL) < 0)
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{
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closelog_internal (); /* attempt re-open next time */
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/*
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* Output the message to the console; don't worry
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* about blocking, if console blocks everything will.
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* Make sure the error reported is the one from the
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* syslogd failure.
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*/
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if (LogStat & LOG_CONS &&
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(fd = __open(_PATH_CONSOLE, O_WRONLY|O_NOCTTY|O_CLOEXEC,
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0)) >= 0)
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{
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__dprintf (fd, "%s\r\n", buf + msgoff);
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(void)__close(fd);
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}
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}
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}
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if (!connected || __send (LogFile, buf, bufsize, MSG_NOSIGNAL) < 0)
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{
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if (connected)
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{
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/* Try to reopen the syslog connection. Maybe it went down. */
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closelog_internal ();
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openlog_internal (NULL, LogStat | LOG_NDELAY, LogFacility);
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}
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out:
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/* End of critical section. */
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__libc_cleanup_pop (0);
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__libc_lock_unlock (syslog_lock);
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if (!connected || __send (LogFile, buf, bufsize, MSG_NOSIGNAL) < 0)
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{
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closelog_internal (); /* attempt re-open next time */
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/*
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* Output the message to the console; don't worry
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* about blocking, if console blocks everything will.
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* Make sure the error reported is the one from the
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* syslogd failure.
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*/
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if (LogStat & LOG_CONS &&
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(fd = __open (_PATH_CONSOLE, O_WRONLY | O_NOCTTY
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| O_CLOEXEC, 0)) >= 0)
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{
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__dprintf (fd, "%s\r\n", buf + msgoff);
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__close (fd);
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}
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}
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}
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if (buf != failbuf)
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free (buf);
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out:
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/* End of critical section. */
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__libc_cleanup_pop (0);
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__libc_lock_unlock (syslog_lock);
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if (buf != failbuf)
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free (buf);
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}
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/* AF_UNIX address of local logger */
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@ -310,47 +291,49 @@ static const struct sockaddr_un SyslogAddr =
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};
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static void
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openlog_internal(const char *ident, int logstat, int logfac)
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openlog_internal (const char *ident, int logstat, int logfac)
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{
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if (ident != NULL)
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LogTag = ident;
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LogStat = logstat;
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if ((logfac &~ LOG_FACMASK) == 0)
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LogFacility = logfac;
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if (ident != NULL)
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LogTag = ident;
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LogStat = logstat;
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if ((logfac & ~LOG_FACMASK) == 0)
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LogFacility = logfac;
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int retry = 0;
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while (retry < 2) {
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if (LogFile == -1) {
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if (LogStat & LOG_NDELAY) {
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LogFile = __socket(AF_UNIX, LogType | SOCK_CLOEXEC, 0);
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if (LogFile == -1)
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return;
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}
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}
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if (LogFile != -1 && !connected)
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{
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int old_errno = errno;
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if (__connect(LogFile, &SyslogAddr, sizeof(SyslogAddr))
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||||
== -1)
|
||||
{
|
||||
int saved_errno = errno;
|
||||
int fd = LogFile;
|
||||
LogFile = -1;
|
||||
(void)__close(fd);
|
||||
__set_errno (old_errno);
|
||||
if (saved_errno == EPROTOTYPE)
|
||||
{
|
||||
/* retry with the other type: */
|
||||
LogType = (LogType == SOCK_DGRAM
|
||||
? SOCK_STREAM : SOCK_DGRAM);
|
||||
++retry;
|
||||
continue;
|
||||
}
|
||||
} else
|
||||
connected = true;
|
||||
}
|
||||
break;
|
||||
int retry = 0;
|
||||
while (retry < 2)
|
||||
{
|
||||
if (LogFile == -1)
|
||||
{
|
||||
if (LogStat & LOG_NDELAY)
|
||||
{
|
||||
LogFile = __socket (AF_UNIX, LogType | SOCK_CLOEXEC, 0);
|
||||
if (LogFile == -1)
|
||||
return;
|
||||
}
|
||||
}
|
||||
if (LogFile != -1 && !connected)
|
||||
{
|
||||
int old_errno = errno;
|
||||
if (__connect (LogFile, &SyslogAddr, sizeof (SyslogAddr)) == -1)
|
||||
{
|
||||
int saved_errno = errno;
|
||||
int fd = LogFile;
|
||||
LogFile = -1;
|
||||
__close (fd);
|
||||
__set_errno (old_errno);
|
||||
if (saved_errno == EPROTOTYPE)
|
||||
{
|
||||
/* retry with the other type: */
|
||||
LogType = LogType == SOCK_DGRAM ? SOCK_STREAM : SOCK_DGRAM;
|
||||
++retry;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
else
|
||||
connected = true;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
@ -395,16 +378,16 @@ closelog (void)
|
||||
int
|
||||
setlogmask (int pmask)
|
||||
{
|
||||
int omask;
|
||||
int omask;
|
||||
|
||||
/* Protect against multiple users. */
|
||||
__libc_lock_lock (syslog_lock);
|
||||
/* Protect against multiple users. */
|
||||
__libc_lock_lock (syslog_lock);
|
||||
|
||||
omask = LogMask;
|
||||
if (pmask != 0)
|
||||
LogMask = pmask;
|
||||
omask = LogMask;
|
||||
if (pmask != 0)
|
||||
LogMask = pmask;
|
||||
|
||||
__libc_lock_unlock (syslog_lock);
|
||||
__libc_lock_unlock (syslog_lock);
|
||||
|
||||
return (omask);
|
||||
return (omask);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user