xnu-1699.22.73.tar.gz

[apple/xnu.git] / bsd / kern / subr_prf.c

diff --git a/bsd/kern/subr_prf.c b/bsd/kern/subr_prf.c
index b17e8a131bff34995f9dfbb9ab5a6f19ff0c520e..45bddb4312660c187393b1377bf4c2e429bf1bbd 100644 (file)
--- a/bsd/kern/subr_prf.c
+++ b/bsd/kern/subr_prf.c
@@ -1,31 +1,29 @@
 /*
 /*

- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.

  * 
  * 

- * This file contains Original Code and/or Modifications of Original Code 
- * as defined in and that are subject to the Apple Public Source License 
- * Version 2.0 (the 'License'). You may not use this file except in 
- * compliance with the License.  The rights granted to you under the 
- * License may not be used to create, or enable the creation or 
- * redistribution of, unlawful or unlicensed copies of an Apple operating 
- * system, or to circumvent, violate, or enable the circumvention or 
- * violation of, any terms of an Apple operating system software license 
- * agreement.
- *
- * Please obtain a copy of the License at 
- * http://www.opensource.apple.com/apsl/ and read it before using this 
- * file.
- *
- * The Original Code and all software distributed under the License are 
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and

  * limitations under the License.
  * limitations under the License.

- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-


@@ -103,6 +101,13 @@
 #include <machine/spl.h>
 #include <libkern/libkern.h>
 
 #include <machine/spl.h>
 #include <libkern/libkern.h>
 

+/* for vaddlog(): the following are implemented in osfmk/kern/printf.c  */
+extern void bsd_log_lock(void);
+extern void bsd_log_unlock(void);
+
+/* Keep this around only because it's exported */
+void _printf(int, struct tty *, const char *, ...);
+

 struct snprintf_arg {
        char *str;
        size_t remain;
 struct snprintf_arg {
        char *str;
        size_t remain;


@@ -116,32 +121,24 @@ struct snprintf_arg {
  */
 extern const char      *panicstr;
 
  */
 extern const char      *panicstr;
 

-extern cnputc();                       /* standard console putc */
-int    (*v_putc)() = cnputc;           /* routine to putc on virtual console */
+extern void cnputc(char);              /* standard console putc */
+void   (*v_putc)(char) = cnputc;       /* routine to putc on virtual console */

 
 extern struct tty cons;                /* standard console tty */
 extern struct  tty *constty;           /* pointer to console "window" tty */
 extern int  __doprnt(const char *fmt,
 
 extern struct tty cons;                /* standard console tty */
 extern struct  tty *constty;           /* pointer to console "window" tty */
 extern int  __doprnt(const char *fmt,

-                                        va_list    *argp,
-                                        void       (*putc)(int, void *arg),
+                                        va_list    argp,
+                                        void       (*)(int, void *),

                                         void       *arg,
                                         int        radix);
 
 /*
  *     Record cpu that panic'd and lock around panic data
  */
                                         void       *arg,
                                         int        radix);
 
 /*
  *     Record cpu that panic'd and lock around panic data
  */

+static void printn(uint32_t n, int b, int flags, struct tty *ttyp, int zf, int fld_size);

 
 

-static void puts(const char *s, int flags, struct tty *ttyp);
-static void printn(u_long n, int b, int flags, struct tty *ttyp, int zf, int fld_size);
-
-#if    NCPUS > 1
-boolean_t new_printf_cpu_number;  /* do we need to output who we are */
-#endif
-
-extern void logwakeup();
-extern void halt_cpu();
-extern boot();
-
+extern void logwakeup(void);
+extern void halt_cpu(void);

 
 static void
 snprintf_func(int ch, void *arg);
 
 static void
 snprintf_func(int ch, void *arg);


@@ -161,64 +158,90 @@ static void putchar(int c, void *arg);
 void
 uprintf(const char *fmt, ...)
 {
 void
 uprintf(const char *fmt, ...)
 {

-       register struct proc *p = current_proc();
+       struct proc *p = current_proc();

        struct putchar_args pca;
        va_list ap;
        struct putchar_args pca;
        va_list ap;

+       struct session *sessp;

        
        

-       pca.flags = TOTTY;
-       pca.tty   = (struct tty *)p->p_session->s_ttyp;
+       sessp = proc_session(p);

 
 

-       if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) {
+       if (p->p_flag & P_CONTROLT && sessp != SESSION_NULL && sessp->s_ttyvp) {
+               pca.flags = TOTTY;
+               pca.tty   = SESSION_TP(sessp);
+               if (pca.tty != NULL)
+                       tty_lock(pca.tty);

                va_start(ap, fmt);
                va_start(ap, fmt);

-               __doprnt(fmt, &ap, putchar, &pca, 10);
+               __doprnt(fmt, ap, putchar, &pca, 10);

                va_end(ap);
                va_end(ap);

+               if (pca.tty != NULL)
+               tty_unlock(pca.tty);

        }
        }

+       if (sessp != SESSION_NULL)
+               session_rele(sessp);

 }
 
 tpr_t
 }
 
 tpr_t

-tprintf_open(p)
-       register struct proc *p;
+tprintf_open(struct proc *p)

 {
 {

-       if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) {
-               SESSHOLD(p->p_session);
-               return ((tpr_t) p->p_session);
+       struct session * sessp;
+
+       sessp = proc_session(p);
+
+       if (p->p_flag & P_CONTROLT && sessp->s_ttyvp) {
+               return ((tpr_t)sessp);

        }
        }

+       if (sessp != SESSION_NULL)
+               session_rele(sessp);
+

        return ((tpr_t) NULL);
 }
 
 void
        return ((tpr_t) NULL);
 }
 
 void

-tprintf_close(sess)
-       tpr_t sess;
+tprintf_close(tpr_t sessp)

 {
 {

-       if (sess)
-               SESSRELE((struct session *) sess);
+       if (sessp)
+               session_rele((struct session *) sessp);

 }
 
 /*
  * tprintf prints on the controlling terminal associated
  * with the given session.
 }
 
 /*
  * tprintf prints on the controlling terminal associated
  * with the given session.

+ *
+ * NOTE:       No one else should call this function!!!

  */
 void
 tprintf(tpr_t tpr, const char *fmt, ...)
 {
  */
 void
 tprintf(tpr_t tpr, const char *fmt, ...)
 {

-       register struct session *sess = (struct session *)tpr;
-       struct tty *tp = NULL;
+       struct session *sess = (struct session *)tpr;
+       struct tty *tp = TTY_NULL;

        int flags = TOLOG;
        va_list ap;
        struct putchar_args pca;
 
        logpri(LOG_INFO);
        int flags = TOLOG;
        va_list ap;
        struct putchar_args pca;
 
        logpri(LOG_INFO);

-       if (sess && sess->s_ttyvp && ttycheckoutq(sess->s_ttyp, 0)) {
-               flags |= TOTTY;
-               tp = sess->s_ttyp;
+
+       if (sess && (tp = SESSION_TP(sess)) != TTY_NULL) {
+               /* ttycheckoutq(), tputchar() require a locked tp */
+               tty_lock(tp);
+               if(ttycheckoutq(tp, 0)) {
+                       flags |= TOTTY;
+                       /* going to the tty; leave locked */
+               } else {
+                       /* not going to the tty... */
+                       tty_unlock(tp);
+                       tp = TTY_NULL;
+               }

        }
        
        pca.flags = flags;
        pca.tty   = tp;
        va_start(ap, fmt);
        }
        
        pca.flags = flags;
        pca.tty   = tp;
        va_start(ap, fmt);

-       __doprnt(fmt, &ap, putchar, &pca, 10);
+       __doprnt(fmt, ap, putchar, &pca, 10);

        va_end(ap);
 
        va_end(ap);
 

+       if (tp != NULL)
+               tty_unlock(tp); /* lock/unlock is guarded by tp, above */
+

        logwakeup();
 }
 
        logwakeup();
 }
 


@@ -226,6 +249,10 @@ tprintf(tpr_t tpr, const char *fmt, ...)
  * Ttyprintf displays a message on a tty; it should be used only by
  * the tty driver, or anything that knows the underlying tty will not
  * be revoke(2)'d away.  Other callers should use tprintf.
  * Ttyprintf displays a message on a tty; it should be used only by
  * the tty driver, or anything that knows the underlying tty will not
  * be revoke(2)'d away.  Other callers should use tprintf.

+ *
+ * Locks:      It is assumed that the tty_lock() is held over the call
+ *             to this function.  Ensuring this is the responsibility
+ *             of the caller.

  */
 void
 ttyprintf(struct tty *tp, const char *fmt, ...)
  */
 void
 ttyprintf(struct tty *tp, const char *fmt, ...)


@@ -238,116 +265,104 @@ ttyprintf(struct tty *tp, const char *fmt, ...)
                pca.tty   = tp;
                
                va_start(ap, fmt);
                pca.tty   = tp;
                
                va_start(ap, fmt);

-               __doprnt(fmt, &ap, putchar, &pca, 10);
+               __doprnt(fmt, ap, putchar, &pca, 10);

                va_end(ap);
        }
 }
 
                va_end(ap);
        }
 }
 

+

 extern int log_open;
 
 
 void
 extern int log_open;
 
 
 void

-logpri(level)
-       int level;
+logpri(int level)

 {
        struct putchar_args pca;
        pca.flags = TOLOG;
        pca.tty   = NULL;
        
        putchar('<', &pca);
 {
        struct putchar_args pca;
        pca.flags = TOLOG;
        pca.tty   = NULL;
        
        putchar('<', &pca);

-       printn((u_long)level, 10, TOLOG, (struct tty *)0, 0, 0);
+       printn((uint32_t)level, 10, TOLOG, (struct tty *)0, 0, 0);

        putchar('>', &pca);
 }
 
        putchar('>', &pca);
 }
 

-void
-addlog(const char *fmt, ...)
+static void
+_logtime(const char *fmt, ...)

 {
 {

-       register s = splhigh();

        va_list ap;
        va_list ap;

+       va_start(ap, fmt);
+       vaddlog(fmt, ap);
+       va_end(ap);
+}
+
+void
+logtime(time_t secs)
+{
+       _logtime("         0 [Time %ld] [Message ", secs);
+}
+
+int
+vaddlog(const char *fmt, va_list ap)
+{

        struct putchar_args pca;
 
        struct putchar_args pca;
 

-       pca.flags = TOLOG;
+       pca.flags = TOLOGLOCKED;

        pca.tty   = NULL;
 
        pca.tty   = NULL;
 

-       va_start(ap, fmt);
-       __doprnt(fmt, &ap, putchar, &pca, 10);
-       
-       splx(s);

        if (!log_open) {
        if (!log_open) {

-               pca.flags = TOCONS;
-               __doprnt(fmt, &ap, putchar, &pca, 10);
+               pca.flags |= TOCONS;

        }
        }

-       va_end(ap);
-       logwakeup();
-}
-void _printf(int flags, struct tty *ttyp, const char *format, ...)
-{
-       va_list ap;
-       struct putchar_args pca;

 
 

-       pca.flags = flags;
-       pca.tty   = ttyp;
+       bsd_log_lock();
+       __doprnt(fmt, ap, putchar, &pca, 10);
+       bsd_log_unlock();

        
        

-       va_start(ap, format);
-       __doprnt(format, &ap, putchar, &pca, 10);
-       va_end(ap);
+       logwakeup();
+       return 0;

 }
 
 }
 

-int prf(const char *fmt, va_list ap, int flags, struct tty *ttyp)
+void
+_printf(int flags, struct tty *ttyp, const char *format, ...)

 {
 {

+       va_list ap;

        struct putchar_args pca;
 
        pca.flags = flags;
        pca.tty   = ttyp;
 
        struct putchar_args pca;
 
        pca.flags = flags;
        pca.tty   = ttyp;
 

-#if    NCPUS > 1
-    int cpun = cpu_number();
-
-    if(ttyp == 0) {
-       } else
-               TTY_LOCK(ttyp);
-
-       if (cpun != master_cpu)
-           new_printf_cpu_number = TRUE;
+       if (ttyp != NULL) {
+               tty_lock(ttyp);
+       
+               va_start(ap, format);
+               __doprnt(format, ap, putchar, &pca, 10);
+               va_end(ap);

 
 

-       if (new_printf_cpu_number) {
-               putchar('{', flags, ttyp);
-               printn((u_long)cpun, 10, flags, ttyp, 0, 0);
-               putchar('}', flags, ttyp);
+               tty_unlock(ttyp);

        }
        }

-#endif /* NCPUS > 1 */
-         
-       __doprnt(fmt, &ap, putchar, &pca, 10);
-
-#if    NCPUS > 1
-       if(ttyp == 0) {
-       } else
-               TTY_UNLOCK(ttyp);
-#endif
- 
-       return 0;

 }
 
 }
 

-static void puts(const char *s, int flags, struct tty *ttyp)
+int
+prf(const char *fmt, va_list ap, int flags, struct tty *ttyp)

 {
 {

-       register char c;

        struct putchar_args pca;
 
        pca.flags = flags;
        pca.tty   = ttyp;
 
        struct putchar_args pca;
 
        pca.flags = flags;
        pca.tty   = ttyp;
 

-       while ((c = *s++))
-               putchar(c, &pca);
+       __doprnt(fmt, ap, putchar, &pca, 10);
+
+       return 0;

 }
 
 /*
  * Printn prints a number n in base b.
  * We don't use recursion to avoid deep kernel stacks.
  */
 }
 
 /*
  * Printn prints a number n in base b.
  * We don't use recursion to avoid deep kernel stacks.
  */

-static void printn(u_long n, int b, int flags, struct tty *ttyp, int zf, int fld_size)
+static void
+printn(uint32_t n, int b, int flags, struct tty *ttyp, int zf, int fld_size)

 {
        char prbuf[11];
 {
        char prbuf[11];

-       register char *cp;
+       char *cp;

        struct putchar_args pca;
 
        pca.flags = flags;
        struct putchar_args pca;
 
        pca.flags = flags;


@@ -388,13 +403,15 @@ void tablefull(const char *tab)
  * Print a character on console or users terminal.
  * If destination is console then the last MSGBUFS characters
  * are saved in msgbuf for inspection later.
  * Print a character on console or users terminal.
  * If destination is console then the last MSGBUFS characters
  * are saved in msgbuf for inspection later.

+ *
+ * Locks:      If TOTTY is set, we assume that the tty lock is held
+ *             over the call to this function.

  */
 /*ARGSUSED*/
 void
 putchar(int c, void *arg)
 {
        struct putchar_args *pca = arg;
  */
 /*ARGSUSED*/
 void
 putchar(int c, void *arg)
 {
        struct putchar_args *pca = arg;

-       register struct msgbuf *mbp;

        char **sp = (char**) pca->tty;
 
        if (panicstr)
        char **sp = (char**) pca->tty;
 
        if (panicstr)


@@ -408,6 +425,8 @@ putchar(int c, void *arg)
                constty = 0;
        if ((pca->flags & TOLOG) && c != '\0' && c != '\r' && c != 0177)
                log_putc(c);
                constty = 0;
        if ((pca->flags & TOLOG) && c != '\0' && c != '\r' && c != 0177)
                log_putc(c);

+       if ((pca->flags & TOLOGLOCKED) && c != '\0' && c != '\r' && c != 0177)
+               log_putc_locked(c);

        if ((pca->flags & TOCONS) && constty == 0 && c != '\0')
                (*v_putc)(c);
        if (pca->flags & TOSTR) {
        if ((pca->flags & TOCONS) && constty == 0 && c != '\0')
                (*v_putc)(c);
        if (pca->flags & TOSTR) {


@@ -416,10 +435,22 @@ putchar(int c, void *arg)
        }
 }
 
        }
 }
 

+int
+vprintf(const char *fmt, va_list ap)
+{
+       struct putchar_args pca;

 
 

+       pca.flags = TOLOG | TOCONS;
+       pca.tty   = NULL;
+       __doprnt(fmt, ap, putchar, &pca, 10);
+       return 0;
+}

 
 /*
  * Scaled down version of vsprintf(3).
 
 /*
  * Scaled down version of vsprintf(3).

+ *
+ * Deprecation Warning:
+ *     vsprintf() is being deprecated. Please use vsnprintf() instead. 

  */
 int
 vsprintf(char *buf, const char *cfmt, va_list ap)
  */
 int
 vsprintf(char *buf, const char *cfmt, va_list ap)


@@ -430,7 +461,7 @@ vsprintf(char *buf, const char *cfmt, va_list ap)
        info.str = buf;
        info.remain = 999999;
 
        info.str = buf;
        info.remain = 999999;
 

-       retval = __doprnt(cfmt, &ap, snprintf_func, &info, 10);
+       retval = __doprnt(cfmt, ap, snprintf_func, &info, 10);

        if (info.remain >= 1) {
                *info.str++ = '\0';
        }
        if (info.remain >= 1) {
                *info.str++ = '\0';
        }


@@ -463,7 +494,7 @@ vsnprintf(char *str, size_t size, const char *format, va_list ap)
 
        info.str = str;
        info.remain = size;
 
        info.str = str;
        info.remain = size;

-       retval = __doprnt(format, &ap, snprintf_func, &info, 10);
+       retval = __doprnt(format, ap, snprintf_func, &info, 10);

        if (info.remain >= 1)
                *info.str++ = '\0';
        return retval;
        if (info.remain >= 1)
                *info.str++ = '\0';
        return retval;


@@ -483,7 +514,7 @@ snprintf_func(int ch, void *arg)
 int
 kvprintf(char const *fmt, void (*func)(int, void*), void *arg, int radix, va_list ap)
 {
 int
 kvprintf(char const *fmt, void (*func)(int, void*), void *arg, int radix, va_list ap)
 {

-       __doprnt(fmt, &ap, func, arg, radix);
+       __doprnt(fmt, ap, func, arg, radix);

        return 0;
 }
 
        return 0;
 }