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Diffstat (limited to 'usr/src/uts/common/os/printf.c')
| -rw-r--r-- | usr/src/uts/common/os/printf.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/usr/src/uts/common/os/printf.c b/usr/src/uts/common/os/printf.c new file mode 100644 index 0000000000..d21e8cb029 --- /dev/null +++ b/usr/src/uts/common/os/printf.c @@ -0,0 +1,321 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2003 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/sysmacros.h> +#include <sys/inline.h> +#include <sys/varargs.h> +#include <sys/systm.h> +#include <sys/conf.h> +#include <sys/cmn_err.h> +#include <sys/syslog.h> +#include <sys/log.h> +#include <sys/proc.h> +#include <sys/vnode.h> +#include <sys/session.h> +#include <sys/stream.h> +#include <sys/kmem.h> +#include <sys/kobj.h> +#include <sys/atomic.h> +#include <sys/console.h> +#include <sys/cpuvar.h> +#include <sys/modctl.h> +#include <sys/reboot.h> +#include <sys/debug.h> +#include <sys/panic.h> +#include <sys/spl.h> +#include <sys/zone.h> + +/* + * In some debugging situations it's useful to log all messages to panicbuf, + * which is persistent across reboots (on most platforms). The range + * panicbuf[panicbuf_log..PANICBUFSIZE-1] may be used for this purpose. + * By default, panicbuf_log == PANICBUFSIZE and no messages are logged. + * To enable panicbuf logging, set panicbuf_log to a small value, say 1K; + * this will reserve 1K for panic information and 7K for message logging. + */ +uint32_t panicbuf_log = PANICBUFSIZE; +uint32_t panicbuf_index = PANICBUFSIZE; + +static int aask, aok; +static int ce_to_sl[CE_IGNORE] = { SL_NOTE, SL_NOTE, SL_WARN, SL_FATAL }; +static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" }; +static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" }; + +static void +cprintf(const char *fmt, va_list adx, int sl, const char *prefix, + const char *suffix, void *site, int mid, int sid, int level, + zoneid_t zoneid) +{ + uint32_t msgid; + size_t bufsize = LOG_MSGSIZE; + char buf[LOG_MSGSIZE]; + char *bufp = buf; + char *body, *msgp, *bufend; + mblk_t *mp; + int s, on_intr; + size_t len; + + s = splhi(); + on_intr = CPU_ON_INTR(CPU) || + (interrupts_unleashed && (spltoipl(s) > LOCK_LEVEL)); + splx(s); + + ASSERT(zoneid == GLOBAL_ZONEID || !on_intr); + + STRLOG_MAKE_MSGID(fmt, msgid); + + if (strchr("^!?", fmt[0]) != NULL) { + if (fmt[0] == '^') + sl |= SL_CONSONLY; + else if (fmt[0] == '!' || + (prefix[0] == '\0' && !(boothowto & RB_VERBOSE))) + sl = (sl & ~(SL_USER | SL_NOTE)) | SL_LOGONLY; + fmt++; + } + + if ((sl & SL_USER) && (MUTEX_HELD(&pidlock) || on_intr)) { + zoneid = getzoneid(); + sl = sl & ~(SL_USER | SL_LOGONLY) | SL_CONSOLE; + } + +retry: + bufend = bufp + bufsize; + msgp = bufp; + body = msgp += snprintf(msgp, bufend - msgp, + "%s: [ID %u FACILITY_AND_PRIORITY] ", + mod_containing_pc(site), msgid); + msgp += snprintf(msgp, bufend - msgp, prefix); + msgp += vsnprintf(msgp, bufend - msgp, fmt, adx); + msgp += snprintf(msgp, bufend - msgp, suffix); + len = strlen(body); + + if (((sl & SL_CONSONLY) && panicstr) || + (zoneid == GLOBAL_ZONEID && log_global.lz_active == 0)) { + console_printf("%s", body); + goto out; + } + + if (msgp - bufp >= bufsize && !on_intr) { + ASSERT(bufp == buf); + bufsize = msgp - bufp + 1; + bufp = kmem_alloc(bufsize, KM_NOSLEEP); + if (bufp != NULL) + goto retry; + bufsize = LOG_MSGSIZE; + bufp = buf; + } + + mp = log_makemsg(mid, sid, level, sl, LOG_KERN, bufp, + MIN(bufsize, msgp - bufp + 1), on_intr); + if (mp == NULL) { + if ((sl & (SL_CONSOLE | SL_LOGONLY)) == SL_CONSOLE && !on_intr) + console_printf("%s", body); + goto out; + } + + if (sl & SL_USER) { + ssize_t resid; + sess_t *sessp; + + mutex_enter(&pidlock); + sessp = curproc->p_sessp; + SESS_HOLD(sessp); + TTY_HOLD(sessp); + mutex_exit(&pidlock); + if (sessp->s_vp) + (void) vn_rdwr(UIO_WRITE, sessp->s_vp, + body, len, 0LL, UIO_SYSSPACE, + FAPPEND, (rlim64_t)LOG_HIWAT, kcred, &resid); + mutex_enter(&pidlock); + TTY_RELE(sessp); + SESS_RELE(sessp); + mutex_exit(&pidlock); + } + + if (on_intr && !panicstr) { + (void) putq(log_intrq, mp); + softcall((void (*)(void *))log_flushq, log_intrq); + } else { + log_sendmsg(mp, zoneid); + } +out: + if (panicbuf_log + len < PANICBUFSIZE) { + uint32_t old, new; + do { + old = panicbuf_index; + new = old + len; + if (new >= PANICBUFSIZE) + new = panicbuf_log + len; + } while (cas32(&panicbuf_index, old, new) != old); + bcopy(body, &panicbuf[new - len], len); + } + if (bufp != buf) + kmem_free(bufp, bufsize); +} + +void +vzprintf(zoneid_t zoneid, const char *fmt, va_list adx) +{ + cprintf(fmt, adx, SL_CONSOLE | SL_NOTE, "", "", caller(), 0, 0, 0, + zoneid); +} + +void +vprintf(const char *fmt, va_list adx) +{ + vzprintf(GLOBAL_ZONEID, fmt, adx); +} + +/*PRINTFLIKE1*/ +void +printf(const char *fmt, ...) +{ + va_list adx; + + va_start(adx, fmt); + cprintf(fmt, adx, SL_CONSOLE | SL_NOTE, "", "", caller(), 0, 0, 0, + GLOBAL_ZONEID); + va_end(adx); +} + +/*PRINTFLIKE2*/ +void +zprintf(zoneid_t zoneid, const char *fmt, ...) +{ + va_list adx; + + va_start(adx, fmt); + cprintf(fmt, adx, SL_CONSOLE | SL_NOTE, "", "", caller(), 0, 0, 0, + zoneid); + va_end(adx); +} + +void +vuprintf(const char *fmt, va_list adx) +{ + cprintf(fmt, adx, SL_CONSOLE | SL_LOGONLY | SL_USER | SL_NOTE, + "", "", caller(), 0, 0, 0, GLOBAL_ZONEID); +} + +/*PRINTFLIKE1*/ +void +uprintf(const char *fmt, ...) +{ + va_list adx; + + va_start(adx, fmt); + cprintf(fmt, adx, SL_CONSOLE | SL_LOGONLY | SL_USER | SL_NOTE, + "", "", caller(), 0, 0, 0, GLOBAL_ZONEID); + va_end(adx); +} + +void +vzcmn_err(zoneid_t zoneid, int ce, const char *fmt, va_list adx) +{ + if (ce == CE_PANIC) + vpanic(fmt, adx); + if ((uint_t)ce < CE_IGNORE) + cprintf(fmt, adx, ce_to_sl[ce] | SL_CONSOLE, + ce_prefix[ce], ce_suffix[ce], caller(), 0, 0, 0, + zoneid); +} + +void +vcmn_err(int ce, const char *fmt, va_list adx) +{ + vzcmn_err(GLOBAL_ZONEID, ce, fmt, adx); +} + +/*PRINTFLIKE2*/ +void +cmn_err(int ce, const char *fmt, ...) +{ + va_list adx; + + va_start(adx, fmt); + if (ce == CE_PANIC) + vpanic(fmt, adx); + if ((uint_t)ce < CE_IGNORE) + cprintf(fmt, adx, ce_to_sl[ce] | SL_CONSOLE, + ce_prefix[ce], ce_suffix[ce], caller(), 0, 0, 0, + GLOBAL_ZONEID); + va_end(adx); +} + +/*PRINTFLIKE3*/ +void +zcmn_err(zoneid_t zoneid, int ce, const char *fmt, ...) +{ + va_list adx; + + va_start(adx, fmt); + if (ce == CE_PANIC) + vpanic(fmt, adx); + if ((uint_t)ce < CE_IGNORE) + cprintf(fmt, adx, ce_to_sl[ce] | SL_CONSOLE, ce_prefix[ce], + ce_suffix[ce], caller(), 0, 0, 0, zoneid); + va_end(adx); +} + +int +assfail(const char *a, const char *f, int l) +{ + if (aask) { + printf("ASSERTION CAUGHT: %s, file: %s, line: %d", a, f, l); + debug_enter(NULL); + } + + if (!aok && !panicstr) + panic("assertion failed: %s, file: %s, line: %d", a, f, l); + + return (0); +} + +int +strlog(short mid, short sid, char level, ushort_t sl, char *fmt, ...) +{ + if (sl & log_global.lz_active) { + va_list adx; + va_start(adx, fmt); + cprintf(fmt, adx, sl, "", "", caller(), mid, sid, level, + GLOBAL_ZONEID); + va_end(adx); + } + return (1); +} + +int +vstrlog(short mid, short sid, char level, ushort_t sl, char *fmt, va_list adx) +{ + if (sl & log_global.lz_active) + cprintf(fmt, adx, sl, "", "", caller(), mid, sid, level, + GLOBAL_ZONEID); + return (1); +} |