diff options
Diffstat (limited to 'usr.sbin/iscsid/log.c')
| -rw-r--r-- | usr.sbin/iscsid/log.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/usr.sbin/iscsid/log.c b/usr.sbin/iscsid/log.c new file mode 100644 index 00000000000..088cb207775 --- /dev/null +++ b/usr.sbin/iscsid/log.c @@ -0,0 +1,225 @@ +/* $OpenBSD: log.c,v 1.1 2010/09/24 09:43:19 claudio Exp $ */ + +/* + * Copyright (c) 2009 Claudio Jeker <claudio@openbsd.org> + * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/socket.h> +#include <sys/uio.h> + +#include <scsi/iscsi.h> + +#include <errno.h> +#include <event.h> +#include <netdb.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <unistd.h> + +#include "iscsid.h" +#include "log.h" + +int debug; + +void logit(int, const char *, ...); + +void +log_init(int n_debug) +{ + extern char *__progname; + + debug = n_debug; + + if (!debug) + openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON); + + tzset(); +} + +void +logit(int pri, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vlog(pri, fmt, ap); + va_end(ap); +} + +void +vlog(int pri, const char *fmt, va_list ap) +{ + char *nfmt; + + if (debug) { + /* best effort in out of mem situations */ + if (asprintf(&nfmt, "%s\n", fmt) == -1) { + vfprintf(stderr, fmt, ap); + fprintf(stderr, "\n"); + } else { + vfprintf(stderr, nfmt, ap); + free(nfmt); + } + fflush(stderr); + } else + vsyslog(pri, fmt, ap); +} + +void +log_warn(const char *emsg, ...) +{ + char *nfmt; + va_list ap; + + /* best effort to even work in out of memory situations */ + if (emsg == NULL) + logit(LOG_CRIT, "%s", strerror(errno)); + else { + va_start(ap, emsg); + + if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { + /* we tried it... */ + vlog(LOG_CRIT, emsg, ap); + logit(LOG_CRIT, "%s", strerror(errno)); + } else { + vlog(LOG_CRIT, nfmt, ap); + free(nfmt); + } + va_end(ap); + } +} + +void +log_warnx(const char *emsg, ...) +{ + va_list ap; + + va_start(ap, emsg); + vlog(LOG_CRIT, emsg, ap); + va_end(ap); +} + +void +log_info(const char *emsg, ...) +{ + va_list ap; + + va_start(ap, emsg); + vlog(LOG_INFO, emsg, ap); + va_end(ap); +} + +void +log_debug(const char *emsg, ...) +{ + va_list ap; + + if (debug) { + va_start(ap, emsg); + vlog(LOG_DEBUG, emsg, ap); + va_end(ap); + } +} + +void +fatal(const char *emsg) +{ + if (emsg == NULL) + logit(LOG_CRIT, "fatal: %s", strerror(errno)); + else + if (errno) + logit(LOG_CRIT, "fatal: %s: %s", emsg, strerror(errno)); + else + logit(LOG_CRIT, "fatal: %s", emsg); + + exit(1); +} + +void +fatalx(const char *emsg) +{ + errno = 0; + fatal(emsg); +} + +void +log_hexdump(void *buf, size_t len) +{ + u_char b[16]; + size_t i, j, l; + + if (!debug) + return; + + for (i = 0; i < len; i += l) { + fprintf(stderr, "%4zi:", i); + l = sizeof(b) < len - i ? sizeof(b) : len - i; + bcopy((char *)buf + i, b, l); + + for (j = 0; j < sizeof(b); j++) { + if (j % 2 == 0) + fprintf(stderr, " "); + if (j % 8 == 0) + fprintf(stderr, " "); + if (j < l) + fprintf(stderr, "%02x", (int)b[j]); + else + fprintf(stderr, " "); + } + fprintf(stderr, " |"); + for (j = 0; j < l; j++) { + if (b[j] >= 0x20 && b[j] <= 0x7e) + fprintf(stderr, "%c", b[j]); + else + fprintf(stderr, "."); + } + fprintf(stderr, "|\n"); + } +} + +void +log_pdu(struct pdu *p, int all) +{ + struct iscsi_pdu *pdu; + void *b; + size_t s; + + if (!debug) + return; + + if (!(pdu = pdu_getbuf(p, NULL, PDU_HEADER))) { + log_debug("empty pdu"); + return; + } + + fprintf(stderr, "PDU: op %x%s flags %02x%02x%02x ahs %d len %d\n", + ISCSI_PDU_OPCODE(pdu->opcode), ISCSI_PDU_I(pdu) ? " I" : "", + pdu->flags, pdu->_reserved1[0], pdu->_reserved1[1], + pdu->ahslen, pdu->datalen[0] << 16 | pdu->datalen[1] << 8 | + pdu->datalen[2]); + fprintf(stderr, " lun %02x%02x%02x%02x%02x%02x%02x%02x itt %d " + "cmdsn %d expstatsn %d\n", pdu->lun[0], pdu->lun[1], pdu->lun[2], + pdu->lun[3], pdu->lun[4], pdu->lun[5], pdu->lun[6], pdu->lun[7], + ntohl(pdu->itt), ntohl(pdu->cmdsn), ntohl(pdu->expstatsn)); + log_hexdump(pdu, sizeof(*pdu)); + + if (all && (b = pdu_getbuf(p, &s, PDU_DATA))) + log_hexdump(b, s); +} |