diff options
Diffstat (limited to 'lib/libzpool/zfs_debug.c')
| -rw-r--r-- | lib/libzpool/zfs_debug.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/lib/libzpool/zfs_debug.c b/lib/libzpool/zfs_debug.c deleted file mode 100644 index 3e5cff76abe9..000000000000 --- a/lib/libzpool/zfs_debug.c +++ /dev/null @@ -1,125 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (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 https://opensource.org/licenses/CDDL-1.0. - * 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 (c) 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012, 2014 by Delphix. All rights reserved. - * Copyright (c) 2024, Rob Norris <robn@despairlabs.com> - */ - -#include <sys/zfs_context.h> - -typedef struct zfs_dbgmsg { - list_node_t zdm_node; - uint64_t zdm_timestamp; - uint_t zdm_size; - char zdm_msg[]; /* variable length allocation */ -} zfs_dbgmsg_t; - -static list_t zfs_dbgmsgs; -static kmutex_t zfs_dbgmsgs_lock; -static uint_t zfs_dbgmsg_size = 0; -static uint_t zfs_dbgmsg_maxsize = 4<<20; /* 4MB */ - -int zfs_dbgmsg_enable = B_TRUE; - -static void -zfs_dbgmsg_purge(uint_t max_size) -{ - while (zfs_dbgmsg_size > max_size) { - zfs_dbgmsg_t *zdm = list_remove_head(&zfs_dbgmsgs); - if (zdm == NULL) - return; - - uint_t size = zdm->zdm_size; - kmem_free(zdm, size); - zfs_dbgmsg_size -= size; - } -} - -void -zfs_dbgmsg_init(void) -{ - list_create(&zfs_dbgmsgs, sizeof (zfs_dbgmsg_t), - offsetof(zfs_dbgmsg_t, zdm_node)); - mutex_init(&zfs_dbgmsgs_lock, NULL, MUTEX_DEFAULT, NULL); -} - -void -zfs_dbgmsg_fini(void) -{ - zfs_dbgmsg_t *zdm; - while ((zdm = list_remove_head(&zfs_dbgmsgs))) - umem_free(zdm, zdm->zdm_size); - mutex_destroy(&zfs_dbgmsgs_lock); -} - -void -__set_error(const char *file, const char *func, int line, int err) -{ - if (zfs_flags & ZFS_DEBUG_SET_ERROR) - __dprintf(B_FALSE, file, func, line, "error %lu", - (ulong_t)err); -} - -void -__zfs_dbgmsg(char *buf) -{ - uint_t size = sizeof (zfs_dbgmsg_t) + strlen(buf) + 1; - zfs_dbgmsg_t *zdm = umem_zalloc(size, KM_SLEEP); - zdm->zdm_size = size; - zdm->zdm_timestamp = gethrestime_sec(); - strcpy(zdm->zdm_msg, buf); - - mutex_enter(&zfs_dbgmsgs_lock); - list_insert_tail(&zfs_dbgmsgs, zdm); - zfs_dbgmsg_size += size; - zfs_dbgmsg_purge(zfs_dbgmsg_maxsize); - mutex_exit(&zfs_dbgmsgs_lock); -} - -void -zfs_dbgmsg_print(int fd, const char *tag) -{ - ssize_t ret __attribute__((unused)); - - mutex_enter(&zfs_dbgmsgs_lock); - - /* - * We use write() in this function instead of printf() - * so it is safe to call from a signal handler. - */ - ret = write(fd, "ZFS_DBGMSG(", 11); - ret = write(fd, tag, strlen(tag)); - ret = write(fd, ") START:\n", 9); - - for (zfs_dbgmsg_t *zdm = list_head(&zfs_dbgmsgs); zdm != NULL; - zdm = list_next(&zfs_dbgmsgs, zdm)) { - ret = write(fd, zdm->zdm_msg, strlen(zdm->zdm_msg)); - ret = write(fd, "\n", 1); - } - - ret = write(fd, "ZFS_DBGMSG(", 11); - ret = write(fd, tag, strlen(tag)); - ret = write(fd, ") END\n", 6); - - mutex_exit(&zfs_dbgmsgs_lock); -} |