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a887d653b3
There are several places where we use zfs_dbgmsg and %p to print pointers. In the Linux kernel, these values obfuscated to prevent information leaks which means the pointers aren't very useful for debugging crash dumps. We decided to restrict the permissions of dbgmsg (and some other kstats while we were at it) and print pointers with %px in zfs_dbgmsg as well as spl_dumpstack Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: John Gallagher <john.gallagher@delphix.com> Signed-off-by: sara hartse <sara.hartse@delphix.com> Closes #8467 Closes #8476
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2018 by Delphix. All rights reserved.
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*/
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#ifndef _SPL_PROCFS_LIST_H
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#define _SPL_PROCFS_LIST_H
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#include <sys/kstat.h>
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#include <sys/mutex.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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typedef struct procfs_list procfs_list_t;
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struct procfs_list {
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/* Accessed only by user of a procfs_list */
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void *pl_private;
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/*
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* Accessed both by user of a procfs_list and by procfs_list
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* implementation
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*/
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kmutex_t pl_lock;
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list_t pl_list;
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/* Accessed only by procfs_list implementation */
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uint64_t pl_next_id;
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int (*pl_show)(struct seq_file *f, void *p);
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int (*pl_show_header)(struct seq_file *f);
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int (*pl_clear)(procfs_list_t *procfs_list);
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size_t pl_node_offset;
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kstat_proc_entry_t pl_kstat_entry;
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};
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typedef struct procfs_list_node {
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list_node_t pln_link;
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uint64_t pln_id;
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} procfs_list_node_t;
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void procfs_list_install(const char *module,
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const char *name,
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mode_t mode,
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procfs_list_t *procfs_list,
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int (*show)(struct seq_file *f, void *p),
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int (*show_header)(struct seq_file *f),
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int (*clear)(procfs_list_t *procfs_list),
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size_t procfs_list_node_off);
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void procfs_list_uninstall(procfs_list_t *procfs_list);
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void procfs_list_destroy(procfs_list_t *procfs_list);
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void procfs_list_add(procfs_list_t *procfs_list, void *p);
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#endif /* _SPL_PROCFS_LIST_H */
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