procfs_list.h

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    1 /*
    2  * CDDL HEADER START
    3  *
    4  * The contents of this file are subject to the terms of the
    5  * Common Development and Distribution License (the "License").
    6  * You may not use this file except in compliance with the License.
    7  *
    8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
    9  * or https://opensource.org/licenses/CDDL-1.0.
   10  * See the License for the specific language governing permissions
   11  * and limitations under the License.
   12  *
   13  * When distributing Covered Code, include this CDDL HEADER in each
   14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   15  * If applicable, add the following below this CDDL HEADER, with the
   16  * fields enclosed by brackets "[]" replaced with your own identifying
   17  * information: Portions Copyright [yyyy] [name of copyright owner]
   18  *
   19  * CDDL HEADER END
   20  */
   21 /*
   22  * Copyright (c) 2018 by Delphix. All rights reserved.
   23  */
   24 
   25 #ifndef _SPL_PROCFS_LIST_H
   26 #define _SPL_PROCFS_LIST_H
   27 
   28 #include <sys/kstat.h>
   29 #include <sys/mutex.h>
   30 #include <linux/proc_fs.h>
   31 #include <linux/seq_file.h>
   32 
   33 typedef struct procfs_list procfs_list_t;
   34 struct procfs_list {
   35         /* Accessed only by user of a procfs_list */
   36         void            *pl_private;
   37 
   38         /*
   39          * Accessed both by user of a procfs_list and by procfs_list
   40          * implementation
   41          */
   42         kmutex_t        pl_lock;
   43         list_t          pl_list;
   44 
   45         /* Accessed only by procfs_list implementation */
   46         uint64_t        pl_next_id;
   47         int             (*pl_show)(struct seq_file *f, void *p);
   48         int             (*pl_show_header)(struct seq_file *f);
   49         int             (*pl_clear)(procfs_list_t *procfs_list);
   50         size_t          pl_node_offset;
   51         kstat_proc_entry_t      pl_kstat_entry;
   52 };
   53 
   54 typedef struct procfs_list_node {
   55         list_node_t     pln_link;
   56         uint64_t        pln_id;
   57 } procfs_list_node_t;
   58 
   59 void procfs_list_install(const char *module,
   60     const char *submodule,
   61     const char *name,
   62     mode_t mode,
   63     procfs_list_t *procfs_list,
   64     int (*show)(struct seq_file *f, void *p),
   65     int (*show_header)(struct seq_file *f),
   66     int (*clear)(procfs_list_t *procfs_list),
   67     size_t procfs_list_node_off);
   68 void procfs_list_uninstall(procfs_list_t *procfs_list);
   69 void procfs_list_destroy(procfs_list_t *procfs_list);
   70 
   71 void procfs_list_add(procfs_list_t *procfs_list, void *p);
   72 
   73 #endif  /* _SPL_PROCFS_LIST_H */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/include/os/linux/spl/sys/procfs_list.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/linux/spl/sys/procfs_list.h