mirror of https://gitee.com/openkylin/linux.git
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) International Business Machines Corp., 2000-2004
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* Portions Copyright (C) Christoph Hellwig, 2001-2002
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*/
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#include <linux/fs.h>
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#include <linux/ctype.h>
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#include <linux/module.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include "jfs_incore.h"
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#include "jfs_filsys.h"
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#include "jfs_debug.h"
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#ifdef PROC_FS_JFS /* see jfs_debug.h */
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#ifdef CONFIG_JFS_DEBUG
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static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
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{
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seq_printf(m, "%d\n", jfsloglevel);
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return 0;
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}
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static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, jfs_loglevel_proc_show, NULL);
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}
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static ssize_t jfs_loglevel_proc_write(struct file *file,
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const char __user *buffer, size_t count, loff_t *ppos)
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{
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char c;
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if (get_user(c, buffer))
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return -EFAULT;
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/* yes, I know this is an ASCIIism. --hch */
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if (c < '0' || c > '9')
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return -EINVAL;
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jfsloglevel = c - '0';
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return count;
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}
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static const struct proc_ops jfs_loglevel_proc_ops = {
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.proc_open = jfs_loglevel_proc_open,
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.proc_read = seq_read,
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.proc_lseek = seq_lseek,
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.proc_release = single_release,
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.proc_write = jfs_loglevel_proc_write,
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};
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#endif
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void jfs_proc_init(void)
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{
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struct proc_dir_entry *base;
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base = proc_mkdir("fs/jfs", NULL);
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if (!base)
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return;
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#ifdef CONFIG_JFS_STATISTICS
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proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
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proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
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proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
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proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
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#endif
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#ifdef CONFIG_JFS_DEBUG
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proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
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proc_create("loglevel", 0, base, &jfs_loglevel_proc_ops);
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#endif
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}
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void jfs_proc_clean(void)
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{
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remove_proc_subtree("fs/jfs", NULL);
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}
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#endif /* PROC_FS_JFS */
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