| 1 | |
| 2 | |
| 3 | * Copyright (C) International Business Machines Corp., 2000-2004
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| 4 | * Portions Copyright (C) Christoph Hellwig, 2001-2002
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| 5 |
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| 6 |
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| 7 | #include <linux/fs.h>
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| 8 | #include <linux/ctype.h>
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| 9 | #include <linux/module.h>
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| 10 | #include <linux/proc_fs.h>
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| 11 | #include <linux/seq_file.h>
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| 12 | #include <linux/uaccess.h>
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| 13 | #include "jfs_incore.h"
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| 14 | #include "jfs_filsys.h"
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| 15 | #include "jfs_debug.h"
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| 16 |
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| 17 | #ifdef PROC_FS_JFS
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| 18 |
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| 19 | #ifdef CONFIG_JFS_DEBUG
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| 20 | static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
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| 21 | {
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| 22 | seq_printf(m, "%d\n", jfsloglevel);
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| 23 | return 0;
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| 24 | }
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| 25 |
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| 26 | static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
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| 27 | {
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| 28 | return single_open(file, jfs_loglevel_proc_show, NULL);
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| 29 | }
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| 30 |
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| 31 | static ssize_t jfs_loglevel_proc_write(struct file *file,
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| 32 | const char __user *buffer, size_t count, loff_t *ppos)
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| 33 | {
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| 34 | char c;
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| 35 |
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| 36 | if (get_user(c, buffer))
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| 37 | return -EFAULT;
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| 38 |
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| 39 |
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| 40 | if (c < '0' || c > '9')
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| 41 | return -EINVAL;
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| 42 | jfsloglevel = c - '0';
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| 43 | return count;
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| 44 | }
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| 45 |
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| 46 | static const struct proc_ops jfs_loglevel_proc_ops = {
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| 47 | .proc_open = jfs_loglevel_proc_open,
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| 48 | .proc_read = seq_read,
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| 49 | .proc_lseek = seq_lseek,
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| 50 | .proc_release = single_release,
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| 51 | .proc_write = jfs_loglevel_proc_write,
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| 52 | };
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| 53 | #endif
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| 54 |
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| 55 | void jfs_proc_init(void)
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| 56 | {
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| 57 | struct proc_dir_entry *base;
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| 58 |
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| 59 | base = proc_mkdir("fs/jfs", NULL);
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| 60 | if (!base)
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| 61 | return;
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| 62 |
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| 63 | #ifdef CONFIG_JFS_STATISTICS
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| 64 | proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
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| 65 | proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
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| 66 | proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
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| 67 | proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
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| 68 | #endif
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| 69 | #ifdef CONFIG_JFS_DEBUG
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| 70 | proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
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| 71 | proc_create("loglevel", 0, base, &jfs_loglevel_proc_ops);
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| 72 | #endif
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| 73 | }
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| 74 |
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| 75 | void jfs_proc_clean(void)
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| 76 | {
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| 77 | remove_proc_subtree("fs/jfs", NULL);
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| 78 | }
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| 79 |
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| 80 | #endif
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