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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | /* * Copyright (C) International Business Machines Corp., 2000-2004 * Portions Copyright (C) Christoph Hellwig, 2001-2002 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/fs.h> #include <linux/ctype.h> #include <linux/module.h> #include <linux/proc_fs.h> #include <asm/uaccess.h> #include "jfs_incore.h" #include "jfs_filsys.h" #include "jfs_debug.h" #ifdef CONFIG_JFS_DEBUG void dump_mem(char *label, void *data, int length) { int i, j; int *intptr = data; char *charptr = data; char buf[10], line[80]; printk("%s: dump of %d bytes of data at 0x%p\n\n", label, length, data); for (i = 0; i < length; i += 16) { line[0] = 0; for (j = 0; (j < 4) && (i + j * 4 < length); j++) { sprintf(buf, " %08x", intptr[i / 4 + j]); strcat(line, buf); } buf[0] = ' '; buf[2] = 0; for (j = 0; (j < 16) && (i + j < length); j++) { buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.'; strcat(line, buf); } printk("%s\n", line); } } #endif #ifdef PROC_FS_JFS /* see jfs_debug.h */ static struct proc_dir_entry *base; #ifdef CONFIG_JFS_DEBUG static int loglevel_read(char *page, char **start, off_t off, int count, int *eof, void *data) { int len; len = sprintf(page, "%d\n", jfsloglevel); len -= off; *start = page + off; if (len > count) len = count; else *eof = 1; if (len < 0) len = 0; return len; } static int loglevel_write(struct file *file, const char __user *buffer, unsigned long count, void *data) { char c; if (get_user(c, buffer)) return -EFAULT; /* yes, I know this is an ASCIIism. --hch */ if (c < '0' || c > '9') return -EINVAL; jfsloglevel = c - '0'; return count; } #endif static struct { const char *name; read_proc_t *read_fn; write_proc_t *write_fn; } Entries[] = { #ifdef CONFIG_JFS_STATISTICS { "lmstats", jfs_lmstats_read, }, { "txstats", jfs_txstats_read, }, { "xtstat", jfs_xtstat_read, }, { "mpstat", jfs_mpstat_read, }, #endif #ifdef CONFIG_JFS_DEBUG { "TxAnchor", jfs_txanchor_read, }, { "loglevel", loglevel_read, loglevel_write } #endif }; #define NPROCENT ARRAY_SIZE(Entries) void jfs_proc_init(void) { int i; if (!(base = proc_mkdir("jfs", proc_root_fs))) return; base->owner = THIS_MODULE; for (i = 0; i < NPROCENT; i++) { struct proc_dir_entry *p; if ((p = create_proc_entry(Entries[i].name, 0, base))) { p->read_proc = Entries[i].read_fn; p->write_proc = Entries[i].write_fn; } } } void jfs_proc_clean(void) { int i; if (base) { for (i = 0; i < NPROCENT; i++) remove_proc_entry(Entries[i].name, base); remove_proc_entry("jfs", proc_root_fs); } } #endif /* PROC_FS_JFS */ |