mf_proc.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:7k
- /*
- * mf_proc.c
- * Copyright (C) 2001 Kyle A. Lucke IBM Corporation
- *
- * 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
- */
- /* Change Activity: */
- /* End Change Activity */
- #ifndef _MF_PROC_H
- #include <asm/iSeries/mf_proc.h>
- #endif
- #ifndef MF_H_INCLUDED
- #include <asm/iSeries/mf.h>
- #endif
- #include <asm/uaccess.h>
- static struct proc_dir_entry *mf_proc_root = NULL;
- int proc_mf_dump_cmdline
- (char *page, char **start, off_t off, int count, int *eof, void *data);
- int proc_mf_dump_vmlinux
- (char *page, char **start, off_t off, int count, int *eof, void *data);
- int proc_mf_dump_side
- (char *page, char **start, off_t off, int count, int *eof, void *data);
- int proc_mf_change_side
- (struct file *file, const char *buffer, unsigned long count, void *data);
- int proc_mf_dump_src
- (char *page, char **start, off_t off, int count, int *eof, void *data);
- int proc_mf_change_src (struct file *file, const char *buffer, unsigned long count, void *data);
- int proc_mf_change_cmdline(struct file *file, const char *buffer, unsigned long count, void *data);
- int proc_mf_change_vmlinux(struct file *file, const char *buffer, unsigned long count, void *data);
- void mf_proc_init(struct proc_dir_entry *iSeries_proc)
- {
- struct proc_dir_entry *ent = NULL;
- struct proc_dir_entry *mf_a = NULL;
- struct proc_dir_entry *mf_b = NULL;
- struct proc_dir_entry *mf_c = NULL;
- struct proc_dir_entry *mf_d = NULL;
- mf_proc_root = proc_mkdir("mf", iSeries_proc);
- if (!mf_proc_root) return;
- mf_a = proc_mkdir("A", mf_proc_root);
- if (!mf_a) return;
- ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf_a);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)0;
- ent->read_proc = proc_mf_dump_cmdline;
- ent->write_proc = proc_mf_change_cmdline;
- ent = create_proc_entry("vmlinux", S_IFREG|S_IWUSR, mf_a);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)0;
- ent->write_proc = proc_mf_change_vmlinux;
- ent->read_proc = NULL;
- mf_b = proc_mkdir("B", mf_proc_root);
- if (!mf_b) return;
- ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf_b);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)1;
- ent->read_proc = proc_mf_dump_cmdline;
- ent->write_proc = proc_mf_change_cmdline;
- ent = create_proc_entry("vmlinux", S_IFREG|S_IWUSR, mf_b);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)1;
- ent->write_proc = proc_mf_change_vmlinux;
- ent->read_proc = NULL;
- mf_c = proc_mkdir("C", mf_proc_root);
- if (!mf_c) return;
- ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf_c);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)2;
- ent->read_proc = proc_mf_dump_cmdline;
- ent->write_proc = proc_mf_change_cmdline;
- ent = create_proc_entry("vmlinux", S_IFREG|S_IWUSR, mf_c);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)2;
- ent->write_proc = proc_mf_change_vmlinux;
- ent->read_proc = NULL;
- mf_d = proc_mkdir("D", mf_proc_root);
- if (!mf_d) return;
- ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf_d);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)3;
- ent->read_proc = proc_mf_dump_cmdline;
- ent->write_proc = proc_mf_change_cmdline;
- #if 0
- ent = create_proc_entry("vmlinux", S_IFREG|S_IRUSR, mf_d);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)3;
- ent->read_proc = proc_mf_dump_vmlinux;
- ent->write_proc = NULL;
- #endif
- ent = create_proc_entry("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)0;
- ent->read_proc = proc_mf_dump_side;
- ent->write_proc = proc_mf_change_side;
- ent = create_proc_entry("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
- if (!ent) return;
- ent->nlink = 1;
- ent->data = (void *)0;
- ent->read_proc = proc_mf_dump_src;
- ent->write_proc = proc_mf_change_src;
- }
- int proc_mf_dump_cmdline
- (char *page, char **start, off_t off, int count, int *eof, void *data)
- {
- int len = count;
- char *p;
-
- len = mf_getCmdLine(page, &len, (u64)data);
-
- p = page + len - 1;
- while ( p > page ) {
- if ( (*p == 0) || (*p == ' ') )
- --p;
- else
- break;
- }
- if ( *p != 'n' ) {
- ++p;
- *p = 'n';
- }
- ++p;
- *p = 0;
- len = p - page;
-
- len -= off;
- if (len < count) {
- *eof = 1;
- if (len <= 0)
- return 0;
- } else
- len = count;
- *start = page + off;
- return len;
- }
- int proc_mf_dump_vmlinux
- (char *page, char **start, off_t off, int count, int *eof, void *data)
- {
- int sizeToGet = count;
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (mf_getVmlinuxChunk(page, &sizeToGet, off, (u64)data) == 0)
- {
- if (sizeToGet != 0)
- {
- *start = page + off;
- return sizeToGet;
- } else {
- *eof = 1;
- return 0;
- }
- } else {
- *eof = 1;
- return 0;
- }
- }
- int proc_mf_dump_side
- (char *page, char **start, off_t off, int count, int *eof, void *data)
- {
- int len = 0;
- char mf_current_side = mf_getSide();
- len = sprintf(page, "%cn", mf_current_side);
- if (len <= off+count) *eof = 1;
- *start = page + off;
- len -= off;
- if (len>count) len = count;
- if (len<0) len = 0;
- return len;
- }
- int proc_mf_change_side(struct file *file, const char *buffer, unsigned long count, void *data)
- {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if ((*buffer != 'A') &&
- (*buffer != 'B') &&
- (*buffer != 'C') &&
- (*buffer != 'D'))
- {
- printk(KERN_ERR "mf_proc.c: proc_mf_change_side: invalid siden");
- return -EINVAL;
- }
- mf_setSide(*buffer);
- return count;
- }
- int proc_mf_dump_src
- (char *page, char **start, off_t off, int count, int *eof, void *data)
- {
- int len = 0;
- mf_getSrcHistory(page, count);
- len = count;
- len -= off;
- if (len < count) {
- *eof = 1;
- if (len <= 0)
- return 0;
- } else
- len = count;
- *start = page + off;
- return len;
- }
- int proc_mf_change_src(struct file *file, const char *buffer, unsigned long count, void *data)
- {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if ((count < 4) && (count != 1))
- {
- printk(KERN_ERR "mf_proc: invalid srcn");
- return -EINVAL;
- }
- if ((count == 1) && ((*buffer) == ' '))
- {
- mf_clearSrc();
- } else {
- mf_displaySrc(*(u32 *)buffer);
- }
- return count;
- }
- int proc_mf_change_cmdline(struct file *file, const char *buffer, unsigned long count, void *data)
- {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- mf_setCmdLine(buffer, count, (u64)data);
- return count;
- }
- int proc_mf_change_vmlinux(struct file *file, const char *buffer, unsigned long count, void *data)
- {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- mf_setVmlinuxChunk(buffer, count, file->f_pos, (u64)data);
- file->f_pos += count;
- return count;
- }