patch-2.4.19 linux-2.4.19/arch/ppc64/kernel/mf_proc.c

• Lines: 298
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/ppc64/kernel/mf_proc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ppc64/kernel/mf_proc.c linux-2.4.19/arch/ppc64/kernel/mf_proc.c
@@ -0,0 +1,297 @@
+/*
+ * 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, "%c\n", 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 side\n");
+		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 src\n");
+		return -EINVAL;
+	}
+
+	if ((count == 1) && ((*buffer) == '\0'))
+	{
+		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;			
+}