Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/jffs/jffs_proc.c b/fs/jffs/jffs_proc.c
new file mode 100644
index 0000000..9bdd99a
--- /dev/null
+++ b/fs/jffs/jffs_proc.c
@@ -0,0 +1,261 @@
+/*
+ * JFFS -- Journaling Flash File System, Linux implementation.
+ *
+ * Copyright (C) 2000 Axis Communications AB.
+ *
+ * Created by Simon Kagstrom <simonk@axis.com>.
+ *
+ * $Id: jffs_proc.c,v 1.5 2001/06/02 14:34:55 dwmw2 Exp $
+ *
+ * This 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.
+ *
+ * Overview:
+ * This file defines JFFS partition entries in the proc file system.
+ *
+ * TODO:
+ * Create some more proc files for different kinds of info, i.e. statistics
+ * about written and read bytes, number of calls to different routines,
+ * reports about failures.
+ */
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/jffs.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include "jffs_fm.h"
+#include "jffs_proc.h"
+
+/*
+ * Structure for a JFFS partition in the system
+ */
+struct jffs_partition_dir {
+ struct jffs_control *c;
+ struct proc_dir_entry *part_root;
+ struct proc_dir_entry *part_info;
+ struct proc_dir_entry *part_layout;
+ struct jffs_partition_dir *next;
+};
+
+/*
+ * Structure for top-level entry in '/proc/fs' directory
+ */
+struct proc_dir_entry *jffs_proc_root;
+
+/*
+ * Linked list of 'jffs_partition_dirs' to help us track
+ * the mounted JFFS partitions in the system
+ */
+static struct jffs_partition_dir *jffs_part_dirs;
+
+/*
+ * Read functions for entries
+ */
+static int jffs_proc_info_read(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+static int jffs_proc_layout_read (char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+
+
+/*
+ * Register a JFFS partition directory (called upon mount)
+ */
+int jffs_register_jffs_proc_dir(int mtd, struct jffs_control *c)
+{
+ struct jffs_partition_dir *part_dir;
+ struct proc_dir_entry *part_info = NULL;
+ struct proc_dir_entry *part_layout = NULL;
+ struct proc_dir_entry *part_root = NULL;
+ char name[10];
+
+ sprintf(name, "%d", mtd);
+ /* Allocate structure for local JFFS partition table */
+ part_dir = (struct jffs_partition_dir *)
+ kmalloc(sizeof (struct jffs_partition_dir), GFP_KERNEL);
+ if (!part_dir)
+ goto out;
+
+ /* Create entry for this partition */
+ part_root = proc_mkdir(name, jffs_proc_root);
+ if (!part_root)
+ goto out1;
+
+ /* Create entry for 'info' file */
+ part_info = create_proc_entry ("info", 0, part_root);
+ if (!part_info)
+ goto out2;
+ part_info->read_proc = jffs_proc_info_read;
+ part_info->data = (void *) c;
+
+ /* Create entry for 'layout' file */
+ part_layout = create_proc_entry ("layout", 0, part_root);
+ if (!part_layout)
+ goto out3;
+ part_layout->read_proc = jffs_proc_layout_read;
+ part_layout->data = (void *) c;
+
+ /* Fill in structure for table and insert in the list */
+ part_dir->c = c;
+ part_dir->part_root = part_root;
+ part_dir->part_info = part_info;
+ part_dir->part_layout = part_layout;
+ part_dir->next = jffs_part_dirs;
+ jffs_part_dirs = part_dir;
+
+ /* Return happy */
+ return 0;
+
+out3:
+ remove_proc_entry("info", part_root);
+out2:
+ remove_proc_entry(name, jffs_proc_root);
+out1:
+ kfree(part_dir);
+out:
+ return -ENOMEM;
+}
+
+
+/*
+ * Unregister a JFFS partition directory (called at umount)
+ */
+int jffs_unregister_jffs_proc_dir(struct jffs_control *c)
+{
+ struct jffs_partition_dir *part_dir = jffs_part_dirs;
+ struct jffs_partition_dir *prev_part_dir = NULL;
+
+ while (part_dir) {
+ if (part_dir->c == c) {
+ /* Remove entries for partition */
+ remove_proc_entry (part_dir->part_info->name,
+ part_dir->part_root);
+ remove_proc_entry (part_dir->part_layout->name,
+ part_dir->part_root);
+ remove_proc_entry (part_dir->part_root->name,
+ jffs_proc_root);
+
+ /* Remove entry from list */
+ if (prev_part_dir)
+ prev_part_dir->next = part_dir->next;
+ else
+ jffs_part_dirs = part_dir->next;
+
+ /*
+ * Check to see if this is the last one
+ * and remove the entry from '/proc/fs'
+ * if it is.
+ */
+ if (jffs_part_dirs == part_dir->next)
+ remove_proc_entry ("jffs", proc_root_fs);
+
+ /* Free memory for entry */
+ kfree(part_dir);
+
+ /* Return happy */
+ return 0;
+ }
+
+ /* Move to next entry */
+ prev_part_dir = part_dir;
+ part_dir = part_dir->next;
+ }
+
+ /* Return unhappy */
+ return -1;
+}
+
+
+/*
+ * Read a JFFS partition's `info' file
+ */
+static int jffs_proc_info_read (char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct jffs_control *c = (struct jffs_control *) data;
+ int len = 0;
+
+ /* Get information on the parition */
+ len += sprintf (page,
+ "partition size: %08lX (%u)\n"
+ "sector size: %08lX (%u)\n"
+ "used size: %08lX (%u)\n"
+ "dirty size: %08lX (%u)\n"
+ "free size: %08lX (%u)\n\n",
+ (unsigned long) c->fmc->flash_size, c->fmc->flash_size,
+ (unsigned long) c->fmc->sector_size, c->fmc->sector_size,
+ (unsigned long) c->fmc->used_size, c->fmc->used_size,
+ (unsigned long) c->fmc->dirty_size, c->fmc->dirty_size,
+ (unsigned long) (c->fmc->flash_size -
+ (c->fmc->used_size + c->fmc->dirty_size)),
+ c->fmc->flash_size - (c->fmc->used_size + c->fmc->dirty_size));
+
+ /* We're done */
+ *eof = 1;
+
+ /* Return length */
+ return len;
+}
+
+
+/*
+ * Read a JFFS partition's `layout' file
+ */
+static int jffs_proc_layout_read (char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct jffs_control *c = (struct jffs_control *) data;
+ struct jffs_fm *fm = NULL;
+ struct jffs_fm *last_fm = NULL;
+ int len = 0;
+
+ /* Get the first item in the list */
+ fm = c->fmc->head;
+
+ /* Print free space */
+ if (fm && fm->offset) {
+ len += sprintf (page, "00000000 %08lX free\n",
+ (unsigned long) fm->offset);
+ }
+
+ /* Loop through all of the flash control structures */
+ while (fm && (len < (off + count))) {
+ if (fm->nodes) {
+ len += sprintf (page + len,
+ "%08lX %08lX ino=%08lX, ver=%08lX\n",
+ (unsigned long) fm->offset,
+ (unsigned long) fm->size,
+ (unsigned long) fm->nodes->node->ino,
+ (unsigned long) fm->nodes->node->version);
+ }
+ else {
+ len += sprintf (page + len,
+ "%08lX %08lX dirty\n",
+ (unsigned long) fm->offset,
+ (unsigned long) fm->size);
+ }
+ last_fm = fm;
+ fm = fm->next;
+ }
+
+ /* Print free space */
+ if ((len < (off + count)) && last_fm
+ && (last_fm->offset < c->fmc->flash_size)) {
+ len += sprintf (page + len,
+ "%08lX %08lX free\n",
+ (unsigned long) last_fm->offset +
+ last_fm->size,
+ (unsigned long) (c->fmc->flash_size -
+ (last_fm->offset + last_fm->size)));
+ }
+
+ /* We're done */
+ *eof = 1;
+
+ /* Return length */
+ return len;
+}