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authorMartin Whitaker <mageia@martin-whitaker.me.uk>2017-12-18 10:54:01 +0000
committerMartin Whitaker <mageia@martin-whitaker.me.uk>2017-12-18 10:54:01 +0000
commit296dc5bb53c430c8842ab7327d8a76b5750c64b4 (patch)
tree5670e983d5d459466dac2b7a49b7ce14827c7e9d /kmod
parent7e53518a7d8709998482eef1e9da21ee1a1886a9 (diff)
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Start creating a new set of tools for generating Mageia ISO images.
The aim is to share as much code as possible between the tool used to generate the Live ISOs and the tool used to generate the classic installer ISOs. This is derived from the user/martinw/use-grub2 branch of draklive.
Diffstat (limited to 'kmod')
-rw-r--r--kmod/readlog.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/kmod/readlog.c b/kmod/readlog.c
deleted file mode 100644
index 8a1c5ad..0000000
--- a/kmod/readlog.c
+++ /dev/null
@@ -1,230 +0,0 @@
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/syscalls.h>
-#include <linux/time.h>
-
-#include <asm/unistd.h>
-
-#include <asm/current.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Olivier Blin <blino@mandriva.com>");
-
-struct opened_file {
- struct list_head s_list;
- char *name;
-};
-
-unsigned long **sys_call_table;
-static struct dentry *dbg_dir;
-static struct dentry *dbg_file;
-struct opened_file bp;
-DECLARE_MUTEX(files_mutex);
-
-ssize_t (*read)(int f, const void *buf, size_t n);
-long (*open)(const char __user *filename, int flags, int mode);
-
-static void *profile_seq_start(struct seq_file *file, loff_t *pos)
-{
- struct list_head *p;
- loff_t l = *pos;
- down(&files_mutex);
- list_for_each(p, &bp.s_list)
- if (!l--)
- return list_entry(p, struct opened_file, s_list);
- return NULL;
-}
-
-static void *profile_seq_next(struct seq_file *file, void *v, loff_t *pos)
-{
- struct list_head *p = ((struct opened_file *)v)->s_list.next;
- (*pos)++;
- return p == &bp.s_list ? NULL : list_entry(p, struct opened_file, s_list);
-}
-
-static void profile_seq_stop(struct seq_file *file, void *v)
-{
- up(&files_mutex);
-}
-
-static int profile_seq_show(struct seq_file *file, void *v)
-{
- seq_printf(file, ((struct opened_file *)v)->name);
- seq_putc(file, '\n');
- return 0;
-}
-
-static struct seq_operations profile_seq_ops = {
- .start = profile_seq_start,
- .next = profile_seq_next,
- .stop = profile_seq_stop,
- .show = profile_seq_show,
-};
-
-static int profile_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &profile_seq_ops);
-}
-
-static struct file_operations profile_fops = {
- .owner = THIS_MODULE,
- .open = profile_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
-
-/* Borrowed from
- * http://downloads.securityfocus.com/downloads/scprint.tar.gz
- * http://www.gnome.org/~lcolitti/gnome-startup/linux-iolog/readlog.c
- * http://kerneltrap.org/node/5793
- */
-unsigned long **find_sys_call_table(void) {
- unsigned long *p;
-
- for (p = (unsigned long *)((init_mm.end_code + 4) & 0xfffffffc);
- p < (unsigned long *)init_mm.end_data; p++) {
- if (p[__NR_close] == (unsigned long) sys_close){
- return (unsigned long **) p;
- }
- }
-
- return NULL;
-}
-
-void addfilename(const char *filename) {
- struct opened_file *f;
-
- f = kmalloc(sizeof(struct opened_file), GFP_KERNEL);
- if (f == NULL)
- return;
-
- f->name = kmalloc(strlen(filename) + 1, GFP_KERNEL);
- if (f->name == NULL)
- return;
- strcpy(f->name, filename);
-
- INIT_LIST_HEAD(&f->s_list);
-
- printk(KERN_INFO "locking while adding: %s\n", filename);
-
- down(&files_mutex);
- list_add_tail(&f->s_list, &bp.s_list);
- up(&files_mutex);
-
- printk(KERN_INFO "unlocking after adding: %s\n", filename);
-}
-
-long loggingopen(const char __user *filename, int flags, int mode) {
- struct file *f = NULL;
- long fd;
-
- fd = open(filename, flags, mode);
-
- printk(KERN_INFO "opening fd %ld for %s\n", fd, filename);
-
- if(fd > 0 && current) {
- f = current->files->fd_array[fd];
- if(f && f->f_dentry && f->f_vfsmnt) {
- char tmpname[PATH_MAX];
- char *name = d_path(f->f_dentry, f->f_vfsmnt, tmpname, sizeof(tmpname) - 1);
- if (name)
- addfilename(name);
- }
- }
-
- return fd;
-}
-
-
-ssize_t loggingread(int fd, const void *buf, size_t n) {
- struct file *f = NULL;
- char *name = NULL;
- loff_t offset = 0;
- struct timeval tv;
- char tmpname[256];
-
- do_gettimeofday(&tv);
-
- if(current)
- f = current->files->fd_array[fd];
-
- printk(KERN_DEBUG "READ: f: %p\n", f);
-
-
- if(f)
- offset = f->f_pos;
-
- if (f)
- printk(KERN_DEBUG "READ: d_entry: %p, vfsmnt: %p\n", f->f_dentry, f->f_vfsmnt);
-
- if(f && f->f_dentry && f->f_vfsmnt) {
- printk(KERN_DEBUG "READ: d_path\n");
- name = d_path(f->f_dentry, f->f_vfsmnt, tmpname, sizeof(tmpname) - 1);
- if (name)
- addfilename(name);
- }
-
- printk(KERN_DEBUG "READ: %lu.%lu (%s/%d) %Lu %s\n",
- tv.tv_sec, tv.tv_usec,
- current ? current->comm : "?",
- current ? current->pid : 0,
- offset,
- name ? name : "<no dentry>"
- );
-
- return read(fd, buf, n);
-}
-
-static int __init readlog_init(void) {
- sys_call_table = find_sys_call_table();
- /* compare with grep sys_call_table /boot/System.map */
- printk(KERN_INFO "Found sys_call_table at %p\n", sys_call_table);
-
- open = (void *) (sys_call_table[__NR_open]);
- sys_call_table[__NR_open] = (void *) loggingopen;
-
- read = (void *) (sys_call_table[__NR_read]);
- /* sys_call_table[__NR_read] = (void *) loggingread; */
-
- dbg_dir = debugfs_create_dir("dmc", NULL);
- if (IS_ERR(dbg_dir)) {
- printk(KERN_NOTICE ": debugfs is not available\n");
- return -ENODEV;
- }
- if (dbg_dir == NULL) {
- printk(KERN_NOTICE ": unable to create usbmon directory\n");
- return -ENODEV;
- }
-
- dbg_file = debugfs_create_file("bp", 0600, dbg_dir, NULL, &profile_fops);
- if (dbg_file == NULL) {
- debugfs_remove(dbg_dir);
- return -ENODEV;
- }
-
- INIT_LIST_HEAD(&bp.s_list);
-
- return 0;
-}
-
-static void __exit readlog_exit(void) {
- debugfs_remove(dbg_file);
- debugfs_remove(dbg_dir);
-
- sys_call_table[__NR_open] = (void *) open;
- sys_call_table[__NR_read] = (void *) read;
-
- printk(KERN_INFO "sys_call_table restored\n");
-
-}
-
-module_init(readlog_init);
-module_exit(readlog_exit);