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/drivers/isdn/capi/capifs.c b/drivers/isdn/capi/capifs.c
new file mode 100644
index 0000000..f8570fd
--- /dev/null
+++ b/drivers/isdn/capi/capifs.c
@@ -0,0 +1,212 @@
+/* $Id: capifs.c,v 1.1.2.3 2004/01/16 21:09:26 keil Exp $
+ *
+ * Copyright 2000 by Carsten Paeth <calle@calle.de>
+ *
+ * Heavily based on devpts filesystem from H. Peter Anvin
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/namei.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+
+MODULE_DESCRIPTION("CAPI4Linux: /dev/capi/ filesystem");
+MODULE_AUTHOR("Carsten Paeth");
+MODULE_LICENSE("GPL");
+
+/* ------------------------------------------------------------------ */
+
+static char *revision = "$Revision: 1.1.2.3 $";
+
+/* ------------------------------------------------------------------ */
+
+#define CAPIFS_SUPER_MAGIC (('C'<<8)|'N')
+
+static struct vfsmount *capifs_mnt;
+static struct dentry *capifs_root;
+
+static struct {
+ int setuid;
+ int setgid;
+ uid_t uid;
+ gid_t gid;
+ umode_t mode;
+} config = {.mode = 0600};
+
+/* ------------------------------------------------------------------ */
+
+static int capifs_remount(struct super_block *s, int *flags, char *data)
+{
+ int setuid = 0;
+ int setgid = 0;
+ uid_t uid = 0;
+ gid_t gid = 0;
+ umode_t mode = 0600;
+ char *this_char;
+
+ this_char = NULL;
+ while ((this_char = strsep(&data, ",")) != NULL) {
+ int n;
+ char dummy;
+ if (!*this_char)
+ continue;
+ if (sscanf(this_char, "uid=%i%c", &n, &dummy) == 1) {
+ setuid = 1;
+ uid = n;
+ } else if (sscanf(this_char, "gid=%i%c", &n, &dummy) == 1) {
+ setgid = 1;
+ gid = n;
+ } else if (sscanf(this_char, "mode=%o%c", &n, &dummy) == 1)
+ mode = n & ~S_IFMT;
+ else {
+ printk("capifs: called with bogus options\n");
+ return -EINVAL;
+ }
+ }
+ config.setuid = setuid;
+ config.setgid = setgid;
+ config.uid = uid;
+ config.gid = gid;
+ config.mode = mode;
+ return 0;
+}
+
+static struct super_operations capifs_sops =
+{
+ .statfs = simple_statfs,
+ .remount_fs = capifs_remount,
+};
+
+
+static int
+capifs_fill_super(struct super_block *s, void *data, int silent)
+{
+ struct inode * inode;
+
+ s->s_blocksize = 1024;
+ s->s_blocksize_bits = 10;
+ s->s_magic = CAPIFS_SUPER_MAGIC;
+ s->s_op = &capifs_sops;
+ s->s_time_gran = 1;
+
+ inode = new_inode(s);
+ if (!inode)
+ goto fail;
+ inode->i_ino = 1;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ inode->i_blocks = 0;
+ inode->i_blksize = 1024;
+ inode->i_uid = inode->i_gid = 0;
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
+ inode->i_op = &simple_dir_inode_operations;
+ inode->i_fop = &simple_dir_operations;
+ inode->i_nlink = 2;
+
+ capifs_root = s->s_root = d_alloc_root(inode);
+ if (s->s_root)
+ return 0;
+
+ printk("capifs: get root dentry failed\n");
+ iput(inode);
+fail:
+ return -ENOMEM;
+}
+
+static struct super_block *capifs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
+{
+ return get_sb_single(fs_type, flags, data, capifs_fill_super);
+}
+
+static struct file_system_type capifs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "capifs",
+ .get_sb = capifs_get_sb,
+ .kill_sb = kill_anon_super,
+};
+
+static struct dentry *get_node(int num)
+{
+ char s[10];
+ struct dentry *root = capifs_root;
+ down(&root->d_inode->i_sem);
+ return lookup_one_len(s, root, sprintf(s, "%d", num));
+}
+
+void capifs_new_ncci(unsigned int number, dev_t device)
+{
+ struct dentry *dentry;
+ struct inode *inode = new_inode(capifs_mnt->mnt_sb);
+ if (!inode)
+ return;
+ inode->i_ino = number+2;
+ inode->i_blksize = 1024;
+ inode->i_uid = config.setuid ? config.uid : current->fsuid;
+ inode->i_gid = config.setgid ? config.gid : current->fsgid;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ init_special_inode(inode, S_IFCHR|config.mode, device);
+ //inode->i_op = &capifs_file_inode_operations;
+
+ dentry = get_node(number);
+ if (!IS_ERR(dentry) && !dentry->d_inode)
+ d_instantiate(dentry, inode);
+ up(&capifs_root->d_inode->i_sem);
+}
+
+void capifs_free_ncci(unsigned int number)
+{
+ struct dentry *dentry = get_node(number);
+
+ if (!IS_ERR(dentry)) {
+ struct inode *inode = dentry->d_inode;
+ if (inode) {
+ inode->i_nlink--;
+ d_delete(dentry);
+ dput(dentry);
+ }
+ dput(dentry);
+ }
+ up(&capifs_root->d_inode->i_sem);
+}
+
+static int __init capifs_init(void)
+{
+ char rev[32];
+ char *p;
+ int err;
+
+ if ((p = strchr(revision, ':')) != 0 && p[1]) {
+ strlcpy(rev, p + 2, sizeof(rev));
+ if ((p = strchr(rev, '$')) != 0 && p > rev)
+ *(p-1) = 0;
+ } else
+ strcpy(rev, "1.0");
+
+ err = register_filesystem(&capifs_fs_type);
+ if (!err) {
+ capifs_mnt = kern_mount(&capifs_fs_type);
+ if (IS_ERR(capifs_mnt))
+ err = PTR_ERR(capifs_mnt);
+ }
+ if (!err)
+ printk(KERN_NOTICE "capifs: Rev %s\n", rev);
+ return err;
+}
+
+static void __exit capifs_exit(void)
+{
+ unregister_filesystem(&capifs_fs_type);
+ mntput(capifs_mnt);
+}
+
+EXPORT_SYMBOL(capifs_new_ncci);
+EXPORT_SYMBOL(capifs_free_ncci);
+
+module_init(capifs_init);
+module_exit(capifs_exit);