Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 432 insertions, 0 deletions

diff --git a/net/atm/resources.c b/net/atm/resources.c
new file mode 100644
index 000000000000..33f1685dbb77
--- /dev/null
+++ b/net/atm/resources.c
@@ -0,0 +1,432 @@
+/* net/atm/resources.c - Statically allocated resources */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+/* Fixes
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * 2002/01 - don't free the whole struct sock on sk->destruct time,
+ *           use the default destruct function initialized by sock_init_data */
+
+
+#include <linux/config.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/atmdev.h>
+#include <linux/sonet.h>
+#include <linux/kernel.h> /* for barrier */
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <net/sock.h>    /* for struct sock */
+
+#include "common.h"
+#include "resources.h"
+#include "addr.h"
+
+
+LIST_HEAD(atm_devs);
+DEFINE_SPINLOCK(atm_dev_lock);
+
+static struct atm_dev *__alloc_atm_dev(const char *type)
+{
+        struct atm_dev *dev;
+
+        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        if (!dev)
+                return NULL;
+        memset(dev, 0, sizeof(*dev));
+        dev->type = type;
+        dev->signal = ATM_PHY_SIG_UNKNOWN;
+        dev->link_rate = ATM_OC3_PCR;
+        spin_lock_init(&dev->lock);
+        INIT_LIST_HEAD(&dev->local);
+
+        return dev;
+}
+
+static void __free_atm_dev(struct atm_dev *dev)
+{
+        kfree(dev);
+}
+
+static struct atm_dev *__atm_dev_lookup(int number)
+{
+        struct atm_dev *dev;
+        struct list_head *p;
+
+        list_for_each(p, &atm_devs) {
+                dev = list_entry(p, struct atm_dev, dev_list);
+                if ((dev->ops) && (dev->number == number)) {
+                        atm_dev_hold(dev);
+                        return dev;
+                }
+        }
+        return NULL;
+}
+
+struct atm_dev *atm_dev_lookup(int number)
+{
+        struct atm_dev *dev;
+
+        spin_lock(&atm_dev_lock);
+        dev = __atm_dev_lookup(number);
+        spin_unlock(&atm_dev_lock);
+        return dev;
+}
+
+struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
+                                 int number, unsigned long *flags)
+{
+        struct atm_dev *dev, *inuse;
+
+        dev = __alloc_atm_dev(type);
+        if (!dev) {
+                printk(KERN_ERR "atm_dev_register: no space for dev %s\n",
+                    type);
+                return NULL;
+        }
+        spin_lock(&atm_dev_lock);
+        if (number != -1) {
+                if ((inuse = __atm_dev_lookup(number))) {
+                        atm_dev_put(inuse);
+                        spin_unlock(&atm_dev_lock);
+                        __free_atm_dev(dev);
+                        return NULL;
+                }
+                dev->number = number;
+        } else {
+                dev->number = 0;
+                while ((inuse = __atm_dev_lookup(dev->number))) {
+                        atm_dev_put(inuse);
+                        dev->number++;
+                }
+        }
+
+        dev->ops = ops;
+        if (flags)
+                dev->flags = *flags;
+        else
+                memset(&dev->flags, 0, sizeof(dev->flags));
+        memset(&dev->stats, 0, sizeof(dev->stats));
+        atomic_set(&dev->refcnt, 1);
+        list_add_tail(&dev->dev_list, &atm_devs);
+        spin_unlock(&atm_dev_lock);
+
+        if (atm_proc_dev_register(dev) < 0) {
+                printk(KERN_ERR "atm_dev_register: "
+                       "atm_proc_dev_register failed for dev %s\n",
+                       type);
+                spin_lock(&atm_dev_lock);
+                list_del(&dev->dev_list);
+                spin_unlock(&atm_dev_lock);
+                __free_atm_dev(dev);
+                return NULL;
+        }
+
+        return dev;
+}
+
+
+void atm_dev_deregister(struct atm_dev *dev)
+{
+        unsigned long warning_time;
+
+        atm_proc_dev_deregister(dev);
+
+        spin_lock(&atm_dev_lock);
+        list_del(&dev->dev_list);
+        spin_unlock(&atm_dev_lock);
+
+        warning_time = jiffies;
+        while (atomic_read(&dev->refcnt) != 1) {
+                msleep(250);
+                if ((jiffies - warning_time) > 10 * HZ) {
+                        printk(KERN_EMERG "atm_dev_deregister: waiting for "
+                               "dev %d to become free. Usage count = %d\n",
+                               dev->number, atomic_read(&dev->refcnt));
+                        warning_time = jiffies;
+                }
+        }
+
+        __free_atm_dev(dev);
+}
+
+void shutdown_atm_dev(struct atm_dev *dev)
+{
+        if (atomic_read(&dev->refcnt) > 1) {
+                set_bit(ATM_DF_CLOSE, &dev->flags);
+                return;
+        }
+        if (dev->ops->dev_close)
+                dev->ops->dev_close(dev);
+        atm_dev_deregister(dev);
+}
+
+
+static void copy_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+        __AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+static void subtract_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
+        __AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg, int zero)
+{
+        struct atm_dev_stats tmp;
+        int error = 0;
+
+        copy_aal_stats(&dev->stats.aal0, &tmp.aal0);
+        copy_aal_stats(&dev->stats.aal34, &tmp.aal34);
+        copy_aal_stats(&dev->stats.aal5, &tmp.aal5);
+        if (arg)
+                error = copy_to_user(arg, &tmp, sizeof(tmp));
+        if (zero && !error) {
+                subtract_aal_stats(&dev->stats.aal0, &tmp.aal0);
+                subtract_aal_stats(&dev->stats.aal34, &tmp.aal34);
+                subtract_aal_stats(&dev->stats.aal5, &tmp.aal5);
+        }
+        return error ? -EFAULT : 0;
+}
+
+
+int atm_dev_ioctl(unsigned int cmd, void __user *arg)
+{
+        void __user *buf;
+        int error, len, number, size = 0;
+        struct atm_dev *dev;
+        struct list_head *p;
+        int *tmp_buf, *tmp_p;
+        struct atm_iobuf __user *iobuf = arg;
+        struct atmif_sioc __user *sioc = arg;
+        switch (cmd) {
+                case ATM_GETNAMES:
+                        if (get_user(buf, &iobuf->buffer))
+                                return -EFAULT;
+                        if (get_user(len, &iobuf->length))
+                                return -EFAULT;
+                        spin_lock(&atm_dev_lock);
+                        list_for_each(p, &atm_devs)
+                                size += sizeof(int);
+                        if (size > len) {
+                                spin_unlock(&atm_dev_lock);
+                                return -E2BIG;
+                        }
+                        tmp_buf = kmalloc(size, GFP_ATOMIC);
+                        if (!tmp_buf) {
+                                spin_unlock(&atm_dev_lock);
+                                return -ENOMEM;
+                        }
+                        tmp_p = tmp_buf;
+                        list_for_each(p, &atm_devs) {
+                                dev = list_entry(p, struct atm_dev, dev_list);
+                                *tmp_p++ = dev->number;
+                        }
+                        spin_unlock(&atm_dev_lock);
+                        error = ((copy_to_user(buf, tmp_buf, size)) ||
+                                        put_user(size, &iobuf->length))
+                                                ? -EFAULT : 0;
+                        kfree(tmp_buf);
+                        return error;
+                default:
+                        break;
+        }
+
+        if (get_user(buf, &sioc->arg))
+                return -EFAULT;
+        if (get_user(len, &sioc->length))
+                return -EFAULT;
+        if (get_user(number, &sioc->number))
+                return -EFAULT;
+
+        if (!(dev = atm_dev_lookup(number)))
+                return -ENODEV;
+        
+        switch (cmd) {
+                case ATM_GETTYPE:
+                        size = strlen(dev->type) + 1;
+                        if (copy_to_user(buf, dev->type, size)) {
+                                error = -EFAULT;
+                                goto done;
+                        }
+                        break;
+                case ATM_GETESI:
+                        size = ESI_LEN;
+                        if (copy_to_user(buf, dev->esi, size)) {
+                                error = -EFAULT;
+                                goto done;
+                        }
+                        break;
+                case ATM_SETESI:
+                        {
+                                int i;
+
+                                for (i = 0; i < ESI_LEN; i++)
+                                        if (dev->esi[i]) {
+                                                error = -EEXIST;
+                                                goto done;
+                                        }
+                        }
+                        /* fall through */
+                case ATM_SETESIF:
+                        {
+                                unsigned char esi[ESI_LEN];
+
+                                if (!capable(CAP_NET_ADMIN)) {
+                                        error = -EPERM;
+                                        goto done;
+                                }
+                                if (copy_from_user(esi, buf, ESI_LEN)) {
+                                        error = -EFAULT;
+                                        goto done;
+                                }
+                                memcpy(dev->esi, esi, ESI_LEN);
+                                error =  ESI_LEN;
+                                goto done;
+                        }
+                case ATM_GETSTATZ:
+                        if (!capable(CAP_NET_ADMIN)) {
+                                error = -EPERM;
+                                goto done;
+                        }
+                        /* fall through */
+                case ATM_GETSTAT:
+                        size = sizeof(struct atm_dev_stats);
+                        error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
+                        if (error)
+                                goto done;
+                        break;
+                case ATM_GETCIRANGE:
+                        size = sizeof(struct atm_cirange);
+                        if (copy_to_user(buf, &dev->ci_range, size)) {
+                                error = -EFAULT;
+                                goto done;
+                        }
+                        break;
+                case ATM_GETLINKRATE:
+                        size = sizeof(int);
+                        if (copy_to_user(buf, &dev->link_rate, size)) {
+                                error = -EFAULT;
+                                goto done;
+                        }
+                        break;
+                case ATM_RSTADDR:
+                        if (!capable(CAP_NET_ADMIN)) {
+                                error = -EPERM;
+                                goto done;
+                        }
+                        atm_reset_addr(dev);
+                        break;
+                case ATM_ADDADDR:
+                case ATM_DELADDR:
+                        if (!capable(CAP_NET_ADMIN)) {
+                                error = -EPERM;
+                                goto done;
+                        }
+                        {
+                                struct sockaddr_atmsvc addr;
+
+                                if (copy_from_user(&addr, buf, sizeof(addr))) {
+                                        error = -EFAULT;
+                                        goto done;
+                                }
+                                if (cmd == ATM_ADDADDR)
+                                        error = atm_add_addr(dev, &addr);
+                                else
+                                        error = atm_del_addr(dev, &addr);
+                                goto done;
+                        }
+                case ATM_GETADDR:
+                        error = atm_get_addr(dev, buf, len);
+                        if (error < 0)
+                                goto done;
+                        size = error;
+                        /* may return 0, but later on size == 0 means "don't
+                           write the length" */
+                        error = put_user(size, &sioc->length)
+                                ? -EFAULT : 0;
+                        goto done;
+                case ATM_SETLOOP:
+                        if (__ATM_LM_XTRMT((int) (unsigned long) buf) &&
+                            __ATM_LM_XTLOC((int) (unsigned long) buf) >
+                            __ATM_LM_XTRMT((int) (unsigned long) buf)) {
+                                error = -EINVAL;
+                                goto done;
+                        }
+                        /* fall through */
+                case ATM_SETCIRANGE:
+                case SONET_GETSTATZ:
+                case SONET_SETDIAG:
+                case SONET_CLRDIAG:
+                case SONET_SETFRAMING:
+                        if (!capable(CAP_NET_ADMIN)) {
+                                error = -EPERM;
+                                goto done;
+                        }
+                        /* fall through */
+                default:
+                        if (!dev->ops->ioctl) {
+                                error = -EINVAL;
+                                goto done;
+                        }
+                        size = dev->ops->ioctl(dev, cmd, buf);
+                        if (size < 0) {
+                                error = (size == -ENOIOCTLCMD ? -EINVAL : size);
+                                goto done;
+                        }
+        }
+        
+        if (size)
+                error = put_user(size, &sioc->length)
+                        ? -EFAULT : 0;
+        else
+                error = 0;
+done:
+        atm_dev_put(dev);
+        return error;
+}
+
+static __inline__ void *dev_get_idx(loff_t left)
+{
+        struct list_head *p;
+
+        list_for_each(p, &atm_devs) {
+                if (!--left)
+                        break;
+        }
+        return (p != &atm_devs) ? p : NULL;
+}
+
+void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+        spin_lock(&atm_dev_lock);
+        return *pos ? dev_get_idx(*pos) : (void *) 1;
+}
+
+void atm_dev_seq_stop(struct seq_file *seq, void *v)
+{
+        spin_unlock(&atm_dev_lock);
+}
+ 
+void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        ++*pos;
+        v = (v == (void *)1) ? atm_devs.next : ((struct list_head *)v)->next;
+        return (v == &atm_devs) ? NULL : v;
+}
+
+
+EXPORT_SYMBOL(atm_dev_register);
+EXPORT_SYMBOL(atm_dev_deregister);
+EXPORT_SYMBOL(atm_dev_lookup);
+EXPORT_SYMBOL(shutdown_atm_dev);