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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-11 19:40:14 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-11 19:40:14 -0700
commit038a5008b2f395c85e6e71d6ddf3c684e7c405b0 (patch)
tree4735eab577e97e5a22c3141e3f60071c8065585e /fs
parentdd6d1844af33acb4edd0a40b1770d091a22c94be (diff)
parent266918303226cceac7eca38ced30f15f277bd89c (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (867 commits) [SKY2]: status polling loop (post merge) [NET]: Fix NAPI completion handling in some drivers. [TCP]: Limit processing lost_retrans loop to work-to-do cases [TCP]: Fix lost_retrans loop vs fastpath problems [TCP]: No need to re-count fackets_out/sacked_out at RTO [TCP]: Extract tcp_match_queue_to_sack from sacktag code [TCP]: Kill almost unused variable pcount from sacktag [TCP]: Fix mark_head_lost to ignore R-bit when trying to mark L [TCP]: Add bytes_acked (ABC) clearing to FRTO too [IPv6]: Update setsockopt(IPV6_MULTICAST_IF) to support RFC 3493, try2 [NETFILTER]: x_tables: add missing ip6t_modulename aliases [NETFILTER]: nf_conntrack_tcp: fix connection reopening [QETH]: fix qeth_main.c [NETLINK]: fib_frontend build fixes [IPv6]: Export userland ND options through netlink (RDNSS support) [9P]: build fix with !CONFIG_SYSCTL [NET]: Fix dev_put() and dev_hold() comments [NET]: make netlink user -> kernel interface synchronious [NET]: unify netlink kernel socket recognition [NET]: cleanup 3rd argument in netlink_sendskb ... Fix up conflicts manually in Documentation/feature-removal-schedule.txt and my new least favourite crap, the "mod_devicetable" support in the files include/linux/mod_devicetable.h and scripts/mod/file2alias.c. (The latter files seem to be explicitly _designed_ to get conflicts when different subsystems work with them - that have an absolutely horrid lack of subsystem separation!) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/afs/netdevices.c5
-rw-r--r--fs/compat_ioctl.c21
-rw-r--r--fs/ecryptfs/netlink.c16
-rw-r--r--fs/proc/Makefile1
-rw-r--r--fs/proc/internal.h5
-rw-r--r--fs/proc/proc_net.c200
-rw-r--r--fs/proc/root.c8
-rw-r--r--fs/seq_file.c33
8 files changed, 257 insertions, 32 deletions
diff --git a/fs/afs/netdevices.c b/fs/afs/netdevices.c
index fc27d4b52e5..49f18942306 100644
--- a/fs/afs/netdevices.c
+++ b/fs/afs/netdevices.c
@@ -8,6 +8,7 @@
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
+#include <net/net_namespace.h>
#include "internal.h"
/*
@@ -23,7 +24,7 @@ int afs_get_MAC_address(u8 *mac, size_t maclen)
BUG();
rtnl_lock();
- dev = __dev_getfirstbyhwtype(ARPHRD_ETHER);
+ dev = __dev_getfirstbyhwtype(&init_net, ARPHRD_ETHER);
if (dev) {
memcpy(mac, dev->dev_addr, maclen);
ret = 0;
@@ -47,7 +48,7 @@ int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs,
ASSERT(maxbufs > 0);
rtnl_lock();
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
if (dev->type == ARPHRD_LOOPBACK && !wantloopback)
continue;
idev = __in_dev_get_rtnl(dev);
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index b9e3357bcc2..9c3fd07f35e 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -319,22 +319,21 @@ struct ifconf32 {
static int dev_ifname32(unsigned int fd, unsigned int cmd, unsigned long arg)
{
- struct net_device *dev;
- struct ifreq32 ifr32;
+ struct ifreq __user *uifr;
int err;
- if (copy_from_user(&ifr32, compat_ptr(arg), sizeof(ifr32)))
+ uifr = compat_alloc_user_space(sizeof(struct ifreq));
+ if (copy_in_user(uifr, compat_ptr(arg), sizeof(struct ifreq32)));
return -EFAULT;
- dev = dev_get_by_index(ifr32.ifr_ifindex);
- if (!dev)
- return -ENODEV;
+ err = sys_ioctl(fd, SIOCGIFNAME, (unsigned long)uifr);
+ if (err)
+ return err;
- strlcpy(ifr32.ifr_name, dev->name, sizeof(ifr32.ifr_name));
- dev_put(dev);
-
- err = copy_to_user(compat_ptr(arg), &ifr32, sizeof(ifr32));
- return (err ? -EFAULT : 0);
+ if (copy_in_user(compat_ptr(arg), uifr, sizeof(struct ifreq32)))
+ return -EFAULT;
+
+ return 0;
}
static int dev_ifconf(unsigned int fd, unsigned int cmd, unsigned long arg)
diff --git a/fs/ecryptfs/netlink.c b/fs/ecryptfs/netlink.c
index fe9186312d7..9aa345121e0 100644
--- a/fs/ecryptfs/netlink.c
+++ b/fs/ecryptfs/netlink.c
@@ -165,22 +165,10 @@ static int ecryptfs_process_nl_quit(struct sk_buff *skb)
* it to its desired netlink context element and wake up the process
* that is waiting for a response.
*/
-static void ecryptfs_receive_nl_message(struct sock *sk, int len)
+static void ecryptfs_receive_nl_message(struct sk_buff *skb)
{
- struct sk_buff *skb;
struct nlmsghdr *nlh;
- int rc = 0; /* skb_recv_datagram requires this */
-receive:
- skb = skb_recv_datagram(sk, 0, 0, &rc);
- if (rc == -EINTR)
- goto receive;
- else if (rc < 0) {
- ecryptfs_printk(KERN_ERR, "Error occurred while "
- "receiving eCryptfs netlink message; "
- "rc = [%d]\n", rc);
- return;
- }
nlh = nlmsg_hdr(skb);
if (!NLMSG_OK(nlh, skb->len)) {
ecryptfs_printk(KERN_ERR, "Received corrupt netlink "
@@ -227,7 +215,7 @@ int ecryptfs_init_netlink(void)
{
int rc;
- ecryptfs_nl_sock = netlink_kernel_create(NETLINK_ECRYPTFS, 0,
+ ecryptfs_nl_sock = netlink_kernel_create(&init_net, NETLINK_ECRYPTFS, 0,
ecryptfs_receive_nl_message,
NULL, THIS_MODULE);
if (!ecryptfs_nl_sock) {
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index bce38e3f06c..ebaba021354 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -11,6 +11,7 @@ proc-y += inode.o root.o base.o generic.o array.o \
proc_tty.o proc_misc.o
proc-$(CONFIG_PROC_SYSCTL) += proc_sysctl.o
+proc-$(CONFIG_NET) += proc_net.o
proc-$(CONFIG_PROC_KCORE) += kcore.o
proc-$(CONFIG_PROC_VMCORE) += vmcore.o
proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index b215c3524fa..1820eb2ef76 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -16,6 +16,11 @@ extern int proc_sys_init(void);
#else
static inline void proc_sys_init(void) { }
#endif
+#ifdef CONFIG_NET
+extern int proc_net_init(void);
+#else
+static inline int proc_net_init(void) { return 0; }
+#endif
struct vmalloc_info {
unsigned long used;
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
new file mode 100644
index 00000000000..2e91fb756e9
--- /dev/null
+++ b/fs/proc/proc_net.c
@@ -0,0 +1,200 @@
+/*
+ * linux/fs/proc/net.c
+ *
+ * Copyright (C) 2007
+ *
+ * Author: Eric Biederman <ebiederm@xmission.com>
+ *
+ * proc net directory handling functions
+ */
+
+#include <asm/uaccess.h>
+
+#include <linux/errno.h>
+#include <linux/time.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/smp_lock.h>
+#include <linux/mount.h>
+#include <linux/nsproxy.h>
+#include <net/net_namespace.h>
+
+#include "internal.h"
+
+
+struct proc_dir_entry *proc_net_create(struct net *net,
+ const char *name, mode_t mode, get_info_t *get_info)
+{
+ return create_proc_info_entry(name,mode, net->proc_net, get_info);
+}
+EXPORT_SYMBOL_GPL(proc_net_create);
+
+struct proc_dir_entry *proc_net_fops_create(struct net *net,
+ const char *name, mode_t mode, const struct file_operations *fops)
+{
+ struct proc_dir_entry *res;
+
+ res = create_proc_entry(name, mode, net->proc_net);
+ if (res)
+ res->proc_fops = fops;
+ return res;
+}
+EXPORT_SYMBOL_GPL(proc_net_fops_create);
+
+void proc_net_remove(struct net *net, const char *name)
+{
+ remove_proc_entry(name, net->proc_net);
+}
+EXPORT_SYMBOL_GPL(proc_net_remove);
+
+struct net *get_proc_net(const struct inode *inode)
+{
+ return maybe_get_net(PDE_NET(PDE(inode)));
+}
+EXPORT_SYMBOL_GPL(get_proc_net);
+
+static struct proc_dir_entry *proc_net_shadow;
+
+static struct dentry *proc_net_shadow_dentry(struct dentry *parent,
+ struct proc_dir_entry *de)
+{
+ struct dentry *shadow = NULL;
+ struct inode *inode;
+ if (!de)
+ goto out;
+ de_get(de);
+ inode = proc_get_inode(parent->d_inode->i_sb, de->low_ino, de);
+ if (!inode)
+ goto out_de_put;
+ shadow = d_alloc_name(parent, de->name);
+ if (!shadow)
+ goto out_iput;
+ shadow->d_op = parent->d_op; /* proc_dentry_operations */
+ d_instantiate(shadow, inode);
+out:
+ return shadow;
+out_iput:
+ iput(inode);
+out_de_put:
+ de_put(de);
+ goto out;
+}
+
+static void *proc_net_follow_link(struct dentry *parent, struct nameidata *nd)
+{
+ struct net *net = current->nsproxy->net_ns;
+ struct dentry *shadow;
+ shadow = proc_net_shadow_dentry(parent, net->proc_net);
+ if (!shadow)
+ return ERR_PTR(-ENOENT);
+
+ dput(nd->dentry);
+ /* My dentry count is 1 and that should be enough as the
+ * shadow dentry is thrown away immediately.
+ */
+ nd->dentry = shadow;
+ return NULL;
+}
+
+static struct dentry *proc_net_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd)
+{
+ struct net *net = current->nsproxy->net_ns;
+ struct dentry *shadow;
+
+ shadow = proc_net_shadow_dentry(nd->dentry, net->proc_net);
+ if (!shadow)
+ return ERR_PTR(-ENOENT);
+
+ dput(nd->dentry);
+ nd->dentry = shadow;
+
+ return shadow->d_inode->i_op->lookup(shadow->d_inode, dentry, nd);
+}
+
+static int proc_net_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+ struct net *net = current->nsproxy->net_ns;
+ struct dentry *shadow;
+ int ret;
+
+ shadow = proc_net_shadow_dentry(dentry->d_parent, net->proc_net);
+ if (!shadow)
+ return -ENOENT;
+ ret = shadow->d_inode->i_op->setattr(shadow, iattr);
+ dput(shadow);
+ return ret;
+}
+
+static const struct file_operations proc_net_dir_operations = {
+ .read = generic_read_dir,
+};
+
+static struct inode_operations proc_net_dir_inode_operations = {
+ .follow_link = proc_net_follow_link,
+ .lookup = proc_net_lookup,
+ .setattr = proc_net_setattr,
+};
+
+static __net_init int proc_net_ns_init(struct net *net)
+{
+ struct proc_dir_entry *root, *netd, *net_statd;
+ int err;
+
+ err = -ENOMEM;
+ root = kzalloc(sizeof(*root), GFP_KERNEL);
+ if (!root)
+ goto out;
+
+ err = -EEXIST;
+ netd = proc_mkdir("net", root);
+ if (!netd)
+ goto free_root;
+
+ err = -EEXIST;
+ net_statd = proc_mkdir("stat", netd);
+ if (!net_statd)
+ goto free_net;
+
+ root->data = net;
+ netd->data = net;
+ net_statd->data = net;
+
+ net->proc_net_root = root;
+ net->proc_net = netd;
+ net->proc_net_stat = net_statd;
+ err = 0;
+
+out:
+ return err;
+free_net:
+ remove_proc_entry("net", root);
+free_root:
+ kfree(root);
+ goto out;
+}
+
+static __net_exit void proc_net_ns_exit(struct net *net)
+{
+ remove_proc_entry("stat", net->proc_net);
+ remove_proc_entry("net", net->proc_net_root);
+ kfree(net->proc_net_root);
+}
+
+struct pernet_operations __net_initdata proc_net_ns_ops = {
+ .init = proc_net_ns_init,
+ .exit = proc_net_ns_exit,
+};
+
+int __init proc_net_init(void)
+{
+ proc_net_shadow = proc_mkdir("net", NULL);
+ proc_net_shadow->proc_iops = &proc_net_dir_inode_operations;
+ proc_net_shadow->proc_fops = &proc_net_dir_operations;
+
+ return register_pernet_subsys(&proc_net_ns_ops);
+}
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 41f17037f73..cf3046638b0 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -21,7 +21,7 @@
#include "internal.h"
-struct proc_dir_entry *proc_net, *proc_net_stat, *proc_bus, *proc_root_fs, *proc_root_driver;
+struct proc_dir_entry *proc_bus, *proc_root_fs, *proc_root_driver;
static int proc_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
@@ -61,8 +61,8 @@ void __init proc_root_init(void)
return;
}
proc_misc_init();
- proc_net = proc_mkdir("net", NULL);
- proc_net_stat = proc_mkdir("net/stat", NULL);
+
+ proc_net_init();
#ifdef CONFIG_SYSVIPC
proc_mkdir("sysvipc", NULL);
@@ -159,7 +159,5 @@ EXPORT_SYMBOL(create_proc_entry);
EXPORT_SYMBOL(remove_proc_entry);
EXPORT_SYMBOL(proc_root);
EXPORT_SYMBOL(proc_root_fs);
-EXPORT_SYMBOL(proc_net);
-EXPORT_SYMBOL(proc_net_stat);
EXPORT_SYMBOL(proc_bus);
EXPORT_SYMBOL(proc_root_driver);
diff --git a/fs/seq_file.c b/fs/seq_file.c
index bbb19be260c..ca71c115bda 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -429,6 +429,39 @@ int seq_release_private(struct inode *inode, struct file *file)
}
EXPORT_SYMBOL(seq_release_private);
+void *__seq_open_private(struct file *f, const struct seq_operations *ops,
+ int psize)
+{
+ int rc;
+ void *private;
+ struct seq_file *seq;
+
+ private = kzalloc(psize, GFP_KERNEL);
+ if (private == NULL)
+ goto out;
+
+ rc = seq_open(f, ops);
+ if (rc < 0)
+ goto out_free;
+
+ seq = f->private_data;
+ seq->private = private;
+ return private;
+
+out_free:
+ kfree(private);
+out:
+ return NULL;
+}
+EXPORT_SYMBOL(__seq_open_private);
+
+int seq_open_private(struct file *filp, const struct seq_operations *ops,
+ int psize)
+{
+ return __seq_open_private(filp, ops, psize) ? 0 : -ENOMEM;
+}
+EXPORT_SYMBOL(seq_open_private);
+
int seq_putc(struct seq_file *m, char c)
{
if (m->count < m->size) {