From 4eb329a5aa113048ec9dbe2bd81ca27adab04e2d Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Wed, 5 Mar 2008 18:37:16 -0800 Subject: irda: replace __inline with inline Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- include/net/irda/irttp.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/net/irda/irttp.h b/include/net/irda/irttp.h index 32c385dd9e0..0788c23d282 100644 --- a/include/net/irda/irttp.h +++ b/include/net/irda/irttp.h @@ -169,17 +169,17 @@ int irttp_disconnect_request(struct tsap_cb *self, struct sk_buff *skb, void irttp_flow_request(struct tsap_cb *self, LOCAL_FLOW flow); struct tsap_cb *irttp_dup(struct tsap_cb *self, void *instance); -static __inline __u32 irttp_get_saddr(struct tsap_cb *self) +static inline __u32 irttp_get_saddr(struct tsap_cb *self) { return irlmp_get_saddr(self->lsap); } -static __inline __u32 irttp_get_daddr(struct tsap_cb *self) +static inline __u32 irttp_get_daddr(struct tsap_cb *self) { return irlmp_get_daddr(self->lsap); } -static __inline __u32 irttp_get_max_seg_size(struct tsap_cb *self) +static inline __u32 irttp_get_max_seg_size(struct tsap_cb *self) { return self->max_seg_size; } -- cgit v1.2.3-70-g09d2 From 04005dd9ae7bf1031408869c33df96149ebb1086 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 5 Mar 2008 18:47:03 -0800 Subject: bluetooth: Make hci_sock_cleanup() return void hci_sock_cleanup() always returns 0 and its return value isn't used anywhere in the code. Compile-tested with 'make allyesconfig && make net/bluetooth/bluetooth.ko' Signed-off-by: Tobias Klauser Signed-off-by: Andrew Morton Acked-by: Marcel Holtmann --- include/net/bluetooth/bluetooth.h | 2 +- net/bluetooth/hci_sock.c | 4 +--- 2 files changed, 2 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h index 771d17783c1..750648df13f 100644 --- a/include/net/bluetooth/bluetooth.h +++ b/include/net/bluetooth/bluetooth.h @@ -170,7 +170,7 @@ static inline int skb_frags_no(struct sk_buff *skb) int bt_err(__u16 code); extern int hci_sock_init(void); -extern int hci_sock_cleanup(void); +extern void hci_sock_cleanup(void); extern int bt_sysfs_init(void); extern void bt_sysfs_cleanup(void); diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 14991323c27..b5d4019d357 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -734,7 +734,7 @@ error: return err; } -int __exit hci_sock_cleanup(void) +void __exit hci_sock_cleanup(void) { if (bt_sock_unregister(BTPROTO_HCI) < 0) BT_ERR("HCI socket unregistration failed"); @@ -742,6 +742,4 @@ int __exit hci_sock_cleanup(void) hci_unregister_notifier(&hci_sock_nblock); proto_unregister(&hci_sk_proto); - - return 0; } -- cgit v1.2.3-70-g09d2 From e9720acd728a46cb40daa52c99a979f7c4ff195c Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Fri, 7 Mar 2008 11:08:40 -0800 Subject: [NET]: Make /proc/net a symlink on /proc/self/net (v3) Current /proc/net is done with so called "shadows", but current implementation is broken and has little chances to get fixed. The problem is that dentries subtree of /proc/net directory has fancy revalidation rules to make processes living in different net namespaces see different entries in /proc/net subtree, but currently, tasks see in the /proc/net subdir the contents of any other namespace, depending on who opened the file first. The proposed fix is to turn /proc/net into a symlink, which points to /proc/self/net, which in turn shows what previously was in /proc/net - the network-related info, from the net namespace the appropriate task lives in. # ls -l /proc/net lrwxrwxrwx 1 root root 8 Mar 5 15:17 /proc/net -> self/net In other words - this behaves like /proc/mounts, but unlike "mounts", "net" is not a file, but a directory. Changes from v2: * Fixed discrepancy of /proc/net nlink count and selinux labeling screwup pointed out by Stephen. To get the correct nlink count the ->getattr callback for /proc/net is overridden to read one from the net->proc_net entry. To make selinux still work the net->proc_net entry is initialized properly, i.e. with the "net" name and the proc_net parent. Selinux fixes are Acked-by: Stephen Smalley Changes from v1: * Fixed a task_struct leak in get_proc_task_net, pointed out by Paul. Signed-off-by: Pavel Emelyanov Acked-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- fs/proc/base.c | 1 + fs/proc/generic.c | 26 ++++++---- fs/proc/internal.h | 7 +++ fs/proc/proc_net.c | 117 +++++++++++++++++++++++++++++++++----------- include/linux/proc_fs.h | 3 -- include/net/net_namespace.h | 1 - 6 files changed, 114 insertions(+), 41 deletions(-) (limited to 'include') diff --git a/fs/proc/base.c b/fs/proc/base.c index 96ee899d650..cc43cf0c1fa 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2274,6 +2274,7 @@ static const struct pid_entry tgid_base_stuff[] = { DIR("task", S_IRUGO|S_IXUGO, task), DIR("fd", S_IRUSR|S_IXUSR, fd), DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo), + DIR("net", S_IRUGO|S_IXUSR, net), REG("environ", S_IRUSR, environ), INF("auxv", S_IRUSR, pid_auxv), ONE("status", S_IRUGO, pid_status), diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 68971e66cd4..a36ad3c75cf 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -377,15 +377,14 @@ static struct dentry_operations proc_dentry_operations = * Don't create negative dentries here, return -ENOENT by hand * instead. */ -struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd) +struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir, + struct dentry *dentry) { struct inode *inode = NULL; - struct proc_dir_entry * de; int error = -ENOENT; lock_kernel(); spin_lock(&proc_subdir_lock); - de = PDE(dir); if (de) { for (de = de->subdir; de ; de = de->next) { if (de->namelen != dentry->d_name.len) @@ -393,8 +392,6 @@ struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nam if (!memcmp(dentry->d_name.name, de->name, de->namelen)) { unsigned int ino; - if (de->shadow_proc) - de = de->shadow_proc(current, de); ino = de->low_ino; de_get(de); spin_unlock(&proc_subdir_lock); @@ -417,6 +414,12 @@ out_unlock: return ERR_PTR(error); } +struct dentry *proc_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *nd) +{ + return proc_lookup_de(PDE(dir), dir, dentry); +} + /* * This returns non-zero if at EOF, so that the /proc * root directory can use this and check if it should @@ -426,10 +429,9 @@ out_unlock: * value of the readdir() call, as long as it's non-negative * for success.. */ -int proc_readdir(struct file * filp, - void * dirent, filldir_t filldir) +int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, + filldir_t filldir) { - struct proc_dir_entry * de; unsigned int ino; int i; struct inode *inode = filp->f_path.dentry->d_inode; @@ -438,7 +440,6 @@ int proc_readdir(struct file * filp, lock_kernel(); ino = inode->i_ino; - de = PDE(inode); if (!de) { ret = -EINVAL; goto out; @@ -499,6 +500,13 @@ out: unlock_kernel(); return ret; } +int proc_readdir(struct file *filp, void *dirent, filldir_t filldir) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + + return proc_readdir_de(PDE(inode), filp, dirent, filldir); +} + /* * These are the generic /proc directory operations. They * use the in-memory "struct proc_dir_entry" tree to parse diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 1c81c8f1aee..bc72f5c8c47 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -64,6 +64,8 @@ extern const struct file_operations proc_numa_maps_operations; extern const struct file_operations proc_smaps_operations; extern const struct file_operations proc_clear_refs_operations; extern const struct file_operations proc_pagemap_operations; +extern const struct file_operations proc_net_operations; +extern const struct inode_operations proc_net_inode_operations; void free_proc_entry(struct proc_dir_entry *de); @@ -83,3 +85,8 @@ static inline int proc_fd(struct inode *inode) { return PROC_I(inode)->fd; } + +struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino, + struct dentry *dentry); +int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, + filldir_t filldir); diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index 14e9b5aaf86..4caa5f774fb 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -63,6 +63,82 @@ int seq_release_net(struct inode *ino, struct file *f) } EXPORT_SYMBOL_GPL(seq_release_net); +static struct net *get_proc_task_net(struct inode *dir) +{ + struct task_struct *task; + struct nsproxy *ns; + struct net *net = NULL; + + rcu_read_lock(); + task = pid_task(proc_pid(dir), PIDTYPE_PID); + if (task != NULL) { + ns = task_nsproxy(task); + if (ns != NULL) + net = get_net(ns->net_ns); + } + rcu_read_unlock(); + + return net; +} + +static struct dentry *proc_tgid_net_lookup(struct inode *dir, + struct dentry *dentry, struct nameidata *nd) +{ + struct dentry *de; + struct net *net; + + de = ERR_PTR(-ENOENT); + net = get_proc_task_net(dir); + if (net != NULL) { + de = proc_lookup_de(net->proc_net, dir, dentry); + put_net(net); + } + return de; +} + +static int proc_tgid_net_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + struct inode *inode = dentry->d_inode; + struct net *net; + + net = get_proc_task_net(inode); + + generic_fillattr(inode, stat); + + if (net != NULL) { + stat->nlink = net->proc_net->nlink; + put_net(net); + } + + return 0; +} + +const struct inode_operations proc_net_inode_operations = { + .lookup = proc_tgid_net_lookup, + .getattr = proc_tgid_net_getattr, +}; + +static int proc_tgid_net_readdir(struct file *filp, void *dirent, + filldir_t filldir) +{ + int ret; + struct net *net; + + ret = -EINVAL; + net = get_proc_task_net(filp->f_path.dentry->d_inode); + if (net != NULL) { + ret = proc_readdir_de(net->proc_net, filp, dirent, filldir); + put_net(net); + } + return ret; +} + +const struct file_operations proc_net_operations = { + .read = generic_read_dir, + .readdir = proc_tgid_net_readdir, +}; + struct proc_dir_entry *proc_net_fops_create(struct net *net, const char *name, mode_t mode, const struct file_operations *fops) @@ -83,14 +159,6 @@ struct net *get_proc_net(const struct inode *inode) } EXPORT_SYMBOL_GPL(get_proc_net); -static struct proc_dir_entry *shadow_pde; - -static struct proc_dir_entry *proc_net_shadow(struct task_struct *task, - struct proc_dir_entry *de) -{ - return task->nsproxy->net_ns->proc_net; -} - struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, struct proc_dir_entry *parent) { @@ -104,45 +172,39 @@ EXPORT_SYMBOL_GPL(proc_net_mkdir); static __net_init int proc_net_ns_init(struct net *net) { - struct proc_dir_entry *root, *netd, *net_statd; + struct proc_dir_entry *netd, *net_statd; int err; err = -ENOMEM; - root = kzalloc(sizeof(*root), GFP_KERNEL); - if (!root) + netd = kzalloc(sizeof(*netd), GFP_KERNEL); + if (!netd) goto out; - err = -EEXIST; - netd = proc_net_mkdir(net, "net", root); - if (!netd) - goto free_root; + netd->data = net; + netd->nlink = 2; + netd->name = "net"; + netd->namelen = 3; + netd->parent = &proc_root; err = -EEXIST; net_statd = proc_net_mkdir(net, "stat", netd); if (!net_statd) goto free_net; - root->data = net; - - net->proc_net_root = root; net->proc_net = netd; net->proc_net_stat = net_statd; - err = 0; + return 0; +free_net: + kfree(netd); 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); + kfree(net->proc_net); } static struct pernet_operations __net_initdata proc_net_ns_ops = { @@ -152,8 +214,7 @@ static struct pernet_operations __net_initdata proc_net_ns_ops = { int __init proc_net_init(void) { - shadow_pde = proc_mkdir("net", NULL); - shadow_pde->shadow_proc = proc_net_shadow; + proc_symlink("net", NULL, "self/net"); return register_pernet_subsys(&proc_net_ns_ops); } diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index d9a9e718ad1..9b6c935f69c 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -50,8 +50,6 @@ typedef int (read_proc_t)(char *page, char **start, off_t off, typedef int (write_proc_t)(struct file *file, const char __user *buffer, unsigned long count, void *data); typedef int (get_info_t)(char *, char **, off_t, int); -typedef struct proc_dir_entry *(shadow_proc_t)(struct task_struct *task, - struct proc_dir_entry *pde); struct proc_dir_entry { unsigned int low_ino; @@ -82,7 +80,6 @@ struct proc_dir_entry { int pde_users; /* number of callers into module in progress */ spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */ struct completion *pde_unload_completion; - shadow_proc_t *shadow_proc; }; struct kcore_list { diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 28738b7d53e..923f2b8b909 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -31,7 +31,6 @@ struct net { struct proc_dir_entry *proc_net; struct proc_dir_entry *proc_net_stat; - struct proc_dir_entry *proc_net_root; struct list_head sysctl_table_headers; -- cgit v1.2.3-70-g09d2 From e621e69137b24fdbbe7ad28214e8d81e614c25b7 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Fri, 7 Mar 2008 11:11:13 -0800 Subject: [NET]: include into linux/ethtool.h for __u* typedef Signed-off-by: Kirill A. Shutemov Signed-off-by: David S. Miller --- include/linux/ethtool.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index fcbe8b640ff..c8d21635786 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -12,6 +12,7 @@ #ifndef _LINUX_ETHTOOL_H #define _LINUX_ETHTOOL_H +#include /* This should work for both 32 and 64 bit userland. */ struct ethtool_cmd { -- cgit v1.2.3-70-g09d2 From b5e85dee2a5433246d5b7488918a1a0ad22c046a Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 10 Mar 2008 16:41:06 -0700 Subject: [NETFILTER]: nfnetlink: fix ifdef in nfnetlink_compat.h Use __KERNEL__ instead of __KERNEL to make sure the headers are not usable by the kernel. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter/nfnetlink_compat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/netfilter/nfnetlink_compat.h b/include/linux/netfilter/nfnetlink_compat.h index 02a42d875cf..e1451760c9c 100644 --- a/include/linux/netfilter/nfnetlink_compat.h +++ b/include/linux/netfilter/nfnetlink_compat.h @@ -1,6 +1,6 @@ #ifndef _NFNETLINK_COMPAT_H #define _NFNETLINK_COMPAT_H -#ifndef __KERNEL +#ifndef __KERNEL__ /* Old nfnetlink macros for userspace */ /* nfnetlink groups: Up to 32 maximum */ -- cgit v1.2.3-70-g09d2 From 019f692ea719a2da17606511d2648b8cc1762268 Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Mon, 10 Mar 2008 16:43:41 -0700 Subject: [NETFILTER]: nf_conntrack: replace horrible hack with ksize() There's a horrible slab abuse in net/netfilter/nf_conntrack_extend.c that can be replaced with a call to ksize(). Cc: Christoph Lameter Signed-off-by: Pekka Enberg Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/net/netfilter/nf_conntrack_extend.h | 1 - net/netfilter/nf_conntrack_extend.c | 19 +++---------------- 2 files changed, 3 insertions(+), 17 deletions(-) (limited to 'include') diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h index 49aac6323fb..f736e842977 100644 --- a/include/net/netfilter/nf_conntrack_extend.h +++ b/include/net/netfilter/nf_conntrack_extend.h @@ -17,7 +17,6 @@ enum nf_ct_ext_id struct nf_ct_ext { u8 offset[NF_CT_EXT_NUM]; u8 len; - u8 real_len; char data[0]; }; diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c index 8b9be1e978c..2bd9963b5b3 100644 --- a/net/netfilter/nf_conntrack_extend.c +++ b/net/netfilter/nf_conntrack_extend.c @@ -19,14 +19,6 @@ static struct nf_ct_ext_type *nf_ct_ext_types[NF_CT_EXT_NUM]; static DEFINE_MUTEX(nf_ct_ext_type_mutex); -/* Horrible trick to figure out smallest amount worth kmallocing. */ -#define CACHE(x) (x) + 0 * -enum { - NF_CT_EXT_MIN_SIZE = -#include - 1 }; -#undef CACHE - void __nf_ct_ext_destroy(struct nf_conn *ct) { unsigned int i; @@ -53,7 +45,7 @@ EXPORT_SYMBOL(__nf_ct_ext_destroy); static void * nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id, gfp_t gfp) { - unsigned int off, len, real_len; + unsigned int off, len; struct nf_ct_ext_type *t; rcu_read_lock(); @@ -61,16 +53,14 @@ nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id, gfp_t gfp) BUG_ON(t == NULL); off = ALIGN(sizeof(struct nf_ct_ext), t->align); len = off + t->len; - real_len = t->alloc_size; rcu_read_unlock(); - *ext = kzalloc(real_len, gfp); + *ext = kzalloc(t->alloc_size, gfp); if (!*ext) return NULL; (*ext)->offset[id] = off; (*ext)->len = len; - (*ext)->real_len = real_len; return (void *)(*ext) + off; } @@ -95,7 +85,7 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp) newlen = newoff + t->len; rcu_read_unlock(); - if (newlen >= ct->ext->real_len) { + if (newlen >= ksize(ct->ext)) { new = kmalloc(newlen, gfp); if (!new) return NULL; @@ -114,7 +104,6 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp) rcu_read_unlock(); } kfree(ct->ext); - new->real_len = newlen; ct->ext = new; } @@ -156,8 +145,6 @@ static void update_alloc_size(struct nf_ct_ext_type *type) t1->alloc_size = ALIGN(t1->alloc_size, t2->align) + t2->len; } - if (t1->alloc_size < NF_CT_EXT_MIN_SIZE) - t1->alloc_size = NF_CT_EXT_MIN_SIZE; } } -- cgit v1.2.3-70-g09d2