diff --git a/arch/alpha/include/uapi/asm/fcntl.h b/arch/alpha/include/uapi/asm/fcntl.h index 6d9e805f18a7..09f49a6b87d1 100644 --- a/arch/alpha/include/uapi/asm/fcntl.h +++ b/arch/alpha/include/uapi/asm/fcntl.h @@ -32,6 +32,7 @@ #define O_SYNC (__O_SYNC|O_DSYNC) #define O_PATH 040000000 +#define __O_TMPFILE 0100000000 #define F_GETLK 7 #define F_SETLK 8 diff --git a/arch/arm64/configs/lineage_s2_defconfig b/arch/arm64/configs/lineage_s2_defconfig index f3b2ac10bf74..8829db99767a 100755 --- a/arch/arm64/configs/lineage_s2_defconfig +++ b/arch/arm64/configs/lineage_s2_defconfig @@ -924,7 +924,7 @@ CONFIG_CFG80211_INTERNAL_REGDB=y CONFIG_RFKILL=y CONFIG_RFKILL_PM=y CONFIG_RFKILL_LEDS=y -# CONFIG_RFKILL_INPUT is not set +CONFIG_RFKILL_INPUT=y # CONFIG_RFKILL_REGULATOR is not set # CONFIG_RFKILL_GPIO is not set # CONFIG_NET_9P is not set diff --git a/arch/arm64/include/uapi/asm/bitsperlong.h b/arch/arm64/include/uapi/asm/bitsperlong.h index fce9c2924fa3..71f93d50bb2d 100644 --- a/arch/arm64/include/uapi/asm/bitsperlong.h +++ b/arch/arm64/include/uapi/asm/bitsperlong.h @@ -16,7 +16,11 @@ #ifndef __ASM_BITSPERLONG_H #define __ASM_BITSPERLONG_H +#ifdef __aarch64__ #define __BITS_PER_LONG 64 +#else +#define __BITS_PER_LONG 32 +#endif #include diff --git a/arch/parisc/include/uapi/asm/fcntl.h b/arch/parisc/include/uapi/asm/fcntl.h index 0304b92ccfea..34a46cbc76ed 100644 --- a/arch/parisc/include/uapi/asm/fcntl.h +++ b/arch/parisc/include/uapi/asm/fcntl.h @@ -20,6 +20,7 @@ #define O_INVISIBLE 004000000 /* invisible I/O, for DMAPI/XDSM */ #define O_PATH 020000000 +#define __O_TMPFILE 040000000 #define F_GETLK64 8 #define F_SETLK64 9 diff --git a/arch/sparc/include/uapi/asm/fcntl.h b/arch/sparc/include/uapi/asm/fcntl.h index d0b83f66f356..7e8ace5bf760 100644 --- a/arch/sparc/include/uapi/asm/fcntl.h +++ b/arch/sparc/include/uapi/asm/fcntl.h @@ -35,6 +35,7 @@ #define O_SYNC (__O_SYNC|O_DSYNC) #define O_PATH 0x1000000 +#define __O_TMPFILE 0x2000000 #define F_GETOWN 5 /* for sockets. */ #define F_SETOWN 6 /* for sockets. */ diff --git a/fs/dcache.c b/fs/dcache.c index f365091379cd..4003e7d20423 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -3094,6 +3094,22 @@ void d_genocide(struct dentry *root) goto again; } +void d_tmpfile(struct dentry *dentry, struct inode *inode) +{ + inode_dec_link_count(inode); + BUG_ON(dentry->d_name.name != dentry->d_iname || + !hlist_unhashed(&dentry->d_u.d_alias) || + !d_unlinked(dentry)); + spin_lock(&dentry->d_parent->d_lock); + spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED); + dentry->d_name.len = sprintf(dentry->d_iname, "#%llu", + (unsigned long long)inode->i_ino); + spin_unlock(&dentry->d_lock); + spin_unlock(&dentry->d_parent->d_lock); + d_instantiate(dentry, inode); +} +EXPORT_SYMBOL(d_tmpfile); + /** * find_inode_number - check for dentry with name * @dir: directory to check diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index 73b0d9519836..256dd5f4c1c4 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -119,6 +119,29 @@ static int ext2_create (struct inode * dir, struct dentry * dentry, umode_t mode return ext2_add_nondir(dentry, inode); } +static int ext2_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + struct inode *inode = ext2_new_inode(dir, mode, NULL); + if (IS_ERR(inode)) + return PTR_ERR(inode); + + inode->i_op = &ext2_file_inode_operations; + if (ext2_use_xip(inode->i_sb)) { + inode->i_mapping->a_ops = &ext2_aops_xip; + inode->i_fop = &ext2_xip_file_operations; + } else if (test_opt(inode->i_sb, NOBH)) { + inode->i_mapping->a_ops = &ext2_nobh_aops; + inode->i_fop = &ext2_file_operations; + } else { + inode->i_mapping->a_ops = &ext2_aops; + inode->i_fop = &ext2_file_operations; + } + mark_inode_dirty(inode); + d_tmpfile(dentry, inode); + unlock_new_inode(inode); + return 0; +} + static int ext2_mknod (struct inode * dir, struct dentry *dentry, umode_t mode, dev_t rdev) { struct inode * inode; @@ -398,6 +421,7 @@ const struct inode_operations ext2_dir_inode_operations = { #endif .setattr = ext2_setattr, .get_acl = ext2_get_acl, + .tmpfile = ext2_tmpfile, }; const struct inode_operations ext2_special_inode_operations = { diff --git a/fs/inode.c b/fs/inode.c index eb66712897d6..06d3f378285e 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -333,8 +333,10 @@ EXPORT_SYMBOL(set_nlink); */ void inc_nlink(struct inode *inode) { - if (WARN_ON(inode->i_nlink == 0)) + if (unlikely(inode->i_nlink == 0)) { + WARN_ON(!(inode->i_state & I_LINKABLE)); atomic_long_dec(&inode->i_sb->s_remove_count); + } inode->__i_nlink++; } diff --git a/fs/minix/namei.c b/fs/minix/namei.c index 0db73d9dd668..cd950e2331b6 100644 --- a/fs/minix/namei.c +++ b/fs/minix/namei.c @@ -54,6 +54,18 @@ static int minix_mknod(struct inode * dir, struct dentry *dentry, umode_t mode, return error; } +static int minix_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + int error; + struct inode *inode = minix_new_inode(dir, mode, &error); + if (inode) { + minix_set_inode(inode, 0); + mark_inode_dirty(inode); + d_tmpfile(dentry, inode); + } + return error; +} + static int minix_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { @@ -254,4 +266,5 @@ const struct inode_operations minix_dir_inode_operations = { .mknod = minix_mknod, .rename = minix_rename, .getattr = minix_getattr, + .tmpfile = minix_tmpfile, }; diff --git a/fs/namei.c b/fs/namei.c index 9e66ca32fba0..b1ed4da38e65 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3003,6 +3003,68 @@ static int do_last(struct nameidata *nd, struct path *path, goto retry_lookup; } +static int do_tmpfile(int dfd, struct filename *pathname, + struct nameidata *nd, int flags, + const struct open_flags *op, + struct file *file, int *opened) +{ + static const struct qstr name = QSTR_INIT("/", 1); + struct dentry *dentry, *child; + struct inode *dir; + int error = path_lookupat(dfd, pathname->name, + flags | LOOKUP_DIRECTORY, nd); + if (unlikely(error)) + return error; + error = mnt_want_write(nd->path.mnt); + if (unlikely(error)) + goto out; + /* we want directory to be writable */ + error = inode_permission(nd->inode, MAY_WRITE | MAY_EXEC); + if (error) + goto out2; + dentry = nd->path.dentry; + dir = dentry->d_inode; + if (!dir->i_op->tmpfile) { + error = -EOPNOTSUPP; + goto out2; + } + child = d_alloc(dentry, &name); + if (unlikely(!child)) { + error = -ENOMEM; + goto out2; + } + nd->flags &= ~LOOKUP_DIRECTORY; + nd->flags |= op->intent; + dput(nd->path.dentry); + nd->path.dentry = child; + error = dir->i_op->tmpfile(dir, nd->path.dentry, op->mode); + if (error) + goto out2; + audit_inode(pathname, nd->path.dentry, 0); + /* Don't check for other permissions, the inode was just created */ + error = may_open(&nd->path, MAY_OPEN, op->open_flag); + if (error) + goto out2; + file->f_path.mnt = nd->path.mnt; + error = finish_open(file, nd->path.dentry, NULL, opened); + if (error) + goto out2; + error = open_check_o_direct(file); + if (error) { + fput(file); + } else if (!(op->open_flag & O_EXCL)) { + struct inode *inode = file_inode(file); + spin_lock(&inode->i_lock); + inode->i_state |= I_LINKABLE; + spin_unlock(&inode->i_lock); + } +out2: + mnt_drop_write(nd->path.mnt); +out: + path_put(&nd->path); + return error; +} + static struct file *path_openat(int dfd, struct filename *pathname, struct nameidata *nd, const struct open_flags *op, int flags) { @@ -3018,6 +3080,11 @@ static struct file *path_openat(int dfd, struct filename *pathname, file->f_flags = op->open_flag; + if (unlikely(file->f_flags & __O_TMPFILE)) { + error = do_tmpfile(dfd, pathname, nd, flags, op, file, &opened); + goto out; + } + error = path_init(dfd, pathname->name, flags | LOOKUP_PARENT, nd, &base); if (unlikely(error)) goto out; @@ -3711,12 +3778,18 @@ int vfs_link2(struct vfsmount *mnt, struct dentry *old_dentry, struct inode *dir mutex_lock(&inode->i_mutex); /* Make sure we don't allow creating hardlink to an unlinked file */ - if (inode->i_nlink == 0) + if (inode->i_nlink == 0 && !(inode->i_state & I_LINKABLE)) error = -ENOENT; else if (max_links && inode->i_nlink >= max_links) error = -EMLINK; else error = dir->i_op->link(old_dentry, dir, new_dentry); + + if (!error && (inode->i_state & I_LINKABLE)) { + spin_lock(&inode->i_lock); + inode->i_state &= ~I_LINKABLE; + spin_unlock(&inode->i_lock); + } mutex_unlock(&inode->i_mutex); if (!error) fsnotify_link(dir, inode, new_dentry); diff --git a/fs/open.c b/fs/open.c index 4bf18067c8e5..5b259bf428de 100644 --- a/fs/open.c +++ b/fs/open.c @@ -839,11 +839,15 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o if (flags & __O_SYNC) flags |= O_DSYNC; - /* - * If we have O_PATH in the open flag. Then we - * cannot have anything other than the below set of flags - */ - if (flags & O_PATH) { + if (flags & __O_TMPFILE) { + if ((flags & O_TMPFILE_MASK) != O_TMPFILE) + return -EINVAL; + acc_mode = MAY_OPEN | ACC_MODE(flags); + } else if (flags & O_PATH) { + /* + * If we have O_PATH in the open flag. Then we + * cannot have anything other than the below set of flags + */ flags &= O_DIRECTORY | O_NOFOLLOW | O_PATH; acc_mode = 0; } else { diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f576f8a981d3..5e150d3731cc 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -247,6 +247,8 @@ extern struct dentry * d_make_root(struct inode *); /* - the ramfs-type tree */ extern void d_genocide(struct dentry *); +extern void d_tmpfile(struct dentry *, struct inode *); + extern struct dentry *d_find_alias(struct inode *); extern void d_prune_aliases(struct inode *); diff --git a/include/linux/fs.h b/include/linux/fs.h index f14d780d8145..939514738d2f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1592,6 +1592,7 @@ struct inode_operations { int (*atomic_open)(struct inode *, struct dentry *, struct file *, unsigned open_flag, umode_t create_mode, int *opened); + int (*tmpfile) (struct inode *, struct dentry *, umode_t); } ____cacheline_aligned; ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, @@ -1759,6 +1760,7 @@ struct super_operations { #define I_REFERENCED (1 << 8) #define __I_DIO_WAKEUP 9 #define I_DIO_WAKEUP (1 << I_DIO_WAKEUP) +#define I_LINKABLE (1 << 10) #define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES) diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h index a48937d4a5ea..05ac354e124d 100644 --- a/include/uapi/asm-generic/fcntl.h +++ b/include/uapi/asm-generic/fcntl.h @@ -84,6 +84,14 @@ #define O_PATH 010000000 #endif +#ifndef __O_TMPFILE +#define __O_TMPFILE 020000000 +#endif + +/* a horrid kludge trying to make sure that this will fail on old kernels */ +#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY | O_RDWR) +#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT | O_ACCMODE) + #ifndef O_NDELAY #define O_NDELAY O_NONBLOCK #endif diff --git a/include/uapi/linux/rmnet_data.h b/include/uapi/linux/rmnet_data.h index 8cfe0270ef4f..7ddfa20cec32 100644 --- a/include/uapi/linux/rmnet_data.h +++ b/include/uapi/linux/rmnet_data.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2015, 2017 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -223,8 +223,19 @@ enum rmnet_netlink_message_types_e { * uint32_t MAP Flow Handle * Returns: status code */ - RMNET_NETLINK_DEL_VND_TC_FLOW + RMNET_NETLINK_DEL_VND_TC_FLOW, + + /* + * RMNET_NETLINK_NEW_VND_WITH_NAME - Creates a new virtual network + * device node with the specified + * device name + * Args: int32_t node number + * char[] vnd_name - Use as name + * Returns: status code + */ + RMNET_NETLINK_NEW_VND_WITH_NAME }; +#define RMNET_NETLINK_NEW_VND_WITH_NAME RMNET_NETLINK_NEW_VND_WITH_NAME enum rmnet_config_endpoint_modes_e { /* Pass the frame up the stack with no modifications to skb->dev */ diff --git a/mm/shmem.c b/mm/shmem.c index 87e496fc4590..ef0bba3c177c 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2047,6 +2047,37 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) return error; } +static int +shmem_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + struct inode *inode; + int error = -ENOSPC; + + inode = shmem_get_inode(dir->i_sb, dir, mode, 0, VM_NORESERVE); + if (inode) { + error = security_inode_init_security(inode, dir, + NULL, + shmem_initxattrs, NULL); + if (error) { + if (error != -EOPNOTSUPP) { + iput(inode); + return error; + } + } +#ifdef CONFIG_TMPFS_POSIX_ACL + error = generic_acl_init(inode, dir); + if (error) { + iput(inode); + return error; + } +#else + error = 0; +#endif + d_tmpfile(dentry, inode); + } + return error; +} + static int shmem_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { int error; @@ -2807,6 +2838,7 @@ static const struct inode_operations shmem_dir_inode_operations = { .rmdir = shmem_rmdir, .mknod = shmem_mknod, .rename = shmem_rename, + .tmpfile = shmem_tmpfile, #endif #ifdef CONFIG_TMPFS_XATTR .setxattr = shmem_setxattr, diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 36fdef85e98e..ad8864eb01b2 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -222,15 +222,15 @@ destroy_conntrack(struct nf_conntrack *nfct) spin_lock_bh(&nf_conntrack_lock); - list_for_each_safe(sip_node_list, sip_node_save_list, - &ct->sip_segment_list) - { - sip_node = list_entry(sip_node_list, struct sip_list, list); - pr_debug("freeing item in the SIP list\n"); - list_del(&(sip_node->list)); - kfree(sip_node); - } - + pr_debug("freeing item in the SIP list\n"); + if (ct->sip_segment_list.next != NULL) + list_for_each_safe(sip_node_list, sip_node_save_list, + &ct->sip_segment_list) { + sip_node = list_entry(sip_node_list, + struct sip_list, list); + list_del(&sip_node->list); + kfree(sip_node); + } /* Expectations will have been removed in clean_from_lists, * except TFTP can create an expectation on the first packet, * before connection is in the list, so we need to clean here, diff --git a/net/rmnet_data/rmnet_data_config.c b/net/rmnet_data/rmnet_data_config.c index 04d639895381..45a25cd1f6d7 100644 --- a/net/rmnet_data/rmnet_data_config.c +++ b/net/rmnet_data/rmnet_data_config.c @@ -629,6 +629,13 @@ void rmnet_config_netlink_msg_handler(struct sk_buff *skb) rmnet_header->vnd.vnd_name); break; + case RMNET_NETLINK_NEW_VND_WITH_NAME: + resp_rmnet->crd = RMNET_NETLINK_MSG_RETURNCODE; + resp_rmnet->return_code = rmnet_create_vnd_name( + rmnet_header->vnd.id, + rmnet_header->vnd.vnd_name); + break; + case RMNET_NETLINK_FREE_VND: resp_rmnet->crd = RMNET_NETLINK_MSG_RETURNCODE; /* Please check rmnet_vnd_free_dev documentation regarding @@ -1071,11 +1078,11 @@ int rmnet_create_vnd(int id) struct net_device *dev; ASSERT_RTNL(); LOGL("(%d);", id); - return rmnet_vnd_create_dev(id, &dev, NULL); + return rmnet_vnd_create_dev(id, &dev, NULL, 0); } /** - * rmnet_create_vnd() - Create virtual network device node + * rmnet_create_vnd_prefix() - Create virtual network device node * @id: RmNet virtual device node id * @prefix: String prefix for device name * @@ -1087,7 +1094,24 @@ int rmnet_create_vnd_prefix(int id, const char *prefix) struct net_device *dev; ASSERT_RTNL(); LOGL("(%d, \"%s\");", id, prefix); - return rmnet_vnd_create_dev(id, &dev, prefix); + return rmnet_vnd_create_dev(id, &dev, prefix, 0); +} + +/** + * rmnet_create_vnd_name() - Create virtual network device node + * @id: RmNet virtual device node id + * @prefix: String prefix for device name + * + * Return: + * - result of rmnet_vnd_create_dev() + */ +int rmnet_create_vnd_name(int id, const char *name) +{ + struct net_device *dev; + + ASSERT_RTNL(); + LOGL("(%d, \"%s\");", id, name); + return rmnet_vnd_create_dev(id, &dev, name, 1); } /** diff --git a/net/rmnet_data/rmnet_data_config.h b/net/rmnet_data/rmnet_data_config.h index fe668a86eb45..d944ef4f4337 100644 --- a/net/rmnet_data/rmnet_data_config.h +++ b/net/rmnet_data/rmnet_data_config.h @@ -120,6 +120,7 @@ int rmnet_config_notify_cb(struct notifier_block *nb, unsigned long event, void *data); int rmnet_create_vnd(int id); int rmnet_create_vnd_prefix(int id, const char *name); +int rmnet_create_vnd_name(int id, const char *name); int rmnet_free_vnd(int id); #endif /* _RMNET_DATA_CONFIG_H_ */ diff --git a/net/rmnet_data/rmnet_data_vnd.c b/net/rmnet_data/rmnet_data_vnd.c index 50aaf17d6c4c..dd735c04ab1d 100644 --- a/net/rmnet_data/rmnet_data_vnd.c +++ b/net/rmnet_data/rmnet_data_vnd.c @@ -553,7 +553,7 @@ int rmnet_vnd_init(void) * - RMNET_CONFIG_UNKNOWN_ERROR if register_netdevice() fails */ int rmnet_vnd_create_dev(int id, struct net_device **new_device, - const char *prefix) + const char *prefix, int use_name) { struct net_device *dev; char dev_prefix[IFNAMSIZ]; @@ -569,12 +569,15 @@ int rmnet_vnd_create_dev(int id, struct net_device **new_device, return RMNET_CONFIG_DEVICE_IN_USE; } - if (!prefix) + if (!prefix && !use_name) p = scnprintf(dev_prefix, IFNAMSIZ, "%s%%d", RMNET_DATA_DEV_NAME_STR); + else if (prefix && use_name) + p = scnprintf(dev_prefix, IFNAMSIZ, "%s", prefix); + else if (prefix && !use_name) + p = scnprintf(dev_prefix, IFNAMSIZ, "%s%%d", prefix); else - p = scnprintf(dev_prefix, IFNAMSIZ, "%s%%d", - prefix); + return RMNET_CONFIG_BAD_ARGUMENTS; if (p >= (IFNAMSIZ-1)) { LOGE("Specified prefix longer than IFNAMSIZ"); return RMNET_CONFIG_BAD_ARGUMENTS; diff --git a/net/rmnet_data/rmnet_data_vnd.h b/net/rmnet_data/rmnet_data_vnd.h index cb57f571be13..7a1af24fa051 100644 --- a/net/rmnet_data/rmnet_data_vnd.h +++ b/net/rmnet_data/rmnet_data_vnd.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -27,7 +27,7 @@ int rmnet_vnd_do_flow_control(struct net_device *dev, struct rmnet_logical_ep_conf_s *rmnet_vnd_get_le_config(struct net_device *dev); int rmnet_vnd_get_name(int id, char *name, int name_len); int rmnet_vnd_create_dev(int id, struct net_device **new_device, - const char *prefix); + const char *prefix, int use_name); int rmnet_vnd_free_dev(int id); int rmnet_vnd_rx_fixup(struct sk_buff *skb, struct net_device *dev); int rmnet_vnd_tx_fixup(struct sk_buff *skb, struct net_device *dev);