litmus-rt.git - The LITMUS^RT kernel.

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author	Ian Campbell <ian.campbell@citrix.com>	2011-03-04 12:38:21 -0500
committer	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>	2011-03-09 19:59:10 -0500
commit	dc4972a4e2f3fee1663bd0670dfc4cd798d5f9b2 (patch)
tree	ef9c352dbe4b7db8fc11af2bd5e583f447b6f026 /include/linux/efi.h
parent	f4ee4af447b67135de7eb8a6615811c13ce938e2 (diff)

xen/p2m/m2p/gnttab: do not add failed grant maps to m2p override

The caller will not undo a mapping which failed and therefore the override will not be removed. This is especially bad in the case of GNTMAP_contains_pte mapping type mappings where m2p_add_override will destroy the kernel mapping of the page. This was observed via a failure of map_grant_pages in gntdev_mmap (due to userspace using a bad grant reference), which left the page in question unmapped (because it was a GNTMAP_contains_pte mapping) which led to a crash later on. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Daniel De Graaf <dgdegra@tycho.nsa.gov> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Diffstat (limited to 'include/linux/efi.h')

0 files changed, 0 insertions, 0 deletions

/* * NET An implementation of the SOCKET network access protocol. * This is the master header file for the Linux NET layer, * or, in plain English: the networking handling part of the * kernel. * * Version: @(#)net.h 1.0.3 05/25/93 * * Authors: Orest Zborowski, <obz@Kodak.COM> * Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_NET_H #define _LINUX_NET_H #include <linux/stringify.h> #include <linux/random.h> #include <linux/wait.h> #include <linux/fcntl.h> /* For O_CLOEXEC and O_NONBLOCK */ #include <linux/kmemcheck.h> #include <linux/rcupdate.h> #include <uapi/linux/net.h> struct poll_table_struct; struct pipe_inode_info; struct inode; struct file; struct net; #define SOCK_ASYNC_NOSPACE 0 #define SOCK_ASYNC_WAITDATA 1 #define SOCK_NOSPACE 2 #define SOCK_PASSCRED 3 #define SOCK_PASSSEC 4 #define SOCK_EXTERNALLY_ALLOCATED 5 #ifndef ARCH_HAS_SOCKET_TYPES /** * enum sock_type - Socket types * @SOCK_STREAM: stream (connection) socket * @SOCK_DGRAM: datagram (conn.less) socket * @SOCK_RAW: raw socket * @SOCK_RDM: reliably-delivered message * @SOCK_SEQPACKET: sequential packet socket * @SOCK_DCCP: Datagram Congestion Control Protocol socket * @SOCK_PACKET: linux specific way of getting packets at the dev level. * For writing rarp and other similar things on the user level. * * When adding some new socket type please * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS * overrides this enum for binary compat reasons. */ enum sock_type { SOCK_STREAM = 1, SOCK_DGRAM = 2, SOCK_RAW = 3, SOCK_RDM = 4, SOCK_SEQPACKET = 5, SOCK_DCCP = 6, SOCK_PACKET = 10, }; #define SOCK_MAX (SOCK_PACKET + 1) /* Mask which covers at least up to SOCK_MASK-1. The * remaining bits are used as flags. */ #define SOCK_TYPE_MASK 0xf /* Flags for socket, socketpair, accept4 */ #define SOCK_CLOEXEC O_CLOEXEC #ifndef SOCK_NONBLOCK #define SOCK_NONBLOCK O_NONBLOCK #endif #endif /* ARCH_HAS_SOCKET_TYPES */ enum sock_shutdown_cmd { SHUT_RD = 0, SHUT_WR = 1, SHUT_RDWR = 2, }; struct socket_wq { /* Note: wait MUST be first field of socket_wq */ wait_queue_head_t wait; struct fasync_struct *fasync_list; struct rcu_head rcu; } ____cacheline_aligned_in_smp; /** * struct socket - general BSD socket * @state: socket state (%SS_CONNECTED, etc) * @type: socket type (%SOCK_STREAM, etc) * @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc) * @ops: protocol specific socket operations * @file: File back pointer for gc * @sk: internal networking protocol agnostic socket representation * @wq: wait queue for several uses */ struct socket { socket_state state; kmemcheck_bitfield_begin(type); short type; kmemcheck_bitfield_end(type); unsigned long flags; struct socket_wq __rcu *wq; struct file *file; struct sock *sk; const struct proto_ops *ops; }; struct vm_area_struct; struct page; struct kiocb; struct sockaddr; struct msghdr; struct module; struct proto_ops { int family; struct module *owner; int (*release) (struct socket *sock); int (*bind) (struct socket *sock, struct sockaddr *myaddr, int sockaddr_len); int (*connect) (struct socket *sock, struct sockaddr *vaddr, int sockaddr_len, int flags); int (*socketpair)(struct socket *sock1, struct socket *sock2); int (*accept) (struct socket *sock, struct socket *newsock, int flags); int (*getname) (struct socket *sock, struct sockaddr *addr, int *sockaddr_len, int peer); unsigned int (*poll) (struct file *file, struct socket *sock, struct poll_table_struct *wait); int (*ioctl) (struct socket *sock, unsigned int cmd, unsigned long arg); #ifdef CONFIG_COMPAT int (*compat_ioctl) (struct socket *sock, unsigned int cmd, unsigned long arg); #endif int (*listen) (struct socket *sock, int len); int (*shutdown) (struct socket *sock, int flags); int (*setsockopt)(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen); int (*getsockopt)(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen); #ifdef CONFIG_COMPAT int (*compat_setsockopt)(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen); int (*compat_getsockopt)(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen); #endif int (*sendmsg) (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t total_len); int (*recvmsg) (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t total_len, int flags); int (*mmap) (struct file *file, struct socket *sock, struct vm_area_struct * vma); ssize_t (*sendpage) (struct socket *sock, struct page *page, int offset, size_t size, int flags); ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); void (*set_peek_off)(struct sock *sk, int val); }; #define DECLARE_SOCKADDR(type, dst, src) \ type dst = ({ __sockaddr_check_size(sizeof(*dst)); (type) src; }) struct net_proto_family { int family; int (*create)(struct net *net, struct socket *sock, int protocol, int kern); struct module *owner; }; struct iovec; struct kvec; enum { SOCK_WAKE_IO, SOCK_WAKE_WAITD, SOCK_WAKE_SPACE, SOCK_WAKE_URG, }; extern int sock_wake_async(struct socket *sk, int how, int band); extern int sock_register(const struct net_proto_family *fam); extern void sock_unregister(int family); extern int __sock_create(struct net *net, int family, int type, int proto, struct socket **res, int kern); extern int sock_create(int family, int type, int proto, struct socket **res); extern int sock_create_kern(int family, int type, int proto, struct socket **res); extern int sock_create_lite(int family, int type, int proto, struct socket **res); extern void sock_release(struct socket *sock); extern int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len); extern int sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int flags); extern struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname); extern struct socket *sockfd_lookup(int fd, int *err); extern struct socket *sock_from_file(struct file *file, int *err); #define sockfd_put(sock) fput(sock->file) extern int net_ratelimit(void); #define net_ratelimited_function(function, ...) \ do { \ if (net_ratelimit()) \ function(__VA_ARGS__); \ } while (0) #define net_emerg_ratelimited(fmt, ...) \ net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__) #define net_alert_ratelimited(fmt, ...) \ net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__) #define net_crit_ratelimited(fmt, ...) \ net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__) #define net_err_ratelimited(fmt, ...) \ net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__) #define net_notice_ratelimited(fmt, ...) \ net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__) #define net_warn_ratelimited(fmt, ...) \ net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__) #define net_info_ratelimited(fmt, ...) \ net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__) #define net_dbg_ratelimited(fmt, ...) \ net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__) #define net_random() prandom_u32() #define net_srandom(seed) prandom_seed((__force u32)(seed)) extern int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t len); extern int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t len, int flags); extern int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen); extern int kernel_listen(struct socket *sock, int backlog); extern int kernel_accept(struct socket *sock, struct socket **newsock, int flags); extern int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, int flags); extern int kernel_getsockname(struct socket *sock, struct sockaddr *addr, int *addrlen); extern int kernel_getpeername(struct socket *sock, struct sockaddr *addr, int *addrlen); extern int kernel_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen); extern int kernel_setsockopt(struct socket *sock, int level, int optname, char *optval, unsigned int optlen); extern int kernel_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags); extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg); extern int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how); #define MODULE_ALIAS_NETPROTO(proto) \ MODULE_ALIAS("net-pf-" __stringify(proto)) #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \ MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto)) #define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \ MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \ "-type-" __stringify(type)) #define MODULE_ALIAS_NET_PF_PROTO_NAME(pf, proto, name) \ MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \ name) #endif /* _LINUX_NET_H */


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