diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/compat.c | 30 | ||||
| -rw-r--r-- | net/ipv4/Kconfig | 6 | ||||
| -rw-r--r-- | net/ipv4/ipconfig.c | 2 | ||||
| -rw-r--r-- | net/socket.c | 25 |
4 files changed, 48 insertions, 15 deletions
diff --git a/net/compat.c b/net/compat.c index 47d99c784947..4bed96e84d9a 100644 --- a/net/compat.c +++ b/net/compat.c @@ -33,10 +33,10 @@ #include <linux/uaccess.h> #include <net/compat.h> -int get_compat_msghdr(struct msghdr *kmsg, - struct compat_msghdr __user *umsg, - struct sockaddr __user **save_addr, - struct iovec **iov) +int __get_compat_msghdr(struct msghdr *kmsg, + struct compat_msghdr __user *umsg, + struct sockaddr __user **save_addr, + compat_uptr_t *ptr, compat_size_t *len) { struct compat_msghdr msg; ssize_t err; @@ -79,10 +79,26 @@ int get_compat_msghdr(struct msghdr *kmsg, return -EMSGSIZE; kmsg->msg_iocb = NULL; + *ptr = msg.msg_iov; + *len = msg.msg_iovlen; + return 0; +} + +int get_compat_msghdr(struct msghdr *kmsg, + struct compat_msghdr __user *umsg, + struct sockaddr __user **save_addr, + struct iovec **iov) +{ + compat_uptr_t ptr; + compat_size_t len; + ssize_t err; + + err = __get_compat_msghdr(kmsg, umsg, save_addr, &ptr, &len); + if (err) + return err; - err = compat_import_iovec(save_addr ? READ : WRITE, - compat_ptr(msg.msg_iov), msg.msg_iovlen, - UIO_FASTIOV, iov, &kmsg->msg_iter); + err = compat_import_iovec(save_addr ? READ : WRITE, compat_ptr(ptr), + len, UIO_FASTIOV, iov, &kmsg->msg_iter); return err < 0 ? err : 0; } diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 6490b845e17b..25a8888826b8 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -129,7 +129,7 @@ config IP_PNP_DHCP If unsure, say Y. Note that if you want to use DHCP, a DHCP server must be operating on your network. Read - <file:Documentation/filesystems/nfs/nfsroot.txt> for details. + <file:Documentation/admin-guide/nfs/nfsroot.rst> for details. config IP_PNP_BOOTP bool "IP: BOOTP support" @@ -144,7 +144,7 @@ config IP_PNP_BOOTP does BOOTP itself, providing all necessary information on the kernel command line, you can say N here. If unsure, say Y. Note that if you want to use BOOTP, a BOOTP server must be operating on your network. - Read <file:Documentation/filesystems/nfs/nfsroot.txt> for details. + Read <file:Documentation/admin-guide/nfs/nfsroot.rst> for details. config IP_PNP_RARP bool "IP: RARP support" @@ -157,7 +157,7 @@ config IP_PNP_RARP older protocol which is being obsoleted by BOOTP and DHCP), say Y here. Note that if you want to use RARP, a RARP server must be operating on your network. Read - <file:Documentation/filesystems/nfs/nfsroot.txt> for details. + <file:Documentation/admin-guide/nfs/nfsroot.rst> for details. config NET_IPIP tristate "IP: tunneling" diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index 4438f6b12335..561f15b5a944 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -1621,7 +1621,7 @@ late_initcall(ip_auto_config); /* * Decode any IP configuration options in the "ip=" or "nfsaddrs=" kernel - * command line parameter. See Documentation/filesystems/nfs/nfsroot.txt. + * command line parameter. See Documentation/admin-guide/nfs/nfsroot.rst. */ static int __init ic_proto_name(char *name) { diff --git a/net/socket.c b/net/socket.c index 2eecf1517f76..2dd739fba866 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2228,10 +2228,10 @@ struct used_address { unsigned int name_len; }; -static int copy_msghdr_from_user(struct msghdr *kmsg, - struct user_msghdr __user *umsg, - struct sockaddr __user **save_addr, - struct iovec **iov) +int __copy_msghdr_from_user(struct msghdr *kmsg, + struct user_msghdr __user *umsg, + struct sockaddr __user **save_addr, + struct iovec __user **uiov, size_t *nsegs) { struct user_msghdr msg; ssize_t err; @@ -2273,6 +2273,23 @@ static int copy_msghdr_from_user(struct msghdr *kmsg, return -EMSGSIZE; kmsg->msg_iocb = NULL; + *uiov = msg.msg_iov; + *nsegs = msg.msg_iovlen; + return 0; +} + +static int copy_msghdr_from_user(struct msghdr *kmsg, + struct user_msghdr __user *umsg, + struct sockaddr __user **save_addr, + struct iovec **iov) +{ + struct user_msghdr msg; + ssize_t err; + + err = __copy_msghdr_from_user(kmsg, umsg, save_addr, &msg.msg_iov, + &msg.msg_iovlen); + if (err) + return err; err = import_iovec(save_addr ? READ : WRITE, msg.msg_iov, msg.msg_iovlen, |