diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 1076 |
1 files changed, 938 insertions, 138 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 96ec801240..71ccbd9c5e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -101,6 +101,11 @@ int __clone2(int (*fn)(void *), void *child_stack_base, #include <linux/route.h> #include <linux/filter.h> #include <linux/blkpg.h> +#include <linux/netlink.h> +#ifdef CONFIG_RTNETLINK +#include <linux/rtnetlink.h> +#endif +#include <linux/audit.h> #include "linux_loop.h" #include "uname.h" @@ -119,6 +124,10 @@ int __clone2(int (*fn)(void *), void *child_stack_base, #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) +/* This is the size of the host kernel's sigset_t, needed where we make + * direct system calls that take a sigset_t pointer and a size. + */ +#define SIGSET_T_SIZE (_NSIG / 8) #undef _syscall0 #undef _syscall1 @@ -182,8 +191,6 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ #define __NR_sys_getpriority __NR_getpriority #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo #define __NR_sys_syslog __NR_syslog -#define __NR_sys_tgkill __NR_tgkill -#define __NR_sys_tkill __NR_tkill #define __NR_sys_futex __NR_futex #define __NR_sys_inotify_init __NR_inotify_init #define __NR_sys_inotify_add_watch __NR_inotify_add_watch @@ -221,12 +228,6 @@ _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, #endif _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo) _syscall3(int,sys_syslog,int,type,char*,bufp,int,len) -#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) -_syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig) -#endif -#if defined(TARGET_NR_tkill) && defined(__NR_tkill) -_syscall2(int,sys_tkill,int,tid,int,sig) -#endif #ifdef __NR_exit_group _syscall1(int,exit_group,int,error_code) #endif @@ -304,6 +305,14 @@ static TargetFdTrans **target_fd_trans; static unsigned int target_fd_max; +static TargetFdDataFunc fd_trans_target_to_host_data(int fd) +{ + if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) { + return target_fd_trans[fd]->target_to_host_data; + } + return NULL; +} + static TargetFdDataFunc fd_trans_host_to_target_data(int fd) { if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) { @@ -420,16 +429,6 @@ static int sys_inotify_init1(int flags) #undef TARGET_NR_inotify_rm_watch #endif /* CONFIG_INOTIFY */ -#if defined(TARGET_NR_ppoll) -#ifndef __NR_ppoll -# define __NR_ppoll -1 -#endif -#define __NR_sys_ppoll __NR_ppoll -_syscall5(int, sys_ppoll, struct pollfd *, fds, nfds_t, nfds, - struct timespec *, timeout, const sigset_t *, sigmask, - size_t, sigsetsize) -#endif - #if defined(TARGET_NR_prlimit64) #ifndef __NR_prlimit64 # define __NR_prlimit64 -1 @@ -631,8 +630,15 @@ static inline int is_error(abi_long ret) return (abi_ulong)ret >= (abi_ulong)(-4096); } -char *target_strerror(int err) +const char *target_strerror(int err) { + if (err == TARGET_ERESTARTSYS) { + return "To be restarted"; + } + if (err == TARGET_QEMU_ESIGRETURN) { + return "Successful exit from sigreturn"; + } + if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { return NULL; } @@ -697,8 +703,87 @@ safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ fd_set *, exceptfds, struct timespec *, timeout, void *, sig) +safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, + struct timespec *, tsp, const sigset_t *, sigmask, + size_t, sigsetsize) +safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, + int, maxevents, int, timeout, const sigset_t *, sigmask, + size_t, sigsetsize) safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ const struct timespec *,timeout,int *,uaddr2,int,val3) +safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) +safe_syscall2(int, kill, pid_t, pid, int, sig) +safe_syscall2(int, tkill, int, tid, int, sig) +safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig) +safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt) +safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt) +safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr, + socklen_t, addrlen) +safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len, + int, flags, const struct sockaddr *, addr, socklen_t, addrlen) +safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, + int, flags, struct sockaddr *, addr, socklen_t *, addrlen) +safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) +safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) +safe_syscall2(int, flock, int, fd, int, operation) +safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, + const struct timespec *, uts, size_t, sigsetsize) +safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, + int, flags) +safe_syscall2(int, nanosleep, const struct timespec *, req, + struct timespec *, rem) +#ifdef TARGET_NR_clock_nanosleep +safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, + const struct timespec *, req, struct timespec *, rem) +#endif +#ifdef __NR_msgsnd +safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz, + int, flags) +safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, + long, msgtype, int, flags) +safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, + unsigned, nsops, const struct timespec *, timeout) +#else +/* This host kernel architecture uses a single ipc syscall; fake up + * wrappers for the sub-operations to hide this implementation detail. + * Annoyingly we can't include linux/ipc.h to get the constant definitions + * for the call parameter because some structs in there conflict with the + * sys/ipc.h ones. So we just define them here, and rely on them being + * the same for all host architectures. + */ +#define Q_SEMTIMEDOP 4 +#define Q_MSGSND 11 +#define Q_MSGRCV 12 +#define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP)) + +safe_syscall6(int, ipc, int, call, long, first, long, second, long, third, + void *, ptr, long, fifth) +static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags) +{ + return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0); +} +static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags) +{ + return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type); +} +static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops, + const struct timespec *timeout) +{ + return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops, + (long)timeout); +} +#endif +#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) +safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, + size_t, len, unsigned, prio, const struct timespec *, timeout) +safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, + size_t, len, unsigned *, prio, const struct timespec *, timeout) +#endif +/* We do ioctl like this rather than via safe_syscall3 to preserve the + * "third argument might be integer or pointer or not present" behaviour of + * the libc function. + */ +#define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) static inline int host_to_target_sock_type(int host_type) { @@ -1261,7 +1346,13 @@ static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, memcpy(addr, target_saddr, len); addr->sa_family = sa_family; - if (sa_family == AF_PACKET) { + if (sa_family == AF_NETLINK) { + struct sockaddr_nl *nladdr; + + nladdr = (struct sockaddr_nl *)addr; + nladdr->nl_pid = tswap32(nladdr->nl_pid); + nladdr->nl_groups = tswap32(nladdr->nl_groups); + } else if (sa_family == AF_PACKET) { struct target_sockaddr_ll *lladdr; lladdr = (struct target_sockaddr_ll *)addr; @@ -1284,6 +1375,11 @@ static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, return -TARGET_EFAULT; memcpy(target_saddr, addr, len); target_saddr->sa_family = tswap16(addr->sa_family); + if (addr->sa_family == AF_NETLINK) { + struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr; + target_nl->nl_pid = tswap32(target_nl->nl_pid); + target_nl->nl_groups = tswap32(target_nl->nl_groups); + } unlock_user(target_saddr, target_addr, len); return 0; @@ -1515,6 +1611,551 @@ static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, return 0; } +static void tswap_nlmsghdr(struct nlmsghdr *nlh) +{ + nlh->nlmsg_len = tswap32(nlh->nlmsg_len); + nlh->nlmsg_type = tswap16(nlh->nlmsg_type); + nlh->nlmsg_flags = tswap16(nlh->nlmsg_flags); + nlh->nlmsg_seq = tswap32(nlh->nlmsg_seq); + nlh->nlmsg_pid = tswap32(nlh->nlmsg_pid); +} + +static abi_long host_to_target_for_each_nlmsg(struct nlmsghdr *nlh, + size_t len, + abi_long (*host_to_target_nlmsg) + (struct nlmsghdr *)) +{ + uint32_t nlmsg_len; + abi_long ret; + + while (len > sizeof(struct nlmsghdr)) { + + nlmsg_len = nlh->nlmsg_len; + if (nlmsg_len < sizeof(struct nlmsghdr) || + nlmsg_len > len) { + break; + } + + switch (nlh->nlmsg_type) { + case NLMSG_DONE: + tswap_nlmsghdr(nlh); + return 0; + case NLMSG_NOOP: + break; + case NLMSG_ERROR: + { + struct nlmsgerr *e = NLMSG_DATA(nlh); + e->error = tswap32(e->error); + tswap_nlmsghdr(&e->msg); + tswap_nlmsghdr(nlh); + return 0; + } + default: + ret = host_to_target_nlmsg(nlh); + if (ret < 0) { + tswap_nlmsghdr(nlh); + return ret; + } + break; + } + tswap_nlmsghdr(nlh); + len -= NLMSG_ALIGN(nlmsg_len); + nlh = (struct nlmsghdr *)(((char*)nlh) + NLMSG_ALIGN(nlmsg_len)); + } + return 0; +} + +static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh, + size_t len, + abi_long (*target_to_host_nlmsg) + (struct nlmsghdr *)) +{ + int ret; + + while (len > sizeof(struct nlmsghdr)) { + if (tswap32(nlh->nlmsg_len) < sizeof(struct nlmsghdr) || + tswap32(nlh->nlmsg_len) > len) { + break; + } + tswap_nlmsghdr(nlh); + switch (nlh->nlmsg_type) { + case NLMSG_DONE: + return 0; + case NLMSG_NOOP: + break; + case NLMSG_ERROR: + { + struct nlmsgerr *e = NLMSG_DATA(nlh); + e->error = tswap32(e->error); + tswap_nlmsghdr(&e->msg); + } + default: + ret = target_to_host_nlmsg(nlh); + if (ret < 0) { + return ret; + } + } + len -= NLMSG_ALIGN(nlh->nlmsg_len); + nlh = (struct nlmsghdr *)(((char *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len)); + } + return 0; +} + +#ifdef CONFIG_RTNETLINK +static abi_long host_to_target_for_each_rtattr(struct rtattr *rtattr, + size_t len, + abi_long (*host_to_target_rtattr) + (struct rtattr *)) +{ + unsigned short rta_len; + abi_long ret; + + while (len > sizeof(struct rtattr)) { + rta_len = rtattr->rta_len; + if (rta_len < sizeof(struct rtattr) || + rta_len > len) { + break; + } + ret = host_to_target_rtattr(rtattr); + rtattr->rta_len = tswap16(rtattr->rta_len); + rtattr->rta_type = tswap16(rtattr->rta_type); + if (ret < 0) { + return ret; + } + len -= RTA_ALIGN(rta_len); + rtattr = (struct rtattr *)(((char *)rtattr) + RTA_ALIGN(rta_len)); + } + return 0; +} + +static abi_long host_to_target_data_link_rtattr(struct rtattr *rtattr) +{ + uint32_t *u32; + struct rtnl_link_stats *st; + struct rtnl_link_stats64 *st64; + struct rtnl_link_ifmap *map; + + switch (rtattr->rta_type) { + /* binary stream */ + case IFLA_ADDRESS: + case IFLA_BROADCAST: + /* string */ + case IFLA_IFNAME: + case IFLA_QDISC: + break; + /* uin8_t */ + case IFLA_OPERSTATE: + case IFLA_LINKMODE: + case IFLA_CARRIER: + case IFLA_PROTO_DOWN: + break; + /* uint32_t */ + case IFLA_MTU: + case IFLA_LINK: + case IFLA_WEIGHT: + case IFLA_TXQLEN: + case IFLA_CARRIER_CHANGES: + case IFLA_NUM_RX_QUEUES: + case IFLA_NUM_TX_QUEUES: + case IFLA_PROMISCUITY: + case IFLA_EXT_MASK: + case IFLA_LINK_NETNSID: + case IFLA_GROUP: + case IFLA_MASTER: + case IFLA_NUM_VF: + u32 = RTA_DATA(rtattr); + *u32 = tswap32(*u32); + break; + /* struct rtnl_link_stats */ + case IFLA_STATS: + st = RTA_DATA(rtattr); + st->rx_packets = tswap32(st->rx_packets); + st->tx_packets = tswap32(st->tx_packets); + st->rx_bytes = tswap32(st->rx_bytes); + st->tx_bytes = tswap32(st->tx_bytes); + st->rx_errors = tswap32(st->rx_errors); + st->tx_errors = tswap32(st->tx_errors); + st->rx_dropped = tswap32(st->rx_dropped); + st->tx_dropped = tswap32(st->tx_dropped); + st->multicast = tswap32(st->multicast); + st->collisions = tswap32(st->collisions); + + /* detailed rx_errors: */ + st->rx_length_errors = tswap32(st->rx_length_errors); + st->rx_over_errors = tswap32(st->rx_over_errors); + st->rx_crc_errors = tswap32(st->rx_crc_errors); + st->rx_frame_errors = tswap32(st->rx_frame_errors); + st->rx_fifo_errors = tswap32(st->rx_fifo_errors); + st->rx_missed_errors = tswap32(st->rx_missed_errors); + + /* detailed tx_errors */ + st->tx_aborted_errors = tswap32(st->tx_aborted_errors); + st->tx_carrier_errors = tswap32(st->tx_carrier_errors); + st->tx_fifo_errors = tswap32(st->tx_fifo_errors); + st->tx_heartbeat_errors = tswap32(st->tx_heartbeat_errors); + st->tx_window_errors = tswap32(st->tx_window_errors); + + /* for cslip etc */ + st->rx_compressed = tswap32(st->rx_compressed); + st->tx_compressed = tswap32(st->tx_compressed); + break; + /* struct rtnl_link_stats64 */ + case IFLA_STATS64: + st64 = RTA_DATA(rtattr); + st64->rx_packets = tswap64(st64->rx_packets); + st64->tx_packets = tswap64(st64->tx_packets); + st64->rx_bytes = tswap64(st64->rx_bytes); + st64->tx_bytes = tswap64(st64->tx_bytes); + st64->rx_errors = tswap64(st64->rx_errors); + st64->tx_errors = tswap64(st64->tx_errors); + st64->rx_dropped = tswap64(st64->rx_dropped); + st64->tx_dropped = tswap64(st64->tx_dropped); + st64->multicast = tswap64(st64->multicast); + st64->collisions = tswap64(st64->collisions); + + /* detailed rx_errors: */ + st64->rx_length_errors = tswap64(st64->rx_length_errors); + st64->rx_over_errors = tswap64(st64->rx_over_errors); + st64->rx_crc_errors = tswap64(st64->rx_crc_errors); + st64->rx_frame_errors = tswap64(st64->rx_frame_errors); + st64->rx_fifo_errors = tswap64(st64->rx_fifo_errors); + st64->rx_missed_errors = tswap64(st64->rx_missed_errors); + + /* detailed tx_errors */ + st64->tx_aborted_errors = tswap64(st64->tx_aborted_errors); + st64->tx_carrier_errors = tswap64(st64->tx_carrier_errors); + st64->tx_fifo_errors = tswap64(st64->tx_fifo_errors); + st64->tx_heartbeat_errors = tswap64(st64->tx_heartbeat_errors); + st64->tx_window_errors = tswap64(st64->tx_window_errors); + + /* for cslip etc */ + st64->rx_compressed = tswap64(st64->rx_compressed); + st64->tx_compressed = tswap64(st64->tx_compressed); + break; + /* struct rtnl_link_ifmap */ + case IFLA_MAP: + map = RTA_DATA(rtattr); + map->mem_start = tswap64(map->mem_start); + map->mem_end = tswap64(map->mem_end); + map->base_addr = tswap64(map->base_addr); + map->irq = tswap16(map->irq); + break; + /* nested */ + case IFLA_AF_SPEC: + case IFLA_LINKINFO: + /* FIXME: implement nested type */ + gemu_log("Unimplemented nested type %d\n", rtattr->rta_type); + break; + default: + gemu_log("Unknown host IFLA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr) +{ + uint32_t *u32; + struct ifa_cacheinfo *ci; + + switch (rtattr->rta_type) { + /* binary: depends on family type */ + case IFA_ADDRESS: + case IFA_LOCAL: + break; + /* string */ + case IFA_LABEL: + break; + /* u32 */ + case IFA_FLAGS: + case IFA_BROADCAST: + u32 = RTA_DATA(rtattr); + *u32 = tswap32(*u32); + break; + /* struct ifa_cacheinfo */ + case IFA_CACHEINFO: + ci = RTA_DATA(rtattr); + ci->ifa_prefered = tswap32(ci->ifa_prefered); + ci->ifa_valid = tswap32(ci->ifa_valid); + ci->cstamp = tswap32(ci->cstamp); + ci->tstamp = tswap32(ci->tstamp); + break; + default: + gemu_log("Unknown host IFA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static abi_long host_to_target_data_route_rtattr(struct rtattr *rtattr) +{ + uint32_t *u32; + switch (rtattr->rta_type) { + /* binary: depends on family type */ + case RTA_GATEWAY: + case RTA_DST: + case RTA_PREFSRC: + break; + /* u32 */ + case RTA_PRIORITY: + case RTA_TABLE: + case RTA_OIF: + u32 = RTA_DATA(rtattr); + *u32 = tswap32(*u32); + break; + default: + gemu_log("Unknown host RTA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static abi_long host_to_target_link_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + return host_to_target_for_each_rtattr(rtattr, rtattr_len, + host_to_target_data_link_rtattr); +} + +static abi_long host_to_target_addr_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + return host_to_target_for_each_rtattr(rtattr, rtattr_len, + host_to_target_data_addr_rtattr); +} + +static abi_long host_to_target_route_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + return host_to_target_for_each_rtattr(rtattr, rtattr_len, + host_to_target_data_route_rtattr); +} + +static abi_long host_to_target_data_route(struct nlmsghdr *nlh) +{ + uint32_t nlmsg_len; + struct ifinfomsg *ifi; + struct ifaddrmsg *ifa; + struct rtmsg *rtm; + + nlmsg_len = nlh->nlmsg_len; + switch (nlh->nlmsg_type) { + case RTM_NEWLINK: + case RTM_DELLINK: + case RTM_GETLINK: + ifi = NLMSG_DATA(nlh); + ifi->ifi_type = tswap16(ifi->ifi_type); + ifi->ifi_index = tswap32(ifi->ifi_index); + ifi->ifi_flags = tswap32(ifi->ifi_flags); + ifi->ifi_change = tswap32(ifi->ifi_change); + host_to_target_link_rtattr(IFLA_RTA(ifi), + nlmsg_len - NLMSG_LENGTH(sizeof(*ifi))); + break; + case RTM_NEWADDR: + case RTM_DELADDR: + case RTM_GETADDR: + ifa = NLMSG_DATA(nlh); + ifa->ifa_index = tswap32(ifa->ifa_index); + host_to_target_addr_rtattr(IFA_RTA(ifa), + nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); + break; + case RTM_NEWROUTE: + case RTM_DELROUTE: + case RTM_GETROUTE: + rtm = NLMSG_DATA(nlh); + rtm->rtm_flags = tswap32(rtm->rtm_flags); + host_to_target_route_rtattr(RTM_RTA(rtm), + nlmsg_len - NLMSG_LENGTH(sizeof(*rtm))); + break; + default: + return -TARGET_EINVAL; + } + return 0; +} + +static inline abi_long host_to_target_nlmsg_route(struct nlmsghdr *nlh, + size_t len) +{ + return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_route); +} + +static abi_long target_to_host_for_each_rtattr(struct rtattr *rtattr, + size_t len, + abi_long (*target_to_host_rtattr) + (struct rtattr *)) +{ + abi_long ret; + + while (len >= sizeof(struct rtattr)) { + if (tswap16(rtattr->rta_len) < sizeof(struct rtattr) || + tswap16(rtattr->rta_len) > len) { + break; + } + rtattr->rta_len = tswap16(rtattr->rta_len); + rtattr->rta_type = tswap16(rtattr->rta_type); + ret = target_to_host_rtattr(rtattr); + if (ret < 0) { + return ret; + } + len -= RTA_ALIGN(rtattr->rta_len); + rtattr = (struct rtattr *)(((char *)rtattr) + + RTA_ALIGN(rtattr->rta_len)); + } + return 0; +} + +static abi_long target_to_host_data_link_rtattr(struct rtattr *rtattr) +{ + switch (rtattr->rta_type) { + default: + gemu_log("Unknown target IFLA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr) +{ + switch (rtattr->rta_type) { + /* binary: depends on family type */ + case IFA_LOCAL: + case IFA_ADDRESS: + break; + default: + gemu_log("Unknown target IFA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr) +{ + uint32_t *u32; + switch (rtattr->rta_type) { + /* binary: depends on family type */ + case RTA_DST: + case RTA_SRC: + case RTA_GATEWAY: + break; + /* u32 */ + case RTA_OIF: + u32 = RTA_DATA(rtattr); + *u32 = tswap32(*u32); + break; + default: + gemu_log("Unknown target RTA type: %d\n", rtattr->rta_type); + break; + } + return 0; +} + +static void target_to_host_link_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + target_to_host_for_each_rtattr(rtattr, rtattr_len, + target_to_host_data_link_rtattr); +} + +static void target_to_host_addr_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + target_to_host_for_each_rtattr(rtattr, rtattr_len, + target_to_host_data_addr_rtattr); +} + +static void target_to_host_route_rtattr(struct rtattr *rtattr, + uint32_t rtattr_len) +{ + target_to_host_for_each_rtattr(rtattr, rtattr_len, + target_to_host_data_route_rtattr); +} + +static abi_long target_to_host_data_route(struct nlmsghdr *nlh) +{ + struct ifinfomsg *ifi; + struct ifaddrmsg *ifa; + struct rtmsg *rtm; + + switch (nlh->nlmsg_type) { + case RTM_GETLINK: + break; + case RTM_NEWLINK: + case RTM_DELLINK: + ifi = NLMSG_DATA(nlh); + ifi->ifi_type = tswap16(ifi->ifi_type); + ifi->ifi_index = tswap32(ifi->ifi_index); + ifi->ifi_flags = tswap32(ifi->ifi_flags); + ifi->ifi_change = tswap32(ifi->ifi_change); + target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*ifi))); + break; + case RTM_GETADDR: + case RTM_NEWADDR: + case RTM_DELADDR: + ifa = NLMSG_DATA(nlh); + ifa->ifa_index = tswap32(ifa->ifa_index); + target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*ifa))); + break; + case RTM_GETROUTE: + break; + case RTM_NEWROUTE: + case RTM_DELROUTE: + rtm = NLMSG_DATA(nlh); + rtm->rtm_flags = tswap32(rtm->rtm_flags); + target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*rtm))); + break; + default: + return -TARGET_EOPNOTSUPP; + } + return 0; +} + +static abi_long target_to_host_nlmsg_route(struct nlmsghdr *nlh, size_t len) +{ + return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_route); +} +#endif /* CONFIG_RTNETLINK */ + +static abi_long host_to_target_data_audit(struct nlmsghdr *nlh) +{ + switch (nlh->nlmsg_type) { + default: + gemu_log("Unknown host audit message type %d\n", + nlh->nlmsg_type); + return -TARGET_EINVAL; + } + return 0; +} + +static inline abi_long host_to_target_nlmsg_audit(struct nlmsghdr *nlh, + size_t len) +{ + return host_to_target_for_each_nlmsg(nlh, len, host_to_target_data_audit); +} + +static abi_long target_to_host_data_audit(struct nlmsghdr *nlh) +{ + switch (nlh->nlmsg_type) { + case AUDIT_USER: + case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG: + case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2: + break; + default: + gemu_log("Unknown target audit message type %d\n", + nlh->nlmsg_type); + return -TARGET_EINVAL; + } + + return 0; +} + +static abi_long target_to_host_nlmsg_audit(struct nlmsghdr *nlh, size_t len) +{ + return target_to_host_for_each_nlmsg(nlh, len, target_to_host_data_audit); +} + /* do_setsockopt() Must return target values and target errnos. */ static abi_long do_setsockopt(int sockfd, int level, int optname, abi_ulong optval_addr, socklen_t optlen) @@ -2165,6 +2806,38 @@ static TargetFdTrans target_packet_trans = { .target_to_host_addr = packet_target_to_host_sockaddr, }; +#ifdef CONFIG_RTNETLINK +static abi_long netlink_route_target_to_host(void *buf, size_t len) +{ + return target_to_host_nlmsg_route(buf, len); +} + +static abi_long netlink_route_host_to_target(void *buf, size_t len) +{ + return host_to_target_nlmsg_route(buf, len); +} + +static TargetFdTrans target_netlink_route_trans = { + .target_to_host_data = netlink_route_target_to_host, + .host_to_target_data = netlink_route_host_to_target, +}; +#endif /* CONFIG_RTNETLINK */ + +static abi_long netlink_audit_target_to_host(void *buf, size_t len) +{ + return target_to_host_nlmsg_audit(buf, len); +} + +static abi_long netlink_audit_host_to_target(void *buf, size_t len) +{ + return host_to_target_nlmsg_audit(buf, len); +} + +static TargetFdTrans target_netlink_audit_trans = { + .target_to_host_data = netlink_audit_target_to_host, + .host_to_target_data = netlink_audit_host_to_target, +}; + /* do_socket() Must return target values and target errnos. */ static abi_long do_socket(int domain, int type, int protocol) { @@ -2176,8 +2849,14 @@ static abi_long do_socket(int domain, int type, int protocol) return ret; } - if (domain == PF_NETLINK) - return -TARGET_EAFNOSUPPORT; + if (domain == PF_NETLINK && !( +#ifdef CONFIG_RTNETLINK + protocol == NETLINK_ROUTE || +#endif + protocol == NETLINK_KOBJECT_UEVENT || + protocol == NETLINK_AUDIT)) { + return -EPFNOSUPPORT; + } if (domain == AF_PACKET || (domain == AF_INET && type == SOCK_PACKET)) { @@ -2192,6 +2871,22 @@ static abi_long do_socket(int domain, int type, int protocol) * if socket type is SOCK_PACKET, bind by name */ fd_trans_register(ret, &target_packet_trans); + } else if (domain == PF_NETLINK) { + switch (protocol) { +#ifdef CONFIG_RTNETLINK + case NETLINK_ROUTE: + fd_trans_register(ret, &target_netlink_route_trans); + break; +#endif + case NETLINK_KOBJECT_UEVENT: + /* nothing to do: messages are strings */ + break; + case NETLINK_AUDIT: + fd_trans_register(ret, &target_netlink_audit_trans); + break; + default: + g_assert_not_reached(); + } } } return ret; @@ -2234,7 +2929,7 @@ static abi_long do_connect(int sockfd, abi_ulong target_addr, if (ret) return ret; - return get_errno(connect(sockfd, addr, addrlen)); + return get_errno(safe_connect(sockfd, addr, addrlen)); } /* do_sendrecvmsg_locked() Must return target values and target errnos. */ @@ -2276,14 +2971,25 @@ static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, msg.msg_iov = vec; if (send) { - ret = target_to_host_cmsg(&msg, msgp); - if (ret == 0) - ret = get_errno(sendmsg(fd, &msg, flags)); + if (fd_trans_target_to_host_data(fd)) { + ret = fd_trans_target_to_host_data(fd)(msg.msg_iov->iov_base, + msg.msg_iov->iov_len); + } else { + ret = target_to_host_cmsg(&msg, msgp); + } + if (ret == 0) { + ret = get_errno(safe_sendmsg(fd, &msg, flags)); + } } else { - ret = get_errno(recvmsg(fd, &msg, flags)); + ret = get_errno(safe_recvmsg(fd, &msg, flags)); if (!is_error(ret)) { len = ret; - ret = host_to_target_cmsg(msgp, &msg); + if (fd_trans_host_to_target_data(fd)) { + ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, + msg.msg_iov->iov_len); + } else { + ret = host_to_target_cmsg(msgp, &msg); + } if (!is_error(ret)) { msgp->msg_namelen = tswap32(msg.msg_namelen); if (msg.msg_name != NULL) { @@ -2369,19 +3075,6 @@ static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, return ret; } -/* If we don't have a system accept4() then just call accept. - * The callsites to do_accept4() will ensure that they don't - * pass a non-zero flags argument in this config. - */ -#ifndef CONFIG_ACCEPT4 -static inline int accept4(int sockfd, struct sockaddr *addr, - socklen_t *addrlen, int flags) -{ - assert(flags == 0); - return accept(sockfd, addr, addrlen); -} -#endif - /* do_accept4() Must return target values and target errnos. */ static abi_long do_accept4(int fd, abi_ulong target_addr, abi_ulong target_addrlen_addr, int flags) @@ -2394,7 +3087,7 @@ static abi_long do_accept4(int fd, abi_ulong target_addr, host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); if (target_addr == 0) { - return get_errno(accept4(fd, NULL, NULL, host_flags)); + return get_errno(safe_accept4(fd, NULL, NULL, host_flags)); } /* linux returns EINVAL if addrlen pointer is invalid */ @@ -2410,7 +3103,7 @@ static abi_long do_accept4(int fd, abi_ulong target_addr, addr = alloca(addrlen); - ret = get_errno(accept4(fd, addr, &addrlen, host_flags)); + ret = get_errno(safe_accept4(fd, addr, &addrlen, host_flags)); if (!is_error(ret)) { host_to_target_sockaddr(target_addr, addr, addrlen); if (put_user_u32(addrlen, target_addrlen_addr)) @@ -2510,6 +3203,13 @@ static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, host_msg = lock_user(VERIFY_READ, msg, len, 1); if (!host_msg) return -TARGET_EFAULT; + if (fd_trans_target_to_host_data(fd)) { + ret = fd_trans_target_to_host_data(fd)(host_msg, len); + if (ret < 0) { + unlock_user(host_msg, msg, 0); + return ret; + } + } if (target_addr) { addr = alloca(addrlen+1); ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen); @@ -2517,9 +3217,9 @@ static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, unlock_user(host_msg, msg, 0); return ret; } - ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen)); + ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen)); } else { - ret = get_errno(send(fd, host_msg, len, flags)); + ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0)); } unlock_user(host_msg, msg, 0); return ret; @@ -2548,10 +3248,11 @@ static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, goto fail; } addr = alloca(addrlen); - ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen)); + ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, + addr, &addrlen)); } else { addr = NULL; /* To keep compiler quiet. */ - ret = get_errno(qemu_recv(fd, host_msg, len, flags)); + ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0)); } if (!is_error(ret)) { if (target_addr) { @@ -2989,7 +3690,7 @@ static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) if (target_to_host_sembuf(sops, ptr, nsops)) return -TARGET_EFAULT; - return get_errno(semop(semid, sops, nsops)); + return get_errno(safe_semtimedop(semid, sops, nsops, NULL)); } struct target_msqid_ds @@ -3144,7 +3845,7 @@ static inline abi_long do_msgsnd(int msqid, abi_long msgp, } host_mb->mtype = (abi_long) tswapal(target_mb->mtype); memcpy(host_mb->mtext, target_mb->mtext, msgsz); - ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg)); + ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg)); g_free(host_mb); unlock_user_struct(target_mb, msgp, 0); @@ -3172,7 +3873,7 @@ static inline abi_long do_msgrcv(int msqid, abi_long msgp, ret = -TARGET_ENOMEM; goto end; } - ret = get_errno(msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); + ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); if (ret > 0) { abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); @@ -3588,7 +4289,7 @@ static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, memcpy(fm, buf_temp, sizeof(struct fiemap)); free_fm = 1; } - ret = get_errno(ioctl(fd, ie->host_cmd, fm)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm)); if (!is_error(ret)) { target_size_out = target_size_in; /* An extent_count of 0 means we were only counting the extents @@ -3678,7 +4379,7 @@ static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, host_ifconf->ifc_len = host_ifc_len; host_ifconf->ifc_buf = host_ifc_buf; - ret = get_errno(ioctl(fd, ie->host_cmd, host_ifconf)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf)); if (!is_error(ret)) { /* convert host ifc_len to target ifc_len */ @@ -3807,7 +4508,7 @@ static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, } unlock_user(argptr, guest_data, 0); - ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); if (!is_error(ret)) { guest_data = arg + host_dm->data_start; guest_data_size = host_dm->data_size - host_dm->data_start; @@ -3988,7 +4689,7 @@ static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, /* Swizzle the data pointer to our local copy and call! */ host_blkpg->data = &host_part; - ret = get_errno(ioctl(fd, ie->host_cmd, host_blkpg)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg)); out: return ret; @@ -4049,7 +4750,7 @@ static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, } unlock_user(argptr, arg, 0); - ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); if (*host_rt_dev_ptr != 0) { unlock_user((void *)*host_rt_dev_ptr, *target_rt_dev_ptr, 0); @@ -4061,7 +4762,7 @@ static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, int cmd, abi_long arg) { int sig = target_to_host_signal(arg); - return get_errno(ioctl(fd, ie->host_cmd, sig)); + return get_errno(safe_ioctl(fd, ie->host_cmd, sig)); } static IOCTLEntry ioctl_entries[] = { @@ -4105,18 +4806,18 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg) switch(arg_type[0]) { case TYPE_NULL: /* no argument */ - ret = get_errno(ioctl(fd, ie->host_cmd)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd)); break; case TYPE_PTRVOID: case TYPE_INT: - ret = get_errno(ioctl(fd, ie->host_cmd, arg)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg)); break; case TYPE_PTR: arg_type++; target_size = thunk_type_size(arg_type, 0); switch(ie->access) { case IOC_R: - ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); if (!is_error(ret)) { argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); if (!argptr) @@ -4131,7 +4832,7 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg) return -TARGET_EFAULT; thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); unlock_user(argptr, arg, 0); - ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); break; default: case IOC_RW: @@ -4140,7 +4841,7 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg) return -TARGET_EFAULT; thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); unlock_user(argptr, arg, 0); - ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp)); if (!is_error(ret)) { argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); if (!argptr) @@ -4741,6 +5442,7 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, new_cpu->opaque = ts; ts->bprm = parent_ts->bprm; ts->info = parent_ts->info; + ts->signal_mask = parent_ts->signal_mask; nptl_flags = flags; flags &= ~CLONE_NPTL_FLAGS2; @@ -4795,6 +5497,11 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) { return -TARGET_EINVAL; } + + if (block_signals()) { + return -TARGET_ERESTARTSYS; + } + fork_start(); ret = fork(); if (ret == 0) { @@ -5993,8 +6700,12 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, However in threaded applictions it is used for thread termination, and _exit_group is used for application termination. Do thread termination if we have more then one thread. */ - /* FIXME: This probably breaks if a signal arrives. We should probably - be disabling signals. */ + + if (block_signals()) { + ret = -TARGET_ERESTARTSYS; + break; + } + if (CPU_NEXT(first_cpu)) { TaskState *ts; @@ -6412,7 +7123,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_pause /* not on alpha */ case TARGET_NR_pause: - ret = get_errno(pause()); + if (!block_signals()) { + sigsuspend(&((TaskState *)cpu->opaque)->signal_mask); + } + ret = -TARGET_EINTR; break; #endif #ifdef TARGET_NR_utime @@ -6515,7 +7229,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = 0; break; case TARGET_NR_kill: - ret = get_errno(kill(arg1, target_to_host_signal(arg2))); + ret = get_errno(safe_kill(arg1, target_to_host_signal(arg2))); break; #ifdef TARGET_NR_rename case TARGET_NR_rename: @@ -6836,9 +7550,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { sigset_t cur_set; abi_ulong target_set; - do_sigprocmask(0, NULL, &cur_set); - host_to_target_old_sigset(&target_set, &cur_set); - ret = target_set; + ret = do_sigprocmask(0, NULL, &cur_set); + if (!ret) { + host_to_target_old_sigset(&target_set, &cur_set); + ret = target_set; + } } break; #endif @@ -6847,12 +7563,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { sigset_t set, oset, cur_set; abi_ulong target_set = arg1; - do_sigprocmask(0, NULL, &cur_set); + /* We only have one word of the new mask so we must read + * the rest of it with do_sigprocmask() and OR in this word. + * We are guaranteed that a do_sigprocmask() that only queries + * the signal mask will not fail. + */ + ret = do_sigprocmask(0, NULL, &cur_set); + assert(!ret); target_to_host_old_sigset(&set, &target_set); sigorset(&set, &set, &cur_set); - do_sigprocmask(SIG_SETMASK, &set, &oset); - host_to_target_old_sigset(&target_set, &oset); - ret = target_set; + ret = do_sigprocmask(SIG_SETMASK, &set, &oset); + if (!ret) { + host_to_target_old_sigset(&target_set, &oset); + ret = target_set; + } } break; #endif @@ -6881,7 +7605,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, mask = arg2; target_to_host_old_sigset(&set, &mask); - ret = get_errno(do_sigprocmask(how, &set, &oldset)); + ret = do_sigprocmask(how, &set, &oldset); if (!is_error(ret)) { host_to_target_old_sigset(&mask, &oldset); ret = mask; @@ -6915,7 +7639,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, how = 0; set_ptr = NULL; } - ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); + ret = do_sigprocmask(how, set_ptr, &oldset); if (!is_error(ret) && arg3) { if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) goto efault; @@ -6955,7 +7679,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, how = 0; set_ptr = NULL; } - ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); + ret = do_sigprocmask(how, set_ptr, &oldset); if (!is_error(ret) && arg3) { if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) goto efault; @@ -6993,28 +7717,36 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_sigsuspend case TARGET_NR_sigsuspend: { - sigset_t set; + TaskState *ts = cpu->opaque; #if defined(TARGET_ALPHA) abi_ulong mask = arg1; - target_to_host_old_sigset(&set, &mask); + target_to_host_old_sigset(&ts->sigsuspend_mask, &mask); #else if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) goto efault; - target_to_host_old_sigset(&set, p); + target_to_host_old_sigset(&ts->sigsuspend_mask, p); unlock_user(p, arg1, 0); #endif - ret = get_errno(sigsuspend(&set)); + ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, + SIGSET_T_SIZE)); + if (ret != -TARGET_ERESTARTSYS) { + ts->in_sigsuspend = 1; + } } break; #endif case TARGET_NR_rt_sigsuspend: { - sigset_t set; + TaskState *ts = cpu->opaque; if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) goto efault; - target_to_host_sigset(&set, p); + target_to_host_sigset(&ts->sigsuspend_mask, p); unlock_user(p, arg1, 0); - ret = get_errno(sigsuspend(&set)); + ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, + SIGSET_T_SIZE)); + if (ret != -TARGET_ERESTARTSYS) { + ts->in_sigsuspend = 1; + } } break; case TARGET_NR_rt_sigtimedwait: @@ -7033,7 +7765,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } else { puts = NULL; } - ret = get_errno(sigtimedwait(&set, &uinfo, puts)); + ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts, + SIGSET_T_SIZE)); if (!is_error(ret)) { if (arg2) { p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), @@ -7060,11 +7793,19 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #ifdef TARGET_NR_sigreturn case TARGET_NR_sigreturn: - ret = do_sigreturn(cpu_env); + if (block_signals()) { + ret = -TARGET_ERESTARTSYS; + } else { + ret = do_sigreturn(cpu_env); + } break; #endif case TARGET_NR_rt_sigreturn: - ret = do_rt_sigreturn(cpu_env); + if (block_signals()) { + ret = -TARGET_ERESTARTSYS; + } else { + ret = do_rt_sigreturn(cpu_env); + } break; case TARGET_NR_sethostname: if (!(p = lock_user_string(arg1))) @@ -7221,7 +7962,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, /* Extract the two packed args for the sigset */ if (arg6) { sig_ptr = &sig; - sig.size = _NSIG / 8; + sig.size = SIGSET_T_SIZE; arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); if (!arg7) { @@ -7594,11 +8335,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_accept4 case TARGET_NR_accept4: -#ifdef CONFIG_ACCEPT4 ret = do_accept4(arg1, arg2, arg3, arg4); -#else - goto unimplemented; -#endif break; #endif #ifdef TARGET_NR_bind @@ -8229,7 +8966,6 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { struct target_pollfd *target_pfd; unsigned int nfds = arg2; - int timeout = arg3; struct pollfd *pfd; unsigned int i; @@ -8249,8 +8985,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } } + switch (num) { # ifdef TARGET_NR_ppoll - if (num == TARGET_NR_ppoll) { + case TARGET_NR_ppoll: + { struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; target_sigset_t *target_set; sigset_t _set, *set = &_set; @@ -8275,7 +9013,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, set = NULL; } - ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, set, _NSIG/8)); + ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, + set, SIGSET_T_SIZE)); if (!is_error(ret) && arg3) { host_to_target_timespec(arg3, timeout_ts); @@ -8283,9 +9022,30 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, if (arg4) { unlock_user(target_set, arg4, 0); } - } else + break; + } # endif - ret = get_errno(poll(pfd, nfds, timeout)); +# ifdef TARGET_NR_poll + case TARGET_NR_poll: + { + struct timespec ts, *pts; + + if (arg3 >= 0) { + /* Convert ms to secs, ns */ + ts.tv_sec = arg3 / 1000; + ts.tv_nsec = (arg3 % 1000) * 1000000LL; + pts = &ts; + } else { + /* -ve poll() timeout means "infinite" */ + pts = NULL; + } + ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); + break; + } +# endif + default: + g_assert_not_reached(); + } if (!is_error(ret)) { for(i = 0; i < nfds; i++) { @@ -8299,13 +9059,13 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_flock: /* NOTE: the flock constant seems to be the same for every Linux platform */ - ret = get_errno(flock(arg1, arg2)); + ret = get_errno(safe_flock(arg1, arg2)); break; case TARGET_NR_readv: { struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); if (vec != NULL) { - ret = get_errno(readv(arg1, vec, arg3)); + ret = get_errno(safe_readv(arg1, vec, arg3)); unlock_iovec(vec, arg2, arg3, 1); } else { ret = -host_to_target_errno(errno); @@ -8316,7 +9076,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); if (vec != NULL) { - ret = get_errno(writev(arg1, vec, arg3)); + ret = get_errno(safe_writev(arg1, vec, arg3)); unlock_iovec(vec, arg2, arg3, 0); } else { ret = -host_to_target_errno(errno); @@ -8475,7 +9235,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { struct timespec req, rem; target_to_host_timespec(&req, arg1); - ret = get_errno(nanosleep(&req, &rem)); + ret = get_errno(safe_nanosleep(&req, &rem)); if (is_error(ret) && arg2) { host_to_target_timespec(arg2, &rem); } @@ -9117,9 +9877,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } mask = arg2; target_to_host_old_sigset(&set, &mask); - do_sigprocmask(how, &set, &oldset); - host_to_target_old_sigset(&mask, &oldset); - ret = mask; + ret = do_sigprocmask(how, &set, &oldset); + if (!ret) { + host_to_target_old_sigset(&mask, &oldset); + ret = mask; + } } break; #endif @@ -9287,18 +10049,56 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_arm_fadvise64_64 case TARGET_NR_arm_fadvise64_64: - { - /* - * arm_fadvise64_64 looks like fadvise64_64 but - * with different argument order - */ - abi_long temp; - temp = arg3; - arg3 = arg4; - arg4 = temp; - } + /* arm_fadvise64_64 looks like fadvise64_64 but + * with different argument order: fd, advice, offset, len + * rather than the usual fd, offset, len, advice. + * Note that offset and len are both 64-bit so appear as + * pairs of 32-bit registers. + */ + ret = posix_fadvise(arg1, target_offset64(arg3, arg4), + target_offset64(arg5, arg6), arg2); + ret = -host_to_target_errno(ret); + break; +#endif + +#if TARGET_ABI_BITS == 32 + +#ifdef TARGET_NR_fadvise64_64 + case TARGET_NR_fadvise64_64: + /* 6 args: fd, offset (high, low), len (high, low), advice */ + if (regpairs_aligned(cpu_env)) { + /* offset is in (3,4), len in (5,6) and advice in 7 */ + arg2 = arg3; + arg3 = arg4; + arg4 = arg5; + arg5 = arg6; + arg6 = arg7; + } + ret = -host_to_target_errno(posix_fadvise(arg1, + target_offset64(arg2, arg3), + target_offset64(arg4, arg5), + arg6)); + break; +#endif + +#ifdef TARGET_NR_fadvise64 + case TARGET_NR_fadvise64: + /* 5 args: fd, offset (high, low), len, advice */ + if (regpairs_aligned(cpu_env)) { + /* offset is in (3,4), len in 5 and advice in 6 */ + arg2 = arg3; + arg3 = arg4; + arg4 = arg5; + arg5 = arg6; + } + ret = -host_to_target_errno(posix_fadvise(arg1, + target_offset64(arg2, arg3), + arg4, arg5)); + break; #endif -#if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_arm_fadvise64_64) || defined(TARGET_NR_fadvise64) + +#else /* not a 32-bit ABI */ +#if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64) #ifdef TARGET_NR_fadvise64_64 case TARGET_NR_fadvise64_64: #endif @@ -9314,9 +10114,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, default: break; } #endif - ret = -posix_fadvise(arg1, arg2, arg3, arg4); - break; + ret = -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4)); + break; #endif +#endif /* end of 64-bit ABI fadvise handling */ + #ifdef TARGET_NR_madvise case TARGET_NR_madvise: /* A straight passthrough may not be safe because qemu sometimes @@ -9701,14 +10503,15 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { struct timespec ts; target_to_host_timespec(&ts, arg3); - ret = get_errno(clock_nanosleep(arg1, arg2, &ts, arg4 ? &ts : NULL)); + ret = get_errno(safe_clock_nanosleep(arg1, arg2, + &ts, arg4 ? &ts : NULL)); if (arg4) host_to_target_timespec(arg4, &ts); #if defined(TARGET_PPC) /* clock_nanosleep is odd in that it returns positive errno values. * On PPC, CR0 bit 3 should be set in such a situation. */ - if (ret) { + if (ret && ret != -TARGET_ERESTARTSYS) { ((CPUPPCState *)cpu_env)->crf[0] |= 1; } #endif @@ -9722,18 +10525,14 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif -#if defined(TARGET_NR_tkill) && defined(__NR_tkill) case TARGET_NR_tkill: - ret = get_errno(sys_tkill((int)arg1, target_to_host_signal(arg2))); + ret = get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2))); break; -#endif -#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) case TARGET_NR_tgkill: - ret = get_errno(sys_tgkill((int)arg1, (int)arg2, + ret = get_errno(safe_tgkill((int)arg1, (int)arg2, target_to_host_signal(arg3))); - break; -#endif + break; #ifdef TARGET_NR_set_robust_list case TARGET_NR_set_robust_list: @@ -9835,11 +10634,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, p = lock_user (VERIFY_READ, arg2, arg3, 1); if (arg5 != 0) { target_to_host_timespec(&ts, arg5); - ret = get_errno(mq_timedsend(arg1, p, arg3, arg4, &ts)); + ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts)); host_to_target_timespec(arg5, &ts); + } else { + ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL)); } - else - ret = get_errno(mq_send(arg1, p, arg3, arg4)); unlock_user (p, arg2, arg3); } break; @@ -9852,11 +10651,13 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, p = lock_user (VERIFY_READ, arg2, arg3, 1); if (arg5 != 0) { target_to_host_timespec(&ts, arg5); - ret = get_errno(mq_timedreceive(arg1, p, arg3, &prio, &ts)); + ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, + &prio, &ts)); host_to_target_timespec(arg5, &ts); + } else { + ret = get_errno(safe_mq_timedreceive(arg1, p, arg3, + &prio, NULL)); } - else - ret = get_errno(mq_receive(arg1, p, arg3, &prio)); unlock_user (p, arg2, arg3); if (arg4 != 0) put_user_u32(prio, arg4); @@ -10043,14 +10844,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } #endif -#if defined(TARGET_NR_epoll_pwait) && defined(CONFIG_EPOLL_PWAIT) -#define IMPLEMENT_EPOLL_PWAIT -#endif -#if defined(TARGET_NR_epoll_wait) || defined(IMPLEMENT_EPOLL_PWAIT) +#if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait) #if defined(TARGET_NR_epoll_wait) case TARGET_NR_epoll_wait: #endif -#if defined(IMPLEMENT_EPOLL_PWAIT) +#if defined(TARGET_NR_epoll_pwait) case TARGET_NR_epoll_pwait: #endif { @@ -10069,7 +10867,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ep = alloca(maxevents * sizeof(struct epoll_event)); switch (num) { -#if defined(IMPLEMENT_EPOLL_PWAIT) +#if defined(TARGET_NR_epoll_pwait) case TARGET_NR_epoll_pwait: { target_sigset_t *target_set; @@ -10088,13 +10886,15 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, set = NULL; } - ret = get_errno(epoll_pwait(epfd, ep, maxevents, timeout, set)); + ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, + set, SIGSET_T_SIZE)); break; } #endif #if defined(TARGET_NR_epoll_wait) case TARGET_NR_epoll_wait: - ret = get_errno(epoll_wait(epfd, ep, maxevents, timeout)); + ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout, + NULL, 0)); break; #endif default: |