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[91.157.170.157]) by smtp.gmail.com with ESMTPSA id h10sm4262823ljh.38.2016.06.28.12.13.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 28 Jun 2016 12:13:16 -0700 (PDT) From: riku.voipio@linaro.org To: qemu-devel@nongnu.org Date: Tue, 28 Jun 2016 22:12:46 +0300 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:4010:c07::235 Subject: [Qemu-devel] [PULL v2 12/24] linux-user: add socketcall() strace X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Laurent Vivier Signed-off-by: Laurent Vivier Signed-off-by: Riku Voipio Reviewed-by: Peter Maydell --- linux-user/strace.c | 549 ++++++++++++++++++++++++++++++++++++++++++++++ linux-user/strace.list | 2 +- linux-user/syscall_defs.h | 22 +- 3 files changed, 568 insertions(+), 5 deletions(-) diff --git a/linux-user/strace.c b/linux-user/strace.c index 6ef5d38..c8df76f 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -5,6 +5,9 @@ #include #include #include +#include +#include +#include #include #include "qemu.h" @@ -57,10 +60,15 @@ UNUSED static void print_open_flags(abi_long, int); UNUSED static void print_syscall_prologue(const struct syscallname *); UNUSED static void print_syscall_epilogue(const struct syscallname *); UNUSED static void print_string(abi_long, int); +UNUSED static void print_buf(abi_long addr, abi_long len, int last); UNUSED static void print_raw_param(const char *, abi_long, int); UNUSED static void print_timeval(abi_ulong, int); UNUSED static void print_number(abi_long, int); UNUSED static void print_signal(abi_ulong, int); +UNUSED static void print_sockaddr(abi_ulong addr, abi_long addrlen); +UNUSED static void print_socket_domain(int domain); +UNUSED static void print_socket_type(int type); +UNUSED static void print_socket_protocol(int domain, int type, int protocol); /* * Utility functions @@ -146,6 +154,165 @@ print_signal(abi_ulong arg, int last) gemu_log("%s%s", signal_name, get_comma(last)); } +static void +print_sockaddr(abi_ulong addr, abi_long addrlen) +{ + struct target_sockaddr *sa; + int i; + int sa_family; + + sa = lock_user(VERIFY_READ, addr, addrlen, 1); + if (sa) { + sa_family = tswap16(sa->sa_family); + switch (sa_family) { + case AF_UNIX: { + struct target_sockaddr_un *un = (struct target_sockaddr_un *)sa; + int i; + gemu_log("{sun_family=AF_UNIX,sun_path=\""); + for (i = 0; i < addrlen - + offsetof(struct target_sockaddr_un, sun_path) && + un->sun_path[i]; i++) { + gemu_log("%c", un->sun_path[i]); + } + gemu_log("\"}"); + break; + } + case AF_INET: { + struct target_sockaddr_in *in = (struct target_sockaddr_in *)sa; + uint8_t *c = (uint8_t *)&in->sin_addr.s_addr; + gemu_log("{sin_family=AF_INET,sin_port=htons(%d),", + ntohs(in->sin_port)); + gemu_log("sin_addr=inet_addr(\"%d.%d.%d.%d\")", + c[0], c[1], c[2], c[3]); + gemu_log("}"); + break; + } + case AF_PACKET: { + struct target_sockaddr_ll *ll = (struct target_sockaddr_ll *)sa; + uint8_t *c = (uint8_t *)&ll->sll_addr; + gemu_log("{sll_family=AF_PACKET," + "sll_protocol=htons(0x%04x),if%d,pkttype=", + ntohs(ll->sll_protocol), ll->sll_ifindex); + switch (ll->sll_pkttype) { + case PACKET_HOST: + gemu_log("PACKET_HOST"); + break; + case PACKET_BROADCAST: + gemu_log("PACKET_BROADCAST"); + break; + case PACKET_MULTICAST: + gemu_log("PACKET_MULTICAST"); + break; + case PACKET_OTHERHOST: + gemu_log("PACKET_OTHERHOST"); + break; + case PACKET_OUTGOING: + gemu_log("PACKET_OUTGOING"); + break; + default: + gemu_log("%d", ll->sll_pkttype); + break; + } + gemu_log(",sll_addr=%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", + c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]); + gemu_log("}"); + break; + } + default: + gemu_log("{sa_family=%d, sa_data={", sa->sa_family); + for (i = 0; i < 13; i++) { + gemu_log("%02x, ", sa->sa_data[i]); + } + gemu_log("%02x}", sa->sa_data[i]); + gemu_log("}"); + break; + } + unlock_user(sa, addr, 0); + } else { + print_raw_param("0x"TARGET_ABI_FMT_lx, addr, 0); + } + gemu_log(", "TARGET_ABI_FMT_ld, addrlen); +} + +static void +print_socket_domain(int domain) +{ + switch (domain) { + case PF_UNIX: + gemu_log("PF_UNIX"); + break; + case PF_INET: + gemu_log("PF_INET"); + break; + case PF_PACKET: + gemu_log("PF_PACKET"); + break; + default: + gemu_log("%d", domain); + break; + } +} + +static void +print_socket_type(int type) +{ + switch (type) { + case TARGET_SOCK_DGRAM: + gemu_log("SOCK_DGRAM"); + break; + case TARGET_SOCK_STREAM: + gemu_log("SOCK_STREAM"); + break; + case TARGET_SOCK_RAW: + gemu_log("SOCK_RAW"); + break; + case TARGET_SOCK_RDM: + gemu_log("SOCK_RDM"); + break; + case TARGET_SOCK_SEQPACKET: + gemu_log("SOCK_SEQPACKET"); + break; + case TARGET_SOCK_PACKET: + gemu_log("SOCK_PACKET"); + break; + } +} + +static void +print_socket_protocol(int domain, int type, int protocol) +{ + if (domain == AF_PACKET || + (domain == AF_INET && type == TARGET_SOCK_PACKET)) { + switch (protocol) { + case 0x0003: + gemu_log("ETH_P_ALL"); + break; + default: + gemu_log("%d", protocol); + } + return; + } + + switch (protocol) { + case IPPROTO_IP: + gemu_log("IPPROTO_IP"); + break; + case IPPROTO_TCP: + gemu_log("IPPROTO_TCP"); + break; + case IPPROTO_UDP: + gemu_log("IPPROTO_UDP"); + break; + case IPPROTO_RAW: + gemu_log("IPPROTO_RAW"); + break; + default: + gemu_log("%d", protocol); + break; + } +} + + #ifdef TARGET_NR__newselect static void print_fdset(int n, abi_ulong target_fds_addr) @@ -497,6 +664,26 @@ UNUSED static struct flags clone_flags[] = { FLAG_END, }; +UNUSED static struct flags msg_flags[] = { + /* send */ + FLAG_GENERIC(MSG_CONFIRM), + FLAG_GENERIC(MSG_DONTROUTE), + FLAG_GENERIC(MSG_DONTWAIT), + FLAG_GENERIC(MSG_EOR), + FLAG_GENERIC(MSG_MORE), + FLAG_GENERIC(MSG_NOSIGNAL), + FLAG_GENERIC(MSG_OOB), + /* recv */ + FLAG_GENERIC(MSG_CMSG_CLOEXEC), + FLAG_GENERIC(MSG_ERRQUEUE), + FLAG_GENERIC(MSG_PEEK), + FLAG_GENERIC(MSG_TRUNC), + FLAG_GENERIC(MSG_WAITALL), + /* recvmsg */ + FLAG_GENERIC(MSG_CTRUNC), + FLAG_END, +}; + /* * print_xxx utility functions. These are used to print syscall * parameters in certain format. All of these have parameter @@ -618,6 +805,36 @@ print_string(abi_long addr, int last) } } +#define MAX_PRINT_BUF 40 +static void +print_buf(abi_long addr, abi_long len, int last) +{ + uint8_t *s; + int i; + + s = lock_user(VERIFY_READ, addr, len, 1); + if (s) { + gemu_log("\""); + for (i = 0; i < MAX_PRINT_BUF && i < len; i++) { + if (isprint(s[i])) { + gemu_log("%c", s[i]); + } else { + gemu_log("\\%o", s[i]); + } + } + gemu_log("\""); + if (i != len) { + gemu_log("..."); + } + if (!last) { + gemu_log(","); + } + unlock_user(s, addr, 0); + } else { + print_pointer(addr, last); + } +} + /* * Prints out raw parameter using given format. Caller needs * to do byte swapping if needed. @@ -1010,6 +1227,338 @@ print__llseek(const struct syscallname *name, } #endif +#if defined(TARGET_NR_socketcall) + +#define get_user_ualx(x, gaddr, idx) \ + get_user_ual(x, (gaddr) + (idx) * sizeof(abi_long)) + +static void do_print_socket(const char *name, abi_long arg1) +{ + abi_ulong domain, type, protocol; + + get_user_ualx(domain, arg1, 0); + get_user_ualx(type, arg1, 1); + get_user_ualx(protocol, arg1, 2); + gemu_log("%s(", name); + print_socket_domain(domain); + gemu_log(","); + print_socket_type(type); + gemu_log(","); + if (domain == AF_PACKET || + (domain == AF_INET && type == TARGET_SOCK_PACKET)) { + protocol = tswap16(protocol); + } + print_socket_protocol(domain, type, protocol); + gemu_log(")"); +} + +static void do_print_sockaddr(const char *name, abi_long arg1) +{ + abi_ulong sockfd, addr, addrlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(addr, arg1, 1); + get_user_ualx(addrlen, arg1, 2); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_sockaddr(addr, addrlen); + gemu_log(")"); +} + +static void do_print_listen(const char *name, abi_long arg1) +{ + abi_ulong sockfd, backlog; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(backlog, arg1, 1); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_raw_param(TARGET_ABI_FMT_ld, backlog, 1); + gemu_log(")"); +} + +static void do_print_socketpair(const char *name, abi_long arg1) +{ + abi_ulong domain, type, protocol, tab; + + get_user_ualx(domain, arg1, 0); + get_user_ualx(type, arg1, 1); + get_user_ualx(protocol, arg1, 2); + get_user_ualx(tab, arg1, 3); + + gemu_log("%s(", name); + print_socket_domain(domain); + gemu_log(","); + print_socket_type(type); + gemu_log(","); + print_socket_protocol(domain, type, protocol); + gemu_log(","); + print_raw_param(TARGET_ABI_FMT_lx, tab, 1); + gemu_log(")"); +} + +static void do_print_sendrecv(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, len, flags; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(len, arg1, 2); + get_user_ualx(flags, arg1, 3); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_buf(msg, len, 0); + print_raw_param(TARGET_ABI_FMT_ld, len, 0); + print_flags(msg_flags, flags, 1); + gemu_log(")"); +} + +static void do_print_msgaddr(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, len, flags, addr, addrlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(len, arg1, 2); + get_user_ualx(flags, arg1, 3); + get_user_ualx(addr, arg1, 4); + get_user_ualx(addrlen, arg1, 5); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_buf(msg, len, 0); + print_raw_param(TARGET_ABI_FMT_ld, len, 0); + print_flags(msg_flags, flags, 0); + print_sockaddr(addr, addrlen); + gemu_log(")"); +} + +static void do_print_shutdown(const char *name, abi_long arg1) +{ + abi_ulong sockfd, how; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(how, arg1, 1); + + gemu_log("shutdown("); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + switch (how) { + case SHUT_RD: + gemu_log("SHUT_RD"); + break; + case SHUT_WR: + gemu_log("SHUT_WR"); + break; + case SHUT_RDWR: + gemu_log("SHUT_RDWR"); + break; + default: + print_raw_param(TARGET_ABI_FMT_ld, how, 1); + break; + } + gemu_log(")"); +} + +static void do_print_msg(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, flags; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(flags, arg1, 2); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_pointer(msg, 0); + print_flags(msg_flags, flags, 1); + gemu_log(")"); +} + +static void do_print_sockopt(const char *name, abi_long arg1) +{ + abi_ulong sockfd, level, optname, optval, optlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(level, arg1, 1); + get_user_ualx(optname, arg1, 2); + get_user_ualx(optval, arg1, 3); + get_user_ualx(optlen, arg1, 4); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + switch (level) { + case SOL_TCP: + gemu_log("SOL_TCP,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case SOL_IP: + gemu_log("SOL_IP,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case SOL_RAW: + gemu_log("SOL_RAW,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case TARGET_SOL_SOCKET: + gemu_log("SOL_SOCKET,"); + switch (optname) { + case TARGET_SO_DEBUG: + gemu_log("SO_DEBUG,"); +print_optint: + print_number(optval, 0); + break; + case TARGET_SO_REUSEADDR: + gemu_log("SO_REUSEADDR,"); + goto print_optint; + case TARGET_SO_TYPE: + gemu_log("SO_TYPE,"); + goto print_optint; + case TARGET_SO_ERROR: + gemu_log("SO_ERROR,"); + goto print_optint; + case TARGET_SO_DONTROUTE: + gemu_log("SO_DONTROUTE,"); + goto print_optint; + case TARGET_SO_BROADCAST: + gemu_log("SO_BROADCAST,"); + goto print_optint; + case TARGET_SO_SNDBUF: + gemu_log("SO_SNDBUF,"); + goto print_optint; + case TARGET_SO_RCVBUF: + gemu_log("SO_RCVBUF,"); + goto print_optint; + case TARGET_SO_KEEPALIVE: + gemu_log("SO_KEEPALIVE,"); + goto print_optint; + case TARGET_SO_OOBINLINE: + gemu_log("SO_OOBINLINE,"); + goto print_optint; + case TARGET_SO_NO_CHECK: + gemu_log("SO_NO_CHECK,"); + goto print_optint; + case TARGET_SO_PRIORITY: + gemu_log("SO_PRIORITY,"); + goto print_optint; + case TARGET_SO_BSDCOMPAT: + gemu_log("SO_BSDCOMPAT,"); + goto print_optint; + case TARGET_SO_PASSCRED: + gemu_log("SO_PASSCRED,"); + goto print_optint; + case TARGET_SO_TIMESTAMP: + gemu_log("SO_TIMESTAMP,"); + goto print_optint; + case TARGET_SO_RCVLOWAT: + gemu_log("SO_RCVLOWAT,"); + goto print_optint; + case TARGET_SO_RCVTIMEO: + gemu_log("SO_RCVTIMEO,"); + print_timeval(optval, 0); + break; + case TARGET_SO_SNDTIMEO: + gemu_log("SO_SNDTIMEO,"); + print_timeval(optval, 0); + break; + case TARGET_SO_ATTACH_FILTER: { + struct target_sock_fprog *fprog; + + gemu_log("SO_ATTACH_FILTER,"); + + if (lock_user_struct(VERIFY_READ, fprog, optval, 0)) { + struct target_sock_filter *filter; + gemu_log("{"); + if (lock_user_struct(VERIFY_READ, filter, + tswapal(fprog->filter), 0)) { + int i; + for (i = 0; i < tswap16(fprog->len) - 1; i++) { + gemu_log("[%d]{0x%x,%d,%d,0x%x},", + i, tswap16(filter[i].code), + filter[i].jt, filter[i].jf, + tswap32(filter[i].k)); + } + gemu_log("[%d]{0x%x,%d,%d,0x%x}", + i, tswap16(filter[i].code), + filter[i].jt, filter[i].jf, + tswap32(filter[i].k)); + } else { + gemu_log(TARGET_ABI_FMT_lx, tswapal(fprog->filter)); + } + gemu_log(",%d},", tswap16(fprog->len)); + unlock_user(fprog, optval, 0); + } else { + print_pointer(optval, 0); + } + break; + } + default: + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + } + break; + default: + print_raw_param(TARGET_ABI_FMT_ld, level, 0); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + } + print_raw_param(TARGET_ABI_FMT_ld, optlen, 1); + gemu_log(")"); +} + +#define PRINT_SOCKOP(name, func) \ + [SOCKOP_##name] = { #name, func } + +static struct { + const char *name; + void (*print)(const char *, abi_long); +} scall[] = { + PRINT_SOCKOP(socket, do_print_socket), + PRINT_SOCKOP(bind, do_print_sockaddr), + PRINT_SOCKOP(connect, do_print_sockaddr), + PRINT_SOCKOP(listen, do_print_listen), + PRINT_SOCKOP(accept, do_print_sockaddr), + PRINT_SOCKOP(getsockname, do_print_sockaddr), + PRINT_SOCKOP(getpeername, do_print_sockaddr), + PRINT_SOCKOP(socketpair, do_print_socketpair), + PRINT_SOCKOP(send, do_print_sendrecv), + PRINT_SOCKOP(recv, do_print_sendrecv), + PRINT_SOCKOP(sendto, do_print_msgaddr), + PRINT_SOCKOP(recvfrom, do_print_msgaddr), + PRINT_SOCKOP(shutdown, do_print_shutdown), + PRINT_SOCKOP(sendmsg, do_print_msg), + PRINT_SOCKOP(recvmsg, do_print_msg), + PRINT_SOCKOP(setsockopt, do_print_sockopt), + PRINT_SOCKOP(getsockopt, do_print_sockopt), +}; + +static void +print_socketcall(const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + if (arg0 >= 0 && arg0 < ARRAY_SIZE(scall) && scall[arg0].print) { + scall[arg0].print(scall[arg0].name, arg1); + return; + } + print_syscall_prologue(name); + print_raw_param(TARGET_ABI_FMT_ld, arg0, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg1, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg2, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg3, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg4, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg5, 0); + print_syscall_epilogue(name); +} +#endif + #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) || \ defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) static void diff --git a/linux-user/strace.list b/linux-user/strace.list index aa0cd73..b379497 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -1294,7 +1294,7 @@ { TARGET_NR_socket, "socket" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_socketcall -{ TARGET_NR_socketcall, "socketcall" , NULL, NULL, NULL }, +{ TARGET_NR_socketcall, "socketcall" , NULL, print_socketcall, NULL }, #endif #ifdef TARGET_NR_socketpair { TARGET_NR_socketpair, "socketpair" , NULL, NULL, NULL }, diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 420463b..dce1bcc 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -135,6 +135,24 @@ struct target_sockaddr_ll { uint8_t sll_addr[8]; /* Physical layer address */ }; +struct target_sockaddr_un { + uint16_t su_family; + uint8_t sun_path[108]; +}; + +struct target_in_addr { + uint32_t s_addr; /* big endian */ +}; + +struct target_sockaddr_in { + uint16_t sin_family; + int16_t sin_port; /* big endian */ + struct target_in_addr sin_addr; + uint8_t __pad[sizeof(struct target_sockaddr) - + sizeof(uint16_t) - sizeof(int16_t) - + sizeof(struct target_in_addr)]; +}; + struct target_sock_filter { abi_ushort code; uint8_t jt; @@ -147,10 +165,6 @@ struct target_sock_fprog { abi_ulong filter; }; -struct target_in_addr { - uint32_t s_addr; /* big endian */ -}; - struct target_ip_mreq { struct target_in_addr imr_multiaddr; struct target_in_addr imr_address;