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linux-user: add socketcall() strace

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Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Laurent Vivier 2016-06-11 02:19:45 +02:00 committed by Riku Voipio
parent 7e3b92ece0
commit fb3aabf384
3 changed files with 568 additions and 5 deletions
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549
linux-user/strace.c
View File

@ -5,6 +5,9 @@
#include <sys/shm.h>
#include <sys/select.h>
#include <sys/mount.h>
#include <arpa/inet.h>
#include <netinet/tcp.h>
#include <linux/if_packet.h>
#include <sched.h>
#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

2
linux-user/strace.list
View File

@ -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 },

22
linux-user/syscall_defs.h
View File

@ -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;