root / linux-user / strace.c @ 1ffc346f
History | View | Annotate | Download (7.7 kB)
1 |
#include <stdio.h> |
---|---|
2 |
#include <errno.h> |
3 |
#include <sys/ipc.h> |
4 |
#include <sys/msg.h> |
5 |
#include <sys/sem.h> |
6 |
#include <sys/shm.h> |
7 |
#include <sys/select.h> |
8 |
#include <sys/types.h> |
9 |
#include <unistd.h> |
10 |
#include "qemu.h" |
11 |
|
12 |
int do_strace=0; |
13 |
|
14 |
struct syscallname {
|
15 |
int nr;
|
16 |
char *name;
|
17 |
char *format;
|
18 |
void (*call)(struct syscallname *, |
19 |
abi_long, abi_long, abi_long, |
20 |
abi_long, abi_long, abi_long); |
21 |
void (*result)(struct syscallname *, abi_long); |
22 |
}; |
23 |
|
24 |
/*
|
25 |
* Utility functions
|
26 |
*/
|
27 |
static void |
28 |
print_ipc_cmd(int cmd)
|
29 |
{ |
30 |
#define output_cmd(val) \
|
31 |
if( cmd == val ) { \
|
32 |
gemu_log(#val); \
|
33 |
return; \
|
34 |
} |
35 |
|
36 |
cmd &= 0xff;
|
37 |
|
38 |
/* General IPC commands */
|
39 |
output_cmd( IPC_RMID ); |
40 |
output_cmd( IPC_SET ); |
41 |
output_cmd( IPC_STAT ); |
42 |
output_cmd( IPC_INFO ); |
43 |
/* msgctl() commands */
|
44 |
#ifdef __USER_MISC
|
45 |
output_cmd( MSG_STAT ); |
46 |
output_cmd( MSG_INFO ); |
47 |
#endif
|
48 |
/* shmctl() commands */
|
49 |
output_cmd( SHM_LOCK ); |
50 |
output_cmd( SHM_UNLOCK ); |
51 |
output_cmd( SHM_STAT ); |
52 |
output_cmd( SHM_INFO ); |
53 |
/* semctl() commands */
|
54 |
output_cmd( GETPID ); |
55 |
output_cmd( GETVAL ); |
56 |
output_cmd( GETALL ); |
57 |
output_cmd( GETNCNT ); |
58 |
output_cmd( GETZCNT ); |
59 |
output_cmd( SETVAL ); |
60 |
output_cmd( SETALL ); |
61 |
output_cmd( SEM_STAT ); |
62 |
output_cmd( SEM_INFO ); |
63 |
output_cmd( IPC_RMID ); |
64 |
output_cmd( IPC_RMID ); |
65 |
output_cmd( IPC_RMID ); |
66 |
output_cmd( IPC_RMID ); |
67 |
output_cmd( IPC_RMID ); |
68 |
output_cmd( IPC_RMID ); |
69 |
output_cmd( IPC_RMID ); |
70 |
output_cmd( IPC_RMID ); |
71 |
output_cmd( IPC_RMID ); |
72 |
|
73 |
/* Some value we don't recognize */
|
74 |
gemu_log("%d",cmd);
|
75 |
} |
76 |
|
77 |
#ifdef TARGET_NR__newselect
|
78 |
static void |
79 |
print_fdset(int n, abi_ulong target_fds_addr)
|
80 |
{ |
81 |
int i;
|
82 |
|
83 |
gemu_log("[");
|
84 |
if( target_fds_addr ) {
|
85 |
abi_long *target_fds; |
86 |
|
87 |
target_fds = lock_user(VERIFY_READ, |
88 |
target_fds_addr, |
89 |
sizeof(*target_fds)*(n / TARGET_ABI_BITS + 1), |
90 |
1);
|
91 |
|
92 |
if (!target_fds)
|
93 |
return;
|
94 |
|
95 |
for (i=n; i>=0; i--) { |
96 |
if ((tswapl(target_fds[i / TARGET_ABI_BITS]) >> (i & (TARGET_ABI_BITS - 1))) & 1) |
97 |
gemu_log("%d,", i );
|
98 |
} |
99 |
unlock_user(target_fds, target_fds_addr, 0);
|
100 |
} |
101 |
gemu_log("]");
|
102 |
} |
103 |
|
104 |
static void |
105 |
print_timeval(abi_ulong tv_addr) |
106 |
{ |
107 |
if( tv_addr ) {
|
108 |
struct target_timeval *tv;
|
109 |
|
110 |
tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1); |
111 |
if (!tv)
|
112 |
return;
|
113 |
gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}", |
114 |
tv->tv_sec, tv->tv_usec); |
115 |
unlock_user(tv, tv_addr, 0);
|
116 |
} else
|
117 |
gemu_log("NULL");
|
118 |
} |
119 |
#endif
|
120 |
|
121 |
/*
|
122 |
* Sysycall specific output functions
|
123 |
*/
|
124 |
|
125 |
/* select */
|
126 |
#ifdef TARGET_NR__newselect
|
127 |
static long newselect_arg1 = 0; |
128 |
static long newselect_arg2 = 0; |
129 |
static long newselect_arg3 = 0; |
130 |
static long newselect_arg4 = 0; |
131 |
static long newselect_arg5 = 0; |
132 |
|
133 |
static void |
134 |
print_newselect(struct syscallname *name,
|
135 |
abi_long arg1, abi_long arg2, abi_long arg3, |
136 |
abi_long arg4, abi_long arg5, abi_long arg6) |
137 |
{ |
138 |
gemu_log("%s(" TARGET_ABI_FMT_ld ",", name->name, arg1); |
139 |
print_fdset(arg1, arg2); |
140 |
gemu_log(",");
|
141 |
print_fdset(arg1, arg3); |
142 |
gemu_log(",");
|
143 |
print_fdset(arg1, arg4); |
144 |
gemu_log(",");
|
145 |
print_timeval(arg5); |
146 |
gemu_log(")");
|
147 |
|
148 |
/* save for use in the return output function below */
|
149 |
newselect_arg1=arg1; |
150 |
newselect_arg2=arg2; |
151 |
newselect_arg3=arg3; |
152 |
newselect_arg4=arg4; |
153 |
newselect_arg5=arg5; |
154 |
} |
155 |
#endif
|
156 |
|
157 |
static void |
158 |
print_semctl(struct syscallname *name,
|
159 |
abi_long arg1, abi_long arg2, abi_long arg3, |
160 |
abi_long arg4, abi_long arg5, abi_long arg6) |
161 |
{ |
162 |
gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", name->name, arg1, arg2); |
163 |
print_ipc_cmd(arg3); |
164 |
gemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4); |
165 |
} |
166 |
|
167 |
static void |
168 |
print_execve(struct syscallname *name,
|
169 |
abi_long arg1, abi_long arg2, abi_long arg3, |
170 |
abi_long arg4, abi_long arg5, abi_long arg6) |
171 |
{ |
172 |
abi_ulong arg_ptr_addr; |
173 |
char *s;
|
174 |
|
175 |
if (!(s = lock_user_string(arg1)))
|
176 |
return;
|
177 |
gemu_log("%s(\"%s\",{", name->name, s);
|
178 |
unlock_user(s, arg1, 0);
|
179 |
|
180 |
for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) { |
181 |
abi_ulong *arg_ptr, arg_addr, s_addr; |
182 |
|
183 |
arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1); |
184 |
if (!arg_ptr)
|
185 |
return;
|
186 |
arg_addr = tswapl(*arg_ptr); |
187 |
unlock_user(arg_ptr, arg_ptr_addr, 0);
|
188 |
if (!arg_addr)
|
189 |
break;
|
190 |
if ((s = lock_user_string(arg_addr))) {
|
191 |
gemu_log("\"%s\",", s);
|
192 |
unlock_user(s, s_addr, 0);
|
193 |
} |
194 |
} |
195 |
|
196 |
gemu_log("NULL})");
|
197 |
} |
198 |
|
199 |
#ifdef TARGET_NR_ipc
|
200 |
static void |
201 |
print_ipc(struct syscallname *name,
|
202 |
abi_long arg1, abi_long arg2, abi_long arg3, |
203 |
abi_long arg4, abi_long arg5, abi_long arg6) |
204 |
{ |
205 |
switch(arg1) {
|
206 |
case IPCOP_semctl:
|
207 |
name->name = "semctl";
|
208 |
print_semctl(name,arg2,arg3,arg4,arg5,arg6,0);
|
209 |
break;
|
210 |
default:
|
211 |
gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")", |
212 |
name->name, arg1, arg2, arg3, arg4); |
213 |
} |
214 |
} |
215 |
#endif
|
216 |
|
217 |
/*
|
218 |
* Variants for the return value output function
|
219 |
*/
|
220 |
|
221 |
static void |
222 |
print_syscall_ret_addr(struct syscallname *name, abi_long ret)
|
223 |
{ |
224 |
if( ret == -1 ) { |
225 |
gemu_log(" = -1 errno=%d (%s)\n", errno, target_strerror(errno));
|
226 |
} else {
|
227 |
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); |
228 |
} |
229 |
} |
230 |
|
231 |
#if 0 /* currently unused */
|
232 |
static void
|
233 |
print_syscall_ret_raw(struct syscallname *name, abi_long ret)
|
234 |
{
|
235 |
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
|
236 |
}
|
237 |
#endif
|
238 |
|
239 |
#ifdef TARGET_NR__newselect
|
240 |
static void |
241 |
print_syscall_ret_newselect(struct syscallname *name, abi_long ret)
|
242 |
{ |
243 |
gemu_log(" = 0x" TARGET_ABI_FMT_lx " (", ret); |
244 |
print_fdset(newselect_arg1,newselect_arg2); |
245 |
gemu_log(",");
|
246 |
print_fdset(newselect_arg1,newselect_arg3); |
247 |
gemu_log(",");
|
248 |
print_fdset(newselect_arg1,newselect_arg4); |
249 |
gemu_log(",");
|
250 |
print_timeval(newselect_arg5); |
251 |
gemu_log(")\n");
|
252 |
} |
253 |
#endif
|
254 |
|
255 |
/*
|
256 |
* An array of all of the syscalls we know about
|
257 |
*/
|
258 |
|
259 |
static struct syscallname scnames[] = { |
260 |
#include "strace.list" |
261 |
}; |
262 |
|
263 |
static int nsyscalls = sizeof(scnames)/sizeof(struct syscallname); |
264 |
|
265 |
/*
|
266 |
* The public interface to this module.
|
267 |
*/
|
268 |
void
|
269 |
print_syscall(int num,
|
270 |
abi_long arg1, abi_long arg2, abi_long arg3, |
271 |
abi_long arg4, abi_long arg5, abi_long arg6) |
272 |
{ |
273 |
int i;
|
274 |
char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")"; |
275 |
|
276 |
gemu_log("%d ", getpid() );
|
277 |
|
278 |
for(i=0;i<nsyscalls;i++) |
279 |
if( scnames[i].nr == num ) {
|
280 |
if( scnames[i].call != NULL ) { |
281 |
scnames[i].call(&scnames[i],arg1,arg2,arg3,arg4,arg5,arg6); |
282 |
} else {
|
283 |
/* XXX: this format system is broken because it uses
|
284 |
host types and host pointers for strings */
|
285 |
if( scnames[i].format != NULL ) |
286 |
format = scnames[i].format; |
287 |
gemu_log(format,scnames[i].name, arg1,arg2,arg3,arg4,arg5,arg6); |
288 |
} |
289 |
break;
|
290 |
} |
291 |
} |
292 |
|
293 |
|
294 |
void
|
295 |
print_syscall_ret(int num, abi_long ret)
|
296 |
{ |
297 |
int i;
|
298 |
|
299 |
for(i=0;i<nsyscalls;i++) |
300 |
if( scnames[i].nr == num ) {
|
301 |
if( scnames[i].result != NULL ) { |
302 |
scnames[i].result(&scnames[i],ret); |
303 |
} else {
|
304 |
if( ret < 0 ) { |
305 |
gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret, target_strerror(-ret)); |
306 |
} else {
|
307 |
gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); |
308 |
} |
309 |
} |
310 |
break;
|
311 |
} |
312 |
} |
313 |
|