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1.1 root 1: #include <stdio.h>
2: #include <errno.h>
3: #include <sys/select.h>
4: #include <sys/types.h>
5: #include <unistd.h>
6: #include <sys/syscall.h>
7: #include "qemu.h"
8:
9: int do_strace=0;
10:
11: struct syscallname {
12: int nr;
13: const char *name;
14: const char *format;
15: void (*call)(const struct syscallname *,
16: abi_long, abi_long, abi_long,
17: abi_long, abi_long, abi_long);
18: void (*result)(const struct syscallname *, abi_long);
19: };
20:
21: /*
22: * Utility functions
23: */
24:
25: static void
26: print_execve(const struct syscallname *name,
27: abi_long arg1, abi_long arg2, abi_long arg3,
28: abi_long arg4, abi_long arg5, abi_long arg6)
29: {
30: abi_ulong arg_ptr_addr;
31: char *s;
32:
33: if (!(s = lock_user_string(arg1)))
34: return;
35: gemu_log("%s(\"%s\",{", name->name, s);
36: unlock_user(s, arg1, 0);
37:
38: for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
1.1.1.2 ! root 39: abi_ulong *arg_ptr, arg_addr;
1.1 root 40:
41: arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
42: if (!arg_ptr)
43: return;
44: arg_addr = tswapl(*arg_ptr);
45: unlock_user(arg_ptr, arg_ptr_addr, 0);
46: if (!arg_addr)
47: break;
48: if ((s = lock_user_string(arg_addr))) {
49: gemu_log("\"%s\",", s);
1.1.1.2 ! root 50: unlock_user(s, arg_addr, 0);
1.1 root 51: }
52: }
53:
54: gemu_log("NULL})");
55: }
56:
57: /*
58: * Variants for the return value output function
59: */
60:
61: static void
62: print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
63: {
64: if( ret == -1 ) {
65: gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno));
66: } else {
67: gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
68: }
69: }
70:
71: #if 0 /* currently unused */
72: static void
73: print_syscall_ret_raw(struct syscallname *name, abi_long ret)
74: {
75: gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
76: }
77: #endif
78:
79: /*
80: * An array of all of the syscalls we know about
81: */
82:
83: static const struct syscallname freebsd_scnames[] = {
84: #include "freebsd/strace.list"
85: };
86: static const struct syscallname netbsd_scnames[] = {
87: #include "netbsd/strace.list"
88: };
89: static const struct syscallname openbsd_scnames[] = {
90: #include "openbsd/strace.list"
91: };
92:
93: static void
94: print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames,
95: abi_long arg1, abi_long arg2, abi_long arg3,
96: abi_long arg4, abi_long arg5, abi_long arg6)
97: {
98: unsigned int i;
99: const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
100: TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
101: TARGET_ABI_FMT_ld ")";
102:
103: gemu_log("%d ", getpid() );
104:
105: for (i = 0; i < nscnames; i++)
106: if (scnames[i].nr == num) {
107: if (scnames[i].call != NULL) {
108: scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5,
109: arg6);
110: } else {
111: /* XXX: this format system is broken because it uses
112: host types and host pointers for strings */
113: if (scnames[i].format != NULL)
114: format = scnames[i].format;
115: gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4,
116: arg5, arg6);
117: }
118: return;
119: }
120: gemu_log("Unknown syscall %d\n", num);
121: }
122:
123: static void
124: print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames,
125: unsigned int nscnames)
126: {
127: unsigned int i;
128:
129: for (i = 0; i < nscnames; i++)
130: if (scnames[i].nr == num) {
131: if (scnames[i].result != NULL) {
132: scnames[i].result(&scnames[i], ret);
133: } else {
134: if( ret < 0 ) {
135: gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret,
136: strerror(-ret));
137: } else {
138: gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
139: }
140: }
141: break;
142: }
143: }
144:
145: /*
146: * The public interface to this module.
147: */
148: void
149: print_freebsd_syscall(int num,
150: abi_long arg1, abi_long arg2, abi_long arg3,
151: abi_long arg4, abi_long arg5, abi_long arg6)
152: {
153: print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames),
154: arg1, arg2, arg3, arg4, arg5, arg6);
155: }
156:
157: void
158: print_freebsd_syscall_ret(int num, abi_long ret)
159: {
160: print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames));
161: }
162:
163: void
164: print_netbsd_syscall(int num,
165: abi_long arg1, abi_long arg2, abi_long arg3,
166: abi_long arg4, abi_long arg5, abi_long arg6)
167: {
168: print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames),
169: arg1, arg2, arg3, arg4, arg5, arg6);
170: }
171:
172: void
173: print_netbsd_syscall_ret(int num, abi_long ret)
174: {
175: print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames));
176: }
177:
178: void
179: print_openbsd_syscall(int num,
180: abi_long arg1, abi_long arg2, abi_long arg3,
181: abi_long arg4, abi_long arg5, abi_long arg6)
182: {
183: print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames),
184: arg1, arg2, arg3, arg4, arg5, arg6);
185: }
186:
187: void
188: print_openbsd_syscall_ret(int num, abi_long ret)
189: {
190: print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames));
191: }
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