root / bsd-user / strace.c @ 5bc89ef6
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1 | 84778508 | blueswir1 | #include <stdio.h> |
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2 | 84778508 | blueswir1 | #include <errno.h> |
3 | 84778508 | blueswir1 | #include <sys/select.h> |
4 | 84778508 | blueswir1 | #include <sys/types.h> |
5 | 84778508 | blueswir1 | #include <unistd.h> |
6 | 84778508 | blueswir1 | #include <sys/syscall.h> |
7 | 84778508 | blueswir1 | #include "qemu.h" |
8 | 84778508 | blueswir1 | |
9 | 84778508 | blueswir1 | int do_strace=0; |
10 | 84778508 | blueswir1 | |
11 | 84778508 | blueswir1 | struct syscallname {
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12 | 84778508 | blueswir1 | int nr;
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13 | 84778508 | blueswir1 | const char *name; |
14 | 84778508 | blueswir1 | const char *format; |
15 | 84778508 | blueswir1 | void (*call)(const struct syscallname *, |
16 | 84778508 | blueswir1 | abi_long, abi_long, abi_long, |
17 | 84778508 | blueswir1 | abi_long, abi_long, abi_long); |
18 | 84778508 | blueswir1 | void (*result)(const struct syscallname *, abi_long); |
19 | 84778508 | blueswir1 | }; |
20 | 84778508 | blueswir1 | |
21 | 84778508 | blueswir1 | /*
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22 | 84778508 | blueswir1 | * Utility functions
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23 | 84778508 | blueswir1 | */
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24 | 84778508 | blueswir1 | |
25 | 84778508 | blueswir1 | static void |
26 | 84778508 | blueswir1 | print_execve(const struct syscallname *name, |
27 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
28 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6) |
29 | 84778508 | blueswir1 | { |
30 | 84778508 | blueswir1 | abi_ulong arg_ptr_addr; |
31 | 84778508 | blueswir1 | char *s;
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32 | 84778508 | blueswir1 | |
33 | 84778508 | blueswir1 | if (!(s = lock_user_string(arg1)))
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34 | 84778508 | blueswir1 | return;
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35 | 84778508 | blueswir1 | gemu_log("%s(\"%s\",{", name->name, s);
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36 | 84778508 | blueswir1 | unlock_user(s, arg1, 0);
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37 | 84778508 | blueswir1 | |
38 | 84778508 | blueswir1 | for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) { |
39 | 18c9a9c3 | Christoph Egger | abi_ulong *arg_ptr, arg_addr; |
40 | 84778508 | blueswir1 | |
41 | 84778508 | blueswir1 | arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1); |
42 | 84778508 | blueswir1 | if (!arg_ptr)
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43 | 84778508 | blueswir1 | return;
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44 | 84778508 | blueswir1 | arg_addr = tswapl(*arg_ptr); |
45 | 84778508 | blueswir1 | unlock_user(arg_ptr, arg_ptr_addr, 0);
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46 | 84778508 | blueswir1 | if (!arg_addr)
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47 | 84778508 | blueswir1 | break;
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48 | 84778508 | blueswir1 | if ((s = lock_user_string(arg_addr))) {
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49 | 84778508 | blueswir1 | gemu_log("\"%s\",", s);
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50 | 18c9a9c3 | Christoph Egger | unlock_user(s, arg_addr, 0);
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51 | 84778508 | blueswir1 | } |
52 | 84778508 | blueswir1 | } |
53 | 84778508 | blueswir1 | |
54 | 84778508 | blueswir1 | gemu_log("NULL})");
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55 | 84778508 | blueswir1 | } |
56 | 84778508 | blueswir1 | |
57 | 84778508 | blueswir1 | /*
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58 | 84778508 | blueswir1 | * Variants for the return value output function
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59 | 84778508 | blueswir1 | */
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60 | 84778508 | blueswir1 | |
61 | 84778508 | blueswir1 | static void |
62 | 84778508 | blueswir1 | print_syscall_ret_addr(const struct syscallname *name, abi_long ret) |
63 | 84778508 | blueswir1 | { |
64 | 84778508 | blueswir1 | if( ret == -1 ) { |
65 | 84778508 | blueswir1 | gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno));
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66 | 84778508 | blueswir1 | } else {
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67 | 84778508 | blueswir1 | gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); |
68 | 84778508 | blueswir1 | } |
69 | 84778508 | blueswir1 | } |
70 | 84778508 | blueswir1 | |
71 | 84778508 | blueswir1 | #if 0 /* currently unused */
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72 | 84778508 | blueswir1 | static void
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73 | 84778508 | blueswir1 | print_syscall_ret_raw(struct syscallname *name, abi_long ret)
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74 | 84778508 | blueswir1 | {
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75 | 84778508 | blueswir1 | gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
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76 | 84778508 | blueswir1 | }
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77 | 84778508 | blueswir1 | #endif
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78 | 84778508 | blueswir1 | |
79 | 84778508 | blueswir1 | /*
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80 | 84778508 | blueswir1 | * An array of all of the syscalls we know about
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81 | 84778508 | blueswir1 | */
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82 | 84778508 | blueswir1 | |
83 | 84778508 | blueswir1 | static const struct syscallname freebsd_scnames[] = { |
84 | 84778508 | blueswir1 | #include "freebsd/strace.list" |
85 | 84778508 | blueswir1 | }; |
86 | 84778508 | blueswir1 | static const struct syscallname netbsd_scnames[] = { |
87 | 84778508 | blueswir1 | #include "netbsd/strace.list" |
88 | 84778508 | blueswir1 | }; |
89 | 84778508 | blueswir1 | static const struct syscallname openbsd_scnames[] = { |
90 | 84778508 | blueswir1 | #include "openbsd/strace.list" |
91 | 84778508 | blueswir1 | }; |
92 | 84778508 | blueswir1 | |
93 | 84778508 | blueswir1 | static void |
94 | 84778508 | blueswir1 | print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames, |
95 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
96 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6) |
97 | 84778508 | blueswir1 | { |
98 | 84778508 | blueswir1 | unsigned int i; |
99 | 84778508 | blueswir1 | const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," |
100 | 84778508 | blueswir1 | TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," |
101 | 84778508 | blueswir1 | TARGET_ABI_FMT_ld ")";
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102 | 84778508 | blueswir1 | |
103 | 84778508 | blueswir1 | gemu_log("%d ", getpid() );
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104 | 84778508 | blueswir1 | |
105 | 84778508 | blueswir1 | for (i = 0; i < nscnames; i++) |
106 | 84778508 | blueswir1 | if (scnames[i].nr == num) {
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107 | 84778508 | blueswir1 | if (scnames[i].call != NULL) { |
108 | 84778508 | blueswir1 | scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5, |
109 | 84778508 | blueswir1 | arg6); |
110 | 84778508 | blueswir1 | } else {
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111 | 84778508 | blueswir1 | /* XXX: this format system is broken because it uses
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112 | 84778508 | blueswir1 | host types and host pointers for strings */
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113 | 84778508 | blueswir1 | if (scnames[i].format != NULL) |
114 | 84778508 | blueswir1 | format = scnames[i].format; |
115 | 84778508 | blueswir1 | gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4, |
116 | 84778508 | blueswir1 | arg5, arg6); |
117 | 84778508 | blueswir1 | } |
118 | 84778508 | blueswir1 | return;
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119 | 84778508 | blueswir1 | } |
120 | 84778508 | blueswir1 | gemu_log("Unknown syscall %d\n", num);
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121 | 84778508 | blueswir1 | } |
122 | 84778508 | blueswir1 | |
123 | 84778508 | blueswir1 | static void |
124 | 84778508 | blueswir1 | print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames, |
125 | 84778508 | blueswir1 | unsigned int nscnames) |
126 | 84778508 | blueswir1 | { |
127 | 84778508 | blueswir1 | unsigned int i; |
128 | 84778508 | blueswir1 | |
129 | 84778508 | blueswir1 | for (i = 0; i < nscnames; i++) |
130 | 84778508 | blueswir1 | if (scnames[i].nr == num) {
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131 | 84778508 | blueswir1 | if (scnames[i].result != NULL) { |
132 | 84778508 | blueswir1 | scnames[i].result(&scnames[i], ret); |
133 | 84778508 | blueswir1 | } else {
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134 | 84778508 | blueswir1 | if( ret < 0 ) { |
135 | 84778508 | blueswir1 | gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret, |
136 | 84778508 | blueswir1 | strerror(-ret)); |
137 | 84778508 | blueswir1 | } else {
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138 | 84778508 | blueswir1 | gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); |
139 | 84778508 | blueswir1 | } |
140 | 84778508 | blueswir1 | } |
141 | 84778508 | blueswir1 | break;
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142 | 84778508 | blueswir1 | } |
143 | 84778508 | blueswir1 | } |
144 | 84778508 | blueswir1 | |
145 | 84778508 | blueswir1 | /*
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146 | 84778508 | blueswir1 | * The public interface to this module.
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147 | 84778508 | blueswir1 | */
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148 | 84778508 | blueswir1 | void
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149 | 84778508 | blueswir1 | print_freebsd_syscall(int num,
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150 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
151 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6) |
152 | 84778508 | blueswir1 | { |
153 | 84778508 | blueswir1 | print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames), |
154 | 84778508 | blueswir1 | arg1, arg2, arg3, arg4, arg5, arg6); |
155 | 84778508 | blueswir1 | } |
156 | 84778508 | blueswir1 | |
157 | 84778508 | blueswir1 | void
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158 | 84778508 | blueswir1 | print_freebsd_syscall_ret(int num, abi_long ret)
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159 | 84778508 | blueswir1 | { |
160 | 84778508 | blueswir1 | print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames)); |
161 | 84778508 | blueswir1 | } |
162 | 84778508 | blueswir1 | |
163 | 84778508 | blueswir1 | void
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164 | 84778508 | blueswir1 | print_netbsd_syscall(int num,
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165 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
166 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6) |
167 | 84778508 | blueswir1 | { |
168 | 84778508 | blueswir1 | print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames), |
169 | 84778508 | blueswir1 | arg1, arg2, arg3, arg4, arg5, arg6); |
170 | 84778508 | blueswir1 | } |
171 | 84778508 | blueswir1 | |
172 | 84778508 | blueswir1 | void
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173 | 84778508 | blueswir1 | print_netbsd_syscall_ret(int num, abi_long ret)
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174 | 84778508 | blueswir1 | { |
175 | 84778508 | blueswir1 | print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames)); |
176 | 84778508 | blueswir1 | } |
177 | 84778508 | blueswir1 | |
178 | 84778508 | blueswir1 | void
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179 | 84778508 | blueswir1 | print_openbsd_syscall(int num,
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180 | 84778508 | blueswir1 | abi_long arg1, abi_long arg2, abi_long arg3, |
181 | 84778508 | blueswir1 | abi_long arg4, abi_long arg5, abi_long arg6) |
182 | 84778508 | blueswir1 | { |
183 | 84778508 | blueswir1 | print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames), |
184 | 84778508 | blueswir1 | arg1, arg2, arg3, arg4, arg5, arg6); |
185 | 84778508 | blueswir1 | } |
186 | 84778508 | blueswir1 | |
187 | 84778508 | blueswir1 | void
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188 | 84778508 | blueswir1 | print_openbsd_syscall_ret(int num, abi_long ret)
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189 | 84778508 | blueswir1 | { |
190 | 84778508 | blueswir1 | print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames)); |
191 | 84778508 | blueswir1 | } |