1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
package generate
import (
"strings"
"testing"
)
func mustParseOne(t *testing.T, data string) Format {
t.Helper()
formats, err := ParseFormats(strings.NewReader(data))
if err != nil {
t.Fatalf("ParseFormats failed: %v", err)
}
if len(formats) != 1 {
t.Fatalf("expected 1 format, got %d", len(formats))
}
return formats[0]
}
func TestParseFormatOpenat(t *testing.T) {
f := mustParseOne(t, FormatOpenat)
if f.Name != "sys_enter_openat" {
t.Errorf("name = %q, want sys_enter_openat", f.Name)
}
if f.ID != 784 {
t.Errorf("ID = %d, want 784", f.ID)
}
if len(f.InternalFields) != 4 {
t.Errorf("internal fields = %d, want 4", len(f.InternalFields))
}
if len(f.ExternalFields) != 5 {
t.Errorf("external fields = %d, want 5", len(f.ExternalFields))
}
if f.ExternalFields[0].Name != "__syscall_nr" {
t.Errorf("first external field = %q, want __syscall_nr", f.ExternalFields[0].Name)
}
if f.ExternalFields[2].Type != "const char *" {
t.Errorf("filename type = %q, want 'const char *'", f.ExternalFields[2].Type)
}
if f.ExternalFields[2].Name != "filename" {
t.Errorf("field 2 name = %q, want filename", f.ExternalFields[2].Name)
}
}
func TestParseFormatExitRead(t *testing.T) {
f := mustParseOne(t, FormatExitRead)
if f.Name != "sys_exit_read" {
t.Errorf("name = %q, want sys_exit_read", f.Name)
}
if f.ID != 843 {
t.Errorf("ID = %d, want 843", f.ID)
}
if len(f.ExternalFields) != 2 {
t.Errorf("external fields = %d, want 2", len(f.ExternalFields))
}
if f.ExternalFields[1].Type != "long" {
t.Errorf("ret type = %q, want long", f.ExternalFields[1].Type)
}
if f.ExternalFields[1].Name != "ret" {
t.Errorf("ret name = %q, want ret", f.ExternalFields[1].Name)
}
if !f.ExternalFields[1].Signed {
t.Error("ret should be signed")
}
}
func TestParseFormatSync(t *testing.T) {
f := mustParseOne(t, FormatSync)
if f.Name != "sys_enter_sync" {
t.Errorf("name = %q, want sys_enter_sync", f.Name)
}
if f.ID != 1027 {
t.Errorf("ID = %d, want 1027", f.ID)
}
if len(f.ExternalFields) != 1 {
t.Errorf("external fields = %d, want 1 (__syscall_nr only)", len(f.ExternalFields))
}
}
func TestParseMultiSection(t *testing.T) {
input := FormatRead + "\n" + FormatExitRead
formats, err := ParseFormats(strings.NewReader(input))
if err != nil {
t.Fatalf("ParseFormats failed: %v", err)
}
if len(formats) != 2 {
t.Fatalf("expected 2 formats, got %d", len(formats))
}
if formats[0].Name != "sys_enter_read" {
t.Errorf("first = %q", formats[0].Name)
}
if formats[1].Name != "sys_exit_read" {
t.Errorf("second = %q", formats[1].Name)
}
}
func TestParseFieldDetails(t *testing.T) {
f := mustParseOne(t, FormatOpenat)
// common_type: internal field
ct := f.InternalFields[0]
if ct.Name != "common_type" || ct.Type != "unsigned short" || ct.Offset != 0 || ct.Size != 2 || ct.Signed {
t.Errorf("common_type = %+v", ct)
}
// dfd: first non-syscall_nr external field
dfd := f.ExternalFields[1]
if dfd.Name != "dfd" || dfd.Type != "int" || dfd.Offset != 16 || dfd.Size != 8 {
t.Errorf("dfd = %+v", dfd)
}
}
func TestFieldNumber(t *testing.T) {
f := mustParseOne(t, FormatOpenat)
if n := f.FieldNumber("filename"); n != 1 {
t.Errorf("FieldNumber(filename) = %d, want 1", n)
}
if n := f.FieldNumber("flags"); n != 2 {
t.Errorf("FieldNumber(flags) = %d, want 2", n)
}
if n := f.FieldNumber("dfd"); n != 0 {
t.Errorf("FieldNumber(dfd) = %d, want 0", n)
}
if n := f.FieldNumber("nonexistent"); n != -1 {
t.Errorf("FieldNumber(nonexistent) = %d, want -1", n)
}
}
func TestFieldNumberFcntl(t *testing.T) {
f := mustParseOne(t, FormatFcntl)
if n := f.FieldNumber("fd"); n != 0 {
t.Errorf("FieldNumber(fd) = %d, want 0", n)
}
if n := f.FieldNumber("cmd"); n != 1 {
t.Errorf("FieldNumber(cmd) = %d, want 1", n)
}
if n := f.FieldNumber("arg"); n != 2 {
t.Errorf("FieldNumber(arg) = %d, want 2", n)
}
}
func TestFieldNumberRename(t *testing.T) {
f := mustParseOne(t, FormatRename)
if n := f.FieldNumber("oldname"); n != 0 {
t.Errorf("FieldNumber(oldname) = %d, want 0", n)
}
if n := f.FieldNumber("newname"); n != 1 {
t.Errorf("FieldNumber(newname) = %d, want 1", n)
}
}
func TestFieldNumberLinkat(t *testing.T) {
f := mustParseOne(t, FormatLinkat)
if n := f.FieldNumber("oldname"); n != 1 {
t.Errorf("FieldNumber(oldname) = %d, want 1", n)
}
if n := f.FieldNumber("newname"); n != 3 {
t.Errorf("FieldNumber(newname) = %d, want 3", n)
}
}
func TestParseFormatError(t *testing.T) {
_, err := ParseFormats(strings.NewReader("field:broken"))
if err == nil {
t.Error("expected error for field without name")
}
}
func TestParseFormatEmptyInput(t *testing.T) {
formats, err := ParseFormats(strings.NewReader(""))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(formats) != 0 {
t.Errorf("expected 0 formats, got %d", len(formats))
}
}
func TestParseFormatIDWithoutName(t *testing.T) {
_, err := ParseFormats(strings.NewReader("ID: 123\n"))
if err == nil {
t.Error("expected error for ID without preceding name")
}
}
func TestParseFormatInvalidID(t *testing.T) {
input := "name: sys_enter_test\nID: notanumber\n"
_, err := ParseFormats(strings.NewReader(input))
if err == nil {
t.Error("expected error for non-numeric ID")
}
}
func TestParseFieldNotEnoughParts(t *testing.T) {
input := "name: sys_enter_test\nID: 100\nfield:unsigned int fd; offset:16\n"
_, err := ParseFormats(strings.NewReader(input))
if err == nil {
t.Error("expected error for field with fewer than 4 semicolons")
}
}
func TestSplitDeclarationEmpty(t *testing.T) {
typePart, namePart := splitDeclaration("")
if typePart != "" || namePart != "" {
t.Errorf("splitDeclaration(\"\") = (%q, %q), want (\"\", \"\")", typePart, namePart)
}
}
|
