|
| 1 | +/// Use setup_timer function instead of initializing timer with the function |
| 2 | +/// and data fields |
| 3 | +// Confidence: High |
| 4 | +// Copyright: (C) 2016 Vaishali Thakkar, Oracle. GPLv2 |
| 5 | +// Options: --no-includes --include-headers |
| 6 | +// Keywords: init_timer, setup_timer |
| 7 | + |
| 8 | +virtual patch |
| 9 | +virtual context |
| 10 | +virtual org |
| 11 | +virtual report |
| 12 | + |
| 13 | +@match_immediate_function_data_after_init_timer |
| 14 | +depends on patch && !context && !org && !report@ |
| 15 | +expression e, func, da; |
| 16 | +@@ |
| 17 | +
|
| 18 | +-init_timer (&e); |
| 19 | ++setup_timer (&e, func, da); |
| 20 | +
|
| 21 | +( |
| 22 | +-e.function = func; |
| 23 | +-e.data = da; |
| 24 | +| |
| 25 | +-e.data = da; |
| 26 | +-e.function = func; |
| 27 | +) |
| 28 | +
|
| 29 | +@match_function_and_data_after_init_timer |
| 30 | +depends on patch && !context && !org && !report@ |
| 31 | +expression e1, e2, e3, e4, e5, a, b; |
| 32 | +@@ |
| 33 | + |
| 34 | +-init_timer (&e1); |
| 35 | ++setup_timer (&e1, a, b); |
| 36 | + |
| 37 | +... when != a = e2 |
| 38 | + when != b = e3 |
| 39 | +( |
| 40 | +-e1.function = a; |
| 41 | +... when != b = e4 |
| 42 | +-e1.data = b; |
| 43 | +| |
| 44 | +-e1.data = b; |
| 45 | +... when != a = e5 |
| 46 | +-e1.function = a; |
| 47 | +) |
| 48 | + |
| 49 | +@r1 exists@ |
| 50 | +identifier f; |
| 51 | +position p; |
| 52 | +@@ |
| 53 | + |
| 54 | +f(...) { ... when any |
| 55 | + init_timer@p(...) |
| 56 | + ... when any |
| 57 | +} |
| 58 | + |
| 59 | +@r2 exists@ |
| 60 | +identifier g != r1.f; |
| 61 | +struct timer_list t; |
| 62 | +expression e8; |
| 63 | +@@ |
| 64 | + |
| 65 | +g(...) { ... when any |
| 66 | + t.data = e8 |
| 67 | + ... when any |
| 68 | +} |
| 69 | + |
| 70 | +// It is dangerous to use setup_timer if data field is initialized |
| 71 | +// in another function. |
| 72 | + |
| 73 | +@script:python depends on r2@ |
| 74 | +p << r1.p; |
| 75 | +@@ |
| 76 | +
|
| 77 | +cocci.include_match(False) |
| 78 | +
|
| 79 | +@r3 depends on patch && !context && !org && !report@ |
| 80 | +expression e6, e7, c; |
| 81 | +position r1.p; |
| 82 | +@@ |
| 83 | + |
| 84 | +-init_timer@p (&e6); |
| 85 | ++setup_timer (&e6, c, 0UL); |
| 86 | +... when != c = e7 |
| 87 | +-e6.function = c; |
| 88 | + |
| 89 | +// ---------------------------------------------------------------------------- |
| 90 | + |
| 91 | +@match_immediate_function_data_after_init_timer_context |
| 92 | +depends on !patch && (context || org || report)@ |
| 93 | +expression da, e, func; |
| 94 | +position j0, j1, j2; |
| 95 | +@@ |
| 96 | +
|
| 97 | +* init_timer@j0 (&e); |
| 98 | +( |
| 99 | + |
| 100 | + |
| 101 | +| |
| 102 | + |
| 103 | + |
| 104 | +) |
| 105 | +
|
| 106 | +@match_function_and_data_after_init_timer_context |
| 107 | +depends on !patch && |
| 108 | +!match_immediate_function_data_after_init_timer_context && |
| 109 | +(context || org || report)@ |
| 110 | +expression a, b, e1, e2, e3, e4, e5; |
| 111 | +position j0, j1, j2; |
| 112 | +@@ |
| 113 | + |
| 114 | +* init_timer@j0 (&e1); |
| 115 | +... when != a = e2 |
| 116 | + when != b = e3 |
| 117 | +( |
| 118 | + |
| 119 | +... when != b = e4 |
| 120 | + |
| 121 | +| |
| 122 | + |
| 123 | +... when != a = e5 |
| 124 | + |
| 125 | +) |
| 126 | + |
| 127 | +@r3_context depends on !patch && |
| 128 | +!match_immediate_function_data_after_init_timer_context && |
| 129 | +!match_function_and_data_after_init_timer_context && |
| 130 | +(context || org || report)@ |
| 131 | +expression c, e6, e7; |
| 132 | +position r1.p; |
| 133 | +position j0, j1; |
| 134 | +@@ |
| 135 | +
|
| 136 | +* init_timer@j0@p (&e6); |
| 137 | +... when != c = e7 |
| 138 | + |
| 139 | +
|
| 140 | +// ---------------------------------------------------------------------------- |
| 141 | +
|
| 142 | +@script:python match_immediate_function_data_after_init_timer_org |
| 143 | +depends on org@ |
| 144 | +j0 << match_immediate_function_data_after_init_timer_context.j0; |
| 145 | +j1 << match_immediate_function_data_after_init_timer_context.j1; |
| 146 | +j2 << match_immediate_function_data_after_init_timer_context.j2; |
| 147 | +@@ |
| 148 | + |
| 149 | +msg = "Use setup_timer function." |
| 150 | +coccilib.org.print_todo(j0[0], msg) |
| 151 | +coccilib.org.print_link(j1[0], "") |
| 152 | +coccilib.org.print_link(j2[0], "") |
| 153 | + |
| 154 | +@script:python match_function_and_data_after_init_timer_org depends on org@ |
| 155 | +j0 << match_function_and_data_after_init_timer_context.j0; |
| 156 | +j1 << match_function_and_data_after_init_timer_context.j1; |
| 157 | +j2 << match_function_and_data_after_init_timer_context.j2; |
| 158 | +@@ |
| 159 | +
|
| 160 | +msg = "Use setup_timer function." |
| 161 | +coccilib.org.print_todo(j0[0], msg) |
| 162 | +coccilib.org.print_link(j1[0], "") |
| 163 | +coccilib.org.print_link(j2[0], "") |
| 164 | +
|
| 165 | +@script:python r3_org depends on org@ |
| 166 | +j0 << r3_context.j0; |
| 167 | +j1 << r3_context.j1; |
| 168 | +@@ |
| 169 | +
|
| 170 | +msg = "Use setup_timer function." |
| 171 | +coccilib.org.print_todo(j0[0], msg) |
| 172 | +coccilib.org.print_link(j1[0], "") |
| 173 | +
|
| 174 | +// ---------------------------------------------------------------------------- |
| 175 | +
|
| 176 | +@script:python match_immediate_function_data_after_init_timer_report |
| 177 | +depends on report@ |
| 178 | +j0 << match_immediate_function_data_after_init_timer_context.j0; |
| 179 | +j1 << match_immediate_function_data_after_init_timer_context.j1; |
| 180 | +@@ |
| 181 | +
|
| 182 | +msg = "Use setup_timer function for function on line %s." % (j1[0].line) |
| 183 | +coccilib.report.print_report(j0[0], msg) |
| 184 | +
|
| 185 | +@script:python match_function_and_data_after_init_timer_report depends on report@ |
| 186 | +j0 << match_function_and_data_after_init_timer_context.j0; |
| 187 | +j1 << match_function_and_data_after_init_timer_context.j1; |
| 188 | +@@ |
| 189 | + |
| 190 | +msg = "Use setup_timer function for function on line %s." % (j1[0].line) |
| 191 | +coccilib.report.print_report(j0[0], msg) |
| 192 | + |
| 193 | +@script:python r3_report depends on report@ |
| 194 | +j0 << r3_context.j0; |
| 195 | +j1 << r3_context.j1; |
| 196 | +@@ |
| 197 | +
|
| 198 | +msg = "Use setup_timer function for function on line %s." % (j1[0].line) |
| 199 | +coccilib.report.print_report(j0[0], msg) |
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