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0fb0cc75 | 1 | # Copyright 1997, 1999, 2007, 2008, 2009 Free Software Foundation, Inc. |
74cf1395 JM |
2 | |
3 | # This program is free software; you can redistribute it and/or modify | |
4 | # it under the terms of the GNU General Public License as published by | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
74cf1395 | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
74cf1395 JM |
8 | # This program is distributed in the hope that it will be useful, |
9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | # GNU General Public License for more details. | |
e22f8b7c | 12 | # |
74cf1395 | 13 | # You should have received a copy of the GNU General Public License |
e85a822c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
74cf1395 | 15 | |
e85a822c | 16 | if { [is_remote target] || ![isnative] } then { |
5a2468f5 JM |
17 | continue |
18 | } | |
19 | ||
74cf1395 JM |
20 | set prms_id 0 |
21 | set bug_id 0 | |
22 | ||
e85a822c | 23 | global srcfile |
74cf1395 JM |
24 | set testfile "foll-fork" |
25 | set srcfile ${testfile}.c | |
26 | set binfile ${objdir}/${subdir}/${testfile} | |
27 | ||
28 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
b60f0898 JB |
29 | untested foll-fork.exp |
30 | return -1 | |
74cf1395 JM |
31 | } |
32 | ||
33 | ||
34 | ||
35 | # Until "set follow-fork-mode" and "catch fork" are implemented on | |
36 | # other targets... | |
37 | # | |
e85a822c | 38 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { |
74cf1395 JM |
39 | continue |
40 | } | |
41 | ||
e85a822c DJ |
42 | proc check_fork_catchpoints {} { |
43 | global gdb_prompt | |
44 | ||
45 | # Verify that the system supports "catch fork". | |
46 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "insert first fork catchpoint" | |
47 | set has_fork_catchpoints 0 | |
48 | gdb_test_multiple "continue" "continue to first fork catchpoint" { | |
49 | -re ".*Your system does not support fork catchpoints.*$gdb_prompt $" { | |
50 | unsupported "continue to first fork catchpoint" | |
51 | } | |
52 | -re ".*Catchpoint.*$gdb_prompt $" { | |
53 | set has_fork_catchpoints 1 | |
54 | pass "continue to first fork catchpoint" | |
55 | } | |
56 | } | |
57 | ||
58 | if {$has_fork_catchpoints == 0} { | |
59 | unsupported "fork catchpoints" | |
60 | return -code return | |
61 | } | |
62 | } | |
63 | ||
74cf1395 JM |
64 | proc default_fork_parent_follow {} { |
65 | global gdb_prompt | |
66 | ||
6c95b8df | 67 | send_gdb "show follow-fork\n" |
74cf1395 JM |
68 | gdb_expect { |
69 | -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\ | |
70 | {pass "default show parent follow, no catchpoints"} | |
71 | -re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"} | |
72 | timeout {fail "(timeout) default show parent follow, no catchpoints"} | |
73 | } | |
74 | send_gdb "next 2\n" | |
75 | gdb_expect { | |
76 | -re "Detaching after fork from.*$gdb_prompt $"\ | |
77 | {pass "default parent follow, no catchpoints"} | |
78 | -re "$gdb_prompt $" {fail "default parent follow, no catchpoints"} | |
79 | timeout {fail "(timeout) default parent follow, no catchpoints" } | |
80 | } | |
81 | # The child has been detached; allow time for any output it might | |
82 | # generate to arrive, so that output doesn't get confused with | |
83 | # any expected debugger output from a subsequent testpoint. | |
84 | # | |
85 | exec sleep 1 | |
86 | } | |
87 | ||
88 | proc explicit_fork_parent_follow {} { | |
89 | global gdb_prompt | |
90 | ||
6c95b8df | 91 | send_gdb "set follow-fork parent\n" |
74cf1395 | 92 | gdb_expect { |
6c95b8df PA |
93 | -re "$gdb_prompt $" {pass "set follow-fork parent"} |
94 | timeout {fail "(timeout) set follow-fork parent"} | |
74cf1395 | 95 | } |
6c95b8df | 96 | send_gdb "show follow-fork\n" |
74cf1395 JM |
97 | gdb_expect { |
98 | -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\ | |
99 | {pass "explicit show parent follow, no catchpoints"} | |
100 | -re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"} | |
101 | timeout {fail "(timeout) explicit show parent follow, no catchpoints"} | |
102 | } | |
103 | send_gdb "next 2\n" | |
104 | gdb_expect { | |
105 | -re "Detaching after fork from.*$gdb_prompt $"\ | |
106 | {pass "explicit parent follow, no catchpoints"} | |
107 | -re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"} | |
108 | timeout {fail "(timeout) explicit parent follow, no catchpoints"} | |
109 | } | |
110 | # The child has been detached; allow time for any output it might | |
111 | # generate to arrive, so that output doesn't get confused with | |
112 | # any expected debugger output from a subsequent testpoint. | |
113 | # | |
114 | exec sleep 1 | |
115 | } | |
116 | ||
117 | proc explicit_fork_child_follow {} { | |
118 | global gdb_prompt | |
119 | ||
6c95b8df | 120 | send_gdb "set follow-fork child\n" |
74cf1395 | 121 | gdb_expect { |
6c95b8df PA |
122 | -re "$gdb_prompt $" {pass "set follow-fork child"} |
123 | timeout {fail "(timeout) set follow-fork child"} | |
74cf1395 | 124 | } |
6c95b8df | 125 | send_gdb "show follow-fork\n" |
74cf1395 JM |
126 | gdb_expect { |
127 | -re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\ | |
128 | {pass "explicit show child follow, no catchpoints"} | |
129 | -re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"} | |
130 | timeout {fail "(timeout) explicit show child follow, no catchpoints"} | |
131 | } | |
132 | send_gdb "next 2\n" | |
133 | gdb_expect { | |
6c95b8df | 134 | -re "Attaching after.* fork to.*$gdb_prompt $"\ |
74cf1395 JM |
135 | {pass "explicit child follow, no catchpoints"} |
136 | -re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"} | |
137 | timeout {fail "(timeout) explicit child follow, no catchpoints"} | |
138 | } | |
139 | # The child has been detached; allow time for any output it might | |
140 | # generate to arrive, so that output doesn't get confused with | |
141 | # any gdb_expected debugger output from a subsequent testpoint. | |
142 | # | |
143 | exec sleep 1 | |
144 | } | |
145 | ||
146 | proc catch_fork_child_follow {} { | |
147 | global gdb_prompt | |
e85a822c | 148 | global srcfile |
74cf1395 | 149 | |
b242c3c2 PA |
150 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] |
151 | ||
74cf1395 JM |
152 | send_gdb "catch fork\n" |
153 | gdb_expect { | |
154 | -re "Catchpoint .*(fork).*$gdb_prompt $"\ | |
155 | {pass "explicit child follow, set catch fork"} | |
156 | -re "$gdb_prompt $" {fail "explicit child follow, set catch fork"} | |
157 | timeout {fail "(timeout) explicit child follow, set catch fork"} | |
158 | } | |
159 | ||
160 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
161 | # and further that the catchpoint mentions no process id. | |
162 | # | |
cce89356 JB |
163 | set test_name "info shows catchpoint without pid" |
164 | gdb_test_multiple "info breakpoints" "$test_name" { | |
165 | -re ".*catchpoint.*keep y.*fork\[\r\n\]+$gdb_prompt $" { | |
166 | pass "$test_name" | |
167 | } | |
74cf1395 JM |
168 | } |
169 | ||
170 | send_gdb "continue\n" | |
171 | gdb_expect { | |
a9c64011 | 172 | -re "Catchpoint.*(forked process.*),.*in .*(fork|__kernel_v?syscall).*$gdb_prompt $"\ |
74cf1395 JM |
173 | {pass "explicit child follow, catch fork"} |
174 | -re "$gdb_prompt $" {fail "explicit child follow, catch fork"} | |
175 | timeout {fail "(timeout) explicit child follow, catch fork"} | |
176 | } | |
177 | ||
178 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
179 | # and further that the catchpoint managed to capture a process id. | |
180 | # | |
cce89356 JB |
181 | set test_name "info shows catchpoint without pid" |
182 | gdb_test_multiple "info breakpoints" "$test_name" { | |
183 | -re ".*catchpoint.*keep y.*fork, process.*$gdb_prompt $" { | |
184 | pass "$test_name" | |
185 | } | |
74cf1395 JM |
186 | } |
187 | ||
6c95b8df | 188 | send_gdb "set follow-fork child\n" |
74cf1395 | 189 | gdb_expect { |
6c95b8df PA |
190 | -re "$gdb_prompt $" {pass "set follow-fork child"} |
191 | timeout {fail "(timeout) set follow-fork child"} | |
74cf1395 | 192 | } |
b242c3c2 | 193 | send_gdb "tbreak ${srcfile}:$bp_after_fork\n" |
74cf1395 | 194 | gdb_expect { |
b242c3c2 | 195 | -re "Temporary breakpoint.*, line $bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
196 | {pass "set follow-fork child, tbreak"} |
197 | -re "$gdb_prompt $" {fail "set follow-fork child, tbreak"} | |
198 | timeout {fail "(timeout) set follow-fork child, tbreak"} | |
74cf1395 JM |
199 | } |
200 | send_gdb "continue\n" | |
201 | gdb_expect { | |
6c95b8df PA |
202 | -re "Attaching after.* fork to.* at .*$bp_after_fork.*$gdb_prompt $"\ |
203 | {pass "set follow-fork child, hit tbreak"} | |
204 | -re "$gdb_prompt $" {fail "set follow-fork child, hit tbreak"} | |
205 | timeout {fail "(timeout) set follow-fork child, hit tbreak"} | |
74cf1395 | 206 | } |
b242c3c2 | 207 | # The parent has been detached; allow time for any output it might |
74cf1395 JM |
208 | # generate to arrive, so that output doesn't get confused with |
209 | # any expected debugger output from a subsequent testpoint. | |
210 | # | |
211 | exec sleep 1 | |
212 | send_gdb "delete breakpoints\n" | |
213 | gdb_expect { | |
214 | -re "Delete all breakpoints.*$" { | |
215 | send_gdb "y\n" | |
216 | gdb_expect { | |
217 | -re "$gdb_prompt $"\ | |
6c95b8df PA |
218 | {pass "set follow-fork child, cleanup"} |
219 | timeout {fail "(timeout) set follow-fork child, cleanup"} | |
74cf1395 JM |
220 | } |
221 | } | |
6c95b8df PA |
222 | -re "$gdb_prompt $" {fail "set follow-fork child, cleanup"} |
223 | timeout {fail "(timeout) set follow-fork child, cleanup"} | |
74cf1395 JM |
224 | } |
225 | } | |
226 | ||
b242c3c2 PA |
227 | proc catch_fork_unpatch_child {} { |
228 | global gdb_prompt | |
229 | global srcfile | |
230 | ||
231 | set bp_exit [gdb_get_line_number "at exit"] | |
232 | ||
233 | gdb_test "break callee" "file .*$srcfile, line .*" "unpatch child, break at callee" | |
234 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "unpatch child, set catch fork" | |
235 | ||
236 | gdb_test "continue" \ | |
237 | "Catchpoint.*\\(forked process.*\\).*,.*in .*(fork|__kernel_v?syscall).*" \ | |
238 | "unpatch child, catch fork" | |
239 | ||
240 | # Delete all breakpoints and catchpoints. | |
241 | delete_breakpoints | |
242 | ||
243 | gdb_test "break $bp_exit" \ | |
244 | "Breakpoint .*file .*$srcfile, line .*" \ | |
245 | "unpatch child, breakpoint at exit call" | |
246 | ||
6c95b8df | 247 | gdb_test "set follow-fork child" "" "unpatch child, set follow-fork child" |
b242c3c2 PA |
248 | |
249 | set test "unpatch child, unpatched parent breakpoints from child" | |
250 | gdb_test_multiple "continue" $test { | |
251 | -re "at exit.*$gdb_prompt $" { | |
252 | pass "$test" | |
253 | } | |
254 | -re "SIGTRAP.*$gdb_prompt $" { | |
255 | fail "$test" | |
256 | ||
257 | # Explicitly kill this child, so we can continue gracefully | |
258 | # with further testing... | |
259 | send_gdb "kill\n" | |
260 | gdb_expect { | |
261 | -re ".*Kill the program being debugged.*y or n. $" { | |
262 | send_gdb "y\n" | |
263 | gdb_expect -re "$gdb_prompt $" {} | |
264 | } | |
265 | } | |
266 | } | |
267 | -re ".*$gdb_prompt $" { | |
268 | fail "$test (unknown output)" | |
269 | } | |
270 | timeout { | |
271 | fail "$test (timeout)" | |
272 | } | |
273 | } | |
274 | } | |
275 | ||
74cf1395 JM |
276 | proc tcatch_fork_parent_follow {} { |
277 | global gdb_prompt | |
e85a822c | 278 | global srcfile |
74cf1395 | 279 | |
b242c3c2 PA |
280 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] |
281 | ||
74cf1395 JM |
282 | send_gdb "catch fork\n" |
283 | gdb_expect { | |
284 | -re "Catchpoint .*(fork).*$gdb_prompt $"\ | |
285 | {pass "explicit parent follow, set tcatch fork"} | |
286 | -re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"} | |
287 | timeout {fail "(timeout) explicit parent follow, set tcatch fork"} | |
288 | } | |
289 | # ??rehrauer: I don't yet know how to get the id of the tcatch | |
290 | # via this script, so that I can add a -do list to it. For now, | |
291 | # do the follow stuff after the catch happens. | |
292 | ||
293 | send_gdb "continue\n" | |
294 | gdb_expect { | |
a9c64011 | 295 | -re ".*in .*(fork|__kernel_v?syscall).*$gdb_prompt $"\ |
74cf1395 JM |
296 | {pass "explicit parent follow, tcatch fork"} |
297 | -re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"} | |
298 | timeout {fail "(timeout) explicit parent follow, tcatch fork"} | |
299 | } | |
6c95b8df | 300 | send_gdb "set follow-fork parent\n" |
74cf1395 | 301 | gdb_expect { |
6c95b8df PA |
302 | -re "$gdb_prompt $" {pass "set follow-fork parent"} |
303 | timeout {fail "(timeout) set follow-fork parent"} | |
74cf1395 | 304 | } |
b242c3c2 | 305 | send_gdb "tbreak ${srcfile}:$bp_after_fork\n" |
74cf1395 | 306 | gdb_expect { |
b242c3c2 | 307 | -re "Temporary breakpoint.*, line $bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
308 | {pass "set follow-fork parent, tbreak"} |
309 | -re "$gdb_prompt $" {fail "set follow-fork parent, tbreak"} | |
310 | timeout {fail "(timeout) set follow-fork child, tbreak"} | |
74cf1395 JM |
311 | } |
312 | send_gdb "continue\n" | |
313 | gdb_expect { | |
b242c3c2 | 314 | -re ".*Detaching after fork from.* at .*$bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
315 | {pass "set follow-fork parent, hit tbreak"} |
316 | -re "$gdb_prompt $" {fail "set follow-fork parent, hit tbreak"} | |
317 | timeout {fail "(timeout) set follow-fork parent, hit tbreak"} | |
74cf1395 JM |
318 | } |
319 | # The child has been detached; allow time for any output it might | |
320 | # generate to arrive, so that output doesn't get confused with | |
321 | # any expected debugger output from a subsequent testpoint. | |
322 | # | |
323 | exec sleep 1 | |
324 | send_gdb "delete breakpoints\n" | |
325 | gdb_expect { | |
326 | -re "Delete all breakpoints.*$" { | |
327 | send_gdb "y\n" | |
328 | gdb_expect { | |
329 | -re "$gdb_prompt $"\ | |
6c95b8df PA |
330 | {pass "set follow-fork parent, cleanup"} |
331 | timeout {fail "(timeout) set follow-fork parent, cleanup"} | |
74cf1395 JM |
332 | } |
333 | } | |
6c95b8df PA |
334 | -re "$gdb_prompt $" {fail "set follow-fork parent, cleanup"} |
335 | timeout {fail "(timeout) set follow-fork parent, cleanup"} | |
74cf1395 JM |
336 | } |
337 | } | |
338 | ||
339 | proc do_fork_tests {} { | |
340 | global gdb_prompt | |
341 | ||
342 | # Verify that help is available for "set follow-fork-mode". | |
343 | # | |
344 | send_gdb "help set follow-fork-mode\n" | |
345 | gdb_expect { | |
346 | -re "Set debugger response to a program call of fork or vfork..* | |
347 | A fork or vfork creates a new process. follow-fork-mode can be:.* | |
348 | .*parent - the original process is debugged after a fork.* | |
349 | .*child - the new process is debugged after a fork.* | |
ef04f396 | 350 | The unfollowed process will continue to run..* |
74cf1395 | 351 | By default, the debugger will follow the parent process..*$gdb_prompt $"\ |
6c95b8df | 352 | { pass "help set follow-fork" } |
74cf1395 | 353 | -re "$gdb_prompt $" { fail "help set follow" } |
6c95b8df | 354 | timeout { fail "(timeout) help set follow-fork" } |
74cf1395 JM |
355 | } |
356 | ||
357 | # Verify that we can set follow-fork-mode, using an abbreviation | |
358 | # for both the flag and its value. | |
359 | # | |
6c95b8df PA |
360 | send_gdb "set follow-fork ch\n" |
361 | send_gdb "show follow-fork\n" | |
74cf1395 JM |
362 | gdb_expect { |
363 | -re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\ | |
6c95b8df PA |
364 | {pass "set follow-fork, using abbreviations"} |
365 | timeout {fail "(timeout) set follow-fork, using abbreviations"} | |
74cf1395 JM |
366 | } |
367 | ||
368 | # Verify that we cannot set follow-fork-mode to nonsense. | |
369 | # | |
6c95b8df | 370 | send_gdb "set follow-fork chork\n" |
74cf1395 JM |
371 | gdb_expect { |
372 | -re "Undefined item: \"chork\".*$gdb_prompt $"\ | |
6c95b8df PA |
373 | {pass "set follow-fork to nonsense is prohibited"} |
374 | -re "$gdb_prompt $" {fail "set follow-fork to nonsense is prohibited"} | |
375 | timeout {fail "(timeout) set follow-fork to nonsense is prohibited"} | |
74cf1395 | 376 | } |
6c95b8df | 377 | send_gdb "set follow-fork parent\n" |
74cf1395 | 378 | gdb_expect { |
6c95b8df PA |
379 | -re "$gdb_prompt $" {pass "set follow-fork to nonsense is prohibited (reset parent)"} |
380 | timeout {fail "set follow-fork to nonsense is prohibited (reset parent)"} | |
74cf1395 JM |
381 | } |
382 | ||
e85a822c DJ |
383 | # Check that fork catchpoints are supported, as an indicator for whether |
384 | # fork-following is supported. | |
385 | if [runto_main] then { check_fork_catchpoints } | |
386 | ||
74cf1395 JM |
387 | # Test the default behaviour, which is to follow the parent of a |
388 | # fork, and detach from the child. Do this without catchpoints. | |
389 | # | |
390 | if [runto_main] then { default_fork_parent_follow } | |
391 | ||
392 | # Test the ability to explicitly follow the parent of a fork, and | |
393 | # detach from the child. Do this without catchpoints. | |
394 | # | |
395 | if [runto_main] then { explicit_fork_parent_follow } | |
396 | ||
397 | # Test the ability to follow the child of a fork, and detach from | |
398 | # the parent. Do this without catchpoints. | |
399 | # | |
400 | if [runto_main] then { explicit_fork_child_follow } | |
401 | ||
402 | # Test the ability to follow both child and parent of a fork. Do | |
403 | # this without catchpoints. | |
404 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
405 | # | |
406 | ||
407 | # Test the ability to have the debugger ask the user at fork-time | |
408 | # whether to follow the parent, child or both. Do this without | |
409 | # catchpoints. | |
410 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
411 | # | |
412 | ||
413 | # Test the ability to catch a fork, specify that the child be | |
414 | # followed, and continue. Make the catchpoint permanent. | |
415 | # | |
416 | if [runto_main] then { catch_fork_child_follow } | |
417 | ||
b242c3c2 PA |
418 | # Test that parent breakpoints are successfully detached from the |
419 | # child at fork time, even if the user removes them from the | |
420 | # breakpoints list after stopping at a fork catchpoint. | |
421 | if [runto_main] then { catch_fork_unpatch_child } | |
422 | ||
74cf1395 JM |
423 | # Test the ability to catch a fork, specify via a -do clause that |
424 | # the parent be followed, and continue. Make the catchpoint temporary. | |
425 | # | |
426 | if [runto_main] then { tcatch_fork_parent_follow } | |
427 | } | |
428 | ||
429 | # Start with a fresh gdb | |
430 | ||
431 | gdb_exit | |
432 | gdb_start | |
433 | gdb_reinitialize_dir $srcdir/$subdir | |
434 | gdb_load ${binfile} | |
435 | ||
e85a822c DJ |
436 | # The "Detaching..." and "Attaching..." messages may be hidden by |
437 | # default. | |
438 | gdb_test "set verbose" "" | |
74cf1395 JM |
439 | |
440 | # This is a test of gdb's ability to follow the parent, child or both | |
441 | # parent and child of a Unix fork() system call. | |
442 | # | |
443 | do_fork_tests | |
444 | ||
445 | return 0 |