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4c38e0a4 JB |
1 | # Copyright 1997, 1999, 2007, 2008, 2009, 2010 |
2 | # Free Software Foundation, Inc. | |
74cf1395 JM |
3 | |
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License as published by | |
e22f8b7c | 6 | # the Free Software Foundation; either version 3 of the License, or |
74cf1395 | 7 | # (at your option) any later version. |
e22f8b7c | 8 | # |
74cf1395 JM |
9 | # This program is distributed in the hope that it will be useful, |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU General Public License for more details. | |
e22f8b7c | 13 | # |
74cf1395 | 14 | # You should have received a copy of the GNU General Public License |
e85a822c | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
74cf1395 | 16 | |
e85a822c | 17 | if { [is_remote target] || ![isnative] } then { |
5a2468f5 JM |
18 | continue |
19 | } | |
20 | ||
74cf1395 JM |
21 | set prms_id 0 |
22 | set bug_id 0 | |
23 | ||
e85a822c | 24 | global srcfile |
74cf1395 JM |
25 | set testfile "foll-fork" |
26 | set srcfile ${testfile}.c | |
27 | set binfile ${objdir}/${subdir}/${testfile} | |
28 | ||
29 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
b60f0898 JB |
30 | untested foll-fork.exp |
31 | return -1 | |
74cf1395 JM |
32 | } |
33 | ||
34 | ||
35 | ||
36 | # Until "set follow-fork-mode" and "catch fork" are implemented on | |
37 | # other targets... | |
38 | # | |
e85a822c | 39 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { |
74cf1395 JM |
40 | continue |
41 | } | |
42 | ||
e85a822c DJ |
43 | proc check_fork_catchpoints {} { |
44 | global gdb_prompt | |
45 | ||
46 | # Verify that the system supports "catch fork". | |
47 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "insert first fork catchpoint" | |
48 | set has_fork_catchpoints 0 | |
49 | gdb_test_multiple "continue" "continue to first fork catchpoint" { | |
50 | -re ".*Your system does not support fork catchpoints.*$gdb_prompt $" { | |
51 | unsupported "continue to first fork catchpoint" | |
52 | } | |
53 | -re ".*Catchpoint.*$gdb_prompt $" { | |
54 | set has_fork_catchpoints 1 | |
55 | pass "continue to first fork catchpoint" | |
56 | } | |
57 | } | |
58 | ||
59 | if {$has_fork_catchpoints == 0} { | |
60 | unsupported "fork catchpoints" | |
61 | return -code return | |
62 | } | |
63 | } | |
64 | ||
74cf1395 JM |
65 | proc default_fork_parent_follow {} { |
66 | global gdb_prompt | |
67 | ||
6c95b8df | 68 | send_gdb "show follow-fork\n" |
74cf1395 JM |
69 | gdb_expect { |
70 | -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\ | |
71 | {pass "default show parent follow, no catchpoints"} | |
72 | -re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"} | |
73 | timeout {fail "(timeout) default show parent follow, no catchpoints"} | |
74 | } | |
75 | send_gdb "next 2\n" | |
76 | gdb_expect { | |
77 | -re "Detaching after fork from.*$gdb_prompt $"\ | |
78 | {pass "default parent follow, no catchpoints"} | |
79 | -re "$gdb_prompt $" {fail "default parent follow, no catchpoints"} | |
80 | timeout {fail "(timeout) default parent follow, no catchpoints" } | |
81 | } | |
82 | # The child has been detached; allow time for any output it might | |
83 | # generate to arrive, so that output doesn't get confused with | |
84 | # any expected debugger output from a subsequent testpoint. | |
85 | # | |
86 | exec sleep 1 | |
87 | } | |
88 | ||
89 | proc explicit_fork_parent_follow {} { | |
90 | global gdb_prompt | |
91 | ||
6c95b8df | 92 | send_gdb "set follow-fork parent\n" |
74cf1395 | 93 | gdb_expect { |
6c95b8df PA |
94 | -re "$gdb_prompt $" {pass "set follow-fork parent"} |
95 | timeout {fail "(timeout) set follow-fork parent"} | |
74cf1395 | 96 | } |
6c95b8df | 97 | send_gdb "show follow-fork\n" |
74cf1395 JM |
98 | gdb_expect { |
99 | -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\ | |
100 | {pass "explicit show parent follow, no catchpoints"} | |
101 | -re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"} | |
102 | timeout {fail "(timeout) explicit show parent follow, no catchpoints"} | |
103 | } | |
104 | send_gdb "next 2\n" | |
105 | gdb_expect { | |
106 | -re "Detaching after fork from.*$gdb_prompt $"\ | |
107 | {pass "explicit parent follow, no catchpoints"} | |
108 | -re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"} | |
109 | timeout {fail "(timeout) explicit parent follow, no catchpoints"} | |
110 | } | |
111 | # The child has been detached; allow time for any output it might | |
112 | # generate to arrive, so that output doesn't get confused with | |
113 | # any expected debugger output from a subsequent testpoint. | |
114 | # | |
115 | exec sleep 1 | |
116 | } | |
117 | ||
118 | proc explicit_fork_child_follow {} { | |
119 | global gdb_prompt | |
120 | ||
6c95b8df | 121 | send_gdb "set follow-fork child\n" |
74cf1395 | 122 | gdb_expect { |
6c95b8df PA |
123 | -re "$gdb_prompt $" {pass "set follow-fork child"} |
124 | timeout {fail "(timeout) set follow-fork child"} | |
74cf1395 | 125 | } |
6c95b8df | 126 | send_gdb "show follow-fork\n" |
74cf1395 JM |
127 | gdb_expect { |
128 | -re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\ | |
129 | {pass "explicit show child follow, no catchpoints"} | |
130 | -re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"} | |
131 | timeout {fail "(timeout) explicit show child follow, no catchpoints"} | |
132 | } | |
133 | send_gdb "next 2\n" | |
134 | gdb_expect { | |
6c95b8df | 135 | -re "Attaching after.* fork to.*$gdb_prompt $"\ |
74cf1395 JM |
136 | {pass "explicit child follow, no catchpoints"} |
137 | -re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"} | |
138 | timeout {fail "(timeout) explicit child follow, no catchpoints"} | |
139 | } | |
140 | # The child has been detached; allow time for any output it might | |
141 | # generate to arrive, so that output doesn't get confused with | |
142 | # any gdb_expected debugger output from a subsequent testpoint. | |
143 | # | |
144 | exec sleep 1 | |
145 | } | |
146 | ||
147 | proc catch_fork_child_follow {} { | |
148 | global gdb_prompt | |
e85a822c | 149 | global srcfile |
74cf1395 | 150 | |
b242c3c2 PA |
151 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] |
152 | ||
74cf1395 JM |
153 | send_gdb "catch fork\n" |
154 | gdb_expect { | |
155 | -re "Catchpoint .*(fork).*$gdb_prompt $"\ | |
156 | {pass "explicit child follow, set catch fork"} | |
157 | -re "$gdb_prompt $" {fail "explicit child follow, set catch fork"} | |
158 | timeout {fail "(timeout) explicit child follow, set catch fork"} | |
159 | } | |
160 | ||
161 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
162 | # and further that the catchpoint mentions no process id. | |
163 | # | |
cce89356 JB |
164 | set test_name "info shows catchpoint without pid" |
165 | gdb_test_multiple "info breakpoints" "$test_name" { | |
166 | -re ".*catchpoint.*keep y.*fork\[\r\n\]+$gdb_prompt $" { | |
167 | pass "$test_name" | |
168 | } | |
74cf1395 JM |
169 | } |
170 | ||
171 | send_gdb "continue\n" | |
172 | gdb_expect { | |
a9c64011 | 173 | -re "Catchpoint.*(forked process.*),.*in .*(fork|__kernel_v?syscall).*$gdb_prompt $"\ |
74cf1395 JM |
174 | {pass "explicit child follow, catch fork"} |
175 | -re "$gdb_prompt $" {fail "explicit child follow, catch fork"} | |
176 | timeout {fail "(timeout) explicit child follow, catch fork"} | |
177 | } | |
178 | ||
179 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
180 | # and further that the catchpoint managed to capture a process id. | |
181 | # | |
cce89356 JB |
182 | set test_name "info shows catchpoint without pid" |
183 | gdb_test_multiple "info breakpoints" "$test_name" { | |
184 | -re ".*catchpoint.*keep y.*fork, process.*$gdb_prompt $" { | |
185 | pass "$test_name" | |
186 | } | |
74cf1395 JM |
187 | } |
188 | ||
6c95b8df | 189 | send_gdb "set follow-fork child\n" |
74cf1395 | 190 | gdb_expect { |
6c95b8df PA |
191 | -re "$gdb_prompt $" {pass "set follow-fork child"} |
192 | timeout {fail "(timeout) set follow-fork child"} | |
74cf1395 | 193 | } |
b242c3c2 | 194 | send_gdb "tbreak ${srcfile}:$bp_after_fork\n" |
74cf1395 | 195 | gdb_expect { |
b242c3c2 | 196 | -re "Temporary breakpoint.*, line $bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
197 | {pass "set follow-fork child, tbreak"} |
198 | -re "$gdb_prompt $" {fail "set follow-fork child, tbreak"} | |
199 | timeout {fail "(timeout) set follow-fork child, tbreak"} | |
74cf1395 JM |
200 | } |
201 | send_gdb "continue\n" | |
202 | gdb_expect { | |
6c95b8df PA |
203 | -re "Attaching after.* fork to.* at .*$bp_after_fork.*$gdb_prompt $"\ |
204 | {pass "set follow-fork child, hit tbreak"} | |
205 | -re "$gdb_prompt $" {fail "set follow-fork child, hit tbreak"} | |
206 | timeout {fail "(timeout) set follow-fork child, hit tbreak"} | |
74cf1395 | 207 | } |
b242c3c2 | 208 | # The parent has been detached; allow time for any output it might |
74cf1395 JM |
209 | # generate to arrive, so that output doesn't get confused with |
210 | # any expected debugger output from a subsequent testpoint. | |
211 | # | |
212 | exec sleep 1 | |
213 | send_gdb "delete breakpoints\n" | |
214 | gdb_expect { | |
215 | -re "Delete all breakpoints.*$" { | |
216 | send_gdb "y\n" | |
217 | gdb_expect { | |
218 | -re "$gdb_prompt $"\ | |
6c95b8df PA |
219 | {pass "set follow-fork child, cleanup"} |
220 | timeout {fail "(timeout) set follow-fork child, cleanup"} | |
74cf1395 JM |
221 | } |
222 | } | |
6c95b8df PA |
223 | -re "$gdb_prompt $" {fail "set follow-fork child, cleanup"} |
224 | timeout {fail "(timeout) set follow-fork child, cleanup"} | |
74cf1395 JM |
225 | } |
226 | } | |
227 | ||
b242c3c2 PA |
228 | proc catch_fork_unpatch_child {} { |
229 | global gdb_prompt | |
230 | global srcfile | |
231 | ||
232 | set bp_exit [gdb_get_line_number "at exit"] | |
233 | ||
234 | gdb_test "break callee" "file .*$srcfile, line .*" "unpatch child, break at callee" | |
235 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "unpatch child, set catch fork" | |
236 | ||
237 | gdb_test "continue" \ | |
238 | "Catchpoint.*\\(forked process.*\\).*,.*in .*(fork|__kernel_v?syscall).*" \ | |
239 | "unpatch child, catch fork" | |
240 | ||
241 | # Delete all breakpoints and catchpoints. | |
242 | delete_breakpoints | |
243 | ||
d7167b4c JK |
244 | # Force $srcfile as the current GDB source can be in glibc sourcetree. |
245 | gdb_test "break $srcfile:$bp_exit" \ | |
b242c3c2 PA |
246 | "Breakpoint .*file .*$srcfile, line .*" \ |
247 | "unpatch child, breakpoint at exit call" | |
248 | ||
6c95b8df | 249 | gdb_test "set follow-fork child" "" "unpatch child, set follow-fork child" |
b242c3c2 PA |
250 | |
251 | set test "unpatch child, unpatched parent breakpoints from child" | |
252 | gdb_test_multiple "continue" $test { | |
253 | -re "at exit.*$gdb_prompt $" { | |
254 | pass "$test" | |
255 | } | |
256 | -re "SIGTRAP.*$gdb_prompt $" { | |
257 | fail "$test" | |
258 | ||
259 | # Explicitly kill this child, so we can continue gracefully | |
260 | # with further testing... | |
261 | send_gdb "kill\n" | |
262 | gdb_expect { | |
263 | -re ".*Kill the program being debugged.*y or n. $" { | |
264 | send_gdb "y\n" | |
265 | gdb_expect -re "$gdb_prompt $" {} | |
266 | } | |
267 | } | |
268 | } | |
269 | -re ".*$gdb_prompt $" { | |
270 | fail "$test (unknown output)" | |
271 | } | |
272 | timeout { | |
273 | fail "$test (timeout)" | |
274 | } | |
275 | } | |
276 | } | |
277 | ||
74cf1395 JM |
278 | proc tcatch_fork_parent_follow {} { |
279 | global gdb_prompt | |
e85a822c | 280 | global srcfile |
74cf1395 | 281 | |
b242c3c2 PA |
282 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] |
283 | ||
74cf1395 JM |
284 | send_gdb "catch fork\n" |
285 | gdb_expect { | |
286 | -re "Catchpoint .*(fork).*$gdb_prompt $"\ | |
287 | {pass "explicit parent follow, set tcatch fork"} | |
288 | -re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"} | |
289 | timeout {fail "(timeout) explicit parent follow, set tcatch fork"} | |
290 | } | |
291 | # ??rehrauer: I don't yet know how to get the id of the tcatch | |
292 | # via this script, so that I can add a -do list to it. For now, | |
293 | # do the follow stuff after the catch happens. | |
294 | ||
295 | send_gdb "continue\n" | |
296 | gdb_expect { | |
a9c64011 | 297 | -re ".*in .*(fork|__kernel_v?syscall).*$gdb_prompt $"\ |
74cf1395 JM |
298 | {pass "explicit parent follow, tcatch fork"} |
299 | -re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"} | |
300 | timeout {fail "(timeout) explicit parent follow, tcatch fork"} | |
301 | } | |
6c95b8df | 302 | send_gdb "set follow-fork parent\n" |
74cf1395 | 303 | gdb_expect { |
6c95b8df PA |
304 | -re "$gdb_prompt $" {pass "set follow-fork parent"} |
305 | timeout {fail "(timeout) set follow-fork parent"} | |
74cf1395 | 306 | } |
b242c3c2 | 307 | send_gdb "tbreak ${srcfile}:$bp_after_fork\n" |
74cf1395 | 308 | gdb_expect { |
b242c3c2 | 309 | -re "Temporary breakpoint.*, line $bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
310 | {pass "set follow-fork parent, tbreak"} |
311 | -re "$gdb_prompt $" {fail "set follow-fork parent, tbreak"} | |
312 | timeout {fail "(timeout) set follow-fork child, tbreak"} | |
74cf1395 JM |
313 | } |
314 | send_gdb "continue\n" | |
315 | gdb_expect { | |
b242c3c2 | 316 | -re ".*Detaching after fork from.* at .*$bp_after_fork.*$gdb_prompt $"\ |
6c95b8df PA |
317 | {pass "set follow-fork parent, hit tbreak"} |
318 | -re "$gdb_prompt $" {fail "set follow-fork parent, hit tbreak"} | |
319 | timeout {fail "(timeout) set follow-fork parent, hit tbreak"} | |
74cf1395 JM |
320 | } |
321 | # The child has been detached; allow time for any output it might | |
322 | # generate to arrive, so that output doesn't get confused with | |
323 | # any expected debugger output from a subsequent testpoint. | |
324 | # | |
325 | exec sleep 1 | |
326 | send_gdb "delete breakpoints\n" | |
327 | gdb_expect { | |
328 | -re "Delete all breakpoints.*$" { | |
329 | send_gdb "y\n" | |
330 | gdb_expect { | |
331 | -re "$gdb_prompt $"\ | |
6c95b8df PA |
332 | {pass "set follow-fork parent, cleanup"} |
333 | timeout {fail "(timeout) set follow-fork parent, cleanup"} | |
74cf1395 JM |
334 | } |
335 | } | |
6c95b8df PA |
336 | -re "$gdb_prompt $" {fail "set follow-fork parent, cleanup"} |
337 | timeout {fail "(timeout) set follow-fork parent, cleanup"} | |
74cf1395 JM |
338 | } |
339 | } | |
340 | ||
341 | proc do_fork_tests {} { | |
342 | global gdb_prompt | |
343 | ||
344 | # Verify that help is available for "set follow-fork-mode". | |
345 | # | |
346 | send_gdb "help set follow-fork-mode\n" | |
347 | gdb_expect { | |
348 | -re "Set debugger response to a program call of fork or vfork..* | |
349 | A fork or vfork creates a new process. follow-fork-mode can be:.* | |
350 | .*parent - the original process is debugged after a fork.* | |
351 | .*child - the new process is debugged after a fork.* | |
ef04f396 | 352 | The unfollowed process will continue to run..* |
74cf1395 | 353 | By default, the debugger will follow the parent process..*$gdb_prompt $"\ |
6c95b8df | 354 | { pass "help set follow-fork" } |
74cf1395 | 355 | -re "$gdb_prompt $" { fail "help set follow" } |
6c95b8df | 356 | timeout { fail "(timeout) help set follow-fork" } |
74cf1395 JM |
357 | } |
358 | ||
359 | # Verify that we can set follow-fork-mode, using an abbreviation | |
360 | # for both the flag and its value. | |
361 | # | |
6c95b8df PA |
362 | send_gdb "set follow-fork ch\n" |
363 | send_gdb "show follow-fork\n" | |
74cf1395 JM |
364 | gdb_expect { |
365 | -re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\ | |
6c95b8df PA |
366 | {pass "set follow-fork, using abbreviations"} |
367 | timeout {fail "(timeout) set follow-fork, using abbreviations"} | |
74cf1395 JM |
368 | } |
369 | ||
370 | # Verify that we cannot set follow-fork-mode to nonsense. | |
371 | # | |
6c95b8df | 372 | send_gdb "set follow-fork chork\n" |
74cf1395 JM |
373 | gdb_expect { |
374 | -re "Undefined item: \"chork\".*$gdb_prompt $"\ | |
6c95b8df PA |
375 | {pass "set follow-fork to nonsense is prohibited"} |
376 | -re "$gdb_prompt $" {fail "set follow-fork to nonsense is prohibited"} | |
377 | timeout {fail "(timeout) set follow-fork to nonsense is prohibited"} | |
74cf1395 | 378 | } |
6c95b8df | 379 | send_gdb "set follow-fork parent\n" |
74cf1395 | 380 | gdb_expect { |
6c95b8df PA |
381 | -re "$gdb_prompt $" {pass "set follow-fork to nonsense is prohibited (reset parent)"} |
382 | timeout {fail "set follow-fork to nonsense is prohibited (reset parent)"} | |
74cf1395 JM |
383 | } |
384 | ||
e85a822c DJ |
385 | # Check that fork catchpoints are supported, as an indicator for whether |
386 | # fork-following is supported. | |
387 | if [runto_main] then { check_fork_catchpoints } | |
388 | ||
74cf1395 JM |
389 | # Test the default behaviour, which is to follow the parent of a |
390 | # fork, and detach from the child. Do this without catchpoints. | |
391 | # | |
392 | if [runto_main] then { default_fork_parent_follow } | |
393 | ||
394 | # Test the ability to explicitly follow the parent of a fork, and | |
395 | # detach from the child. Do this without catchpoints. | |
396 | # | |
397 | if [runto_main] then { explicit_fork_parent_follow } | |
398 | ||
399 | # Test the ability to follow the child of a fork, and detach from | |
400 | # the parent. Do this without catchpoints. | |
401 | # | |
402 | if [runto_main] then { explicit_fork_child_follow } | |
403 | ||
404 | # Test the ability to follow both child and parent of a fork. Do | |
405 | # this without catchpoints. | |
406 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
407 | # | |
408 | ||
409 | # Test the ability to have the debugger ask the user at fork-time | |
410 | # whether to follow the parent, child or both. Do this without | |
411 | # catchpoints. | |
412 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
413 | # | |
414 | ||
415 | # Test the ability to catch a fork, specify that the child be | |
416 | # followed, and continue. Make the catchpoint permanent. | |
417 | # | |
418 | if [runto_main] then { catch_fork_child_follow } | |
419 | ||
b242c3c2 PA |
420 | # Test that parent breakpoints are successfully detached from the |
421 | # child at fork time, even if the user removes them from the | |
422 | # breakpoints list after stopping at a fork catchpoint. | |
423 | if [runto_main] then { catch_fork_unpatch_child } | |
424 | ||
74cf1395 JM |
425 | # Test the ability to catch a fork, specify via a -do clause that |
426 | # the parent be followed, and continue. Make the catchpoint temporary. | |
427 | # | |
428 | if [runto_main] then { tcatch_fork_parent_follow } | |
429 | } | |
430 | ||
431 | # Start with a fresh gdb | |
432 | ||
433 | gdb_exit | |
434 | gdb_start | |
435 | gdb_reinitialize_dir $srcdir/$subdir | |
436 | gdb_load ${binfile} | |
437 | ||
e85a822c DJ |
438 | # The "Detaching..." and "Attaching..." messages may be hidden by |
439 | # default. | |
440 | gdb_test "set verbose" "" | |
74cf1395 JM |
441 | |
442 | # This is a test of gdb's ability to follow the parent, child or both | |
443 | # parent and child of a Unix fork() system call. | |
444 | # | |
445 | do_fork_tests | |
446 | ||
447 | return 0 |