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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 | 21 | |
e85a822c | 22 | global srcfile |
74cf1395 JM |
23 | set testfile "foll-fork" |
24 | set srcfile ${testfile}.c | |
25 | set binfile ${objdir}/${subdir}/${testfile} | |
26 | ||
27 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
b60f0898 JB |
28 | untested foll-fork.exp |
29 | return -1 | |
74cf1395 JM |
30 | } |
31 | ||
32 | ||
33 | ||
34 | # Until "set follow-fork-mode" and "catch fork" are implemented on | |
35 | # other targets... | |
36 | # | |
e85a822c | 37 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { |
74cf1395 JM |
38 | continue |
39 | } | |
40 | ||
e85a822c DJ |
41 | proc check_fork_catchpoints {} { |
42 | global gdb_prompt | |
43 | ||
44 | # Verify that the system supports "catch fork". | |
45 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "insert first fork catchpoint" | |
46 | set has_fork_catchpoints 0 | |
47 | gdb_test_multiple "continue" "continue to first fork catchpoint" { | |
48 | -re ".*Your system does not support fork catchpoints.*$gdb_prompt $" { | |
49 | unsupported "continue to first fork catchpoint" | |
50 | } | |
51 | -re ".*Catchpoint.*$gdb_prompt $" { | |
52 | set has_fork_catchpoints 1 | |
53 | pass "continue to first fork catchpoint" | |
54 | } | |
55 | } | |
56 | ||
57 | if {$has_fork_catchpoints == 0} { | |
58 | unsupported "fork catchpoints" | |
59 | return -code return | |
60 | } | |
61 | } | |
62 | ||
74cf1395 | 63 | proc default_fork_parent_follow {} { |
a76e022a MS |
64 | global gdb_prompt |
65 | ||
66 | gdb_test "show follow-fork" \ | |
67 | "Debugger response to a program call of fork or vfork is \"parent\".*" \ | |
68 | "default show parent follow, no catchpoints" | |
69 | ||
70 | gdb_test "next 2" \ | |
71 | "Detaching after fork from.*" \ | |
72 | "default parent follow, no catchpoints" | |
73 | ||
74 | # The child has been detached; allow time for any output it might | |
75 | # generate to arrive, so that output doesn't get confused with | |
76 | # any expected debugger output from a subsequent testpoint. | |
77 | # | |
78 | exec sleep 1 | |
74cf1395 JM |
79 | } |
80 | ||
81 | proc explicit_fork_parent_follow {} { | |
a76e022a MS |
82 | global gdb_prompt |
83 | ||
84 | gdb_test_no_output "set follow-fork parent" | |
85 | ||
86 | gdb_test "show follow-fork" \ | |
87 | "Debugger response to a program call of fork or vfork is \"parent\"." \ | |
88 | "explicit show parent follow, no catchpoints" | |
89 | ||
90 | gdb_test "next 2" "Detaching after fork from.*" \ | |
91 | "explicit parent follow, no catchpoints" | |
92 | ||
93 | # The child has been detached; allow time for any output it might | |
94 | # generate to arrive, so that output doesn't get confused with | |
95 | # any expected debugger output from a subsequent testpoint. | |
96 | # | |
97 | exec sleep 1 | |
74cf1395 JM |
98 | } |
99 | ||
100 | proc explicit_fork_child_follow {} { | |
a76e022a MS |
101 | global gdb_prompt |
102 | ||
103 | gdb_test_no_output "set follow-fork child" | |
104 | ||
105 | gdb_test "show follow-fork" \ | |
106 | "Debugger response to a program call of fork or vfork is \"child\"." \ | |
107 | "explicit show child follow, no catchpoints" | |
108 | ||
109 | gdb_test "next 2" "Attaching after.* fork to.*" \ | |
110 | "explicit child follow, no catchpoints" | |
111 | ||
112 | # The child has been detached; allow time for any output it might | |
113 | # generate to arrive, so that output doesn't get confused with | |
114 | # any gdb_expected debugger output from a subsequent testpoint. | |
115 | # | |
116 | exec sleep 1 | |
74cf1395 JM |
117 | } |
118 | ||
119 | proc catch_fork_child_follow {} { | |
a76e022a MS |
120 | global gdb_prompt |
121 | global srcfile | |
122 | ||
123 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] | |
124 | ||
125 | gdb_test "catch fork" "Catchpoint .*(fork).*" \ | |
126 | "explicit child follow, set catch fork" | |
127 | ||
128 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
129 | # and further that the catchpoint mentions no process id. | |
130 | # | |
131 | set test_name "info shows catchpoint without pid" | |
132 | gdb_test_multiple "info breakpoints" "$test_name" { | |
133 | -re ".*catchpoint.*keep y.*fork\[\r\n\]+$gdb_prompt $" { | |
134 | pass "$test_name" | |
135 | } | |
136 | } | |
137 | ||
138 | gdb_test "continue" \ | |
139 | "Catchpoint.*(forked process.*),.*in .*(fork|__kernel_v?syscall).*" \ | |
140 | "explicit child follow, catch fork" | |
141 | ||
142 | # Verify that the catchpoint is mentioned in an "info breakpoints", | |
143 | # and further that the catchpoint managed to capture a process id. | |
144 | # | |
145 | set test_name "info shows catchpoint without pid" | |
146 | gdb_test_multiple "info breakpoints" "$test_name" { | |
147 | -re ".*catchpoint.*keep y.*fork, process.*$gdb_prompt $" { | |
148 | pass "$test_name" | |
149 | } | |
150 | } | |
151 | ||
152 | gdb_test_no_output "set follow-fork child" | |
153 | ||
154 | gdb_test "tbreak ${srcfile}:$bp_after_fork" \ | |
155 | "Temporary breakpoint.*, line $bp_after_fork.*" \ | |
156 | "set follow-fork child, tbreak" | |
157 | ||
158 | gdb_test "continue" \ | |
159 | "Attaching after.* fork to.* at .*$bp_after_fork.*" \ | |
160 | "set follow-fork child, hit tbreak" | |
161 | ||
162 | # The parent has been detached; allow time for any output it might | |
163 | # generate to arrive, so that output doesn't get confused with | |
164 | # any expected debugger output from a subsequent testpoint. | |
165 | # | |
166 | exec sleep 1 | |
167 | ||
168 | gdb_test "delete breakpoints" \ | |
169 | "" \ | |
170 | "set follow-fork child, cleanup" \ | |
171 | "Delete all breakpoints.*$" \ | |
172 | "y" | |
74cf1395 JM |
173 | } |
174 | ||
b242c3c2 | 175 | proc catch_fork_unpatch_child {} { |
a76e022a MS |
176 | global gdb_prompt |
177 | global srcfile | |
178 | ||
179 | set bp_exit [gdb_get_line_number "at exit"] | |
180 | ||
181 | gdb_test "break callee" "file .*$srcfile, line .*" \ | |
182 | "unpatch child, break at callee" | |
183 | gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" \ | |
184 | "unpatch child, set catch fork" | |
185 | ||
186 | gdb_test "continue" \ | |
187 | "Catchpoint.*\\(forked process.*\\).*,.*in .*(fork|__kernel_v?syscall).*" \ | |
188 | "unpatch child, catch fork" | |
189 | ||
190 | # Delete all breakpoints and catchpoints. | |
191 | delete_breakpoints | |
192 | ||
193 | # Force $srcfile as the current GDB source can be in glibc sourcetree. | |
194 | gdb_test "break $srcfile:$bp_exit" \ | |
195 | "Breakpoint .*file .*$srcfile, line .*" \ | |
196 | "unpatch child, breakpoint at exit call" | |
197 | ||
198 | gdb_test "set follow-fork child" "" "unpatch child, set follow-fork child" | |
199 | ||
200 | set test "unpatch child, unpatched parent breakpoints from child" | |
201 | gdb_test_multiple "continue" $test { | |
202 | -re "at exit.*$gdb_prompt $" { | |
203 | pass "$test" | |
204 | } | |
205 | -re "SIGTRAP.*$gdb_prompt $" { | |
206 | fail "$test" | |
207 | ||
208 | # Explicitly kill this child, so we can continue gracefully | |
209 | # with further testing... | |
210 | send_gdb "kill\n" | |
211 | gdb_expect { | |
212 | -re ".*Kill the program being debugged.*y or n. $" { | |
213 | send_gdb "y\n" | |
214 | gdb_expect -re "$gdb_prompt $" {} | |
215 | } | |
216 | } | |
217 | } | |
218 | } | |
b242c3c2 PA |
219 | } |
220 | ||
74cf1395 | 221 | proc tcatch_fork_parent_follow {} { |
a76e022a MS |
222 | global gdb_prompt |
223 | global srcfile | |
224 | ||
225 | set bp_after_fork [gdb_get_line_number "set breakpoint here"] | |
226 | ||
227 | gdb_test "catch fork" "Catchpoint .*(fork).*" \ | |
228 | "explicit parent follow, set tcatch fork" | |
229 | ||
74cf1395 JM |
230 | # ??rehrauer: I don't yet know how to get the id of the tcatch |
231 | # via this script, so that I can add a -do list to it. For now, | |
232 | # do the follow stuff after the catch happens. | |
233 | ||
a76e022a MS |
234 | gdb_test "continue" "in .*(fork|__kernel_v?syscall).*" \ |
235 | "explicit parent follow, tcatch fork" | |
236 | ||
237 | gdb_test_no_output "set follow-fork parent" | |
238 | ||
239 | gdb_test "tbreak ${srcfile}:$bp_after_fork" \ | |
240 | "Temporary breakpoint.*, line $bp_after_fork.*" \ | |
241 | "set follow-fork parent, tbreak" | |
242 | ||
243 | gdb_test "continue" \ | |
244 | "Detaching after fork from.* at .*$bp_after_fork.*" \ | |
245 | "set follow-fork parent, hit tbreak" | |
246 | ||
247 | # The child has been detached; allow time for any output it might | |
248 | # generate to arrive, so that output doesn't get confused with | |
249 | # any expected debugger output from a subsequent testpoint. | |
250 | # | |
251 | exec sleep 1 | |
252 | ||
253 | gdb_test "delete breakpoints" \ | |
254 | "" \ | |
255 | "set follow-fork parent, cleanup" \ | |
256 | "Delete all breakpoints.*$" \ | |
257 | "y" | |
74cf1395 JM |
258 | } |
259 | ||
260 | proc do_fork_tests {} { | |
a76e022a | 261 | global gdb_prompt |
74cf1395 | 262 | |
a76e022a MS |
263 | # Verify that help is available for "set follow-fork-mode". |
264 | # | |
265 | gdb_test "help set follow-fork-mode" \ | |
266 | "Set debugger response to a program call of fork or vfork..* | |
74cf1395 JM |
267 | A fork or vfork creates a new process. follow-fork-mode can be:.* |
268 | .*parent - the original process is debugged after a fork.* | |
269 | .*child - the new process is debugged after a fork.* | |
ef04f396 | 270 | The unfollowed process will continue to run..* |
a76e022a MS |
271 | By default, the debugger will follow the parent process..*" \ |
272 | "help set follow-fork" | |
273 | ||
274 | # Verify that we can set follow-fork-mode, using an abbreviation | |
275 | # for both the flag and its value. | |
276 | # | |
277 | gdb_test_no_output "set follow-fork ch" | |
278 | ||
279 | gdb_test "show follow-fork" \ | |
280 | "Debugger response to a program call of fork or vfork is \"child\".*" \ | |
281 | "set follow-fork, using abbreviations" | |
282 | ||
283 | # Verify that we cannot set follow-fork-mode to nonsense. | |
284 | # | |
285 | gdb_test "set follow-fork chork" "Undefined item: \"chork\".*" \ | |
286 | "set follow-fork to nonsense is prohibited" | |
287 | ||
288 | gdb_test_no_output "set follow-fork parent" "reset parent" | |
289 | ||
290 | # Check that fork catchpoints are supported, as an indicator for whether | |
291 | # fork-following is supported. | |
292 | if [runto_main] then { check_fork_catchpoints } | |
293 | ||
294 | # Test the default behaviour, which is to follow the parent of a | |
295 | # fork, and detach from the child. Do this without catchpoints. | |
296 | # | |
297 | if [runto_main] then { default_fork_parent_follow } | |
298 | ||
299 | # Test the ability to explicitly follow the parent of a fork, and | |
300 | # detach from the child. Do this without catchpoints. | |
301 | # | |
302 | if [runto_main] then { explicit_fork_parent_follow } | |
303 | ||
304 | # Test the ability to follow the child of a fork, and detach from | |
305 | # the parent. Do this without catchpoints. | |
306 | # | |
307 | if [runto_main] then { explicit_fork_child_follow } | |
308 | ||
309 | # Test the ability to follow both child and parent of a fork. Do | |
310 | # this without catchpoints. | |
311 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
312 | # | |
313 | ||
314 | # Test the ability to have the debugger ask the user at fork-time | |
315 | # whether to follow the parent, child or both. Do this without | |
316 | # catchpoints. | |
317 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
318 | # | |
319 | ||
320 | # Test the ability to catch a fork, specify that the child be | |
321 | # followed, and continue. Make the catchpoint permanent. | |
322 | # | |
323 | if [runto_main] then { catch_fork_child_follow } | |
324 | ||
325 | # Test that parent breakpoints are successfully detached from the | |
326 | # child at fork time, even if the user removes them from the | |
327 | # breakpoints list after stopping at a fork catchpoint. | |
328 | if [runto_main] then { catch_fork_unpatch_child } | |
329 | ||
330 | # Test the ability to catch a fork, specify via a -do clause that | |
331 | # the parent be followed, and continue. Make the catchpoint temporary. | |
332 | # | |
333 | if [runto_main] then { tcatch_fork_parent_follow } | |
74cf1395 JM |
334 | } |
335 | ||
336 | # Start with a fresh gdb | |
337 | ||
338 | gdb_exit | |
339 | gdb_start | |
340 | gdb_reinitialize_dir $srcdir/$subdir | |
341 | gdb_load ${binfile} | |
342 | ||
e85a822c DJ |
343 | # The "Detaching..." and "Attaching..." messages may be hidden by |
344 | # default. | |
345 | gdb_test "set verbose" "" | |
74cf1395 JM |
346 | |
347 | # This is a test of gdb's ability to follow the parent, child or both | |
348 | # parent and child of a Unix fork() system call. | |
349 | # | |
350 | do_fork_tests | |
351 | ||
352 | return 0 |