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Add Linux ptrace() tutorial

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This commit is contained in:
Justine Tunney 2022-03-24 08:00:21 -07:00
parent 98909b1391
commit 3b9e66ecba
14 changed files with 1290 additions and 23 deletions
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1048
tool/build/strace.c Normal file
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File diff suppressed because it is too large Load diff

28
tool/net/net.mk
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@ -22,6 +22,7 @@ TOOL_NET_COMS = \
o/$(MODE)/tool/net/redbean-static.com \
o/$(MODE)/tool/net/redbean-unsecure.com \
o/$(MODE)/tool/net/redbean-original.com \
o/$(MODE)/tool/net/redbean-assimilate.com \
o/$(MODE)/tool/net/echoserver.com \
o/$(MODE)/tool/net/wb.com
@ -314,6 +315,33 @@ o/$(MODE)/tool/net/redbean-original.com.dbg: \
o/$(MODE)/tool/net/redbean-original.o: tool/net/redbean.c o/$(MODE)/tool/net/redbean.o
@$(COMPILE) -AOBJECTIFY.c $(OBJECTIFY.c) -DSTATIC -DUNSECURE -DREDBEAN=\"redbean-original\" $(OUTPUT_OPTION) $<
# REDBEAN-ASSIMILATE.COM
#
# Same as REDBEAN.COM except without no-modify-self behavior.
o/$(MODE)/tool/net/redbean-assimilate.com.dbg: \
o/$(MODE)/tool/net/redbean.com.dbg
@cp -f $< $@
o/$(MODE)/tool/net/redbean-assimilate.com: \
o/$(MODE)/tool/net/redbean-assimilate.com.dbg \
o/$(MODE)/third_party/infozip/zip.com \
o/$(MODE)/tool/build/symtab.com \
tool/net/net.mk \
tool/net/help.txt \
tool/net/.init.lua \
tool/net/favicon.ico \
tool/net/redbean.png
@$(COMPILE) -AOBJCOPY -T$@ $(OBJCOPY) -S -O binary $< $@
@$(COMPILE) -AMKDIR -T$@ mkdir -p o/$(MODE)/tool/net/.redbean-assimilate
@$(COMPILE) -ASYMTAB o/$(MODE)/tool/build/symtab.com -o o/$(MODE)/tool/net/.redbean-assimilate/.symtab $<
@$(COMPILE) -AZIP -T$@ o/$(MODE)/third_party/infozip/zip.com -9qj $@ \
o/$(MODE)/tool/net/.redbean-assimilate/.symtab \
tool/net/help.txt \
tool/net/.init.lua \
tool/net/favicon.ico \
tool/net/redbean.png
.PHONY: o/$(MODE)/tool/net
o/$(MODE)/tool/net: \
$(TOOL_NET_BINS) \

8
tool/net/redbean.c
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@ -2674,7 +2674,7 @@ static void LaunchBrowser(const char *path) {
sigprocmask(SIG_BLOCK, &chldmask, &savemask);
CHECK_NE(-1, (pid = fork()));
if (!pid) {
setpgid(getpid(), getpid());
setpgid(getpid(), getpid()); // ctrl-c'ing redbean shouldn't kill browser
sigaction(SIGINT, &saveint, 0);
sigaction(SIGQUIT, &savequit, 0);
sigprocmask(SIG_SETMASK, &savemask, 0);
@ -6605,7 +6605,7 @@ static void RestoreApe(void) {
WARNF("(srvr) can't restore .ape");
free(p);
} else {
WARNF("(srvr) /.ape not found");
INFOF("(srvr) /.ape not found");
}
}
@ -6907,6 +6907,10 @@ void RedBean(int argc, char *argv[]) {
if (daemonize) {
Daemonize();
} else {
// xxx: create process group to make it easier to propagate SIGTERM
// to children. the downside to doing this seems to be that
// ctrl-c isn't propagating as expected when running redbean
// underneath strace.com :|
setpgid(getpid(), getpid());
if (logpath) {
close(2);