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Shell: Sneak a way into being a session leader

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This commit is contained in:
AnotherTest 2020-09-30 14:05:28 +03:30 • committed by Andreas Kling
parent 422cb50e4e
commit a7828434c0
1 changed files with 14 additions and 1 deletions
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15
Shell/main.cpp
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@ -133,11 +133,24 @@ int main(int argc, char** argv)
return 0;
}
if (getsid(getpid()) == 0) {
auto pid = getpid();
if (auto sid = getsid(pid); sid == 0) {
if (setsid() < 0) {
perror("setsid");
// Let's just hope that it's ok.
}
} else if (sid != pid) {
if (getpgid(pid) != pid) {
dbgf("We were already in a session with sid={} (we are {}), let's do some gymnastics", sid, pid);
if (setpgid(pid, sid) < 0) {
auto strerr = strerror(errno);
dbgf("couldn't setpgid: {}", strerr);
}
if (setsid() < 0) {
auto strerr = strerror(errno);
dbgf("couldn't setsid: {}", strerr);
}
}
}
shell->current_script = argv[0];