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Shell: Put children in their own process groups and fix job control

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This commit fixes job control by putting children in their own process
group, and proxying TTY signals to active jobs.
This also cleans up the code around builtin_disown a bit to use
the newer job interfaces.
This commit is contained in:
AnotherTest
2020-07-12 18:51:47 +04:30
committed by Andreas Kling
parent 3a7a689b87
commit 151e4d41ed
5 changed files with 49 additions and 35 deletions
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35
Shell/Builtin.cpp
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@@ -372,44 +372,33 @@ int Shell::builtin_disown(int argc, const char** argv)
fprintf(stderr, "disown: Invalid job id %s\n", job_id);
}
if (job_ids.is_empty()) {
u64 id = 0;
for (auto& job : jobs)
id = max(id, job.value->job_id());
job_ids.append(id);
}
if (job_ids.is_empty())
job_ids.append(find_last_job_id());
Vector<size_t> keys_of_jobs_to_disown;
Vector<const Job*> jobs_to_disown;
for (auto id : job_ids) {
bool found = false;
for (auto& entry : jobs) {
if (entry.value->job_id() == id) {
keys_of_jobs_to_disown.append(entry.key);
found = true;
break;
}
}
if (!found) {
auto job = find_job(id);
if (!job)
fprintf(stderr, "disown: job with id %zu not found\n", id);
}
else
jobs_to_disown.append(job);
}
if (keys_of_jobs_to_disown.is_empty()) {
if (str_job_ids.is_empty()) {
if (jobs_to_disown.is_empty()) {
if (str_job_ids.is_empty())
fprintf(stderr, "disown: no current job\n");
}
// An error message has already been printed about the nonexistence of each listed job.
return 1;
}
for (auto job_index : keys_of_jobs_to_disown) {
auto job = jobs.get(job_index).value();
for (auto job : jobs_to_disown) {
job->deactivate();
if (!job->is_running_in_background())
fprintf(stderr, "disown warning: job %" PRIu64 " is currently not running, 'kill -%d %d' to make it continue\n", job->job_id(), SIGCONT, job->pid());
jobs.remove(job_index);
jobs.remove(job->pid());
}
return 0;