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Stop lldb's "^D" and "quit" spam in a non terminal environment.

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This commit is contained in:
Julius Trinkunas 2014-04-29 14:24:53 +03:00
parent 0a9418a564
commit 3ee1bca513
1 changed files with 20 additions and 1 deletions
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21
ios-deploy.c
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@ -741,6 +741,13 @@ void bring_process_to_foreground() {
signal(SIGTTOU, SIG_DFL);
}
void setup_dummy_pipe_on_stdin(int pfd[2]) {
if (pipe(pfd) == -1)
perror("pipe failed");
if (dup2(pfd[0], STDIN_FILENO) == -1)
perror("dup2 failed");
}
void launch_debugger(AMDeviceRef device, CFURLRef url) {
AMDeviceConnect(device);
assert(AMDeviceIsPaired(device));
@ -771,7 +778,17 @@ void launch_debugger(AMDeviceRef device, CFURLRef url) {
signal(SIGHUP, SIG_DFL);
signal(SIGLLDB, SIG_DFL);
child = getpid();
bring_process_to_foreground();
int pfd[2] = {-1, -1};
if (isatty(STDIN_FILENO))
// If we are running on a terminal, then we need to bring process to foreground for input
// to work correctly on lldb's end.
bring_process_to_foreground();
else
// If lldb is running in a non terminal environment, then it freaks out spamming "^D" and
// "quit". It seems this is caused by read() on stdin returning EOF in lldb. To hack around
// this we setup a dummy pipe on stdin, so read() would block expecting "user's" input.
setup_dummy_pipe_on_stdin(pfd);
char lldb_shell[400];
sprintf(lldb_shell, LLDB_SHELL);
@ -782,6 +799,8 @@ void launch_debugger(AMDeviceRef device, CFURLRef url) {
if (status == -1)
perror("failed launching lldb");
close(pfd[0]);
close(pfd[1]);
// Notify parent we're exiting
kill(parent, SIGLLDB);
// Pass lldb exit code