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topjohnwu
2025-09-09 10:19:01 -07:00
parent ef4e230258
commit 177a456d8b
5 changed files with 82 additions and 91 deletions
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14
native/src/core/su/su.cpp
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@@ -63,14 +63,8 @@ int quit_signals[] = { SIGALRM, SIGABRT, SIGHUP, SIGPIPE, SIGQUIT, SIGTERM, SIGI
}
static void sighandler(int sig) {
restore_stdin();
// Assume we'll only be called before death
// See note before sigaction() in set_stdin_raw()
//
// Now, close all standard I/O to cause the pumps
// to exit so we can continue and retrieve the exit
// code
// Close all standard I/O to cause the pumps to exit
// so we can continue and retrieve the exit code.
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
@@ -243,9 +237,9 @@ int su_client_main(int argc, char *argv[]) {
write_int(fd, 1);
int ptmx = recv_fd(fd);
setup_sighandlers(sighandler);
// if stdin is not a tty, if we pump to ptmx, our process may intercept the input to ptmx and
// If stdin is not a tty, and if we pump to ptmx, our process may intercept the input to ptmx and
// output to stdout, which cause the target process lost input.
pump_tty(ptmx, (atty & ATTY_IN) ? ptmx : -1);
pump_tty(ptmx, atty & ATTY_IN);
} else {
write_int(fd, 0);
}