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Use O_CLOEXEC for temp ctty fds

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Kovid Goyal 2022-07-09 06:48:53 +05:30
parent b7d3d64975
commit feb96f1be8
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 2 additions and 2 deletions
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kitty/child.c
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@ -119,7 +119,7 @@ spawn(PyObject *self UNUSED, PyObject *args) {
if (setsid() == -1) exit_on_err("setsid() in child process failed");
// Establish the controlling terminal (see man 7 credentials)
int tfd = safe_open(name, O_RDWR, 0);
int tfd = safe_open(name, O_RDWR | O_CLOEXEC, 0);
if (tfd == -1) exit_on_err("Failed to open controlling terminal");
// On BSD open() does not establish the controlling terminal
if (ioctl(tfd, TIOCSCTTY, 0) == -1) exit_on_err("Failed to set controlling terminal with TIOCSCTTY");
@ -186,7 +186,7 @@ establish_controlling_tty(PyObject *self UNUSED, PyObject *args) {
int stdin_fd = -1, stdout_fd = -1, stderr_fd = -1;
const char *tty_name;
if (!PyArg_ParseTuple(args, "s|iii", &tty_name, &stdin_fd, &stdout_fd, &stderr_fd)) return NULL;
int tfd = safe_open(tty_name, O_RDWR, 0);
int tfd = safe_open(tty_name, O_RDWR | O_CLOEXEC, 0);
#define cleanup() if (tfd >= 0) safe_close(tfd, __FILE__, __LINE__);
#define fail() { cleanup(); return PyErr_SetFromErrno(PyExc_OSError); }
if (tfd < 0) { cleanup(); return PyErr_SetFromErrnoWithFilename(PyExc_OSError, tty_name); }