int fd_move_above_stdio(int fd);
int rearrange_stdio(int original_input_fd, int original_output_fd, int original_error_fd);
+
+static inline int make_null_stdio(void) {
+ return rearrange_stdio(-1, -1, -1);
+}
if (r < 0)
log_warning_errno(r, "Failed to reset terminal, ignoring: %m");
- r = make_stdio(fd);
+ r = rearrange_stdio(fd, fd, fd); /* This invalidates 'fd' both on success and on failure. */
if (r < 0)
- return log_error_errno(r, "Failed to duplicate terminal fd: %m");
+ return log_error_errno(r, "Failed to make terminal stdin/stdout/stderr: %m");
reset_terminal_feature_caches();
return cached_on_tty;
}
-int make_stdio(int fd) {
- int r = 0;
-
- assert(fd >= 0);
-
- if (dup2(fd, STDIN_FILENO) < 0)
- r = -errno;
- if (dup2(fd, STDOUT_FILENO) < 0 && r >= 0)
- r = -errno;
- if (dup2(fd, STDERR_FILENO) < 0 && r >= 0)
- r = -errno;
-
- safe_close_above_stdio(fd);
-
- /* Explicitly unset O_CLOEXEC, since if fd was < 3, then dup2() was a NOP and the bit hence possibly set. */
- stdio_unset_cloexec();
-
- return r;
-}
-
-int make_null_stdio(void) {
- int null_fd, r;
-
- null_fd = open("/dev/null", O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (null_fd < 0)
- return -errno;
-
- r = make_stdio(null_fd);
-
- reset_terminal_feature_caches();
-
- return r;
-}
-
int getttyname_malloc(int fd, char **ret) {
size_t l = 100;
int r;
int vtnr_from_tty(const char *tty);
const char *default_term_for_tty(const char *tty);
-int make_stdio(int fd);
-int make_null_stdio(void);
int make_console_stdio(void);
int fd_columns(int fd);