diff options
| -rw-r--r-- | utils/utils.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/utils/utils.c b/utils/utils.c index 2cfcc8e..f0c4a90 100644 --- a/utils/utils.c +++ b/utils/utils.c @@ -139,7 +139,12 @@ char *get_active_console(char *out, int len) { char line[CMDLINE_SIZE + 1]; int fd = open("/sys/class/tty/console/active", O_RDONLY); - ssize_t r = read(fd, line, sizeof(line) - 1); + ssize_t r; + + if (fd < 0) + return NULL; + + r = read(fd, line, sizeof(line) - 1); line[CMDLINE_SIZE] = '\0'; close(fd); |