diff --git a/linux.c b/linux.c index d2cf129..f9b2ec6 100644 --- a/linux.c +++ b/linux.c @@ -36,11 +36,16 @@ SP_PRIV enum sp_return get_port_details(struct sp_port *port) char *ptr, *dev = port->name + 5; FILE *file; int i, count; + struct stat statbuf; if (strncmp(port->name, "/dev/", 5)) RETURN_ERROR(SP_ERR_ARG, "Device name not recognized"); snprintf(file_name, sizeof(file_name), "/sys/class/tty/%s", dev); + if (lstat(file_name, &statbuf) == -1) + RETURN_ERROR(SP_ERR_ARG, "Device not found"); + if (!S_ISLNK(statbuf.st_mode)) + snprintf(file_name, sizeof(file_name), "/sys/class/tty/%s/device", dev); count = readlink(file_name, file_name, sizeof(file_name)); if (count <= 0 || count >= (int)(sizeof(file_name) - 1)) RETURN_ERROR(SP_ERR_ARG, "Device not found"); @@ -176,10 +181,11 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list) struct serial_struct serial_info; int ioctl_result; #endif - char buf[sizeof(entry.d_name) + 16]; + char buf[sizeof(entry.d_name) + 23]; int len, fd; DIR *dir; int ret = SP_OK; + struct stat statbuf; DEBUG("Enumerating tty devices"); if (!(dir = opendir("/sys/class/tty"))) @@ -188,6 +194,10 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list) DEBUG("Iterating over results"); while (!readdir_r(dir, &entry, &result) && result) { snprintf(buf, sizeof(buf), "/sys/class/tty/%s", entry.d_name); + if (lstat(buf, &statbuf) == -1) + continue; + if (!S_ISLNK(statbuf.st_mode)) + snprintf(buf, sizeof(buf), "/sys/class/tty/%s/device", entry.d_name); len = readlink(buf, target, sizeof(target)); if (len <= 0 || len >= (int)(sizeof(target) - 1)) continue;