void disestablish_ppp(int tty_fd)
{
- int nout;
-
if (!hungup) {
/*
* Flush the tty output buffer so that the TIOCSETD doesn't hang.
- * We may have to do this several times because the tcflush only
- * affects the serial driver, and may trigger the ppp driver to
- * supply more data to the serial driver.
*/
- do {
- if (tcflush(tty_fd, TCIOFLUSH) < 0)
- break;
- nout = 0;
- } while (ioctl(tty_fd, TIOCOUTQ, &nout) >= 0 && nout > 0);
+ if (tcflush(tty_fd, TCIOFLUSH) < 0)
+ warn("tcflush failed: %m");
/*
* Restore the previous line discipline
*/
* path_to_procfs - find the path to the proc file system mount point
*/
-static int path_to_procfs (void)
+static int path_to_procfs (const char *tail)
{
struct mntent *mntent;
FILE *fp;
if (fp == NULL) {
/* Default the mount location of /proc */
strlcpy (route_buffer, "/proc", sizeof (route_buffer));
+ strlcat (route_buffer, tail, sizeof(route_buffer));
return 1;
}
return 0;
strlcpy(route_buffer, mntent->mnt_dir, sizeof (route_buffer));
+ strlcat (route_buffer, tail, sizeof(route_buffer));
return 1;
}
static char *path_to_route (void)
{
- if (!path_to_procfs()) {
+ if (!path_to_procfs("/net/route")) {
error("proc file system not mounted");
return 0;
}
- strlcat (route_buffer, "/net/route", sizeof(route_buffer));
return (route_buffer);
}
cols[col] = strtok(p, route_delims);
if (cols[col] == NULL)
return 0; /* didn't get enough columns */
+ p = NULL;
}
((struct sockaddr_in *) &rt->rt_dst)->sin_addr.s_addr =
no_ppp_msg =
"This system lacks kernel support for PPP. This could be because\n"
- "the PPP kernel module is not loaded, or because the kernel is\n"
- "not configured for PPP. See the README.linux file in the\n"
- "ppp-2.3.7 distribution.\n";
+ "the PPP kernel module could not be loaded, or because PPP was not\n"
+ "included in the kernel configuration. If PPP was included as a\n"
+ "module, try `/sbin/modprobe -v ppp'. If that fails, check that\n"
+ "ppp.o exists in /lib/modules/`uname -r`/net.\n"
+ "See README.linux file in the ppp distribution for more details.\n";
/*
* Open a socket for doing the ioctl operations.
/*
* get_pty - get a pty master/slave pair and chown the slave side
- * to the uid given. Assumes slave_name points to >= 12 bytes of space.
+ * to the uid given. Assumes slave_name points to >= 16 bytes of space.
*/
int
get_pty(master_fdp, slave_fdp, slave_name, uid)
char *slave_name;
int uid;
{
- int i, mfd, sfd;
- char pty_name[12];
+ int i, mfd, sfd = -1;
+ char pty_name[16];
struct termios tios;
- sfd = -1;
- for (i = 0; i < 64; ++i) {
- slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x",
- 'p' + i / 16, i % 16);
- mfd = open(pty_name, O_RDWR, 0);
- if (mfd >= 0) {
- pty_name[5] = 't';
- sfd = open(pty_name, O_RDWR | O_NOCTTY, 0);
- if (sfd >= 0)
- break;
- close(mfd);
+#ifdef TIOCGPTN
+ /*
+ * Try the unix98 way first.
+ */
+ mfd = open("/dev/ptmx", O_RDWR);
+ if (mfd >= 0) {
+ int ptn;
+ if (ioctl(mfd, TIOCGPTN, &ptn) >= 0) {
+ slprintf(pty_name, sizeof(pty_name), "/dev/pts/%d", ptn);
+ chmod(pty_name, S_IRUSR | S_IWUSR);
+#ifdef TIOCSPTLCK
+ ptn = 0;
+ if (ioctl(mfd, TIOCSPTLCK, &ptn) < 0)
+ warn("Couldn't unlock pty slave %s: %m", pty_name);
+#endif
+ if ((sfd = open(pty_name, O_RDWR)) < 0)
+ warn("Couldn't open pty slave %s: %m", pty_name);
}
}
+#endif /* TIOCGPTN */
+
+ if (sfd < 0) {
+ /* the old way - scan through the pty name space */
+ for (i = 0; i < 64; ++i) {
+ slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x",
+ 'p' + i / 16, i % 16);
+ mfd = open(pty_name, O_RDWR, 0);
+ if (mfd >= 0) {
+ pty_name[5] = 't';
+ sfd = open(pty_name, O_RDWR | O_NOCTTY, 0);
+ if (sfd >= 0) {
+ fchown(sfd, uid, -1);
+ fchmod(sfd, S_IRUSR | S_IWUSR);
+ break;
+ }
+ close(mfd);
+ }
+ }
+ }
+
if (sfd < 0)
return 0;
- strlcpy(slave_name, pty_name, 12);
+ strlcpy(slave_name, pty_name, 16);
*master_fdp = mfd;
*slave_fdp = sfd;
- fchown(sfd, uid, -1);
- fchmod(sfd, S_IRUSR | S_IWUSR);
if (tcgetattr(sfd, &tios) == 0) {
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
tios.c_cflag |= CS8 | CREAD;
sys_check_options(void)
{
#ifdef IPX_CHANGE
- struct stat stat_buf;
/*
* Disable the IPX protocol if the support is not present in the kernel.
- * If we disable it then ensure that IP support is enabled.
*/
- while (ipxcp_protent.enabled_flag) {
- if (path_to_procfs()) {
- strlcat (route_buffer, "/net/ipx_interface", sizeof(route_buffer));
- if (lstat (route_buffer, &stat_buf) >= 0)
- break;
+ if (ipxcp_protent.enabled_flag) {
+ struct stat stat_buf;
+ if (!path_to_procfs("/net/ipx_interface")
+ || lstat (route_buffer, &stat_buf) < 0) {
+ error("IPX support is not present in the kernel\n");
+ ipxcp_protent.enabled_flag = 0;
}
- error("IPX support is not present in the kernel\n");
- ipxcp_protent.enabled_flag = 0;
- ipcp_protent.enabled_flag = 1;
- break;
}
#endif
if (demand && driver_is_old) {
projects / ppp.git / blobdiff