X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fsys-linux.c;h=c63ac9a5d9a0cf8a9918b1941b5f6f653adaea39;hb=a9d7d296618f319ab77c942a83285b9009157eae;hp=e85988665924545ac1887d1b22d5c9570b8894aa;hpb=c8dcd58de5028a2fbade82f593f32f878508c5f6;p=ppp.git diff --git a/pppd/sys-linux.c b/pppd/sys-linux.c index e859886..c63ac9a 100644 --- a/pppd/sys-linux.c +++ b/pppd/sys-linux.c @@ -122,8 +122,6 @@ static u_int32_t default_route_gateway; /* Gateway for default route added */ static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ static char proxy_arp_dev[16]; /* Device for proxy arp entry */ -static char *lock_file; - static struct utsname utsname; /* for the kernel version */ static int kernel_version; #define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p)) @@ -167,10 +165,6 @@ extern u_char inpacket_buf[]; /* borrowed from main.c */ extern int hungup; -#ifndef LOCK_PREFIX -#define LOCK_PREFIX "/var/lock/LCK.." -#endif - static void set_ppp_fd (int new_fd) { SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", new_fd)); @@ -394,6 +388,7 @@ void disestablish_ppp(int tty_fd) /* * Restore the previous line discipline */ + tcflush(tty_fd, TCIOFLUSH); if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0) { if ( ! ok_error (errno)) error("ioctl(TIOCSETD, N_TTY): %m"); @@ -866,6 +861,7 @@ void ppp_send_config (int unit,int mtu,u_int32_t asyncmap,int pcomp,int accomp) x = get_flags(); x = pcomp ? x | SC_COMP_PROT : x & ~SC_COMP_PROT; x = accomp ? x | SC_COMP_AC : x & ~SC_COMP_AC; + x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC; set_flags(x); } @@ -1569,48 +1565,33 @@ static int ppp_registered(void) { int local_fd; - int init_disc = -1; - int initfdflags; - - local_fd = open(devnam, O_NONBLOCK | O_RDWR, 0); - if (local_fd < 0) { - error("Failed to open %s: %m(%d)", devnam, errno); - return 0; - } - - initfdflags = fcntl(local_fd, F_GETFL); - if (initfdflags == -1) { - error("Couldn't get device fd flags: %m(%d)", errno); - close (local_fd); + int mfd = -1; + int ret = 0; + char slave[16]; + + /* + * We used to open the serial device and set it to the ppp line + * discipline here, in order to create a ppp unit. But that is + * not a good idea - the user might have specified a device that + * they can't open (permission, or maybe it doesn't really exist). + * So we grab a pty master/slave pair and use that. + */ + if (!get_pty(&mfd, &local_fd, slave, 0)) { + no_ppp_msg = "Couldn't determine if PPP is supported (no free ptys)"; return 0; } - initfdflags &= ~O_NONBLOCK; - fcntl(local_fd, F_SETFL, initfdflags); -/* - * Read the initial line dicipline and try to put the device into the - * PPP dicipline. - */ - if (ioctl(local_fd, TIOCGETD, &init_disc) < 0) { - error("ioctl(TIOCGETD): %m(%d)", errno); - close (local_fd); - return 0; - } - + /* + * Try to put the device into the PPP discipline. + */ if (ioctl(local_fd, TIOCSETD, &ppp_disc) < 0) { - error("ioctl(TIOCSETD): %m(%d)", errno); - close (local_fd); - return 0; - } - - if (ioctl(local_fd, TIOCSETD, &init_disc) < 0) { - error("ioctl(TIOCSETD): %m(%d)", errno); - close (local_fd); - return 0; - } + error("ioctl(TIOCSETD(PPP)): %m(%d)", errno); + } else + ret = 1; - close (local_fd); - return 1; + close(local_fd); + close(mfd); + return ret; } /******************************************************************** @@ -1625,7 +1606,13 @@ int ppp_available(void) struct ifreq ifr; int size; int my_version, my_modification, my_patch; - extern char *no_ppp_msg; + + 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"; + /* * Open a socket for doing the ioctl operations. */ @@ -1655,18 +1642,11 @@ int ppp_available(void) if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP)) ok = 0; - if (!ok) - 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-2.3.6 distribution.\n"; - /* * This is the PPP device. Validate the version of the driver at this * point to ensure that this program will work with the driver. */ - else { + if (ok) { char abBuffer [1024]; ifr.ifr_data = abBuffer; @@ -1745,10 +1725,10 @@ void logwtmp (const char *line, const char *name, const char *host) memset(&ut, 0, sizeof(ut)); if (ut.ut_id[0] == 0) - strlcpy(ut.ut_id, line + 3, sizeof(ut.ut_id)); + strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id)); - strlcpy(ut.ut_user, name, sizeof(ut.ut_user)); - strlcpy(ut.ut_line, line, sizeof(ut.ut_line)); + strncpy(ut.ut_user, name, sizeof(ut.ut_user)); + strncpy(ut.ut_line, line, sizeof(ut.ut_line)); time(&ut.ut_time); @@ -1757,7 +1737,7 @@ void logwtmp (const char *line, const char *name, const char *host) /* Insert the host name if one is supplied */ if (*host) - strlcpy (ut.ut_host, host, sizeof(ut.ut_host)); + strncpy (ut.ut_host, host, sizeof(ut.ut_host)); /* Insert the IP address of the remote system if IP is enabled */ if (ipcp_protent.enabled_flag && ipcp_hisoptions[0].neg_addr) @@ -1785,11 +1765,18 @@ void logwtmp (const char *line, const char *name, const char *host) } } +#if 0 /******************************************************************** * Code for locking/unlocking the serial device. * This code is derived from chat.c. */ +#ifndef LOCK_PREFIX +#define LOCK_PREFIX "/var/lock/LCK.." +#endif + +static char *lock_file; + /* * lock - create a lock file for the named device */ @@ -1922,6 +1909,7 @@ void unlock(void) lock_file = NULL; } } +#endif /******************************************************************** * @@ -2355,6 +2343,7 @@ int cipxfaddr (int unit) return result; } +#if 0 /* * daemon - Detach us from controlling terminal session. */ @@ -2378,6 +2367,7 @@ daemon(nochdir, noclose) } return 0; } +#endif /* * Use the hostname as part of the random number seed.