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155 lines
4.3 KiB
Diff
155 lines
4.3 KiB
Diff
pppd: Remove runtime kernel checks
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On embedded system distributions the required kernel features for pppd are
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more or less guaranteed to be present, so there is not much point in
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performing runtime checks, it just increases the binary size.
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This patch removes the runtime kernel feature checks.
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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--- a/pppd/sys-linux.c
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+++ b/pppd/sys-linux.c
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@@ -196,7 +196,7 @@ static int driver_is_old = 0;
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static int restore_term = 0; /* 1 => we've munged the terminal */
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static struct termios inittermios; /* Initial TTY termios */
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-int new_style_driver = 0;
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+static const int new_style_driver = 1;
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static char loop_name[20];
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static unsigned char inbuf[512]; /* buffer for chars read from loopback */
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@@ -214,8 +214,8 @@ static int looped; /* 1 if using loop
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static int link_mtu; /* mtu for the link (not bundle) */
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static struct utsname utsname; /* for the kernel version */
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-static int kernel_version;
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#define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p))
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+static const int kernel_version = KVERSION(2,6,37);
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#define MAX_IFS 100
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@@ -1451,11 +1451,12 @@ int ccp_fatal_error (int unit)
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*
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* path_to_procfs - find the path to the proc file system mount point
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*/
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-static char proc_path[MAXPATHLEN];
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-static int proc_path_len;
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+static char proc_path[MAXPATHLEN] = "/proc";
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+static int proc_path_len = 5;
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static char *path_to_procfs(const char *tail)
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{
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+#if 0
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struct mntent *mntent;
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FILE *fp;
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@@ -1477,6 +1478,7 @@ static char *path_to_procfs(const char *
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fclose (fp);
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}
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}
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+#endif
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strlcpy(proc_path + proc_path_len, tail,
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sizeof(proc_path) - proc_path_len);
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@@ -2129,15 +2131,19 @@ int ppp_available(void)
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int my_version, my_modification, my_patch;
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int osmaj, osmin, ospatch;
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+#if 0
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/* get the kernel version now, since we are called before sys_init */
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uname(&utsname);
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osmaj = osmin = ospatch = 0;
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sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch);
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kernel_version = KVERSION(osmaj, osmin, ospatch);
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+#endif
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fd = open("/dev/ppp", O_RDWR);
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if (fd >= 0) {
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+#if 0
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new_style_driver = 1;
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+#endif
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/* XXX should get from driver */
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driver_version = 2;
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@@ -2197,6 +2203,7 @@ int ppp_available(void)
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if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP))
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ok = 0;
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+ return ok;
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/*
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* This is the PPP device. Validate the version of the driver at this
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@@ -2730,6 +2737,7 @@ get_pty(master_fdp, slave_fdp, slave_nam
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}
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#endif /* TIOCGPTN */
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+#if 0
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if (sfd < 0) {
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/* the old way - scan through the pty name space */
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for (i = 0; i < 64; ++i) {
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@@ -2748,6 +2756,7 @@ get_pty(master_fdp, slave_fdp, slave_nam
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}
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}
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}
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+#endif
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if (sfd < 0)
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return 0;
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--- a/pppd/plugins/pppoatm/pppoatm.c
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+++ b/pppd/plugins/pppoatm/pppoatm.c
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@@ -168,14 +168,6 @@ static void disconnect_pppoatm(void)
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void plugin_init(void)
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{
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-#if defined(__linux__)
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- extern int new_style_driver; /* From sys-linux.c */
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- if (!ppp_available() && !new_style_driver)
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- fatal("Kernel doesn't support ppp_generic - "
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- "needed for PPPoATM");
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-#else
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- fatal("No PPPoATM support on this OS");
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-#endif
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info("PPPoATM plugin_init");
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add_options(pppoa_options);
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}
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--- a/pppd/plugins/rp-pppoe/plugin.c
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+++ b/pppd/plugins/rp-pppoe/plugin.c
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@@ -59,9 +59,6 @@ static char const RCSID[] =
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char pppd_version[] = VERSION;
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-/* From sys-linux.c in pppd -- MUST FIX THIS! */
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-extern int new_style_driver;
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-
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char *pppd_pppoe_service = NULL;
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static char *acName = NULL;
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static char *existingSession = NULL;
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@@ -371,10 +368,6 @@ PPPoEDevnameHook(char *cmd, char **argv,
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void
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plugin_init(void)
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{
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- if (!ppp_available() && !new_style_driver) {
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- fatal("Linux kernel does not support PPPoE -- are you running 2.4.x?");
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- }
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-
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add_options(Options);
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info("RP-PPPoE plugin version %s compiled against pppd %s",
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--- a/pppd/plugins/pppol2tp/pppol2tp.c
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+++ b/pppd/plugins/pppol2tp/pppol2tp.c
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@@ -486,12 +486,7 @@ static void pppol2tp_cleanup(void)
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void plugin_init(void)
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{
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-#if defined(__linux__)
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- extern int new_style_driver; /* From sys-linux.c */
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- if (!ppp_available() && !new_style_driver)
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- fatal("Kernel doesn't support ppp_generic - "
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- "needed for PPPoL2TP");
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-#else
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+#if !defined(__linux__)
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fatal("No PPPoL2TP support on this OS");
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#endif
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add_options(pppol2tp_options);
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