diff options
Diffstat (limited to 'networking/libiproute/iptunnel.c')
| -rw-r--r-- | networking/libiproute/iptunnel.c | 80 |
1 files changed, 34 insertions, 46 deletions
diff --git a/networking/libiproute/iptunnel.c b/networking/libiproute/iptunnel.c index b12bceb..90d0e11 100644 --- a/networking/libiproute/iptunnel.c +++ b/networking/libiproute/iptunnel.c @@ -14,8 +14,6 @@ * Phil Karn <karn@ka9q.ampr.org> 990408: "pmtudisc" flag */ -//#include <sys/socket.h> -//#include <sys/ioctl.h> #include <netinet/ip.h> #include <net/if.h> #include <net/if_arp.h> @@ -38,9 +36,7 @@ static int do_ioctl_get_ifindex(char *dev) strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name)); fd = xsocket(AF_INET, SOCK_DGRAM, 0); - if (ioctl(fd, SIOCGIFINDEX, &ifr)) { - bb_perror_msg_and_die("SIOCGIFINDEX"); - } + xioctl(fd, SIOCGIFINDEX, &ifr); close(fd); return ifr.ifr_ifindex; } @@ -49,30 +45,26 @@ static int do_ioctl_get_iftype(char *dev) { struct ifreq ifr; int fd; + int err; strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name)); fd = xsocket(AF_INET, SOCK_DGRAM, 0); - if (ioctl(fd, SIOCGIFHWADDR, &ifr)) { - bb_perror_msg("SIOCGIFHWADDR"); - return -1; - } + err = ioctl_or_warn(fd, SIOCGIFHWADDR, &ifr); close(fd); - return ifr.ifr_addr.sa_family; + return err ? -1 : ifr.ifr_addr.sa_family; } static char *do_ioctl_get_ifname(int idx) { struct ifreq ifr; int fd; + int err; ifr.ifr_ifindex = idx; fd = xsocket(AF_INET, SOCK_DGRAM, 0); - if (ioctl(fd, SIOCGIFNAME, &ifr)) { - bb_perror_msg("SIOCGIFNAME"); - return NULL; - } + err = ioctl_or_warn(fd, SIOCGIFNAME, &ifr); close(fd); - return xstrndup(ifr.ifr_name, sizeof(ifr.ifr_name)); + return err ? NULL : xstrndup(ifr.ifr_name, sizeof(ifr.ifr_name)); } static int do_get_ioctl(const char *basedev, struct ip_tunnel_parm *p) @@ -84,10 +76,7 @@ static int do_get_ioctl(const char *basedev, struct ip_tunnel_parm *p) strncpy(ifr.ifr_name, basedev, sizeof(ifr.ifr_name)); ifr.ifr_ifru.ifru_data = (void*)p; fd = xsocket(AF_INET, SOCK_DGRAM, 0); - err = ioctl(fd, SIOCGETTUNNEL, &ifr); - if (err) { - bb_perror_msg("SIOCGETTUNNEL"); - } + err = ioctl_or_warn(fd, SIOCGETTUNNEL, &ifr); close(fd); return err; } @@ -105,9 +94,15 @@ static int do_add_ioctl(int cmd, const char *basedev, struct ip_tunnel_parm *p) } ifr.ifr_ifru.ifru_data = (void*)p; fd = xsocket(AF_INET, SOCK_DGRAM, 0); - if (ioctl(fd, cmd, &ifr)) { - bb_perror_msg_and_die("ioctl"); - } +#if ENABLE_IOCTL_HEX2STR_ERROR + /* #define magic will turn ioctl# into string */ + if (cmd == SIOCCHGTUNNEL) + xioctl(fd, SIOCCHGTUNNEL, &ifr); + else + xioctl(fd, SIOCADDTUNNEL, &ifr); +#else + xioctl(fd, cmd, &ifr); +#endif close(fd); return 0; } @@ -125,9 +120,7 @@ static int do_del_ioctl(const char *basedev, struct ip_tunnel_parm *p) } ifr.ifr_ifru.ifru_data = (void*)p; fd = xsocket(AF_INET, SOCK_DGRAM, 0); - if (ioctl(fd, SIOCDELTUNNEL, &ifr)) { - bb_perror_msg_and_die("SIOCDELTUNNEL"); - } + xioctl(fd, SIOCDELTUNNEL, &ifr); close(fd); return 0; } @@ -526,29 +519,24 @@ static int do_show(int argc, char **argv) /* Return value becomes exitcode. It's okay to not return at all */ int do_iptunnel(int argc, char **argv) { - static const char * const keywords[] = { + static const char *const keywords[] = { "add", "change", "delete", "show", "list", "lst", NULL }; - enum {ARG_add = 1, ARG_change, ARG_del, ARG_show, ARG_list, ARG_lst}; - smalluint key = 4; /* show */ - if (argc > 0) { - key = index_in_substr_array(keywords, *argv) +1; + enum { ARG_add = 0, ARG_change, ARG_del, ARG_show, ARG_list, ARG_lst }; + int key; + + if (argc) { + key = index_in_substr_array(keywords, *argv); + if (key < 0) + bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name); --argc; ++argv; - } else - return do_show(0, NULL); - if (key < ARG_add) - bail: - bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name); - - if (key == ARG_add) - return do_add(SIOCADDTUNNEL, argc, argv); - if (key == ARG_change) - return do_add(SIOCCHGTUNNEL, argc, argv); - if (key == ARG_del) - return do_del(argc, argv); - if (key == ARG_show || key == ARG_list || key == ARG_lst) - return do_show(argc, argv); - /* be gentle to gcc; avoid warning about non returning */ - goto bail; /* never reached */ + if (key == ARG_add) + return do_add(SIOCADDTUNNEL, argc, argv); + if (key == ARG_change) + return do_add(SIOCCHGTUNNEL, argc, argv); + if (key == ARG_del) + return do_del(argc, argv); + } + return do_show(argc, argv); } |