From 29d6678fd546377459ef75cf54abeef5b969b5cf Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 27 Aug 2010 15:14:24 +0100 Subject: Major layout change to the packages directory Having one monolithic packages directory makes it hard to find things and is generally overwhelming. This commit splits it into several logical sections roughly based on function, recipes.txt gives more information about the classifications used. The opportunity is also used to switch from "packages" to "recipes" as used in OpenEmbedded as the term "packages" can be confusing to people and has many different meanings. Not all recipes have been classified yet, this is just a first pass at separating things out. Some packages are moved to meta-extras as they're no longer actively used or maintained. Signed-off-by: Richard Purdie --- meta/recipes-devtools/qemu/qemu-helper/tunctl.c | 156 ++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu-helper/tunctl.c (limited to 'meta/recipes-devtools/qemu/qemu-helper/tunctl.c') diff --git a/meta/recipes-devtools/qemu/qemu-helper/tunctl.c b/meta/recipes-devtools/qemu/qemu-helper/tunctl.c new file mode 100644 index 0000000000..16e24a2add --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu-helper/tunctl.c @@ -0,0 +1,156 @@ +/* Copyright 2002 Jeff Dike + * Licensed under the GPL + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* TUNSETGROUP appeared in 2.6.23 */ +#ifndef TUNSETGROUP +#define TUNSETGROUP _IOW('T', 206, int) +#endif + +static void Usage(char *name) +{ + fprintf(stderr, "Create: %s [-b] [-u owner] [-g group] [-t device-name] " + "[-f tun-clone-device]\n", name); + fprintf(stderr, "Delete: %s -d device-name [-f tun-clone-device]\n\n", + name); + fprintf(stderr, "The default tun clone device is /dev/net/tun - some systems" + " use\n/dev/misc/net/tun instead\n\n"); + fprintf(stderr, "-b will result in brief output (just the device name)\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + struct ifreq ifr; + struct passwd *pw; + struct group *gr; + uid_t owner = -1; + gid_t group = -1; + int tap_fd, opt, delete = 0, brief = 0; + char *tun = "", *file = "/dev/net/tun", *name = argv[0], *end; + + while((opt = getopt(argc, argv, "bd:f:t:u:g:")) > 0){ + switch(opt) { + case 'b': + brief = 1; + break; + case 'd': + delete = 1; + tun = optarg; + break; + case 'f': + file = optarg; + break; + case 'u': + pw = getpwnam(optarg); + if(pw != NULL){ + owner = pw->pw_uid; + break; + } + owner = strtol(optarg, &end, 0); + if(*end != '\0'){ + fprintf(stderr, "'%s' is neither a username nor a numeric uid.\n", + optarg); + Usage(name); + } + break; + case 'g': + gr = getgrnam(optarg); + if(gr != NULL){ + group = gr->gr_gid; + break; + } + group = strtol(optarg, &end, 0); + if(*end != '\0'){ + fprintf(stderr, "'%s' is neither a groupname nor a numeric group.\n", + optarg); + Usage(name); + } + break; + + case 't': + tun = optarg; + break; + case 'h': + default: + Usage(name); + } + } + + argv += optind; + argc -= optind; + + if(argc > 0) + Usage(name); + + if((tap_fd = open(file, O_RDWR)) < 0){ + fprintf(stderr, "Failed to open '%s' : ", file); + perror(""); + exit(1); + } + + memset(&ifr, 0, sizeof(ifr)); + + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; + strncpy(ifr.ifr_name, tun, sizeof(ifr.ifr_name) - 1); + if(ioctl(tap_fd, TUNSETIFF, (void *) &ifr) < 0){ + perror("TUNSETIFF"); + exit(1); + } + + if(delete){ + if(ioctl(tap_fd, TUNSETPERSIST, 0) < 0){ + perror("disabling TUNSETPERSIST"); + exit(1); + } + printf("Set '%s' nonpersistent\n", ifr.ifr_name); + } + else { + /* emulate behaviour prior to TUNSETGROUP */ + if(owner == -1 && group == -1) { + owner = geteuid(); + } + + if(owner != -1) { + if(ioctl(tap_fd, TUNSETOWNER, owner) < 0){ + perror("TUNSETOWNER"); + exit(1); + } + } + if(group != -1) { + if(ioctl(tap_fd, TUNSETGROUP, group) < 0){ + perror("TUNSETGROUP"); + exit(1); + } + } + + if(ioctl(tap_fd, TUNSETPERSIST, 1) < 0){ + perror("enabling TUNSETPERSIST"); + exit(1); + } + + if(brief) + printf("%s\n", ifr.ifr_name); + else { + printf("Set '%s' persistent and owned by", ifr.ifr_name); + if(owner != -1) + printf(" uid %d", owner); + if(group != -1) + printf(" gid %d", group); + printf("\n"); + } + } + return(0); +} -- cgit v1.2.3