diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu-helper')
3 files changed, 40 insertions, 183 deletions
diff --git a/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper b/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper deleted file mode 100755 index f057d4eef0..0000000000 --- a/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper +++ /dev/null @@ -1,25 +0,0 @@ -#! /bin/sh -# Copyright 2020 Garmin Ltd. or its subsidiaries -# -# SPDX-License-Identifier: GPL-2.0 -# -# Attempts to find and exec the host qemu-bridge-helper program - -# If the QEMU_BRIDGE_HELPER variable is set by the user, exec it. -if [ -n "$QEMU_BRIDGE_HELPER" ]; then - exec "$QEMU_BRIDGE_HELPER" "$@" -fi - -# Search common paths for the helper program -BN="qemu-bridge-helper" -PATHS="/usr/libexec/ /usr/lib/qemu/" - -for p in $PATHS; do - if [ -e "$p/$BN" ]; then - exec "$p/$BN" "$@" - fi -done - -echo "$BN not found!" > /dev/stderr -exit 1 - diff --git a/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper.c b/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper.c new file mode 100644 index 0000000000..c34aa00567 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu-helper/qemu-oe-bridge-helper.c @@ -0,0 +1,40 @@ +/* + * Copyright 2022 Garmin Ltd. or its subsidiaries + * + * SPDX-License-Identifier: GPL-2.0 + * + * Attempts to find and exec the host qemu-bridge-helper program + */ + +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <stdlib.h> + +void try_program(char const* path, char** args) { + if (access(path, X_OK) == 0) { + execv(path, args); + } +} + +int main(int argc, char** argv) { + char* var; + + var = getenv("QEMU_BRIDGE_HELPER"); + if (var && var[0] != '\0') { + execvp(var, argv); + return 1; + } + + if (argc == 2 && strcmp(argv[1], "--help") == 0) { + fprintf(stderr, "Helper function to find and exec qemu-bridge-helper. Set QEMU_BRIDGE_HELPER to override default search path\n"); + return 0; + } + + try_program("/usr/libexec/qemu-bridge-helper", argv); + try_program("/usr/lib/qemu/qemu-bridge-helper", argv); + + fprintf(stderr, "No bridge helper found\n"); + return 1; +} + diff --git a/meta/recipes-devtools/qemu/qemu-helper/tunctl.c b/meta/recipes-devtools/qemu/qemu-helper/tunctl.c deleted file mode 100644 index d745dd06cb..0000000000 --- a/meta/recipes-devtools/qemu/qemu-helper/tunctl.c +++ /dev/null @@ -1,158 +0,0 @@ -/* Copyright 2002 Jeff Dike - * Licensed under the GPL - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> -#include <pwd.h> -#include <grp.h> -#include <net/if.h> -#include <sys/ioctl.h> -#include <linux/if_tun.h> - -/* TUNSETGROUP appeared in 2.6.23 */ -#ifndef TUNSETGROUP -#define TUNSETGROUP _IOW('T', 206, int) -#endif - -static void Usage(char *name, int status) -{ - 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(status); -} - -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:h")) > 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, 1); - } - 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, 1); - } - break; - - case 't': - tun = optarg; - break; - case 'h': - Usage(name, 0); - break; - default: - Usage(name, 1); - } - } - - argv += optind; - argc -= optind; - - if(argc > 0) - Usage(name, 1); - - 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); -} |