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/*
* 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 <unistd.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;
/* Copy arguments so that they are a NULL terminated list, skipping argv[0]
* since it is this program name */
char** args = malloc(argc * sizeof(char*));
for (int i = 0; i < argc - 1; i++) {
args[i] = argv[i + 1];
}
args[argc - 1] = NULL;
var = getenv("QEMU_BRIDGE_HELPER");
if (var && var[0] != '\0') {
execvp(var, args);
return 1;
}
try_program("/usr/libexec/qemu-bridge-helper", args);
try_program("/usr/lib/qemu/qemu-bridge-helper", args);
fprintf(stderr, "No bridge helper found\n");
return 1;
}
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