system/ulib/driver-info/driver-info-app.c

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include <driver-info/driver-info.h>

static void callback(zircon_driver_note_payload_t* dn,
                     const zx_bind_inst_t* binding,
                     void* cookie) {
    printf("name:    %s\n", dn->name);
    printf("vendor:  %s\n", dn->vendor);
    printf("version: %s\n", dn->version);
    printf("binding:\n");

    char line[256];
    for (size_t n = 0; n < dn->bindcount; n++) {
        di_dump_bind_inst(&binding[n], line, sizeof(line));
        printf("  %s\n", line);
    }
}

int main(int argc, char** argv) {
    while (argc > 1) {
        int fd;
        printf("[%s]\n", argv[1]);
        if ((fd = open(argv[1], O_RDONLY)) >= 0) {
            if (di_read_driver_info(fd, NULL, callback) < 0) {
                printf("error: no information found\n");
            }
            close(fd);
        } else {
            printf("error: cannot open file\n");
        }
        argc--;
        argv++;
    }
    return 0;
}