libnfs库API函数调用举例

#include <stdio.h>  
#include <stdlib.h>  
#include <string.h>  
#include <libnfs.h>  
  
int main() {  
    int result;  
    struct nfs_context *nfs;  
    struct nfs_args args;  
    char *server = "your_server_ip";  
    char *export = "/path/to/export";  
    char *path = "/path/to/file";  
    char buffer[1024];  
    size_t bytes_written;  
  
    // 初始化NFS会话  
    result = nfs_init(&nfs);  
    if (result != NFS_OK) {  
        fprintf(stderr, "Failed to initialize NFS context: %s\n", nfs_strerror(result));  
        exit(EXIT_FAILURE);  
    }  
  
    // 设置NFS服务器和导出路径  
    memset(&args, 0, sizeof(args));  
    args.server = server;  
    args.export = export;  
    args.path = path;  
  
    // 挂载NFS文件系统  
    result = nfs_mount(nfs, &args);  
    if (result != NFS_OK) {  
        fprintf(stderr, "Failed to mount NFS file system: %s\n", nfs_strerror(result));  
        exit(EXIT_FAILURE);  
    }  
  
    // 从NFS文件系统读取数据到缓冲区  
    result = nfs_read(nfs, buffer, sizeof(buffer));  
    if (result != NFS_OK) {  
        fprintf(stderr, "Failed to read from NFS file system: %s\n", nfs_strerror(result));  
        exit(EXIT_FAILURE);  
    } else {  
        printf("Read %ld bytes from NFS file system:\n", result);  
        fwrite(buffer, 1, result, stdout); // 将读取的数据写入标准输出  
    }  
  
    // 向NFS文件系统写入数据  
    strcpy(buffer, "Hello, NFS!"); // 将要写入的数据放入缓冲区  
    result = nfs_write(nfs, buffer, strlen(buffer));  
    if (result != NFS_OK) {  
        fprintf(stderr, "Failed to write to NFS file system: %s\n", nfs_strerror(result));  
        exit(EXIT_FAILURE);  
    } else {  
        printf("Wrote %ld bytes to NFS file system\n", result);  
    }  
  
    // 卸载NFS文件系统并释放资源  
    result = nfs_umount(nfs);  
    if (result != NFS_OK) {  
        fprintf(stderr, "Failed to unmount NFS file system: %s\n", nfs_strerror(result));  
        exit(EXIT_FAILURE);  
    } else {  
        printf("Successfully unmounted NFS file system\n");  
    }  
    nfs_destroy(nfs); // 销毁NFS上下文，释放相关资源  
  
    return 0;  
}