X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=examples%2Fnfs-cp.c;fp=examples%2Fnfs-cp.c;h=fe9911de50b6e79c520086ab0413b23db05fd975;hb=ee872606f1e484f684276ec595f1e39d1f95b9a9;hp=0000000000000000000000000000000000000000;hpb=fab61e3d0384e61553b39860b923d41bc0cf17b1;p=deb_libnfs.git diff --git a/examples/nfs-cp.c b/examples/nfs-cp.c new file mode 100644 index 0000000..fe9911d --- /dev/null +++ b/examples/nfs-cp.c @@ -0,0 +1,270 @@ +/* + Copyright (C) by Ronnie Sahlberg 2013 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see . +*/ + +#define _FILE_OFFSET_BITS 64 +#define _GNU_SOURCE + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef AROS +#include "aros_compat.h" +#endif + + +#ifdef WIN32 +#include "win32_compat.h" +#pragma comment(lib, "ws2_32.lib") +WSADATA wsaData; +#else +#include +#include +#endif + +#ifdef HAVE_POLL_H +#include +#endif + +#ifdef HAVE_UNISTD_H +#include +#endif + +#include +#include +#include +#include +#include +#include "libnfs-zdr.h" +#include "libnfs.h" +#include "libnfs-raw.h" +#include "libnfs-raw-mount.h" + +struct file_context { + int is_nfs; + int fd; + struct nfs_context *nfs; + struct nfsfh *nfsfh; + struct nfs_url *url; +}; + +void usage(void) +{ + fprintf(stderr, "Usage: nfs-cp \n"); + fprintf(stderr, ", can either be a local file or " + "an nfs URL.\n"); + exit(0); +} + +static void +free_file_context(struct file_context *file_context) +{ + if (file_context->fd != -1) { + close(file_context->fd); + } + if (file_context->nfsfh != NULL) { + nfs_close(file_context->nfs, file_context->nfsfh); + } + if (file_context->nfs != NULL) { + nfs_destroy_context(file_context->nfs); + } + nfs_destroy_url(file_context->url); + free(file_context); +} + +static int +fstat_file(struct file_context *fc, struct stat *st) +{ + if (fc->is_nfs == 0) { + return fstat(fc->fd, st); + } else { + return nfs_fstat(fc->nfs, fc->nfsfh, st); + } +} + +static int64_t +file_pread(struct file_context *fc, char *buf, int64_t count, uint64_t off) +{ + if (fc->is_nfs == 0) { + lseek(fc->fd, off, SEEK_SET); + return read(fc->fd, buf, count); + } else { + return nfs_pread(fc->nfs, fc->nfsfh, off, count, buf); + } +} + +static int64_t +file_pwrite(struct file_context *fc, char *buf, int64_t count, uint64_t off) +{ + if (fc->is_nfs == 0) { + lseek(fc->fd, off, SEEK_SET); + return write(fc->fd, buf, count); + } else { + return nfs_pwrite(fc->nfs, fc->nfsfh, off, count, buf); + } +} + +static struct file_context * +open_file(const char *url, int flags) +{ + struct file_context *file_context; + + file_context = malloc(sizeof(struct file_context)); + if (file_context == NULL) { + fprintf(stderr, "Failed to malloc file_context\n"); + return NULL; + } + file_context->is_nfs = 0; + file_context->fd = -1; + file_context->nfs = NULL; + file_context->nfsfh = NULL; + file_context->url = NULL; + + if (strncmp(url, "nfs://", 6)) { + file_context->is_nfs = 0; + file_context->fd = open(url, flags, 0660); + if (file_context->fd == -1) { + fprintf(stderr, "Failed to open %s\n", url); + free_file_context(file_context); + return NULL; + } + return file_context; + } + + file_context->is_nfs = 1; + + file_context->nfs = nfs_init_context(); + if (file_context->nfs == NULL) { + fprintf(stderr, "failed to init context\n"); + free_file_context(file_context); + return NULL; + } + + file_context->url = nfs_parse_url_full(file_context->nfs, url); + if (file_context->url == NULL) { + fprintf(stderr, "%s\n", nfs_get_error(file_context->nfs)); + free_file_context(file_context); + return NULL; + } + + if (nfs_mount(file_context->nfs, file_context->url->server, + file_context->url->path) != 0) { + fprintf(stderr, "Failed to mount nfs share : %s\n", + nfs_get_error(file_context->nfs)); + free_file_context(file_context); + return NULL; + } + + if (flags == O_RDONLY) { + if (nfs_open(file_context->nfs, file_context->url->file, flags, + &file_context->nfsfh) != 0) { + fprintf(stderr, "Failed to open file %s: %s\n", + file_context->url->file, + nfs_get_error(file_context->nfs)); + free_file_context(file_context); + return NULL; + } + } else { + if (nfs_creat(file_context->nfs, file_context->url->file, 0660, + &file_context->nfsfh) != 0) { + fprintf(stderr, "Failed to creat file %s: %s\n", + file_context->url->file, + nfs_get_error(file_context->nfs)); + free_file_context(file_context); + return NULL; + } + } + return file_context; +} + +#define BUFSIZE 1024*1024 +static char buf[BUFSIZE]; + +int main(int argc, char *argv[]) +{ + int ret; + struct stat st; + struct file_context *src; + struct file_context *dst; + uint64_t off; + int64_t count; + +#ifdef WIN32 + if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) { + printf("Failed to start Winsock2\n"); + return 10; + } +#endif + +#ifdef AROS + aros_init_socket(); +#endif + + if (argc != 3) { + usage(); + } + + src = open_file(argv[1], O_RDONLY); + if (src == NULL) { + fprintf(stderr, "Failed to open %s\n", argv[1]); + return 10; + } + + dst = open_file(argv[2], O_WRONLY|O_CREAT|O_TRUNC); + if (dst == NULL) { + fprintf(stderr, "Failed to open %s\n", argv[2]); + free_file_context(src); + return 10; + } + + if (fstat_file(src, &st) != 0) { + fprintf(stderr, "Failed to fstat source file\n"); + free_file_context(src); + free_file_context(dst); + return 10; + } + + off = 0; + while (off < st.st_size) { + count = st.st_size - off; + if (count > BUFSIZE) { + count = BUFSIZE; + } + count = file_pread(src, buf, count, off); + if (count < 0) { + fprintf(stderr, "Failed to read from source file\n"); + free_file_context(src); + free_file_context(dst); + return 10; + } + count = file_pwrite(dst, buf, count, off); + if (count < 0) { + fprintf(stderr, "Failed to write to dest file\n"); + free_file_context(src); + free_file_context(dst); + return 10; + } + + off += count; + } + printf("copied %d bytes\n", (int)off); + + free_file_context(src); + free_file_context(dst); + + return 0; +}