[deb_libnfs.git] / examples / nfs-cp.c

/* 
   Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 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 <http://www.gnu.org/licenses/>.
*/

#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"
#else
#include <sys/stat.h>
#include <string.h>
#endif
 
#ifdef HAVE_POLL_H
#include <poll.h>
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <fcntl.h>
#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;
};

void usage(void)
{
	fprintf(stderr, "Usage: nfs-cp <src> <dst>\n");
	fprintf(stderr, "<src>,<dst> 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);
	}
	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;
	char *server = NULL, *path = NULL, *file = NULL, *strp;

	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;
	

	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;
	}

	server = strdup(url + 6);
	if (server == NULL) {
		fprintf(stderr, "Failed to strdup server string\n");
		free_file_context(file_context);
		return NULL;
	}
	if (server[0] == '/' || server[0] == '\0') {
		fprintf(stderr, "Invalid server string.\n");
		free(server);
		free_file_context(file_context);
		return NULL;
	}
	strp = strchr(server, '/');
	path = strdup(strp);
	*strp = 0;
	if (path == NULL) {
		fprintf(stderr, "Invalid URL specified.\n");
		free(server);
		free_file_context(file_context);
		return NULL;
	}

	strp = strrchr(path, '/');
	if (strp == NULL) {
		fprintf(stderr, "Invalid URL specified.\n");
		free(path);
		free(server);
		free_file_context(file_context);
		return NULL;
	}
	file = strdup(strp);
	*strp = 0;

	if (nfs_mount(file_context->nfs, server, path) != 0) {
 		fprintf(stderr, "Failed to mount nfs share : %s\n",
			       nfs_get_error(file_context->nfs));
		free(file);
		free(path);
		free(server);
		free_file_context(file_context);
		return NULL;
	}

	if (flags == O_RDONLY) {
		if (nfs_open(file_context->nfs, file, flags,
				&file_context->nfsfh) != 0) {
 			fprintf(stderr, "Failed to open file : %s\n",
				       nfs_get_error(file_context->nfs));
			free(file);
			free(path);
			free(server);
			free_file_context(file_context);
			return NULL;
		}
	} else {
		if (nfs_creat(file_context->nfs, file, 0660,
				&file_context->nfsfh) != 0) {
 			fprintf(stderr, "Failed to creat file %s  %s\n", file,
				       nfs_get_error(file_context->nfs));
			free(file);
			free(path);
			free(server);
			free_file_context(file_context);
			return NULL;
		}
	}

	free(file);
	free(path);
	free(server);

	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)count);

	free_file_context(src);
	free_file_context(dst);

	return 0;
}
Commit	Line	Data
a6bc1707 RS	1	/*
	2	Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2013
	3
	4	This program is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU General Public License as published by
	6	the Free Software Foundation; either version 3 of the License, or
	7	(at your option) any later version.
	8
	9	This program is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU General Public License for more details.
	13
	14	You should have received a copy of the GNU General Public License
	15	along with this program; if not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18	#define _FILE_OFFSET_BITS 64
	19	#define _GNU_SOURCE
	20
	21	#ifdef HAVE_CONFIG_H
	22	#include "config.h"
	23	#endif
	24
	25	#ifdef AROS
	26	#include "aros_compat.h"
	27	#endif
	28
	29
	30	#ifdef WIN32
	31	#include "win32_compat.h"
	32	#else
	33	#include <sys/stat.h>
	34	#include <string.h>
	35	#endif
	36
	37	#ifdef HAVE_POLL_H
	38	#include <poll.h>
	39	#endif
	40
	41	#ifdef HAVE_UNISTD_H
	42	#include <unistd.h>
	43	#endif
	44
	45	#include <stdio.h>
	46	#include <stdlib.h>
	47	#include <stdint.h>
	48	#include <sys/types.h>
	49	#include <fcntl.h>
	50	#include "libnfs-zdr.h"
	51	#include "libnfs.h"
	52	#include "libnfs-raw.h"
	53	#include "libnfs-raw-mount.h"
	54
	55	struct file_context {
	56	int is_nfs;
	57	int fd;
	58	struct nfs_context *nfs;
	59	struct nfsfh *nfsfh;
	60	};
	61
	62	void usage(void)
	63	{
	64	fprintf(stderr, "Usage: nfs-cp <src> <dst>\n");
65	fprintf(stderr, "<src>,<dst> can either be a local file or "
66	"an nfs URL.\n");
67	exit(0);
68	}
69
70	static void
71	free_file_context(struct file_context *file_context)
72	{
73	if (file_context->fd != -1) {
74	close(file_context->fd);
75	}
76	if (file_context->nfsfh != NULL) {
77	nfs_close(file_context->nfs, file_context->nfsfh);
78	}
79	if (file_context->nfs != NULL) {
80	nfs_destroy_context(file_context->nfs);
81	}
82	free(file_context);
83	}
84
85	static int
86	fstat_file(struct file_context fc, struct stat st)
87	{
88	if (fc->is_nfs == 0) {
89	return fstat(fc->fd, st);
90	} else {
91	return nfs_fstat(fc->nfs, fc->nfsfh, st);
92	}
93	}
94
95	static int64_t
96	file_pread(struct file_context fc, char buf, int64_t count, uint64_t off)
97	{
98	if (fc->is_nfs == 0) {
3d574b1e RS	99	lseek(fc->fd, off, SEEK_SET);
3d574b1e RS	100	return read(fc->fd, buf, count);
a6bc1707 RS	101	} else {
	102	return nfs_pread(fc->nfs, fc->nfsfh, off, count, buf);
	103	}
	104	}
	105
	106	static int64_t
	107	file_pwrite(struct file_context fc, char buf, int64_t count, uint64_t off)
	108	{
	109	if (fc->is_nfs == 0) {
3d574b1e RS	110	lseek(fc->fd, off, SEEK_SET);
3d574b1e RS	111	return write(fc->fd, buf, count);
a6bc1707 RS	112	} else {
	113	return nfs_pwrite(fc->nfs, fc->nfsfh, off, count, buf);
	114	}
	115	}
	116
	117	static struct file_context *
	118	open_file(const char *url, int flags)
	119	{
	120	struct file_context *file_context;
	121	char server = NULL, path = NULL, file = NULL, strp;
	122
	123	file_context = malloc(sizeof(struct file_context));
	124	if (file_context == NULL) {
	125	fprintf(stderr, "Failed to malloc file_context\n");
	126	return NULL;
	127	}
	128	file_context->is_nfs = 0;
	129	file_context->fd = -1;
	130	file_context->nfs = NULL;
	131	file_context->nfsfh = NULL;
	132
	133
	134	if (strncmp(url, "nfs://", 6)) {
	135	file_context->is_nfs = 0;
	136	file_context->fd = open(url, flags, 0660);
	137	if (file_context->fd == -1) {
	138	fprintf(stderr, "Failed to open %s\n", url);
	139	free_file_context(file_context);
	140	return NULL;
	141	}
	142	return file_context;
	143	}
	144
	145	file_context->is_nfs = 1;
	146
	147	file_context->nfs = nfs_init_context();
	148	if (file_context->nfs == NULL) {
	149	fprintf(stderr, "failed to init context\n");
	150	free_file_context(file_context);
	151	return NULL;
	152	}
	153
	154	server = strdup(url + 6);
	155	if (server == NULL) {
	156	fprintf(stderr, "Failed to strdup server string\n");
	157	free_file_context(file_context);
	158	return NULL;
	159	}
	160	if (server[0] == '/' \|\| server[0] == '\0') {
	161	fprintf(stderr, "Invalid server string.\n");
	162	free(server);
	163	free_file_context(file_context);
	164	return NULL;
	165	}
	166	strp = strchr(server, '/');
	167	path = strdup(strp);
	168	*strp = 0;
	169	if (path == NULL) {
	170	fprintf(stderr, "Invalid URL specified.\n");
	171	free(server);
	172	free_file_context(file_context);
	173	return NULL;
	174	}
	175
176	strp = strrchr(path, '/');
177	if (strp == NULL) {
178	fprintf(stderr, "Invalid URL specified.\n");
179	free(path);
180	free(server);
181	free_file_context(file_context);
182	return NULL;
183	}
184	file = strdup(strp);
185	*strp = 0;
186
187	if (nfs_mount(file_context->nfs, server, path) != 0) {
188	fprintf(stderr, "Failed to mount nfs share : %s\n",
189	nfs_get_error(file_context->nfs));
190	free(file);
191	free(path);
192	free(server);
193	free_file_context(file_context);
194	return NULL;
195	}
196
197	if (flags == O_RDONLY) {
198	if (nfs_open(file_context->nfs, file, flags,
199	&file_context->nfsfh) != 0) {
200	fprintf(stderr, "Failed to open file : %s\n",
201	nfs_get_error(file_context->nfs));
202	free(file);
203	free(path);
204	free(server);
205	free_file_context(file_context);
206	return NULL;
207	}
208	} else {
209	if (nfs_creat(file_context->nfs, file, 0660,
210	&file_context->nfsfh) != 0) {
211	fprintf(stderr, "Failed to creat file %s %s\n", file,
212	nfs_get_error(file_context->nfs));
213	free(file);
214	free(path);
215	free(server);
216	free_file_context(file_context);
217	return NULL;
218	}
219	}
220
221	free(file);
222	free(path);
223	free(server);
224
225	return file_context;
226	}
227
228	#define BUFSIZE 1024*1024
229	static char buf[BUFSIZE];
230
231	int main(int argc, char *argv[])
232	{
233	int ret;
234	struct stat st;
235	struct file_context *src;
236	struct file_context *dst;
237	uint64_t off;
238	int64_t count;
239
240	#ifdef WIN32
241	if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
242	printf("Failed to start Winsock2\n");
243	return 10;
244	}
245	#endif
246
247	#ifdef AROS
248	aros_init_socket();
249	#endif
250
251	if (argc != 3) {
252	usage();
253	}
254
255	src = open_file(argv[1], O_RDONLY);
256	if (src == NULL) {
257	fprintf(stderr, "Failed to open %s\n", argv[1]);
258	return 10;
259	}
260
261	dst = open_file(argv[2], O_WRONLY\|O_CREAT\|O_TRUNC);
262	if (dst == NULL) {
263	fprintf(stderr, "Failed to open %s\n", argv[2]);
264	free_file_context(src);
265	return 10;
266	}
267
268	if (fstat_file(src, &st) != 0) {
269	fprintf(stderr, "Failed to fstat source file\n");
270	free_file_context(src);
271	free_file_context(dst);
272	return 10;
273	}
274
275	off = 0;
276	while (off < st.st_size) {
277	count = st.st_size - off;
278	if (count > BUFSIZE) {
279	count = BUFSIZE;
280	}
281	count = file_pread(src, buf, count, off);
282	if (count < 0) {
283	fprintf(stderr, "Failed to read from source file\n");
284	free_file_context(src);
285	free_file_context(dst);
286	return 10;
287	}
288	count = file_pwrite(dst, buf, count, off);
289	if (count < 0) {
290	fprintf(stderr, "Failed to write to dest file\n");
291	free_file_context(src);
292	free_file_context(dst);
293	return 10;
294	}
295
296	off += count;
297	}
298	printf("copied %d bytes\n", (int)count);
299
300	free_file_context(src);
301	free_file_context(dst);
302
303	return 0;
304	}