WebSVN – HelenOS – Diff – /trunk/uspace/app/bdsh/cmds/modules/cp/cp.c


/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the original program's authors nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <fcntl.h>
 
#include "config.h"
#include "util.h"
#include "errors.h"
#include "entry.h"
#include "cp.h"
#include "cmds.h"
 
#define CP_VERSION "0.0.1"
#define CP_DEFAULT_BUFLEN  1024
 
static const char *cmdname = "cp";
 
static struct option const long_options[] = {
    { "buffer", required_argument, 0, 'b' },
    { "force", no_argument, 0, 'f' },
    { "recursive", no_argument, 0, 'r' },
    { "help", no_argument, 0, 'h' },
    { "version", no_argument, 0, 'v' },
    { "verbose", no_argument, 0, 'V' },
    { 0, 0, 0, 0 }
};
 
static int strtoint(const char *s1)
{
    long t1;
 
    if (-1 == (t1 = strtol(s1, (char **) NULL, 10)))
        return -1;
 
    if (t1 <= 0)
        return -1;
 
    return (int) t1;
}
 
static int64_t copy_file(const char *src, const char *dest, size_t blen, int vb)
{
    int fd1, fd2, bytes = 0;
    off_t total = 0;
    int64_t copied = 0;
    char *buff = NULL;
 
    if (vb)
        printf("Copying %s to %s\n", src, dest);
 
    if (-1 == (fd1 = open(src, O_RDONLY))) {
        printf("Unable to open source file %s\n", src);
        return -1;
    }
 
    if (-1 == (fd2 = open(dest, O_CREAT))) {
        printf("Unable to open destination file %s\n", dest);
        close(fd1);
        return -1;
    }
 
    total = lseek(fd1, 0, SEEK_END);
 
    if (vb)
        printf("%d bytes to copy\n", total);
 
    lseek(fd1, 0, SEEK_SET);
 
    if (NULL == (buff = (char *) malloc(blen))) {
        printf("Unable to allocate enough memory to read %s\n",
            src);
        copied = -1;
        goto out;
    }
 
    for (;;) {
        ssize_t res;
 
        bytes = read(fd1, buff, blen);
        if (bytes <= 0)
            break;
        copied += bytes;
        res = bytes;
        do {
            /*
             * Theoretically, it may not be enough to call write()
             * only once. Also the previous read() may have
             * returned less data than requested.
             */
            bytes = write(fd2, buff, res);
            if (bytes < 0)
                goto err;
            res -= bytes;
        } while (res > 0);
 
        /* TODO: re-insert assert() once this is stand alone,
         * removed as abort() exits the entire shell
         */
        if (res != 0) {
            printf("\n%d more bytes than actually exist were copied\n", res);
            goto err;
        }
    }
 
    if (bytes < 0) {
err:
        printf("\nError copying %s, (%d)\n", src, bytes);
        copied = bytes;
    }
 
out:
    close(fd1);
    close(fd2);
    if (buff)
        free(buff);
    return copied;
}
 
void help_cmd_cp(unsigned int level)
{
    static char helpfmt[] =
        "Usage:  %s [options] <source> <dest>\n"
        "Options: (* indicates not yet implemented)\n"
        "  -h, --help       A short option summary\n"
        "  -v, --version    Print version information and exit\n"
        "* -V, --verbose    Be annoyingly noisy about what's being done\n"
        "* -f, --force      Do not complain when <dest> exists\n"
        "* -r, --recursive  Copy entire directories\n"
        "  -b, --buffer ## Set the read buffer size to ##\n"
        "Currently, %s is under development, some options may not work.\n";
    if (level == HELP_SHORT) {
        printf("`%s' copies files and directories\n", cmdname);
    } else {
        help_cmd_cp(HELP_SHORT);
        printf(helpfmt, cmdname, cmdname);
    }
 
    return;
}
 
int cmd_cp(char **argv)
{
    unsigned int argc, buffer = 0, verbose = 0;
    int c, opt_ind;
    int64_t ret;
 
    argc = cli_count_args(argv);
 
    for (c = 0, optind = 0, opt_ind = 0; c != -1;) {
        c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind);
        switch (c) {
        case 'h':
            help_cmd_cp(1);
            return CMD_SUCCESS;
        case 'v':
            printf("%d\n", CP_VERSION);
            return CMD_SUCCESS;
        case 'V':
            verbose = 1;
            break;
        case 'f':
            break;
        case 'r':
            break;
        case 'b':
            if (-1 == (buffer = strtoint(optarg))) {
                printf("%s: Invalid buffer specification, "
                    "(should be a number greater than zero)\n",
                    cmdname);
                return CMD_FAILURE;
            }
            if (verbose)
                printf("Buffer = %d\n", buffer);
            break;
        }
    }
 
    if (buffer == 0)
        buffer = CP_DEFAULT_BUFLEN;
 
    argc -= optind;
 
    if (argc != 2) {
        printf("%s: invalid number of arguments. Try %s --help\n",
            cmdname, cmdname);
        return CMD_FAILURE;
    }
 
    ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose);
 
    if (verbose)
        printf("%d bytes copied\n", ret);
 
    if (ret >= 0)
        return CMD_SUCCESS;
    else
        return CMD_FAILURE;
}
 
 

Rev 3651	Rev 3815
1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>	1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
2	* All rights reserved.	2	* All rights reserved.
3	*	3	*
4	* Redistribution and use in source and binary forms, with or without	4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are met:	5	* modification, are permitted provided that the following conditions are met:
6	*	6	*
7	* Redistributions of source code must retain the above copyright notice, this	7	* Redistributions of source code must retain the above copyright notice, this
8	* list of conditions and the following disclaimer.	8	* list of conditions and the following disclaimer.
9	*	9	*
10	* Redistributions in binary form must reproduce the above copyright notice,	10	* Redistributions in binary form must reproduce the above copyright notice,
11	* this list of conditions and the following disclaimer in the documentation	11	* this list of conditions and the following disclaimer in the documentation
12	* and/or other materials provided with the distribution.	12	* and/or other materials provided with the distribution.
13	*	13	*
14	* Neither the name of the original program's authors nor the names of its	14	* Neither the name of the original program's authors nor the names of its
15	* contributors may be used to endorse or promote products derived from this	15	* contributors may be used to endorse or promote products derived from this
16	* software without specific prior written permission.	16	* software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"	18	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	19	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	20	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE	21	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR	22	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF	23	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS	24	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN	25	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)	26	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE	27	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28	* POSSIBILITY OF SUCH DAMAGE.	28	* POSSIBILITY OF SUCH DAMAGE.
29	*/	29	*/
30		30
31	#include <stdio.h>	31	#include <stdio.h>
32	#include <stdlib.h>	32	#include <stdlib.h>
33	#include <unistd.h>	33	#include <unistd.h>
34	#include <getopt.h>	34	#include <getopt.h>
35	#include <string.h>	35	#include <string.h>
36	#include <fcntl.h>	36	#include <fcntl.h>
37	#include <assert.h>	-
38	#include "config.h"	37	#include "config.h"
39	#include "util.h"	38	#include "util.h"
40	#include "errors.h"	39	#include "errors.h"
41	#include "entry.h"	40	#include "entry.h"
42	#include "cp.h"	41	#include "cp.h"
43	#include "cmds.h"	42	#include "cmds.h"
44		43
45	#define CP_VERSION "0.0.1"	44	#define CP_VERSION "0.0.1"
46	#define CP_DEFAULT_BUFLEN 1024	45	#define CP_DEFAULT_BUFLEN 1024
47		46
48	static const char *cmdname = "cp";	47	static const char *cmdname = "cp";
49		48
50	static struct option const long_options[] = {	49	static struct option const long_options[] = {
51	{ "buffer", required_argument, 0, 'b' },	50	{ "buffer", required_argument, 0, 'b' },
52	{ "force", no_argument, 0, 'f' },	51	{ "force", no_argument, 0, 'f' },
53	{ "recursive", no_argument, 0, 'r' },	52	{ "recursive", no_argument, 0, 'r' },
54	{ "help", no_argument, 0, 'h' },	53	{ "help", no_argument, 0, 'h' },
55	{ "version", no_argument, 0, 'v' },	54	{ "version", no_argument, 0, 'v' },
56	{ "verbose", no_argument, 0, 'V' },	55	{ "verbose", no_argument, 0, 'V' },
57	{ 0, 0, 0, 0 }	56	{ 0, 0, 0, 0 }
58	};	57	};
59		58
60	static int strtoint(const char *s1)	59	static int strtoint(const char *s1)
61	{	60	{
62	long t1;	61	long t1;
63		62
64	if (-1 == (t1 = strtol(s1, (char **) NULL, 10)))	63	if (-1 == (t1 = strtol(s1, (char **) NULL, 10)))
65	return -1;	64	return -1;
66		65
67	if (t1 <= 0)	66	if (t1 <= 0)
68	return -1;	67	return -1;
69		68
70	return (int) t1;	69	return (int) t1;
71	}	70	}
72		71
73	static int64_t copy_file(const char src, const char dest, size_t blen, int vb)	72	static int64_t copy_file(const char src, const char dest, size_t blen, int vb)
74	{	73	{
75	int fd1, fd2, bytes = 0;	74	int fd1, fd2, bytes = 0;
76	off_t total = 0;	75	off_t total = 0;
77	int64_t copied = 0;	76	int64_t copied = 0;
78	char *buff = NULL;	77	char *buff = NULL;
79		78
80	if (vb)	79	if (vb)
81	printf("Copying %s to %s\n", src, dest);	80	printf("Copying %s to %s\n", src, dest);
82		81
83	if (-1 == (fd1 = open(src, O_RDONLY))) {	82	if (-1 == (fd1 = open(src, O_RDONLY))) {
84	printf("Unable to open source file %s\n", src);	83	printf("Unable to open source file %s\n", src);
85	return -1;	84	return -1;
86	}	85	}
87		86
88	if (-1 == (fd2 = open(dest, O_CREAT))) {	87	if (-1 == (fd2 = open(dest, O_CREAT))) {
89	printf("Unable to open destination file %s\n", dest);	88	printf("Unable to open destination file %s\n", dest);
90	close(fd1);	89	close(fd1);
91	return -1;	90	return -1;
92	}	91	}
93		92
94	total = lseek(fd1, 0, SEEK_END);	93	total = lseek(fd1, 0, SEEK_END);
95		94
96	if (vb)	95	if (vb)
97	printf("%d bytes to copy\n", total);	96	printf("%d bytes to copy\n", total);
98		97
99	lseek(fd1, 0, SEEK_SET);	98	lseek(fd1, 0, SEEK_SET);
100		99
101	if (NULL == (buff = (char *) malloc(blen))) {	100	if (NULL == (buff = (char *) malloc(blen))) {
102	printf("Unable to allocate enough memory to read %s\n",	101	printf("Unable to allocate enough memory to read %s\n",
103	src);	102	src);
104	copied = -1;	103	copied = -1;
105	goto out;	104	goto out;
106	}	105	}
107		106
108	for (;;) {	107	for (;;) {
109	ssize_t res;	108	ssize_t res;
110		109
111	bytes = read(fd1, buff, blen);	110	bytes = read(fd1, buff, blen);
112	if (bytes <= 0)	111	if (bytes <= 0)
113	break;	112	break;
114	copied += bytes;	113	copied += bytes;
115	res = bytes;	114	res = bytes;
116	do {	115	do {
117	/*	116	/*
118	* Theoretically, it may not be enough to call write()	117	* Theoretically, it may not be enough to call write()
119	* only once. Also the previous read() may have	118	* only once. Also the previous read() may have
120	* returned less data than requested.	119	* returned less data than requested.
121	*/	120	*/
122	bytes = write(fd2, buff, res);	121	bytes = write(fd2, buff, res);
123	if (bytes < 0)	122	if (bytes < 0)
124	goto err;	123	goto err;
125	res -= bytes;	124	res -= bytes;
126	} while (res > 0);	125	} while (res > 0);
-		126
-		127	/* TODO: re-insert assert() once this is stand alone,
-		128	* removed as abort() exits the entire shell
-		129	*/
127	assert(res == 0);	130	if (res != 0) {
-		131	printf("\n%d more bytes than actually exist were copied\n", res);
-		132	goto err;
-		133	}
128	}	134	}
129		135
130	if (bytes < 0) {	136	if (bytes < 0) {
131	err:	137	err:
132	printf("Error copying %s, (%d)\n", src, bytes);	138	printf("\nError copying %s, (%d)\n", src, bytes);
133	copied = bytes;	139	copied = bytes;
134	}	140	}
135		141
136	out:	142	out:
137	close(fd1);	143	close(fd1);
138	close(fd2);	144	close(fd2);
139	if (buff)	145	if (buff)
140	free(buff);	146	free(buff);
141	return copied;	147	return copied;
142	}	148	}
143		149
144	void help_cmd_cp(unsigned int level)	150	void help_cmd_cp(unsigned int level)
145	{	151	{
146	static char helpfmt[] =	152	static char helpfmt[] =
147	"Usage: %s [options] <source> <dest>\n"	153	"Usage: %s [options] <source> <dest>\n"
148	"Options: (* indicates not yet implemented)\n"	154	"Options: (* indicates not yet implemented)\n"
149	" -h, --help A short option summary\n"	155	" -h, --help A short option summary\n"
150	" -v, --version Print version information and exit\n"	156	" -v, --version Print version information and exit\n"
151	"* -V, --verbose Be annoyingly noisy about what's being done\n"	157	"* -V, --verbose Be annoyingly noisy about what's being done\n"
152	"* -f, --force Do not complain when <dest> exists\n"	158	"* -f, --force Do not complain when <dest> exists\n"
153	"* -r, --recursive Copy entire directories\n"	159	"* -r, --recursive Copy entire directories\n"
154	" -b, --buffer ## Set the read buffer size to ##\n"	160	" -b, --buffer ## Set the read buffer size to ##\n"
155	"Currently, %s is under development, some options may not work.\n";	161	"Currently, %s is under development, some options may not work.\n";
156	if (level == HELP_SHORT) {	162	if (level == HELP_SHORT) {
157	printf("`%s' copies files and directories\n", cmdname);	163	printf("`%s' copies files and directories\n", cmdname);
158	} else {	164	} else {
159	help_cmd_cp(HELP_SHORT);	165	help_cmd_cp(HELP_SHORT);
160	printf(helpfmt, cmdname, cmdname);	166	printf(helpfmt, cmdname, cmdname);
161	}	167	}
162		168
163	return;	169	return;
164	}	170	}
165		171
166	int cmd_cp(char **argv)	172	int cmd_cp(char **argv)
167	{	173	{
168	unsigned int argc, buffer = 0, verbose = 0;	174	unsigned int argc, buffer = 0, verbose = 0;
169	int c, opt_ind;	175	int c, opt_ind;
170	int64_t ret;	176	int64_t ret;
171		177
172	argc = cli_count_args(argv);	178	argc = cli_count_args(argv);
173		179
174	for (c = 0, optind = 0, opt_ind = 0; c != -1;) {	180	for (c = 0, optind = 0, opt_ind = 0; c != -1;) {
175	c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind);	181	c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind);
176	switch (c) {	182	switch (c) {
177	case 'h':	183	case 'h':
178	help_cmd_cp(1);	184	help_cmd_cp(1);
179	return CMD_SUCCESS;	185	return CMD_SUCCESS;
180	case 'v':	186	case 'v':
181	printf("%d\n", CP_VERSION);	187	printf("%d\n", CP_VERSION);
182	return CMD_SUCCESS;	188	return CMD_SUCCESS;
183	case 'V':	189	case 'V':
184	verbose = 1;	190	verbose = 1;
185	break;	191	break;
186	case 'f':	192	case 'f':
187	break;	193	break;
188	case 'r':	194	case 'r':
189	break;	195	break;
190	case 'b':	196	case 'b':
191	if (-1 == (buffer = strtoint(optarg))) {	197	if (-1 == (buffer = strtoint(optarg))) {
192	printf("%s: Invalid buffer specification, "	198	printf("%s: Invalid buffer specification, "
193	"(should be a number greater than zero)\n",	199	"(should be a number greater than zero)\n",
194	cmdname);	200	cmdname);
195	return CMD_FAILURE;	201	return CMD_FAILURE;
196	}	202	}
197	if (verbose)	203	if (verbose)
198	printf("Buffer = %d\n", buffer);	204	printf("Buffer = %d\n", buffer);
199	break;	205	break;
200	}	206	}
201	}	207	}
202		208
203	if (buffer == 0)	209	if (buffer == 0)
204	buffer = CP_DEFAULT_BUFLEN;	210	buffer = CP_DEFAULT_BUFLEN;
205		211
206	argc -= optind;	212	argc -= optind;
207		213
208	if (argc != 2) {	214	if (argc != 2) {
209	printf("%s: invalid number of arguments. Try %s --help\n",	215	printf("%s: invalid number of arguments. Try %s --help\n",
210	cmdname, cmdname);	216	cmdname, cmdname);
211	return CMD_FAILURE;	217	return CMD_FAILURE;
212	}	218	}
213		219
214	ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose);	220	ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose);
215		221
216	if (verbose)	222	if (verbose)
217	printf("%d bytes copied\n", ret);	223	printf("%d bytes copied\n", ret);
218		224
219	if (ret >= 0)	225	if (ret >= 0)
220	return CMD_SUCCESS;	226	return CMD_SUCCESS;
221	else	227	else
222	return CMD_FAILURE;	228	return CMD_FAILURE;
223	}	229	}
224		230
225		231

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(root)/trunk/uspace/app/bdsh/cmds/modules/cp/cp.c – Rev 3651 → 3815