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 3815	Rev 3816
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 "config.h"	37	#include "config.h"
38	#include "util.h"	38	#include "util.h"
39	#include "errors.h"	39	#include "errors.h"
40	#include "entry.h"	40	#include "entry.h"
41	#include "cp.h"	41	#include "cp.h"
42	#include "cmds.h"	42	#include "cmds.h"
43		43
44	#define CP_VERSION "0.0.1"	44	#define CP_VERSION "0.0.1"
45	#define CP_DEFAULT_BUFLEN 1024	45	#define CP_DEFAULT_BUFLEN 1024
46		46
47	static const char *cmdname = "cp";	47	static const char *cmdname = "cp";
48		48
49	static struct option const long_options[] = {	49	static struct option const long_options[] = {
50	{ "buffer", required_argument, 0, 'b' },	50	{ "buffer", required_argument, 0, 'b' },
51	{ "force", no_argument, 0, 'f' },	51	{ "force", no_argument, 0, 'f' },
52	{ "recursive", no_argument, 0, 'r' },	52	{ "recursive", no_argument, 0, 'r' },
53	{ "help", no_argument, 0, 'h' },	53	{ "help", no_argument, 0, 'h' },
54	{ "version", no_argument, 0, 'v' },	54	{ "version", no_argument, 0, 'v' },
55	{ "verbose", no_argument, 0, 'V' },	55	{ "verbose", no_argument, 0, 'V' },
56	{ 0, 0, 0, 0 }	56	{ 0, 0, 0, 0 }
57	};	57	};
58		58
59	static int strtoint(const char *s1)	59	static int strtoint(const char *s1)
60	{	60	{
61	long t1;	61	long t1;
62		62
63	if (-1 == (t1 = strtol(s1, (char **) NULL, 10)))	63	if (-1 == (t1 = strtol(s1, (char **) NULL, 10)))
64	return -1;	64	return -1;
65		65
66	if (t1 <= 0)	66	if (t1 <= 0)
67	return -1;	67	return -1;
68		68
69	return (int) t1;	69	return (int) t1;
70	}	70	}
71		71
72	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,
-		73	size_t blen, int vb)
73	{	74	{
74	int fd1, fd2, bytes = 0;	75	int fd1, fd2, bytes = 0;
75	off_t total = 0;	76	off_t total = 0;
76	int64_t copied = 0;	77	int64_t copied = 0;
77	char *buff = NULL;	78	char *buff = NULL;
78		79
79	if (vb)	80	if (vb)
80	printf("Copying %s to %s\n", src, dest);	81	printf("Copying %s to %s\n", src, dest);
81		82
82	if (-1 == (fd1 = open(src, O_RDONLY))) {	83	if (-1 == (fd1 = open(src, O_RDONLY))) {
83	printf("Unable to open source file %s\n", src);	84	printf("Unable to open source file %s\n", src);
84	return -1;	85	return -1;
85	}	86	}
86		87
87	if (-1 == (fd2 = open(dest, O_CREAT))) {	88	if (-1 == (fd2 = open(dest, O_CREAT))) {
88	printf("Unable to open destination file %s\n", dest);	89	printf("Unable to open destination file %s\n", dest);
89	close(fd1);	90	close(fd1);
90	return -1;	91	return -1;
91	}	92	}
92		93
93	total = lseek(fd1, 0, SEEK_END);	94	total = lseek(fd1, 0, SEEK_END);
94		95
95	if (vb)	96	if (vb)
96	printf("%d bytes to copy\n", total);	97	printf("%d bytes to copy\n", total);
97		98
98	lseek(fd1, 0, SEEK_SET);	99	lseek(fd1, 0, SEEK_SET);
99		100
100	if (NULL == (buff = (char *) malloc(blen))) {	101	if (NULL == (buff = (char *) malloc(blen))) {
101	printf("Unable to allocate enough memory to read %s\n",	102	printf("Unable to allocate enough memory to read %s\n",
102	src);	103	src);
103	copied = -1;	104	copied = -1;
104	goto out;	105	goto out;
105	}	106	}
106		107
107	for (;;) {	108	for (;;) {
108	ssize_t res;	109	ssize_t res;
109		110
110	bytes = read(fd1, buff, blen);	111	bytes = read(fd1, buff, blen);
111	if (bytes <= 0)	112	if (bytes <= 0)
112	break;	113	break;
113	copied += bytes;	114	copied += bytes;
114	res = bytes;	115	res = bytes;
115	do {	116	do {
116	/*	117	/*
117	* Theoretically, it may not be enough to call write()	118	* Theoretically, it may not be enough to call write()
118	* only once. Also the previous read() may have	119	* only once. Also the previous read() may have
119	* returned less data than requested.	120	* returned less data than requested.
120	*/	121	*/
121	bytes = write(fd2, buff, res);	122	bytes = write(fd2, buff, res);
122	if (bytes < 0)	123	if (bytes < 0)
123	goto err;	124	goto err;
124	res -= bytes;	125	res -= bytes;
125	} while (res > 0);	126	} while (res > 0);
126		127
127	/* TODO: re-insert assert() once this is stand alone,	128	/* TODO: re-insert assert() once this is stand alone,
128	* removed as abort() exits the entire shell	129	* removed as abort() exits the entire shell
129	*/	130	*/
130	if (res != 0) {	131	if (res != 0) {
131	printf("\n%d more bytes than actually exist were copied\n", res);	132	printf("\n%d more bytes than actually exist were copied\n", res);
132	goto err;	133	goto err;
133	}	134	}
134	}	135	}
135		136
136	if (bytes < 0) {	137	if (bytes < 0) {
137	err:	138	err:
138	printf("\nError copying %s, (%d)\n", src, bytes);	139	printf("\nError copying %s, (%d)\n", src, bytes);
139	copied = bytes;	140	copied = bytes;
140	}	141	}
141		142
142	out:	143	out:
143	close(fd1);	144	close(fd1);
144	close(fd2);	145	close(fd2);
145	if (buff)	146	if (buff)
146	free(buff);	147	free(buff);
147	return copied;	148	return copied;
148	}	149	}
149		150
150	void help_cmd_cp(unsigned int level)	151	void help_cmd_cp(unsigned int level)
151	{	152	{
152	static char helpfmt[] =	153	static char helpfmt[] =
153	"Usage: %s [options] <source> <dest>\n"	154	"Usage: %s [options] <source> <dest>\n"
154	"Options: (* indicates not yet implemented)\n"	155	"Options: (* indicates not yet implemented)\n"
155	" -h, --help A short option summary\n"	156	" -h, --help A short option summary\n"
156	" -v, --version Print version information and exit\n"	157	" -v, --version Print version information and exit\n"
157	"* -V, --verbose Be annoyingly noisy about what's being done\n"	158	"* -V, --verbose Be annoyingly noisy about what's being done\n"
158	"* -f, --force Do not complain when <dest> exists\n"	159	"* -f, --force Do not complain when <dest> exists\n"
159	"* -r, --recursive Copy entire directories\n"	160	"* -r, --recursive Copy entire directories\n"
160	" -b, --buffer ## Set the read buffer size to ##\n"	161	" -b, --buffer ## Set the read buffer size to ##\n"
161	"Currently, %s is under development, some options may not work.\n";	162	"Currently, %s is under development, some options may not work.\n";
162	if (level == HELP_SHORT) {	163	if (level == HELP_SHORT) {
163	printf("`%s' copies files and directories\n", cmdname);	164	printf("`%s' copies files and directories\n", cmdname);
164	} else {	165	} else {
165	help_cmd_cp(HELP_SHORT);	166	help_cmd_cp(HELP_SHORT);
166	printf(helpfmt, cmdname, cmdname);	167	printf(helpfmt, cmdname, cmdname);
167	}	168	}
168		169
169	return;	170	return;
170	}	171	}
171		172
172	int cmd_cp(char **argv)	173	int cmd_cp(char **argv)
173	{	174	{
174	unsigned int argc, buffer = 0, verbose = 0;	175	unsigned int argc, buffer = 0, verbose = 0;
175	int c, opt_ind;	176	int c, opt_ind;
176	int64_t ret;	177	int64_t ret;
177		178
178	argc = cli_count_args(argv);	179	argc = cli_count_args(argv);
179		180
180	for (c = 0, optind = 0, opt_ind = 0; c != -1;) {	181	for (c = 0, optind = 0, opt_ind = 0; c != -1;) {
181	c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind);	182	c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind);
182	switch (c) {	183	switch (c) {
183	case 'h':	184	case 'h':
184	help_cmd_cp(1);	185	help_cmd_cp(1);
185	return CMD_SUCCESS;	186	return CMD_SUCCESS;
186	case 'v':	187	case 'v':
187	printf("%d\n", CP_VERSION);	188	printf("%d\n", CP_VERSION);
188	return CMD_SUCCESS;	189	return CMD_SUCCESS;
189	case 'V':	190	case 'V':
190	verbose = 1;	191	verbose = 1;
191	break;	192	break;
192	case 'f':	193	case 'f':
193	break;	194	break;
194	case 'r':	195	case 'r':
195	break;	196	break;
196	case 'b':	197	case 'b':
197	if (-1 == (buffer = strtoint(optarg))) {	198	if (-1 == (buffer = strtoint(optarg))) {
198	printf("%s: Invalid buffer specification, "	199	printf("%s: Invalid buffer specification, "
199	"(should be a number greater than zero)\n",	200	"(should be a number greater than zero)\n",
200	cmdname);	201	cmdname);
201	return CMD_FAILURE;	202	return CMD_FAILURE;
202	}	203	}
203	if (verbose)	204	if (verbose)
204	printf("Buffer = %d\n", buffer);	205	printf("Buffer = %d\n", buffer);
205	break;	206	break;
206	}	207	}
207	}	208	}
208		209
209	if (buffer == 0)	210	if (buffer == 0)
210	buffer = CP_DEFAULT_BUFLEN;	211	buffer = CP_DEFAULT_BUFLEN;
211		212
212	argc -= optind;	213	argc -= optind;
213		214
214	if (argc != 2) {	215	if (argc != 2) {
215	printf("%s: invalid number of arguments. Try %s --help\n",	216	printf("%s: invalid number of arguments. Try %s --help\n",
216	cmdname, cmdname);	217	cmdname, cmdname);
217	return CMD_FAILURE;	218	return CMD_FAILURE;
218	}	219	}
219		220
220	ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose);	221	ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose);
221		222
222	if (verbose)	223	if (verbose)
223	printf("%d bytes copied\n", ret);	224	printf("%d bytes copied\n", ret);
224		225
225	if (ret >= 0)	226	if (ret >= 0)
226	return CMD_SUCCESS;	227	return CMD_SUCCESS;
227	else	228	else
228	return CMD_FAILURE;	229	return CMD_FAILURE;
229	}	230	}
230		231
231		232

Subversion Repositories HelenOS

(root)/trunk/uspace/app/bdsh/cmds/modules/cp/cp.c – Rev 3815 → 3816