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