root / prex-0.9.0 / usr / bin / cp / cp.c @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 1988, 1993, 1994
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3 | * The Regents of the University of California. All rights reserved.
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4 | *
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5 | * This code is derived from software contributed to Berkeley by
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6 | * David Hitz of Auspex Systems Inc.
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7 | *
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8 | * Redistribution and use in source and binary forms, with or without
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9 | * modification, are permitted provided that the following conditions
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10 | * are met:
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11 | * 1. Redistributions of source code must retain the above copyright
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12 | * notice, this list of conditions and the following disclaimer.
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13 | * 2. Redistributions in binary form must reproduce the above copyright
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14 | * notice, this list of conditions and the following disclaimer in the
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15 | * documentation and/or other materials provided with the distribution.
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16 | * 3. Neither the name of the University nor the names of its contributors
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17 | * may be used to endorse or promote products derived from this software
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18 | * without specific prior written permission.
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19 | *
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20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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30 | * SUCH DAMAGE.
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31 | */
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32 | |||
33 | /* modified by Kohsuke Ohtani for Prex. */
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34 | |||
35 | #include <sys/stat.h> |
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36 | #include <sys/fcntl.h> |
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37 | |||
38 | #include <unistd.h> |
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39 | #include <err.h> |
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40 | #include <string.h> |
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41 | #include <stdlib.h> |
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42 | #include <errno.h> |
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43 | #include <limits.h> |
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44 | #include <stdio.h> |
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45 | |||
46 | #ifdef CMDBOX
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47 | #define main(argc, argv) cp_main(argc, argv)
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48 | #endif
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49 | |||
50 | static void usage(void); |
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51 | static int copy(char *from, char *to, int dirflag); |
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52 | |||
53 | |||
54 | static char *iobuf; |
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55 | |||
56 | int
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57 | main(int argc, char *argv[]) |
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58 | { |
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59 | int r, ch, checkch, i, iflag = 0; |
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60 | char *target;
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61 | struct stat to_stat, tmp_stat;
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62 | |||
63 | while ((ch = getopt(argc, argv, "")) != -1) |
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64 | switch(ch) {
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65 | case '?': |
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66 | default:
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67 | usage(); |
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68 | } |
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69 | argc -= optind; |
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70 | argv += optind; |
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71 | |||
72 | if (argc < 2) |
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73 | usage(); |
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74 | |||
75 | if ((iobuf = malloc(BUFSIZ)) == NULL) |
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76 | err(1, NULL); |
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77 | |||
78 | target = argv[--argc]; |
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79 | |||
80 | r = stat(target, &to_stat); |
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81 | if (r == -1 && errno != ENOENT) |
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82 | err(1, "%s", target); |
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83 | if (r == -1 || !S_ISDIR(to_stat.st_mode)) { |
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84 | /*
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85 | * File to file
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86 | */
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87 | if (argc > 1) |
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88 | usage(); |
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89 | |||
90 | if (stat(argv[0], &tmp_stat) == -1) { |
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91 | warn("%s", argv[0]); |
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92 | exit(1);
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93 | } |
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94 | if (!S_ISREG(tmp_stat.st_mode))
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95 | usage(); |
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96 | |||
97 | /* interactive mode */
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98 | if (r != -1 && iflag) { |
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99 | (void)fprintf(stderr, "overwrite %s? ", target); |
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100 | checkch = ch = getchar(); |
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101 | while (ch != '\n' && ch != EOF) |
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102 | ch = getchar(); |
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103 | if (checkch != 'y') |
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104 | exit(0);
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105 | } |
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106 | r = copy(argv[0], target, 0); |
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107 | } else {
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108 | /*
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109 | * File(s) to directory
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110 | */
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111 | r = 0;
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112 | for (i = 0; i < argc; i++) |
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113 | r = copy(argv[i], target, 1);
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114 | } |
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115 | free(iobuf); |
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116 | exit(r); |
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117 | } |
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118 | |||
119 | static void |
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120 | usage(void)
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121 | { |
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122 | fprintf(stderr, "usage: cp src target\n"
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123 | " cp src1 ... srcN directory\n");
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124 | exit(1);
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125 | /* NOTREACHED */
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126 | } |
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127 | |||
128 | static int |
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129 | copy(char *from, char *to, int dirflag) |
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130 | { |
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131 | char path[PATH_MAX];
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132 | int fold, fnew, n;
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133 | struct stat stbuf;
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134 | mode_t mode; |
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135 | char *p;
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136 | |||
137 | if (dirflag) {
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138 | p = strrchr(from, '/');
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139 | p = p ? p + 1 : from;
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140 | strlcpy(path, to, sizeof(path));
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141 | if (strcmp(to, "/")) |
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142 | strlcat(path, "/", sizeof(path)); |
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143 | strlcat(path, p, sizeof(path));
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144 | to = path; |
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145 | } |
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146 | |||
147 | if ((fold = open(from, O_RDONLY)) == -1) { |
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148 | warn("%s", from);
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149 | return 1; |
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150 | } |
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151 | fstat(fold, &stbuf); |
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152 | mode = stbuf.st_mode; |
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153 | |||
154 | if ((fnew = creat(to, mode)) == -1) { |
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155 | warn("%s", to);
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156 | close(fold); |
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157 | return 1; |
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158 | } |
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159 | while ((n = read(fold, iobuf, BUFSIZ)) > 0) { |
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160 | if (write(fnew, iobuf, (size_t)n) != n) {
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161 | warn("%s", to);
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162 | close(fold); |
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163 | close(fnew); |
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164 | return 1; |
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165 | } |
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166 | } |
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167 | close(fold); |
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168 | close(fnew); |
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169 | return 0; |
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170 | } |