1: /*************************************************************************
2: * (C) 2014 AITNET - Sofia/Bulgaria - <office@aitbg.com>
3: * by Michael Pounov <misho@aitbg.com>
4: *
5: * $Author: misho $
6: * $Id: imgupd.c,v 1.3 2014/02/05 22:00:29 misho Exp $
7: *
8: *************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2014
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
49: char imgName[PATH_MAX], imgFile[PATH_MAX];
50: off_t imgSize, iSize;
51: int Verbose;
52: extern char compiled[], compiledby[], compilehost[];
53:
54: static void
55: Usage()
56: {
57:
58: printf( "IMGUPD is tool for management of images\n"
59: "=== %s === %s@%s ===\n\n"
60: " Syntax: imgupd [options] [image_file]\n\n"
61: "\t-v\t\tVerbose ...\n"
62: "\t-g\t\tGet image from Storage\n"
63: "\t-t\t\tTruncate Storage file name\n"
64: "\t-s <size>\tStorage size (required for stdin)\n"
65: "\t-f <devfile>\tStorage file name\n"
66: "\n", compiled, compiledby, compilehost);
67: }
68:
69: static int
70: EmptyStore(int img)
71: {
72: register int i;
73: u_char buf[IMGBUF_SIZE];
74: ssize_t wlen;
75:
76: VERB(1) printf("Erase store %s\n", imgName);
77:
78: iSize = lseek(img, 0, SEEK_END);
79: if (iSize == -1) {
80: ESYSERR(0);
81: return -1;
82: } else
83: imgSize += E_ALIGN(iSize, IMGBUF_SIZE);
84:
85: memset(buf, 0, sizeof buf);
86: for (i = howmany(iSize, IMGBUF_SIZE); i < howmany(imgSize, IMGBUF_SIZE); i++)
87: if ((wlen = write(img, buf, sizeof buf)) == -1 ||
88: wlen != sizeof buf) {
89: EERROR(EIO, "Error at chunk %d init %d bytes, should be %u\n",
90: i, wlen, sizeof buf);
91: return -1;
92: } else
93: VERB(1) printf("+Written chunk #%d\n", i);
94:
95: iSize = lseek(img, iSize, SEEK_SET);
96: return iSize;
97: }
98:
99: static int
100: FillStore(int img, int fd)
101: {
102: register int i, j;
103: u_char buf[IMGBUF_SIZE];
104: ssize_t rlen, wlen;
105:
106: VERB(1) printf("Fill store %s from image file %s\n", imgName, imgFile);
107:
108: for (j = 0, i = howmany(iSize, IMGBUF_SIZE); i < howmany(imgSize, IMGBUF_SIZE);
109: i++, j++) {
110: memset(buf, 0, sizeof buf);
111: rlen = read(fd, buf, sizeof buf);
112: if (rlen == -1) {
113: ESYSERR(0);
114: return -1;
115: } else if (!rlen)
116: break;
117: else
118: VERB(1) printf("+Readed %d bytes for chunk #%d\n", rlen, j);
119:
120: wlen = write(img, buf, rlen);
121: if (wlen == -1) {
122: ESYSERR(0);
123: return -1;
124: } else if (!wlen || wlen != rlen) {
125: EERROR(EIO, "Readed %d bytes are not equal to written %d bytes\n",
126: rlen, wlen);
127: } else
128: VERB(1) printf("+Written %d bytes at chunk #%d\n", wlen, i);
129: }
130:
131: return 0;
132: }
133:
134: int
135: main(int argc, char **argv)
136: {
137: char ch, m = 0;
138: int fd, img, tr = 0;
139:
140: while ((ch = getopt(argc, argv, "hvgts:f:")) != -1)
141: switch (ch) {
142: case 'f':
143: strlcpy(imgName, optarg, sizeof imgName);
144: break;
145: case 's':
146: imgSize = strtoll(optarg, NULL, 0);
147: if (!imgSize) {
148: Usage();
149: return 1;
150: }
151: break;
152: case 't':
153: tr = O_TRUNC;
154: break;
155: case 'g':
156: m = 1;
157: break;
158: case 'v':
159: Verbose++;
160: break;
161: case 'h':
162: default:
163: Usage();
164: return 1;
165: }
166: argc -= optind;
167: argv += optind;
168:
169: if (!m) {
170: if (argc) {
171: strlcpy(imgFile, *argv, sizeof imgFile);
172: /* open image file */
173: fd = open(imgFile, O_RDONLY);
174: if (fd == -1) {
175: ESYSERR(0);
176: return 2;
177: } else
178: iSize = lseek(fd, 0, SEEK_END);
179: if (!imgSize)
180: imgSize = E_ALIGN(iSize, IMGBUF_SIZE);
181: if (iSize == -1 || iSize > imgSize) {
182: close(fd);
183: EERROR(ENOSPC, "Error:: file size %llu is "
184: "greater from storage size %llu\n",
185: iSize, imgSize);
186: return 2;
187: } else
188: lseek(fd, 0, SEEK_SET);
189: } else if (!imgSize) {
190: Usage();
191: return 1;
192: } else
193: fd = STDIN_FILENO;
194: } else { /* GET */
195: if (argc) {
196: strlcpy(imgFile, *argv, sizeof imgFile);
197: /* open image file */
198: fd = open(imgFile, O_WRONLY | O_TRUNC | O_CREAT, 0644);
199: if (fd == -1) {
200: ESYSERR(0);
201: return 2;
202: }
203: } else if (!imgSize) {
204: Usage();
205: return 1;
206: } else
207: fd = STDOUT_FILENO;
208: }
209:
210: VERB(1) printf("imgSize=%llu imgName=%s imgFile=%s\n",
211: imgSize, imgName, argc ? imgFile : "<stdin>");
212:
213: if (!m) {
214: /* open storage device */
215: img = open(imgName, O_RDWR | O_CREAT | tr, 0644);
216: if (img == -1) {
217: ESYSERR(0);
218: if (fd > 2)
219: close(fd);
220: return 3;
221: }
222: } else { /* GET */
223: /* open storage device */
224: img = open(imgName, O_RDONLY);
225: if (img == -1) {
226: ESYSERR(0);
227: if (fd > 2)
228: close(fd);
229: return 3;
230: } else
231: iSize = lseek(img, 0, SEEK_END);
232: if (!imgSize)
233: imgSize = E_ALIGN(iSize, IMGBUF_SIZE);
234: if (iSize == -1 || iSize > imgSize) {
235: if (fd > 2)
236: close(fd);
237: close(img);
238: EERROR(ENOSPC, "Error:: storage size %llu is "
239: "greater from file size %llu\n",
240: iSize, imgSize);
241: return 3;
242: } else
243: lseek(img, 0, SEEK_SET);
244: }
245:
246: if (!m) {
247: if (EmptyStore(img) == -1) {
248: if (fd > 2)
249: close(fd);
250: close(img);
251: return 3;
252: }
253: if (FillStore(img, fd) == -1) {
254: if (fd > 2)
255: close(fd);
256: close(img);
257: return 4;
258: }
259: } else { /* GET */
260: if (EmptyStore(fd) == -1) {
261: if (fd > 2)
262: close(fd);
263: close(img);
264: return 3;
265: }
266: if (FillStore(fd, img) == -1) {
267: if (fd > 2)
268: close(fd);
269: close(img);
270: return 4;
271: }
272: }
273:
274: close(img);
275: if (fd > 2)
276: close(fd);
277: return 0;
278: }
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