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update uml readme with working cmdline example
[openwrt.git] / tools / mkimage / src / mkimage.c
1 /*
2 * (C) Copyright 2000-2004
3 * DENX Software Engineering
4 * Wolfgang Denk, wd@denx.de
5 * All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22 #ifdef __APPLE__
23 #define __FreeBSD__ 10
24 #endif
25
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #ifndef __WIN32__
32 #include <netinet/in.h> /* for host / network byte order conversions */
33 #endif
34 #include <sys/mman.h>
35 #include <sys/stat.h>
36 #include <time.h>
37 #include <unistd.h>
38
39 #if defined(__BEOS__) || defined(__NetBSD__) || defined(__APPLE__)
40 #include <inttypes.h>
41 #include <sys/types.h>
42 #endif
43 #ifdef __WIN32__
44 typedef unsigned int __u32;
45
46 #define SWAP_LONG(x) \
47 ((__u32)( \
48 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
49 (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
50 (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
51 (((__u32)(x) & (__u32)0xff000000UL) >> 24) ))
52 typedef unsigned char uint8_t;
53 typedef unsigned short uint16_t;
54 typedef unsigned int uint32_t;
55
56 #define ntohl(a) SWAP_LONG(a)
57 #define htonl(a) SWAP_LONG(a)
58 #endif /* __WIN32__ */
59
60 #ifndef O_BINARY /* should be define'd on __WIN32__ */
61 #define O_BINARY 0
62 #endif
63
64 #include "image.h"
65
66 extern int errno;
67
68 #ifndef MAP_FAILED
69 #define MAP_FAILED (-1)
70 #endif
71
72 char *cmdname;
73
74 extern unsigned long crc32 (unsigned long crc, const char *buf, unsigned int len);
75
76 typedef struct table_entry {
77 int val; /* as defined in image.h */
78 char *sname; /* short (input) name */
79 char *lname; /* long (output) name */
80 } table_entry_t;
81
82 table_entry_t arch_name[] = {
83 { IH_CPU_INVALID, NULL, "Invalid CPU", },
84 { IH_CPU_ALPHA, "alpha", "Alpha", },
85 { IH_CPU_ARM, "arm", "ARM", },
86 { IH_CPU_I386, "x86", "Intel x86", },
87 { IH_CPU_IA64, "ia64", "IA64", },
88 { IH_CPU_M68K, "m68k", "MC68000", },
89 { IH_CPU_MICROBLAZE, "microblaze", "MicroBlaze", },
90 { IH_CPU_MIPS, "mips", "MIPS", },
91 { IH_CPU_MIPS64, "mips64", "MIPS 64 Bit", },
92 { IH_CPU_NIOS, "nios", "NIOS", },
93 { IH_CPU_NIOS2, "nios2", "NIOS II", },
94 { IH_CPU_PPC, "ppc", "PowerPC", },
95 { IH_CPU_S390, "s390", "IBM S390", },
96 { IH_CPU_SH, "sh", "SuperH", },
97 { IH_CPU_SPARC, "sparc", "SPARC", },
98 { IH_CPU_SPARC64, "sparc64", "SPARC 64 Bit", },
99 { IH_CPU_BLACKFIN, "blackfin", "Blackfin", },
100 { IH_CPU_AVR32, "avr32", "AVR32", },
101 { -1, "", "", },
102 };
103
104 table_entry_t os_name[] = {
105 { IH_OS_INVALID, NULL, "Invalid OS", },
106 { IH_OS_4_4BSD, "4_4bsd", "4_4BSD", },
107 { IH_OS_ARTOS, "artos", "ARTOS", },
108 { IH_OS_DELL, "dell", "Dell", },
109 { IH_OS_ESIX, "esix", "Esix", },
110 { IH_OS_FREEBSD, "freebsd", "FreeBSD", },
111 { IH_OS_IRIX, "irix", "Irix", },
112 { IH_OS_LINUX, "linux", "Linux", },
113 { IH_OS_LYNXOS, "lynxos", "LynxOS", },
114 { IH_OS_NCR, "ncr", "NCR", },
115 { IH_OS_NETBSD, "netbsd", "NetBSD", },
116 { IH_OS_OPENBSD, "openbsd", "OpenBSD", },
117 { IH_OS_PSOS, "psos", "pSOS", },
118 { IH_OS_QNX, "qnx", "QNX", },
119 { IH_OS_RTEMS, "rtems", "RTEMS", },
120 { IH_OS_SCO, "sco", "SCO", },
121 { IH_OS_SOLARIS, "solaris", "Solaris", },
122 { IH_OS_SVR4, "svr4", "SVR4", },
123 { IH_OS_U_BOOT, "u-boot", "U-Boot", },
124 { IH_OS_VXWORKS, "vxworks", "VxWorks", },
125 { -1, "", "", },
126 };
127
128 table_entry_t type_name[] = {
129 { IH_TYPE_INVALID, NULL, "Invalid Image", },
130 { IH_TYPE_FILESYSTEM, "filesystem", "Filesystem Image", },
131 { IH_TYPE_FIRMWARE, "firmware", "Firmware", },
132 { IH_TYPE_KERNEL, "kernel", "Kernel Image", },
133 { IH_TYPE_MULTI, "multi", "Multi-File Image", },
134 { IH_TYPE_RAMDISK, "ramdisk", "RAMDisk Image", },
135 { IH_TYPE_SCRIPT, "script", "Script", },
136 { IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
137 { IH_TYPE_FLATDT, "flat_dt", "Flat Device Tree", },
138 { -1, "", "", },
139 };
140
141 table_entry_t comp_name[] = {
142 { IH_COMP_NONE, "none", "uncompressed", },
143 { IH_COMP_BZIP2, "bzip2", "bzip2 compressed", },
144 { IH_COMP_GZIP, "gzip", "gzip compressed", },
145 { IH_COMP_LZMA, "lzma", "lzma compressed", },
146 { -1, "", "", },
147 };
148
149 static void copy_file (int, const char *, int);
150 static void usage (void);
151 static void print_header (image_header_t *);
152 static void print_type (image_header_t *);
153 static char *put_table_entry (table_entry_t *, char *, int);
154 static char *put_arch (int);
155 static char *put_type (int);
156 static char *put_os (int);
157 static char *put_comp (int);
158 static int get_table_entry (table_entry_t *, char *, char *);
159 static int get_arch(char *);
160 static int get_comp(char *);
161 static int get_os (char *);
162 static int get_type(char *);
163
164
165 char *datafile;
166 char *imagefile;
167
168 int dflag = 0;
169 int eflag = 0;
170 int lflag = 0;
171 int vflag = 0;
172 int xflag = 0;
173 int opt_os = IH_OS_LINUX;
174 int opt_arch = IH_CPU_PPC;
175 int opt_type = IH_TYPE_KERNEL;
176 int opt_comp = IH_COMP_GZIP;
177
178 image_header_t header;
179 image_header_t *hdr = &header;
180
181 int
182 main (int argc, char **argv)
183 {
184 int ifd;
185 uint32_t checksum;
186 uint32_t addr;
187 uint32_t ep;
188 struct stat sbuf;
189 unsigned char *ptr;
190 char *name = "";
191
192 cmdname = *argv;
193
194 addr = ep = 0;
195
196 while (--argc > 0 && **++argv == '-') {
197 while (*++*argv) {
198 switch (**argv) {
199 case 'l':
200 lflag = 1;
201 break;
202 case 'A':
203 if ((--argc <= 0) ||
204 (opt_arch = get_arch(*++argv)) < 0)
205 usage ();
206 goto NXTARG;
207 case 'C':
208 if ((--argc <= 0) ||
209 (opt_comp = get_comp(*++argv)) < 0)
210 usage ();
211 goto NXTARG;
212 case 'O':
213 if ((--argc <= 0) ||
214 (opt_os = get_os(*++argv)) < 0)
215 usage ();
216 goto NXTARG;
217 case 'T':
218 if ((--argc <= 0) ||
219 (opt_type = get_type(*++argv)) < 0)
220 usage ();
221 goto NXTARG;
222
223 case 'a':
224 if (--argc <= 0)
225 usage ();
226 addr = strtoul (*++argv, (char **)&ptr, 16);
227 if (*ptr) {
228 fprintf (stderr,
229 "%s: invalid load address %s\n",
230 cmdname, *argv);
231 exit (EXIT_FAILURE);
232 }
233 goto NXTARG;
234 case 'd':
235 if (--argc <= 0)
236 usage ();
237 datafile = *++argv;
238 dflag = 1;
239 goto NXTARG;
240 case 'e':
241 if (--argc <= 0)
242 usage ();
243 ep = strtoul (*++argv, (char **)&ptr, 16);
244 if (*ptr) {
245 fprintf (stderr,
246 "%s: invalid entry point %s\n",
247 cmdname, *argv);
248 exit (EXIT_FAILURE);
249 }
250 eflag = 1;
251 goto NXTARG;
252 case 'n':
253 if (--argc <= 0)
254 usage ();
255 name = *++argv;
256 goto NXTARG;
257 case 'v':
258 vflag++;
259 break;
260 case 'x':
261 xflag++;
262 break;
263 default:
264 usage ();
265 }
266 }
267 NXTARG: ;
268 }
269
270 if ((argc != 1) || ((lflag ^ dflag) == 0))
271 usage();
272
273 if (!eflag) {
274 ep = addr;
275 /* If XIP, entry point must be after the U-Boot header */
276 if (xflag)
277 ep += sizeof(image_header_t);
278 }
279
280 /*
281 * If XIP, ensure the entry point is equal to the load address plus
282 * the size of the U-Boot header.
283 */
284 if (xflag) {
285 if (ep != addr + sizeof(image_header_t)) {
286 fprintf (stderr,
287 "%s: For XIP, the entry point must be the load addr + %lu\n",
288 cmdname,
289 (unsigned long)sizeof(image_header_t));
290 exit (EXIT_FAILURE);
291 }
292 }
293
294 imagefile = *argv;
295
296 if (lflag) {
297 ifd = open(imagefile, O_RDONLY|O_BINARY);
298 } else {
299 ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
300 }
301
302 if (ifd < 0) {
303 fprintf (stderr, "%s: Can't open %s: %s\n",
304 cmdname, imagefile, strerror(errno));
305 exit (EXIT_FAILURE);
306 }
307
308 if (lflag) {
309 int len;
310 char *data;
311 /*
312 * list header information of existing image
313 */
314 if (fstat(ifd, &sbuf) < 0) {
315 fprintf (stderr, "%s: Can't stat %s: %s\n",
316 cmdname, imagefile, strerror(errno));
317 exit (EXIT_FAILURE);
318 }
319
320 if ((unsigned)sbuf.st_size < sizeof(image_header_t)) {
321 fprintf (stderr,
322 "%s: Bad size: \"%s\" is no valid image\n",
323 cmdname, imagefile);
324 exit (EXIT_FAILURE);
325 }
326
327 ptr = (unsigned char *)mmap(0, sbuf.st_size,
328 PROT_READ, MAP_SHARED, ifd, 0);
329 if ((caddr_t)ptr == (caddr_t)-1) {
330 fprintf (stderr, "%s: Can't read %s: %s\n",
331 cmdname, imagefile, strerror(errno));
332 exit (EXIT_FAILURE);
333 }
334
335 /*
336 * create copy of header so that we can blank out the
337 * checksum field for checking - this can't be done
338 * on the PROT_READ mapped data.
339 */
340 memcpy (hdr, ptr, sizeof(image_header_t));
341
342 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
343 fprintf (stderr,
344 "%s: Bad Magic Number: \"%s\" is no valid image\n",
345 cmdname, imagefile);
346 exit (EXIT_FAILURE);
347 }
348
349 data = (char *)hdr;
350 len = sizeof(image_header_t);
351
352 checksum = ntohl(hdr->ih_hcrc);
353 hdr->ih_hcrc = htonl(0); /* clear for re-calculation */
354
355 if (crc32 (0, data, len) != checksum) {
356 fprintf (stderr,
357 "%s: ERROR: \"%s\" has bad header checksum!\n",
358 cmdname, imagefile);
359 exit (EXIT_FAILURE);
360 }
361
362 data = (char *)(ptr + sizeof(image_header_t));
363 len = sbuf.st_size - sizeof(image_header_t) ;
364
365 if (crc32 (0, data, len) != ntohl(hdr->ih_dcrc)) {
366 fprintf (stderr,
367 "%s: ERROR: \"%s\" has corrupted data!\n",
368 cmdname, imagefile);
369 exit (EXIT_FAILURE);
370 }
371
372 /* for multi-file images we need the data part, too */
373 print_header ((image_header_t *)ptr);
374
375 (void) munmap((void *)ptr, sbuf.st_size);
376 (void) close (ifd);
377
378 exit (EXIT_SUCCESS);
379 }
380
381 /*
382 * Must be -w then:
383 *
384 * write dummy header, to be fixed later
385 */
386 memset (hdr, 0, sizeof(image_header_t));
387
388 if (write(ifd, hdr, sizeof(image_header_t)) != sizeof(image_header_t)) {
389 fprintf (stderr, "%s: Write error on %s: %s\n",
390 cmdname, imagefile, strerror(errno));
391 exit (EXIT_FAILURE);
392 }
393
394 if (opt_type == IH_TYPE_MULTI || opt_type == IH_TYPE_SCRIPT) {
395 char *file = datafile;
396 uint32_t size;
397
398 for (;;) {
399 char *sep = NULL;
400
401 if (file) {
402 if ((sep = strchr(file, ':')) != NULL) {
403 *sep = '\0';
404 }
405
406 if (stat (file, &sbuf) < 0) {
407 fprintf (stderr, "%s: Can't stat %s: %s\n",
408 cmdname, file, strerror(errno));
409 exit (EXIT_FAILURE);
410 }
411 size = htonl(sbuf.st_size);
412 } else {
413 size = 0;
414 }
415
416 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
417 fprintf (stderr, "%s: Write error on %s: %s\n",
418 cmdname, imagefile, strerror(errno));
419 exit (EXIT_FAILURE);
420 }
421
422 if (!file) {
423 break;
424 }
425
426 if (sep) {
427 *sep = ':';
428 file = sep + 1;
429 } else {
430 file = NULL;
431 }
432 }
433
434 file = datafile;
435
436 for (;;) {
437 char *sep = strchr(file, ':');
438 if (sep) {
439 *sep = '\0';
440 copy_file (ifd, file, 1);
441 *sep++ = ':';
442 file = sep;
443 } else {
444 copy_file (ifd, file, 0);
445 break;
446 }
447 }
448 } else {
449 copy_file (ifd, datafile, 0);
450 }
451
452 /* We're a bit of paranoid */
453 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
454 (void) fdatasync (ifd);
455 #else
456 (void) fsync (ifd);
457 #endif
458
459 if (fstat(ifd, &sbuf) < 0) {
460 fprintf (stderr, "%s: Can't stat %s: %s\n",
461 cmdname, imagefile, strerror(errno));
462 exit (EXIT_FAILURE);
463 }
464
465 ptr = (unsigned char *)mmap(0, sbuf.st_size,
466 PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
467 if (ptr == (unsigned char *)MAP_FAILED) {
468 fprintf (stderr, "%s: Can't map %s: %s\n",
469 cmdname, imagefile, strerror(errno));
470 exit (EXIT_FAILURE);
471 }
472
473 hdr = (image_header_t *)ptr;
474
475 checksum = crc32 (0,
476 (const char *)(ptr + sizeof(image_header_t)),
477 sbuf.st_size - sizeof(image_header_t)
478 );
479
480 /* Build new header */
481 hdr->ih_magic = htonl(IH_MAGIC);
482 hdr->ih_time = htonl(sbuf.st_mtime);
483 hdr->ih_size = htonl(sbuf.st_size - sizeof(image_header_t));
484 hdr->ih_load = htonl(addr);
485 hdr->ih_ep = htonl(ep);
486 hdr->ih_dcrc = htonl(checksum);
487 hdr->ih_os = opt_os;
488 hdr->ih_arch = opt_arch;
489 hdr->ih_type = opt_type;
490 hdr->ih_comp = opt_comp;
491
492 strncpy((char *)hdr->ih_name, name, IH_NMLEN);
493
494 checksum = crc32(0,(const char *)hdr,sizeof(image_header_t));
495
496 hdr->ih_hcrc = htonl(checksum);
497
498 print_header (hdr);
499
500 (void) munmap((void *)ptr, sbuf.st_size);
501
502 /* We're a bit of paranoid */
503 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
504 (void) fdatasync (ifd);
505 #else
506 (void) fsync (ifd);
507 #endif
508
509 if (close(ifd)) {
510 fprintf (stderr, "%s: Write error on %s: %s\n",
511 cmdname, imagefile, strerror(errno));
512 exit (EXIT_FAILURE);
513 }
514
515 exit (EXIT_SUCCESS);
516 }
517
518 static void
519 copy_file (int ifd, const char *datafile, int pad)
520 {
521 int dfd;
522 struct stat sbuf;
523 unsigned char *ptr;
524 int tail;
525 int zero = 0;
526 int offset = 0;
527 int size;
528
529 if (vflag) {
530 fprintf (stderr, "Adding Image %s\n", datafile);
531 }
532
533 if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
534 fprintf (stderr, "%s: Can't open %s: %s\n",
535 cmdname, datafile, strerror(errno));
536 exit (EXIT_FAILURE);
537 }
538
539 if (fstat(dfd, &sbuf) < 0) {
540 fprintf (stderr, "%s: Can't stat %s: %s\n",
541 cmdname, datafile, strerror(errno));
542 exit (EXIT_FAILURE);
543 }
544
545 ptr = (unsigned char *)mmap(0, sbuf.st_size,
546 PROT_READ, MAP_SHARED, dfd, 0);
547 if (ptr == (unsigned char *)MAP_FAILED) {
548 fprintf (stderr, "%s: Can't read %s: %s\n",
549 cmdname, datafile, strerror(errno));
550 exit (EXIT_FAILURE);
551 }
552
553 if (xflag) {
554 unsigned char *p = NULL;
555 /*
556 * XIP: do not append the image_header_t at the
557 * beginning of the file, but consume the space
558 * reserved for it.
559 */
560
561 if ((unsigned)sbuf.st_size < sizeof(image_header_t)) {
562 fprintf (stderr,
563 "%s: Bad size: \"%s\" is too small for XIP\n",
564 cmdname, datafile);
565 exit (EXIT_FAILURE);
566 }
567
568 for (p=ptr; p < ptr+sizeof(image_header_t); p++) {
569 if ( *p != 0xff ) {
570 fprintf (stderr,
571 "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
572 cmdname, datafile);
573 exit (EXIT_FAILURE);
574 }
575 }
576
577 offset = sizeof(image_header_t);
578 }
579
580 size = sbuf.st_size - offset;
581 if (write(ifd, ptr + offset, size) != size) {
582 fprintf (stderr, "%s: Write error on %s: %s\n",
583 cmdname, imagefile, strerror(errno));
584 exit (EXIT_FAILURE);
585 }
586
587 if (pad && ((tail = size % 4) != 0)) {
588
589 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
590 fprintf (stderr, "%s: Write error on %s: %s\n",
591 cmdname, imagefile, strerror(errno));
592 exit (EXIT_FAILURE);
593 }
594 }
595
596 (void) munmap((void *)ptr, sbuf.st_size);
597 (void) close (dfd);
598 }
599
600 void
601 usage ()
602 {
603 fprintf (stderr, "Usage: %s -l image\n"
604 " -l ==> list image header information\n"
605 " %s [-x] -A arch -O os -T type -C comp "
606 "-a addr -e ep -n name -d data_file[:data_file...] image\n",
607 cmdname, cmdname);
608 fprintf (stderr, " -A ==> set architecture to 'arch'\n"
609 " -O ==> set operating system to 'os'\n"
610 " -T ==> set image type to 'type'\n"
611 " -C ==> set compression type 'comp'\n"
612 " -a ==> set load address to 'addr' (hex)\n"
613 " -e ==> set entry point to 'ep' (hex)\n"
614 " -n ==> set image name to 'name'\n"
615 " -d ==> use image data from 'datafile'\n"
616 " -x ==> set XIP (execute in place)\n"
617 );
618 exit (EXIT_FAILURE);
619 }
620
621 static void
622 print_header (image_header_t *hdr)
623 {
624 time_t timestamp;
625 uint32_t size;
626
627 timestamp = (time_t)ntohl(hdr->ih_time);
628 size = ntohl(hdr->ih_size);
629
630 printf ("Image Name: %.*s\n", IH_NMLEN, hdr->ih_name);
631 printf ("Created: %s", ctime(&timestamp));
632 printf ("Image Type: "); print_type(hdr);
633 printf ("Data Size: %d Bytes = %.2f kB = %.2f MB\n",
634 size, (double)size / 1.024e3, (double)size / 1.048576e6 );
635 printf ("Load Address: 0x%08X\n", ntohl(hdr->ih_load));
636 printf ("Entry Point: 0x%08X\n", ntohl(hdr->ih_ep));
637
638 if (hdr->ih_type == IH_TYPE_MULTI || hdr->ih_type == IH_TYPE_SCRIPT) {
639 int i, ptrs;
640 uint32_t pos;
641 uint32_t *len_ptr = (uint32_t *) (
642 (unsigned long)hdr + sizeof(image_header_t)
643 );
644
645 /* determine number of images first (to calculate image offsets) */
646 for (i=0; len_ptr[i]; ++i) /* null pointer terminates list */
647 ;
648 ptrs = i; /* null pointer terminates list */
649
650 pos = sizeof(image_header_t) + ptrs * sizeof(long);
651 printf ("Contents:\n");
652 for (i=0; len_ptr[i]; ++i) {
653 size = ntohl(len_ptr[i]);
654
655 printf (" Image %d: %8d Bytes = %4d kB = %d MB\n",
656 i, size, size>>10, size>>20);
657 if (hdr->ih_type == IH_TYPE_SCRIPT && i > 0) {
658 /*
659 * the user may need to know offsets
660 * if planning to do something with
661 * multiple files
662 */
663 printf (" Offset = %08X\n", pos);
664 }
665 /* copy_file() will pad the first files to even word align */
666 size += 3;
667 size &= ~3;
668 pos += size;
669 }
670 }
671 }
672
673
674 static void
675 print_type (image_header_t *hdr)
676 {
677 printf ("%s %s %s (%s)\n",
678 put_arch (hdr->ih_arch),
679 put_os (hdr->ih_os ),
680 put_type (hdr->ih_type),
681 put_comp (hdr->ih_comp)
682 );
683 }
684
685 static char *put_arch (int arch)
686 {
687 return (put_table_entry(arch_name, "Unknown Architecture", arch));
688 }
689
690 static char *put_os (int os)
691 {
692 return (put_table_entry(os_name, "Unknown OS", os));
693 }
694
695 static char *put_type (int type)
696 {
697 return (put_table_entry(type_name, "Unknown Image", type));
698 }
699
700 static char *put_comp (int comp)
701 {
702 return (put_table_entry(comp_name, "Unknown Compression", comp));
703 }
704
705 static char *put_table_entry (table_entry_t *table, char *msg, int type)
706 {
707 for (; table->val>=0; ++table) {
708 if (table->val == type)
709 return (table->lname);
710 }
711 return (msg);
712 }
713
714 static int get_arch(char *name)
715 {
716 return (get_table_entry(arch_name, "CPU", name));
717 }
718
719
720 static int get_comp(char *name)
721 {
722 return (get_table_entry(comp_name, "Compression", name));
723 }
724
725
726 static int get_os (char *name)
727 {
728 return (get_table_entry(os_name, "OS", name));
729 }
730
731
732 static int get_type(char *name)
733 {
734 return (get_table_entry(type_name, "Image", name));
735 }
736
737 static int get_table_entry (table_entry_t *table, char *msg, char *name)
738 {
739 table_entry_t *t;
740 int first = 1;
741
742 for (t=table; t->val>=0; ++t) {
743 if (t->sname && strcasecmp(t->sname, name)==0)
744 return (t->val);
745 }
746 fprintf (stderr, "\nInvalid %s Type - valid names are", msg);
747 for (t=table; t->val>=0; ++t) {
748 if (t->sname == NULL)
749 continue;
750 fprintf (stderr, "%c %s", (first) ? ':' : ',', t->sname);
751 first = 0;
752 }
753 fprintf (stderr, "\n");
754 return (-1);
755 }
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