]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - tools/dumpimage.c
4 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
6 * SPDX-License-Identifier: GPL-2.0+
13 static void usage(void);
15 /* image_type_params linked list to maintain registered image types supports */
16 static struct image_type_params
*dumpimage_tparams
;
18 /* parameters initialized by core will be used by the image type code */
19 static struct image_tool_params params
= {
20 .type
= IH_TYPE_KERNEL
,
24 * dumpimage_register() - register respective image generation/list support
26 * the input struct image_type_params is checked and appended to the link
27 * list, if the input structure is already registered, issue an error
29 * @tparams: Image type parameters
31 static void dumpimage_register(struct image_type_params
*tparams
)
33 struct image_type_params
**tp
;
36 fprintf(stderr
, "%s: %s: Null input\n", params
.cmdname
,
41 /* scan the linked list, check for registry and point the last one */
42 for (tp
= &dumpimage_tparams
; *tp
!= NULL
; tp
= &(*tp
)->next
) {
43 if (!strcmp((*tp
)->name
, tparams
->name
)) {
44 fprintf(stderr
, "%s: %s already registered\n",
45 params
.cmdname
, tparams
->name
);
50 /* add input struct entry at the end of link list */
52 /* mark input entry as last entry in the link list */
55 debug("Registered %s\n", tparams
->name
);
59 * dumpimage_extract_datafile -
61 * It scans all registered image types,
62 * verifies image_header for each supported image type
63 * if verification is successful, it extracts the desired file,
64 * indexed by pflag, from the image
66 * returns negative if input image format does not match with any of
67 * supported image types
69 static int dumpimage_extract_datafile(void *ptr
, struct stat
*sbuf
)
72 struct image_type_params
*curr
;
74 for (curr
= dumpimage_tparams
; curr
!= NULL
; curr
= curr
->next
) {
75 if (curr
->verify_header
) {
76 retval
= curr
->verify_header((unsigned char *)ptr
,
77 sbuf
->st_size
, ¶ms
);
81 * Extract the file from the image
82 * if verify is successful
84 if (curr
->extract_datafile
) {
85 curr
->extract_datafile(ptr
, ¶ms
);
88 "%s: extract_datafile undefined for %s\n",
89 params
.cmdname
, curr
->name
);
98 int main(int argc
, char **argv
)
105 struct image_type_params
*tparams
= NULL
;
107 /* Init all image generation/list support */
108 register_image_tool(dumpimage_register
);
110 params
.cmdname
= *argv
;
112 while ((opt
= getopt(argc
, argv
, "li:o:p:V")) != -1) {
118 params
.imagefile
= optarg
;
122 params
.outfile
= optarg
;
125 params
.pflag
= strtoul(optarg
, &ptr
, 10);
128 "%s: invalid file position %s\n",
129 params
.cmdname
, *argv
);
134 printf("dumpimage version %s\n", PLAIN_VERSION
);
144 /* set tparams as per input type_id */
145 tparams
= imagetool_get_type(params
.type
, dumpimage_tparams
);
146 if (tparams
== NULL
) {
147 fprintf(stderr
, "%s: unsupported type %s\n",
148 params
.cmdname
, genimg_get_type_name(params
.type
));
153 * check the passed arguments parameters meets the requirements
154 * as per image type to be generated/listed
156 if (tparams
->check_params
) {
157 if (tparams
->check_params(¶ms
))
162 params
.datafile
= argv
[optind
];
164 params
.imagefile
= argv
[optind
];
166 params
.outfile
= params
.datafile
;
168 ifd
= open(params
.imagefile
, O_RDONLY
|O_BINARY
);
170 fprintf(stderr
, "%s: Can't open \"%s\": %s\n",
171 params
.cmdname
, params
.imagefile
,
176 if (params
.lflag
|| params
.iflag
) {
177 if (fstat(ifd
, &sbuf
) < 0) {
178 fprintf(stderr
, "%s: Can't stat \"%s\": %s\n",
179 params
.cmdname
, params
.imagefile
,
184 if ((unsigned)sbuf
.st_size
< tparams
->header_size
) {
186 "%s: Bad size: \"%s\" is not valid image\n",
187 params
.cmdname
, params
.imagefile
);
191 ptr
= mmap(0, sbuf
.st_size
, PROT_READ
, MAP_SHARED
, ifd
, 0);
192 if (ptr
== MAP_FAILED
) {
193 fprintf(stderr
, "%s: Can't read \"%s\": %s\n",
194 params
.cmdname
, params
.imagefile
,
200 * Both calls bellow scan through dumpimage registry for all
201 * supported image types and verify the input image file
206 * Extract the data files from within the matched
207 * image type. Returns the error code if not matched
209 retval
= dumpimage_extract_datafile(ptr
, &sbuf
);
212 * Print the image information for matched image type
213 * Returns the error code if not matched
215 retval
= imagetool_verify_print_header(ptr
, &sbuf
,
219 (void)munmap((void *)ptr
, sbuf
.st_size
);
230 static void usage(void)
232 fprintf(stderr
, "Usage: %s -l image\n"
233 " -l ==> list image header information\n",
236 " %s -i image [-p position] [-o outfile] data_file\n"
237 " -i ==> extract from the 'image' a specific 'data_file'"
238 ", indexed by 'position' (starting at 0)\n",
241 " %s -V ==> print version information and exit\n",