]>
git.ipfire.org Git - people/ms/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 /* parameters initialized by core will be used by the image type code */
16 static struct image_tool_params params
= {
17 .type
= IH_TYPE_KERNEL
,
21 * dumpimage_extract_subimage -
23 * It scans all registered image types,
24 * verifies image_header for each supported image type
25 * if verification is successful, it extracts the desired file,
26 * indexed by pflag, from the image
28 * returns negative if input image format does not match with any of
29 * supported image types
31 static int dumpimage_extract_subimage(struct image_type_params
*tparams
,
32 void *ptr
, struct stat
*sbuf
)
36 if (tparams
->verify_header
) {
37 retval
= tparams
->verify_header((unsigned char *)ptr
,
38 sbuf
->st_size
, ¶ms
);
42 * Extract the file from the image
43 * if verify is successful
45 if (tparams
->extract_subimage
) {
46 retval
= tparams
->extract_subimage(ptr
, ¶ms
);
49 "%s: extract_subimage undefined for %s\n",
50 params
.cmdname
, tparams
->name
);
58 int main(int argc
, char **argv
)
65 struct image_type_params
*tparams
= NULL
;
67 params
.cmdname
= *argv
;
69 while ((opt
= getopt(argc
, argv
, "li:o:T:p:V")) != -1) {
75 params
.imagefile
= optarg
;
79 params
.outfile
= optarg
;
82 params
.type
= genimg_get_type_id(optarg
);
83 if (params
.type
< 0) {
88 params
.pflag
= strtoul(optarg
, &ptr
, 10);
91 "%s: invalid file position %s\n",
92 params
.cmdname
, *argv
);
97 printf("dumpimage version %s\n", PLAIN_VERSION
);
108 /* set tparams as per input type_id */
109 tparams
= imagetool_get_type(params
.type
);
110 if (tparams
== NULL
) {
111 fprintf(stderr
, "%s: unsupported type: %s\n",
112 params
.cmdname
, genimg_get_type_name(params
.type
));
117 * check the passed arguments parameters meets the requirements
118 * as per image type to be generated/listed
120 if (tparams
->check_params
) {
121 if (tparams
->check_params(¶ms
))
126 params
.datafile
= argv
[optind
];
128 params
.imagefile
= argv
[optind
];
130 params
.outfile
= params
.datafile
;
132 ifd
= open(params
.imagefile
, O_RDONLY
|O_BINARY
);
134 fprintf(stderr
, "%s: Can't open \"%s\": %s\n",
135 params
.cmdname
, params
.imagefile
,
140 if (params
.lflag
|| params
.iflag
) {
141 if (fstat(ifd
, &sbuf
) < 0) {
142 fprintf(stderr
, "%s: Can't stat \"%s\": %s\n",
143 params
.cmdname
, params
.imagefile
,
148 if ((uint32_t)sbuf
.st_size
< tparams
->header_size
) {
150 "%s: Bad size: \"%s\" is not valid image\n",
151 params
.cmdname
, params
.imagefile
);
155 ptr
= mmap(0, sbuf
.st_size
, PROT_READ
, MAP_SHARED
, ifd
, 0);
156 if (ptr
== MAP_FAILED
) {
157 fprintf(stderr
, "%s: Can't read \"%s\": %s\n",
158 params
.cmdname
, params
.imagefile
,
164 * Both calls bellow scan through dumpimage registry for all
165 * supported image types and verify the input image file
170 * Extract the data files from within the matched
171 * image type. Returns the error code if not matched
173 retval
= dumpimage_extract_subimage(tparams
, ptr
,
177 * Print the image information for matched image type
178 * Returns the error code if not matched
180 retval
= imagetool_verify_print_header(ptr
, &sbuf
,
184 (void)munmap((void *)ptr
, sbuf
.st_size
);
195 static void usage(void)
197 fprintf(stderr
, "Usage: %s -l image\n"
198 " -l ==> list image header information\n",
201 " %s -i image -T type [-p position] [-o outfile] data_file\n"
202 " -i ==> extract from the 'image' a specific 'data_file'\n"
203 " -T ==> set image type to 'type'\n"
204 " -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'\n",
207 " %s -V ==> print version information and exit\n",