]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - tools/dumpimage.c
1 // SPDX-License-Identifier: GPL-2.0+
5 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
12 static void usage(void);
14 /* parameters initialized by core will be used by the image type code */
15 static struct image_tool_params params
= {
16 .type
= IH_TYPE_KERNEL
,
20 * dumpimage_extract_subimage -
22 * It scans all registered image types,
23 * verifies image_header for each supported image type
24 * if verification is successful, it extracts the desired file,
25 * indexed by pflag, from the image
27 * returns negative if input image format does not match with any of
28 * supported image types
30 static int dumpimage_extract_subimage(struct image_type_params
*tparams
,
31 void *ptr
, struct stat
*sbuf
)
35 if (tparams
->verify_header
) {
36 retval
= tparams
->verify_header((unsigned char *)ptr
,
37 sbuf
->st_size
, ¶ms
);
41 * Extract the file from the image
42 * if verify is successful
44 if (tparams
->extract_subimage
) {
45 retval
= tparams
->extract_subimage(ptr
, ¶ms
);
48 "%s: extract_subimage undefined for %s\n",
49 params
.cmdname
, tparams
->name
);
57 int main(int argc
, char **argv
)
64 struct image_type_params
*tparams
= NULL
;
66 params
.cmdname
= *argv
;
68 while ((opt
= getopt(argc
, argv
, "li:o:T:p:V")) != -1) {
74 params
.imagefile
= optarg
;
78 params
.outfile
= optarg
;
81 params
.type
= genimg_get_type_id(optarg
);
82 if (params
.type
< 0) {
87 params
.pflag
= strtoul(optarg
, &ptr
, 10);
90 "%s: invalid file position %s\n",
91 params
.cmdname
, *argv
);
96 printf("dumpimage version %s\n", PLAIN_VERSION
);
107 /* set tparams as per input type_id */
108 tparams
= imagetool_get_type(params
.type
);
109 if (tparams
== NULL
) {
110 fprintf(stderr
, "%s: unsupported type: %s\n",
111 params
.cmdname
, genimg_get_type_name(params
.type
));
116 * check the passed arguments parameters meets the requirements
117 * as per image type to be generated/listed
119 if (tparams
->check_params
) {
120 if (tparams
->check_params(¶ms
))
125 params
.datafile
= argv
[optind
];
127 params
.imagefile
= argv
[optind
];
129 params
.outfile
= params
.datafile
;
131 ifd
= open(params
.imagefile
, O_RDONLY
|O_BINARY
);
133 fprintf(stderr
, "%s: Can't open \"%s\": %s\n",
134 params
.cmdname
, params
.imagefile
,
139 if (params
.lflag
|| params
.iflag
) {
140 if (fstat(ifd
, &sbuf
) < 0) {
141 fprintf(stderr
, "%s: Can't stat \"%s\": %s\n",
142 params
.cmdname
, params
.imagefile
,
147 if ((uint32_t)sbuf
.st_size
< tparams
->header_size
) {
149 "%s: Bad size: \"%s\" is not valid image\n",
150 params
.cmdname
, params
.imagefile
);
154 ptr
= mmap(0, sbuf
.st_size
, PROT_READ
, MAP_SHARED
, ifd
, 0);
155 if (ptr
== MAP_FAILED
) {
156 fprintf(stderr
, "%s: Can't read \"%s\": %s\n",
157 params
.cmdname
, params
.imagefile
,
163 * Both calls bellow scan through dumpimage registry for all
164 * supported image types and verify the input image file
169 * Extract the data files from within the matched
170 * image type. Returns the error code if not matched
172 retval
= dumpimage_extract_subimage(tparams
, ptr
,
176 * Print the image information for matched image type
177 * Returns the error code if not matched
179 retval
= imagetool_verify_print_header(ptr
, &sbuf
,
183 (void)munmap((void *)ptr
, sbuf
.st_size
);
194 static void usage(void)
196 fprintf(stderr
, "Usage: %s -l image\n"
197 " -l ==> list image header information\n",
200 " %s -i image -T type [-p position] [-o outfile] data_file\n"
201 " -i ==> extract from the 'image' a specific 'data_file'\n"
202 " -T ==> set image type to 'type'\n"
203 " -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'\n",
206 " %s -V ==> print version information and exit\n",