Blame view
tools/dumpimage.c
4.78 KB
a804b5ce2 Add dumpimage, a ... |
1 2 3 4 5 6 7 8 9 10 11 12 13 |
/* * Based on mkimage.c. * * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include "dumpimage.h" #include <image.h> #include <version.h> static void usage(void); |
a804b5ce2 Add dumpimage, a ... |
14 15 16 17 |
/* parameters initialized by core will be used by the image type code */ static struct image_tool_params params = { .type = IH_TYPE_KERNEL, }; |
a804b5ce2 Add dumpimage, a ... |
18 |
/* |
67f946cd1 dumpimage: replac... |
19 |
* dumpimage_extract_subimage - |
a804b5ce2 Add dumpimage, a ... |
20 21 22 23 24 25 26 27 28 |
* * It scans all registered image types, * verifies image_header for each supported image type * if verification is successful, it extracts the desired file, * indexed by pflag, from the image * * returns negative if input image format does not match with any of * supported image types */ |
67f946cd1 dumpimage: replac... |
29 |
static int dumpimage_extract_subimage(struct image_type_params *tparams, |
f41f5b7c0 dumpimage: add 'T... |
30 |
void *ptr, struct stat *sbuf) |
a804b5ce2 Add dumpimage, a ... |
31 32 |
{ int retval = -1; |
f41f5b7c0 dumpimage: add 'T... |
33 34 35 36 37 38 39 40 41 42 |
if (tparams->verify_header) { retval = tparams->verify_header((unsigned char *)ptr, sbuf->st_size, ¶ms); if (retval != 0) return -1; /* * Extract the file from the image * if verify is successful */ |
67f946cd1 dumpimage: replac... |
43 44 |
if (tparams->extract_subimage) { retval = tparams->extract_subimage(ptr, ¶ms); |
f41f5b7c0 dumpimage: add 'T... |
45 46 |
} else { fprintf(stderr, |
67f946cd1 dumpimage: replac... |
47 48 |
"%s: extract_subimage undefined for %s ", |
f41f5b7c0 dumpimage: add 'T... |
49 50 |
params.cmdname, tparams->name); return -2; |
a804b5ce2 Add dumpimage, a ... |
51 52 53 54 55 56 57 58 59 60 61 62 63 64 |
} } return retval; } int main(int argc, char **argv) { int opt; int ifd = -1; struct stat sbuf; char *ptr; int retval = 0; struct image_type_params *tparams = NULL; |
a804b5ce2 Add dumpimage, a ... |
65 |
params.cmdname = *argv; |
f41f5b7c0 dumpimage: add 'T... |
66 |
while ((opt = getopt(argc, argv, "li:o:T:p:V")) != -1) { |
a804b5ce2 Add dumpimage, a ... |
67 68 69 70 71 72 73 74 75 76 77 |
switch (opt) { case 'l': params.lflag = 1; break; case 'i': params.imagefile = optarg; params.iflag = 1; break; case 'o': params.outfile = optarg; break; |
f41f5b7c0 dumpimage: add 'T... |
78 79 80 81 82 83 |
case 'T': params.type = genimg_get_type_id(optarg); if (params.type < 0) { usage(); } break; |
a804b5ce2 Add dumpimage, a ... |
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 |
case 'p': params.pflag = strtoul(optarg, &ptr, 10); if (*ptr) { fprintf(stderr, "%s: invalid file position %s ", params.cmdname, *argv); exit(EXIT_FAILURE); } break; case 'V': printf("dumpimage version %s ", PLAIN_VERSION); exit(EXIT_SUCCESS); default: usage(); |
f41f5b7c0 dumpimage: add 'T... |
100 |
break; |
a804b5ce2 Add dumpimage, a ... |
101 102 103 104 105 106 107 |
} } if (optind >= argc) usage(); /* set tparams as per input type_id */ |
a93648d19 imagetool: replac... |
108 |
tparams = imagetool_get_type(params.type); |
a804b5ce2 Add dumpimage, a ... |
109 |
if (tparams == NULL) { |
f41f5b7c0 dumpimage: add 'T... |
110 111 |
fprintf(stderr, "%s: unsupported type: %s ", |
a804b5ce2 Add dumpimage, a ... |
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 |
params.cmdname, genimg_get_type_name(params.type)); exit(EXIT_FAILURE); } /* * check the passed arguments parameters meets the requirements * as per image type to be generated/listed */ if (tparams->check_params) { if (tparams->check_params(¶ms)) usage(); } if (params.iflag) params.datafile = argv[optind]; else params.imagefile = argv[optind]; if (!params.outfile) params.outfile = params.datafile; ifd = open(params.imagefile, O_RDONLY|O_BINARY); if (ifd < 0) { fprintf(stderr, "%s: Can't open \"%s\": %s ", params.cmdname, params.imagefile, strerror(errno)); exit(EXIT_FAILURE); } if (params.lflag || params.iflag) { if (fstat(ifd, &sbuf) < 0) { fprintf(stderr, "%s: Can't stat \"%s\": %s ", params.cmdname, params.imagefile, strerror(errno)); exit(EXIT_FAILURE); } |
f41f5b7c0 dumpimage: add 'T... |
149 |
if ((uint32_t)sbuf.st_size < tparams->header_size) { |
a804b5ce2 Add dumpimage, a ... |
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 |
fprintf(stderr, "%s: Bad size: \"%s\" is not valid image ", params.cmdname, params.imagefile); exit(EXIT_FAILURE); } ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0); if (ptr == MAP_FAILED) { fprintf(stderr, "%s: Can't read \"%s\": %s ", params.cmdname, params.imagefile, strerror(errno)); exit(EXIT_FAILURE); } /* * Both calls bellow scan through dumpimage registry for all * supported image types and verify the input image file * header for match */ if (params.iflag) { /* * Extract the data files from within the matched * image type. Returns the error code if not matched */ |
67f946cd1 dumpimage: replac... |
176 |
retval = dumpimage_extract_subimage(tparams, ptr, |
f41f5b7c0 dumpimage: add 'T... |
177 |
&sbuf); |
a804b5ce2 Add dumpimage, a ... |
178 179 180 181 182 |
} else { /* * Print the image information for matched image type * Returns the error code if not matched */ |
0ca6691c2 imagetool: move c... |
183 184 |
retval = imagetool_verify_print_header(ptr, &sbuf, tparams, ¶ms); |
a804b5ce2 Add dumpimage, a ... |
185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 |
} (void)munmap((void *)ptr, sbuf.st_size); (void)close(ifd); return retval; } (void)close(ifd); return EXIT_SUCCESS; } static void usage(void) { fprintf(stderr, "Usage: %s -l image " " -l ==> list image header information ", params.cmdname); fprintf(stderr, |
f41f5b7c0 dumpimage: add 'T... |
206 207 208 209 210 211 212 213 |
" %s -i image -T type [-p position] [-o outfile] data_file " " -i ==> extract from the 'image' a specific 'data_file' " " -T ==> set image type to 'type' " " -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image' ", |
a804b5ce2 Add dumpimage, a ... |
214 215 216 217 218 219 220 221 |
params.cmdname); fprintf(stderr, " %s -V ==> print version information and exit ", params.cmdname); exit(EXIT_FAILURE); } |