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2025-07-22 02:42:34 +10:00 · 2025-07-22 02:42:34 +10:00 · b6b7d72717
commit b6b7d72717
96 changed files with 37739 additions and 0 deletions
--- a/splitimg.c
+++ b/splitimg.c
@ -0,0 +1,102 @@
+/*
+ * Disk image splitter
+ * 
+ * Copyright (c) 2016 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <ctype.h>
+#include <getopt.h>
+
+int main(int argc, char **argv)
+{
+    int blocksize, ret, i;
+    const char *infilename, *outpath;
+    FILE *f, *fo;
+    char buf1[1024];
+    uint8_t *buf;
+
+    if ((optind + 1) >= argc) {
+        printf("splitimg version " CONFIG_VERSION ", Copyright (c) 2011-2016 Fabrice Bellard\n"
+               "usage: splitimg infile outpath [blocksize]\n"
+               "Create a multi-file disk image for the RISCVEMU HTTP block device\n"
+               "\n"
+               "outpath must be a directory\n"
+               "blocksize is the block size in KB\n");
+        exit(1);
+    }
+
+    infilename = argv[optind++];
+    outpath = argv[optind++];
+    blocksize = 256;
+    if (optind < argc)
+        blocksize = strtol(argv[optind++], NULL, 0);
+
+    blocksize *= 1024;
+    
+    buf = malloc(blocksize);
+
+    f = fopen(infilename, "rb");
+    if (!f) {
+        perror(infilename);
+        exit(1);
+    }
+    i = 0;
+    for(;;) {
+        ret = fread(buf, 1, blocksize, f);
+        if (ret < 0) {
+            perror("fread");
+            exit(1);
+        }
+        if (ret == 0)
+            break;
+        if (ret < blocksize) {
+            printf("warning: last block is not full\n");
+            memset(buf + ret, 0, blocksize - ret);
+        }
+        snprintf(buf1, sizeof(buf1), "%s/blk%09u.bin", outpath, i);
+        fo = fopen(buf1, "wb");
+        if (!fo) {
+            perror(buf1);
+            exit(1);
+        }
+        fwrite(buf, 1, blocksize, fo);
+        fclose(fo);
+        i++;
+    }
+    fclose(f);
+    printf("%d blocks\n", i);
+
+    snprintf(buf1, sizeof(buf1), "%s/blk.txt", outpath);
+    fo = fopen(buf1, "wb");
+    if (!fo) {
+        perror(buf1);
+        exit(1);
+    }
+    fprintf(fo, "{\n");
+    fprintf(fo, "  block_size: %d,\n", blocksize / 1024);
+    fprintf(fo, "  n_block: %d,\n", i);
+    fprintf(fo, "}\n");
+    fclose(fo);
+    return 0;
+}