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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -31,3 +31,6 @@ src/jstest | |
| src/jstest.exe | ||
| src/gtest | ||
| src/gtest.exe | ||
| src/fsmap | ||
| src/hdfmt | ||
| src/fdresize | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| #include <errno.h> | ||
| #include <stdint.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
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| int main(int argc, char **argv) | ||
| { | ||
| int status; | ||
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| if (argc > 1) { | ||
| status = 0; | ||
| while (--argc) { | ||
| const char *fn = *++argv; | ||
| FILE *fp = fopen(fn, "rb"); | ||
| if (fp) { | ||
| unsigned char fsmap[0x200]; | ||
| if (fread(fsmap, sizeof fsmap, 1, fp) == 1) { | ||
| puts(fn); | ||
| unsigned char *sptr = fsmap; | ||
| unsigned char *eptr = fsmap + fsmap[0x1FE]; | ||
| unsigned char *lptr = fsmap + 0x100; | ||
| while (sptr < eptr) { | ||
| uint32_t start = *sptr++; | ||
| start |= (*sptr++ << 8); | ||
| start |= (*sptr++ << 16); | ||
| uint32_t len = *lptr++; | ||
| len |= (*lptr++ << 8); | ||
| len |= (*lptr++ << 16); | ||
| if (len > 0) | ||
| printf("%06X %06X (%d)\n", start, len, len); | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "fsmap: unable to read fsmap from %s: %s\n", fn, strerror(errno)); | ||
| status = 3; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "fsmap: unable to open %s for reading: %s\n", fn, strerror(errno)); | ||
| status = 2; | ||
| } | ||
| } | ||
| } | ||
| else { | ||
| fputs("Usage: fsmap <dat-file> [ ... ]\n", stderr); | ||
| status = 1; | ||
| } | ||
| return status; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| #include <errno.h> | ||
| #include <stdint.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
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||
| static int parse_size(const char *size) | ||
| { | ||
| int value; | ||
| char *end; | ||
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| value = strtol(size, &end, 10); | ||
| switch (*end) { | ||
| case 'k': | ||
| case 'K': | ||
| value *= 1024; | ||
| break; | ||
| case 'm': | ||
| case 'M': | ||
| value *= 1024 * 1024; | ||
| break; | ||
| case 'g': | ||
| case 'G': | ||
| value *= 1024 * 1024 * 1024; | ||
| break; | ||
| } | ||
| return value; | ||
| } | ||
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| static inline uint32_t read24(const unsigned char *base) | ||
| { | ||
| return base[0] | (base[1] << 8) | (base[2] << 16); | ||
| } | ||
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| static inline void write24(uint8_t *base, uint32_t value) | ||
| { | ||
| base[0] = value & 0xff; | ||
| base[1] = (value >> 8) & 0xff; | ||
| base[2] = (value >> 16) & 0xff; | ||
| } | ||
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| static uint8_t checksum(uint8_t *base) | ||
| { | ||
| int i = 255, c = 0; | ||
| unsigned sum = 255; | ||
| while (--i >= 0) { | ||
| sum += base[i] + c; | ||
| c = 0; | ||
| if (sum >= 256) { | ||
| sum &= 0xff; | ||
| c = 1; | ||
| } | ||
| } | ||
| return sum; | ||
| } | ||
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| int main(int argc, char **argv) | ||
| { | ||
| int status; | ||
|
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| if (argc == 3) { | ||
| int size = parse_size(argv[2]); | ||
| if (size > 0) { | ||
| const char *fn = argv[1]; | ||
| size_t len = strlen(fn) + 5; | ||
| char *dat_fn = alloca(len); | ||
| snprintf(dat_fn, len, "%s.dat", fn); | ||
| FILE *dat_fp = fopen(dat_fn, "rb+"); | ||
| if (dat_fp) { | ||
| unsigned char fsmap[512]; | ||
| if (fread(fsmap, sizeof fsmap, 1, dat_fp) == 1) { | ||
| if (fsmap[0x1FE] <= 3) { | ||
| status = 0; | ||
| char *dsc_fn = alloca(len); | ||
| snprintf(dsc_fn, len, "%s.dsc", fn); | ||
| FILE *dsc_fp = fopen(dsc_fn, "rb+"); | ||
| if (dsc_fp) { | ||
| unsigned char geom[22]; | ||
| if (fread(geom, sizeof geom, 1, dsc_fp) == 1) { | ||
| int new_sects = size / 256; | ||
| int old_sects = read24(fsmap + 0x0FC); | ||
| printf("hdresize: old sectors=%d, new_sects=%d\n", old_sects, new_sects); | ||
| if (new_sects > old_sects) { | ||
| write24(fsmap + 0x0FC, new_sects); | ||
| fsmap[0x0FF] = checksum(fsmap); | ||
| unsigned char *ptr = fsmap + 0x100; | ||
| write24(ptr, read24(ptr) + (new_sects - old_sects)); | ||
| fsmap[0x1ff] = checksum(ptr); | ||
| int cyl = 1 + ((new_sects - 1) / (33 * 255)); | ||
| geom[13] = cyl % 256; | ||
| geom[14] = cyl / 256; | ||
| geom[15] = 255; | ||
| if (fseek(dsc_fp, 0, SEEK_SET) == 0 && fwrite(geom, sizeof geom, 1, dsc_fp) == 1) { | ||
| if (fseek(dat_fp, 0, SEEK_SET) == 0 && fwrite(fsmap, sizeof fsmap, 1, dat_fp) == 1) { | ||
| status = 0; | ||
| printf("hdresize: %s grown\n", fn); | ||
| } | ||
| else | ||
| { | ||
| fprintf(stderr, "hdresize: unable to write fsmap to %s: %s\n", dat_fn, strerror(errno)); | ||
| status = 8; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: unable to write geometry to %s: %s\n", dsc_fn, strerror(errno)); | ||
| status = 7; | ||
| } | ||
| } | ||
| else { | ||
| fputs("hdresize: shrinking not implemented\n", stderr); | ||
| status = 6; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: unable to read geometry from %s: %s\n", dsc_fn, strerror(errno)); | ||
| status = 5; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: unable to open dsc file %s: %s\n", dsc_fn, strerror(errno)); | ||
| status = 2; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: %s has more than one free entry, compact before resizing\n", fn); | ||
| status = 4; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: unable to read fsmap from %s: %s\n", dat_fn, strerror(errno)); | ||
| status = 3; | ||
| } | ||
| fclose(dat_fp); | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: unable to open data file %s: %s\n", dat_fn, strerror(errno)); | ||
| status = 2; | ||
| } | ||
| } | ||
| else { | ||
| fprintf(stderr, "hdresize: %s is not a valid size\n", argv[2]); | ||
| status = 1; | ||
| } | ||
| } | ||
| else { | ||
| fputs("usage: hdresize <dat-file> <size>\n", stderr); | ||
| status = 1; | ||
| } | ||
| return status; | ||
| } | ||
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