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emul: add sanity check for blkfs

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This commit is contained in:
Virgil Dupras 2020-06-08 06:47:06 -04:00
parent bcddfd461d
commit 48f371d380
1 changed files with 7 additions and 0 deletions
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7
emul/emul.c
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@ -86,6 +86,13 @@ Machine* emul_init()
fprintf(stderr, "Can't open\n"); fprintf(stderr, "Can't open\n");
return NULL; return NULL;
} }
fseek(blkfp, 0, SEEK_END);
if (ftell(blkfp) < 100 * 1024) {
fclose(blkfp);
fprintf(stderr, "emul/blkfs too small, something's wrong, aborting.\n");
return NULL;
}
fseek(blkfp, 0, SEEK_SET);
// initialize memory // initialize memory
memset(m.mem, 0, 0x10000); memset(m.mem, 0, 0x10000);
FILE *bfp = fopen(FBIN_PATH, "r"); FILE *bfp = fopen(FBIN_PATH, "r");