static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) { uint32_t magic; if (buf_size < 4) return 0; magic = be32_to_cpu(*(uint32_t *)buf); if (magic == VMDK3_MAGIC || magic == VMDK4_MAGIC) { return 100; } else { const char *p = (const char *)buf; const char *end = p + buf_size; while (p < end) { if (*p == '#') { /* skip comment line */ while (p < end && *p != '\n') { p++; } p++; continue; } if (*p == ' ') { while (p < end && *p == ' ') { p++; } /* skip '\r' if windows line endings used. */ if (p < end && *p == '\r') { p++; } /* only accept blank lines before 'version=' line */ if (p == end || *p != '\n') { return 0; } p++; continue; } if (end - p >= strlen("version=X\n")) { if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || strncmp("version=2\n", p, strlen("version=2\n")) == 0) { return 100; } } if (end - p >= strlen("version=X\r\n")) { if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { return 100; } } return 0; } return 0; } }