int acpi_table_add(const char *t) { static const char *dfl_id = "QEMUQEMU"; char buf[1024], *p, *f; struct acpi_table_header acpi_hdr; unsigned long val; uint32_t length; struct acpi_table_header *acpi_hdr_p; size_t off; memset(&acpi_hdr, 0, sizeof(acpi_hdr)); if (get_param_value(buf, sizeof(buf), "sig", t)) { strncpy(acpi_hdr.signature, buf, 4); } else { strncpy(acpi_hdr.signature, dfl_id, 4); } if (get_param_value(buf, sizeof(buf), "rev", t)) { val = strtoul(buf, &p, 10); if (val > 255 || *p != '\0') goto out; } else { val = 1; } acpi_hdr.revision = (int8_t)val; if (get_param_value(buf, sizeof(buf), "oem_id", t)) { strncpy(acpi_hdr.oem_id, buf, 6); } else { strncpy(acpi_hdr.oem_id, dfl_id, 6); } if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) { strncpy(acpi_hdr.oem_table_id, buf, 8); } else { strncpy(acpi_hdr.oem_table_id, dfl_id, 8); } if (get_param_value(buf, sizeof(buf), "oem_rev", t)) { val = strtol(buf, &p, 10); if(*p != '\0') goto out; } else { val = 1; } acpi_hdr.oem_revision = cpu_to_le32(val); if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) { strncpy(acpi_hdr.asl_compiler_id, buf, 4); } else { strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4); } if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) { val = strtol(buf, &p, 10); if(*p != '\0') goto out; } else { val = 1; } acpi_hdr.asl_compiler_revision = cpu_to_le32(val); if (!get_param_value(buf, sizeof(buf), "data", t)) { buf[0] = '\0'; } length = sizeof(acpi_hdr); f = buf; while (buf[0]) { struct stat s; char *n = strchr(f, ':'); if (n) *n = '\0'; if(stat(f, &s) < 0) { fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno)); goto out; } length += s.st_size; if (!n) break; *n = ':'; f = n + 1; } if (!acpi_tables) { acpi_tables_len = sizeof(uint16_t); acpi_tables = qemu_mallocz(acpi_tables_len); } acpi_tables = qemu_realloc(acpi_tables, acpi_tables_len + sizeof(uint16_t) + length); p = acpi_tables + acpi_tables_len; acpi_tables_len += sizeof(uint16_t) + length; *(uint16_t*)p = cpu_to_le32(length); p += sizeof(uint16_t); memcpy(p, &acpi_hdr, sizeof(acpi_hdr)); off = sizeof(acpi_hdr); f = buf; while (buf[0]) { struct stat s; int fd; char *n = strchr(f, ':'); if (n) *n = '\0'; fd = open(f, O_RDONLY); if(fd < 0) goto out; if(fstat(fd, &s) < 0) { close(fd); goto out; } /* off < length is necessary because file size can be changed under our foot */ while(s.st_size && off < length) { int r; r = read(fd, p + off, s.st_size); if (r > 0) { off += r; s.st_size -= r; } else if ((r < 0 && errno != EINTR) || r == 0) { close(fd); goto out; } } close(fd); if (!n) break; f = n + 1; } if (off < length) { /* don't pass random value in process to guest */ memset(p + off, 0, length - off); } acpi_hdr_p = (struct acpi_table_header*)p; acpi_hdr_p->length = cpu_to_le32(length); acpi_hdr_p->checksum = acpi_checksum((uint8_t*)p, length); /* increase number of tables */ (*(uint16_t*)acpi_tables) = cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1); return 0; out: if (acpi_tables) { qemu_free(acpi_tables); acpi_tables = NULL; } return -1; }