int main() { int counter = 0; priv_init(1, NULL); assert(priv_euid == getuid()); assert(priv_ruid == getuid()); assert(!privileged()); assert(priv_run(runfn, &counter) == 99); assert(counter == 1); return 0; }
bool tex::its_all_over () { if (privileged()) { if (page_head == page_tail && head == tail && dead_cycles == 0) { return TRUE; } back_input(); tail_append(new_null_box()); box_width(tail) = hsize; tail_append(new_glue(fill_glue)); tail_append(new_penalty(-010000000000)); build_page(); } return FALSE; }
void tex::main_control() { if (every_job != null) begin_token_list(every_job, EVERY_JOB_TEXT); big_switch: get_x_token(); reswitch: if (tracing_commands > 0) show_cur_cmd_chr(); switch(abs(mode) + cur_cmd) { hmode(LETTER): hmode(OTHER_CHAR): hmode(CHAR_GIVEN): goto main_loop; hmode(CHAR_NUM): scan_char_num(); cur_chr = cur_val; goto main_loop; hmode(NO_BOUNDARY): get_x_token(); if (cur_cmd == LETTER || cur_cmd == OTHER_CHAR || cur_cmd == CHAR_GIVEN || cur_cmd == CHAR_NUM) { cancel_boundary = TRUE; } goto reswitch; hmode(SPACER): if (space_factor == 1000) { goto append_normal_space; } else { app_space(); } break; hmode(EX_SPACE): mmode(EX_SPACE): goto append_normal_space; any_mode(RELAX): vmode(SPACER): mmode(SPACER): mmode(NO_BOUNDARY): break; any_mode(IGNORE_SPACES): get_nbx_token(); goto reswitch; vmode(STOP): if (its_all_over()) return; break; any_mode(LAST_ITEM): any_mode(MAC_PARAM): non_math(EQ_NO): vmode(VMOVE): hmode(HMOVE): mmode(HMOVE): vmode(VADJUST): vmode(ITAL_CORR): report_illegal_case(); break; non_math(SUP_MARK): non_math(SUB_MARK): non_math(MATH_CHAR_NUM): non_math(MATH_GIVEN): non_math(MATH_COMP): non_math(DELIM_NUM): non_math(LEFT_RIGHT): non_math(ABOVE): non_math(RADICAL): non_math(MATH_STYLE): non_math(MATH_CHOICE): non_math(VCENTER): non_math(NON_SCRIPT): non_math(MKERN): non_math(LIMIT_SWITCH): non_math(MSKIP): non_math(MATH_ACCENT): mmode(ENDV): mmode(PAR_END): mmode(STOP): mmode(VSKIP): mmode(UN_VBOX): mmode(VALIGN): mmode(HRULE): insert_dollar_sign(); break; vmode(HRULE): hmode(VRULE): mmode(VRULE): tail_append(scan_rule_spec()); if (abs(mode) == VMODE) prev_depth = IGNORE_DEPTH; else if (abs(mode) == HMODE) space_factor = 1000; break; vmode(VSKIP): hmode(HSKIP): mmode(HSKIP): mmode(MSKIP): append_glue(); break; any_mode(KERN): mmode(MKERN): append_kern(); break; non_math(LEFT_BRACE): new_save_level(SIMPLE_GROUP); break; any_mode(BEGIN_GROUP): new_save_level(SEMI_SIMPLE_GROUP); break; any_mode(END_GROUP): if (cur_group == SEMI_SIMPLE_GROUP) { unsave(); } else { off_save(); } break; any_mode(RIGHT_BRACE): handle_right_brace(); break; vmode(HMOVE): hmode(VMOVE): mmode(VMOVE): { int t; t = cur_chr; scan_normal_dimen(); if (t == 0) { scan_box(cur_val); } else { scan_box(-cur_val); } break; } any_mode(LEADER_SHIP): scan_box(LEADER_FLAG + cur_chr - A_LEADERS); break; any_mode(MAKE_BOX): begin_box(0); break; vmode(START_PAR): new_graf(cur_chr > 0); break; vmode(LETTER): vmode(OTHER_CHAR): vmode(CHAR_NUM): vmode(CHAR_GIVEN): vmode(MATH_SHIFT): vmode(UN_HBOX): vmode(VRULE): vmode(ACCENT): vmode(DISCRETIONARY): vmode(HSKIP): vmode(VALIGN): vmode(EX_SPACE): vmode(NO_BOUNDARY): back_input(); new_graf(TRUE); break; hmode(START_PAR): mmode(START_PAR): indent_in_hmode(); break; vmode(PAR_END): normal_paragraph(); if (mode > 0) build_page(); break; hmode(PAR_END): if (align_state < 0) off_save(); end_graf(); if (mode == VMODE) build_page(); break; hmode(STOP): hmode(VSKIP): hmode(HRULE): hmode(UN_VBOX): hmode(HALIGN): head_for_vmode(); break; any_mode(INSERT): hmode(VADJUST): mmode(VADJUST): begin_insert_or_adjust(); break; any_mode(MARK): make_mark(); break; any_mode(BREAK_PENALTY): append_penalty(); break; any_mode(REMOVE_ITEM): delete_last(); break; vmode(UN_VBOX): hmode(UN_HBOX): mmode(UN_HBOX): unpackage(); break; hmode(ITAL_CORR): append_italic_correction(); break; mmode(ITAL_CORR): tail_append(new_kern(0)); break; hmode(DISCRETIONARY): mmode(DISCRETIONARY): append_discretionary(); break; hmode(ACCENT): make_accent(); break; any_mode(CAR_RET): any_mode(TAB_MARK): align_error(); break; any_mode(NO_ALIGN): no_align_error(); break; any_mode(OMIT): omit_error(); break; vmode(HALIGN): hmode(VALIGN): init_align(); break; mmode(HALIGN): if (privileged()) { if (cur_group == MATH_SHIFT_GROUP) { init_align(); } else { off_save(); } } break; vmode(ENDV): hmode(ENDV): do_endv(); break; any_mode(END_CS_NAME): cs_error(); break; hmode(MATH_SHIFT): init_math(); break; mmode(EQ_NO): if (privileged()) { if (cur_group == MATH_SHIFT_GROUP) { start_eq_no(); } else { off_save(); } } break; mmode(LEFT_BRACE): tail_append(new_noad()); back_input(); scan_math(nucleus(tail)); break; mmode(LETTER): mmode(OTHER_CHAR): mmode(CHAR_GIVEN): if (cur_chr < 256) set_math_char(math_code(cur_chr)); else set_math_char(cur_chr); break; mmode(CHAR_NUM): scan_char_num(); cur_chr = cur_val; if (cur_chr < 256) set_math_char(math_code(cur_chr)); else set_math_char(cur_chr); break; mmode(MATH_CHAR_NUM): scan_fifteen_bit_int(); set_math_char(cur_val); break; mmode(MATH_GIVEN): set_math_char(cur_chr); break; mmode(DELIM_NUM): scan_twenty_seven_bit_int(); set_math_char(cur_val / 010000); break; mmode(MATH_COMP): tail_append(new_noad()); type(tail) = cur_chr; scan_math(nucleus(tail)); break; mmode(LIMIT_SWITCH): math_limit_switch(); break; mmode(RADICAL): math_radical(); break; mmode(ACCENT): mmode(MATH_ACCENT): math_ac(); break; mmode(VCENTER): scan_spec(VCENTER_GROUP, FALSE); normal_paragraph(); push_nest(); mode = -VMODE; prev_depth = IGNORE_DEPTH; if (every_vbox != null) begin_token_list(every_vbox, EVERY_VBOX_TEXT); break; mmode(MATH_STYLE): tail_append(new_style(cur_chr)); break; mmode(NON_SCRIPT): tail_append(new_glue(zero_glue)); subtype(tail) = COND_MATH_GLUE; break; mmode(MATH_CHOICE): append_choices(); break; mmode(SUB_MARK): mmode(SUP_MARK): sub_sup(); break; mmode(ABOVE): math_fraction(); break; mmode(LEFT_RIGHT): math_left_right(); break; mmode(MATH_SHIFT): if (cur_group == MATH_SHIFT_GROUP) { after_math(); } else { off_save(); } break; any_mode(AFTER_ASSIGNMENT): get_token(); after_token = cur_tok; break; any_mode(AFTER_GROUP): get_token(); save_for_after(cur_tok); break; any_mode(IN_STREAM): clopen_stream(); break; any_mode(MESSAGE): issue_message(); break; any_mode(CASE_SHIFT): shift_case(); break; any_mode(XRAY): show_whatever(); break; any_mode(EXTENSION): do_extension(); break; default: prefixed_command(); break; } goto big_switch; #define adjust_space_factor() \ { \ main_s = sf_code(cur_chr); \ if (main_s == 1000) { \ space_factor = 1000; \ } else if (main_s < 1000) { \ if (main_s > 0) { \ space_factor = main_s; \ } \ } else if (space_factor < 1000) { \ space_factor = 1000; \ } else { \ space_factor = main_s; \ } \ } main_loop: adjust_space_factor(); main_f = cur_font; bchar = font_bchar(main_f); false_bchar = font_false_bchar(main_f); if (mode > 0 && language != clang) fix_language(); fast_new_avail(lig_stack); font(lig_stack) = main_f; character(lig_stack) = cur_l = cur_chr; cur_q = tail; if (cancel_boundary) { cancel_boundary = FALSE; main_k = NON_ADDRESS; } else { main_k = bchar_label(main_f); } if (main_k == NON_ADDRESS) goto main_loop_move_2; cur_r = cur_l; cur_l = NON_CHAR; goto main_lig_loop_1; #define pack_lig(RT_HIT) \ { \ main_p = new_ligature(main_f, cur_l, link(cur_q)); \ if (lft_hit) { \ subtype(main_p) = 2; \ lft_hit = FALSE; \ } \ if (RT_HIT && lig_stack == null) { \ incr(subtype(main_p)); \ rt_hit = FALSE; \ } \ tail = link(cur_q) = main_p; \ ligature_present = FALSE; \ } #define wrapup(RT_HIT) \ { \ if (cur_l < NON_CHAR) { \ if (character(tail) == hyphen_char(main_f) \ && link(cur_q) != null) \ ins_disc = TRUE; \ if (ligature_present) \ pack_lig(RT_HIT); \ if (ins_disc) { \ ins_disc = FALSE; \ if (mode > 0) \ tail_append(new_disc()); \ } \ } \ } main_loop_wrapup: wrapup(rt_hit); main_loop_move: if (lig_stack == null) goto reswitch; cur_q = tail; cur_l = cur_r; main_loop_move_1: if (!is_char_node(lig_stack)) goto main_loop_move_lig; main_loop_move_2: if (cur_chr < font_bc(main_f) || cur_chr > font_ec(main_f)) { char_warning(main_f, cur_chr); free_avail(lig_stack); goto big_switch; } main_i = char_info(main_f, cur_l); if (!char_exists(main_i)) { char_warning(main_f, cur_chr); free_avail(lig_stack); goto big_switch; } tail_append(lig_stack); main_loop_lookahead: get_next(); if (cur_cmd == LETTER || cur_cmd == OTHER_CHAR || cur_cmd == CHAR_GIVEN) { goto main_loop_lookahead_1; } x_token(); if (cur_cmd == LETTER || cur_cmd == OTHER_CHAR || cur_cmd == CHAR_GIVEN) { goto main_loop_lookahead_1; } if (cur_cmd == CHAR_NUM) { scan_char_num(); cur_chr = cur_val; goto main_loop_lookahead_1; } if (cur_cmd == NO_BOUNDARY) { bchar = NON_CHAR; } cur_r = bchar; lig_stack = null; goto main_lig_loop; main_loop_lookahead_1: adjust_space_factor(); fast_new_avail(lig_stack); font(lig_stack) = main_f; character(lig_stack) = cur_r = cur_chr; if (cur_r == false_bchar) { cur_r = NON_CHAR; } main_lig_loop: if (char_tag(main_i) != LIG_TAG) { goto main_loop_wrapup; } main_k = lig_kern_start(main_f, main_i); main_j = *main_k; if (skip_byte(main_j) <= STOP_FLAG) { goto main_lig_loop_2; } main_k = lig_kern_restart(main_f, main_j); main_lig_loop_1: main_j = *main_k; main_lig_loop_2: if (next_char(main_j) == cur_r && skip_byte(main_j) <= STOP_FLAG) { if (op_byte(main_j) >= KERN_FLAG) { wrapup(rt_hit); tail_append(new_kern(char_kern(main_f, main_j))); goto main_loop_move; } if (cur_l == NON_CHAR) { lft_hit = TRUE; } else if (lig_stack == null) { rt_hit = TRUE; } if(interrupted) throw std::logic_error("interrupted"); switch (op_byte(main_j)) { case 1: case 5: cur_l = rem_byte(main_j); main_i = char_info(main_f, cur_l); ligature_present = TRUE; break; case 2: case 6: cur_r = rem_byte(main_j); if (lig_stack == null) { lig_stack = new_lig_item(cur_r); bchar = NON_CHAR; } else if (is_char_node(lig_stack)) { main_p = lig_stack; lig_stack = new_lig_item(cur_r); lig_ptr(lig_stack) = main_p; } else { character(lig_stack) = cur_r; } break; case 3: cur_r = rem_byte(main_j); main_p = lig_stack; lig_stack = new_lig_item(cur_r); link(lig_stack) = main_p; break; case 7: case 11: wrapup(FALSE); cur_q = tail; cur_l = rem_byte(main_j); main_i = char_info(main_f, cur_l); ligature_present = TRUE; break; default: cur_l = rem_byte(main_j); ligature_present = TRUE; if (lig_stack == null) { goto main_loop_wrapup; } else { goto main_loop_move_1; } break; } if (op_byte(main_j) > 4 && op_byte(main_j) != 7) goto main_loop_wrapup; if (cur_l < NON_CHAR) goto main_lig_loop; main_k = bchar_label(main_f); goto main_lig_loop_1; } if (skip_byte(main_j) == 0) { incr(main_k); } else { if (skip_byte(main_j) >= STOP_FLAG) goto main_loop_wrapup; main_k += skip_byte(main_j) + 1; } goto main_lig_loop_1; main_loop_move_lig: main_p = lig_ptr(lig_stack); if (main_p != null) { tail_append(main_p); } main_t = lig_stack; lig_stack = link(main_t); free_node(main_t, SMALL_NODE_SIZE); main_i = char_info(main_f, cur_l); ligature_present = TRUE; if (lig_stack == null) { if (main_p != null) { goto main_loop_lookahead; } else { cur_r = bchar; } } else { cur_r = character(lig_stack); } goto main_lig_loop; append_normal_space: if (space_skip == zero_glue) { main_p = font_glue(cur_font); if (main_p == null) main_p = find_font_glue(cur_font); main_t = new_glue(main_p); } else { main_t = new_param_glue(SPACE_SKIP_CODE); } tail_append(main_t); goto big_switch; }