#line 2 "guc-file.c" #line 4 "guc-file.c" #define YY_INT_ALIGNED short int /* A lexical scanner generated by flex */ #define yy_create_buffer GUC_yy_create_buffer #define yy_delete_buffer GUC_yy_delete_buffer #define yy_scan_buffer GUC_yy_scan_buffer #define yy_scan_string GUC_yy_scan_string #define yy_scan_bytes GUC_yy_scan_bytes #define yy_init_buffer GUC_yy_init_buffer #define yy_flush_buffer GUC_yy_flush_buffer #define yy_load_buffer_state GUC_yy_load_buffer_state #define yy_switch_to_buffer GUC_yy_switch_to_buffer #define yypush_buffer_state GUC_yypush_buffer_state #define yypop_buffer_state GUC_yypop_buffer_state #define yyensure_buffer_stack GUC_yyensure_buffer_stack #define yy_flex_debug GUC_yy_flex_debug #define yyin GUC_yyin #define yyleng GUC_yyleng #define yylex GUC_yylex #define yylineno GUC_yylineno #define yyout GUC_yyout #define yyrestart GUC_yyrestart #define yytext GUC_yytext #define yywrap GUC_yywrap #define yyalloc GUC_yyalloc #define yyrealloc GUC_yyrealloc #define yyfree GUC_yyfree #define FLEX_SCANNER #define YY_FLEX_MAJOR_VERSION 2 #define YY_FLEX_MINOR_VERSION 6 #define YY_FLEX_SUBMINOR_VERSION 4 #if YY_FLEX_SUBMINOR_VERSION > 0 #define FLEX_BETA #endif #ifdef yy_create_buffer #define GUC_yy_create_buffer_ALREADY_DEFINED #else #define yy_create_buffer GUC_yy_create_buffer #endif #ifdef yy_delete_buffer #define GUC_yy_delete_buffer_ALREADY_DEFINED #else #define yy_delete_buffer GUC_yy_delete_buffer #endif #ifdef yy_scan_buffer #define GUC_yy_scan_buffer_ALREADY_DEFINED #else #define yy_scan_buffer GUC_yy_scan_buffer #endif #ifdef yy_scan_string #define GUC_yy_scan_string_ALREADY_DEFINED #else #define yy_scan_string GUC_yy_scan_string #endif #ifdef yy_scan_bytes #define GUC_yy_scan_bytes_ALREADY_DEFINED #else #define yy_scan_bytes GUC_yy_scan_bytes #endif #ifdef yy_init_buffer #define GUC_yy_init_buffer_ALREADY_DEFINED #else #define yy_init_buffer GUC_yy_init_buffer #endif #ifdef yy_flush_buffer #define GUC_yy_flush_buffer_ALREADY_DEFINED #else #define yy_flush_buffer GUC_yy_flush_buffer #endif #ifdef yy_load_buffer_state #define GUC_yy_load_buffer_state_ALREADY_DEFINED #else #define yy_load_buffer_state GUC_yy_load_buffer_state #endif #ifdef yy_switch_to_buffer #define GUC_yy_switch_to_buffer_ALREADY_DEFINED #else #define yy_switch_to_buffer GUC_yy_switch_to_buffer #endif #ifdef yypush_buffer_state #define GUC_yypush_buffer_state_ALREADY_DEFINED #else #define yypush_buffer_state GUC_yypush_buffer_state #endif #ifdef yypop_buffer_state #define GUC_yypop_buffer_state_ALREADY_DEFINED #else #define yypop_buffer_state GUC_yypop_buffer_state #endif #ifdef yyensure_buffer_stack #define GUC_yyensure_buffer_stack_ALREADY_DEFINED #else #define yyensure_buffer_stack GUC_yyensure_buffer_stack #endif #ifdef yylex #define GUC_yylex_ALREADY_DEFINED #else #define yylex GUC_yylex #endif #ifdef yyrestart #define GUC_yyrestart_ALREADY_DEFINED #else #define yyrestart GUC_yyrestart #endif #ifdef yylex_init #define GUC_yylex_init_ALREADY_DEFINED #else #define yylex_init GUC_yylex_init #endif #ifdef yylex_init_extra #define GUC_yylex_init_extra_ALREADY_DEFINED #else #define yylex_init_extra GUC_yylex_init_extra #endif #ifdef yylex_destroy #define GUC_yylex_destroy_ALREADY_DEFINED #else #define yylex_destroy GUC_yylex_destroy #endif #ifdef yyget_debug #define GUC_yyget_debug_ALREADY_DEFINED #else #define yyget_debug GUC_yyget_debug #endif #ifdef yyset_debug #define GUC_yyset_debug_ALREADY_DEFINED #else #define yyset_debug GUC_yyset_debug #endif #ifdef yyget_extra #define GUC_yyget_extra_ALREADY_DEFINED #else #define yyget_extra GUC_yyget_extra #endif #ifdef yyset_extra #define GUC_yyset_extra_ALREADY_DEFINED #else #define yyset_extra GUC_yyset_extra #endif #ifdef yyget_in #define GUC_yyget_in_ALREADY_DEFINED #else #define yyget_in GUC_yyget_in #endif #ifdef yyset_in #define GUC_yyset_in_ALREADY_DEFINED #else #define yyset_in GUC_yyset_in #endif #ifdef yyget_out #define GUC_yyget_out_ALREADY_DEFINED #else #define yyget_out GUC_yyget_out #endif #ifdef yyset_out #define GUC_yyset_out_ALREADY_DEFINED #else #define yyset_out GUC_yyset_out #endif #ifdef yyget_leng #define GUC_yyget_leng_ALREADY_DEFINED #else #define yyget_leng GUC_yyget_leng #endif #ifdef yyget_text #define GUC_yyget_text_ALREADY_DEFINED #else #define yyget_text GUC_yyget_text #endif #ifdef yyget_lineno #define GUC_yyget_lineno_ALREADY_DEFINED #else #define yyget_lineno GUC_yyget_lineno #endif #ifdef yyset_lineno #define GUC_yyset_lineno_ALREADY_DEFINED #else #define yyset_lineno GUC_yyset_lineno #endif #ifdef yywrap #define GUC_yywrap_ALREADY_DEFINED #else #define yywrap GUC_yywrap #endif #ifdef yyalloc #define GUC_yyalloc_ALREADY_DEFINED #else #define yyalloc GUC_yyalloc #endif #ifdef yyrealloc #define GUC_yyrealloc_ALREADY_DEFINED #else #define yyrealloc GUC_yyrealloc #endif #ifdef yyfree #define GUC_yyfree_ALREADY_DEFINED #else #define yyfree GUC_yyfree #endif #ifdef yytext #define GUC_yytext_ALREADY_DEFINED #else #define yytext GUC_yytext #endif #ifdef yyleng #define GUC_yyleng_ALREADY_DEFINED #else #define yyleng GUC_yyleng #endif #ifdef yyin #define GUC_yyin_ALREADY_DEFINED #else #define yyin GUC_yyin #endif #ifdef yyout #define GUC_yyout_ALREADY_DEFINED #else #define yyout GUC_yyout #endif #ifdef yy_flex_debug #define GUC_yy_flex_debug_ALREADY_DEFINED #else #define yy_flex_debug GUC_yy_flex_debug #endif #ifdef yylineno #define GUC_yylineno_ALREADY_DEFINED #else #define yylineno GUC_yylineno #endif /* First, we deal with platform-specific or compiler-specific issues. */ /* begin standard C headers. */ #include #include #include #include /* end standard C headers. */ /* flex integer type definitions */ #ifndef FLEXINT_H #define FLEXINT_H /* C99 systems have . Non-C99 systems may or may not. */ #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h, * if you want the limit (max/min) macros for int types. */ #ifndef __STDC_LIMIT_MACROS #define __STDC_LIMIT_MACROS 1 #endif #include typedef int8_t flex_int8_t; typedef uint8_t flex_uint8_t; typedef int16_t flex_int16_t; typedef uint16_t flex_uint16_t; typedef int32_t flex_int32_t; typedef uint32_t flex_uint32_t; #else typedef signed char flex_int8_t; typedef short int flex_int16_t; typedef int flex_int32_t; typedef unsigned char flex_uint8_t; typedef unsigned short int flex_uint16_t; typedef unsigned int flex_uint32_t; /* Limits of integral types. */ #ifndef INT8_MIN #define INT8_MIN (-128) #endif #ifndef INT16_MIN #define INT16_MIN (-32767-1) #endif #ifndef INT32_MIN #define INT32_MIN (-2147483647-1) #endif #ifndef INT8_MAX #define INT8_MAX (127) #endif #ifndef INT16_MAX #define INT16_MAX (32767) #endif #ifndef INT32_MAX #define INT32_MAX (2147483647) #endif #ifndef UINT8_MAX #define UINT8_MAX (255U) #endif #ifndef UINT16_MAX #define UINT16_MAX (65535U) #endif #ifndef UINT32_MAX #define UINT32_MAX (4294967295U) #endif #ifndef SIZE_MAX #define SIZE_MAX (~(size_t)0) #endif #endif /* ! C99 */ #endif /* ! FLEXINT_H */ /* begin standard C++ headers. */ /* TODO: this is always defined, so inline it */ #define yyconst const #if defined(__GNUC__) && __GNUC__ >= 3 #define yynoreturn __attribute__((__noreturn__)) #else #define yynoreturn #endif /* Returned upon end-of-file. */ #define YY_NULL 0 /* Promotes a possibly negative, possibly signed char to an * integer in range [0..255] for use as an array index. */ #define YY_SC_TO_UI(c) ((YY_CHAR) (c)) /* Enter a start condition. This macro really ought to take a parameter, * but we do it the disgusting crufty way forced on us by the ()-less * definition of BEGIN. */ #define BEGIN (yy_start) = 1 + 2 * /* Translate the current start state into a value that can be later handed * to BEGIN to return to the state. The YYSTATE alias is for lex * compatibility. */ #define YY_START (((yy_start) - 1) / 2) #define YYSTATE YY_START /* Action number for EOF rule of a given start state. */ #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) /* Special action meaning "start processing a new file". */ #define YY_NEW_FILE yyrestart( yyin ) #define YY_END_OF_BUFFER_CHAR 0 /* Size of default input buffer. */ #ifndef YY_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k. * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case. * Ditto for the __ia64__ case accordingly. */ #define YY_BUF_SIZE 32768 #else #define YY_BUF_SIZE 16384 #endif /* __ia64__ */ #endif /* The state buf must be large enough to hold one state per character in the main buffer. */ #define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type)) #ifndef YY_TYPEDEF_YY_BUFFER_STATE #define YY_TYPEDEF_YY_BUFFER_STATE typedef struct yy_buffer_state *YY_BUFFER_STATE; #endif #ifndef YY_TYPEDEF_YY_SIZE_T #define YY_TYPEDEF_YY_SIZE_T typedef size_t yy_size_t; #endif extern int yyleng; extern FILE *yyin, *yyout; #define EOB_ACT_CONTINUE_SCAN 0 #define EOB_ACT_END_OF_FILE 1 #define EOB_ACT_LAST_MATCH 2 #define YY_LESS_LINENO(n) #define YY_LINENO_REWIND_TO(ptr) /* Return all but the first "n" matched characters back to the input stream. */ #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ *yy_cp = (yy_hold_char); \ YY_RESTORE_YY_MORE_OFFSET \ (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ YY_DO_BEFORE_ACTION; /* set up yytext again */ \ } \ while ( 0 ) #define unput(c) yyunput( c, (yytext_ptr) ) #ifndef YY_STRUCT_YY_BUFFER_STATE #define YY_STRUCT_YY_BUFFER_STATE struct yy_buffer_state { FILE *yy_input_file; char *yy_ch_buf; /* input buffer */ char *yy_buf_pos; /* current position in input buffer */ /* Size of input buffer in bytes, not including room for EOB * characters. */ int yy_buf_size; /* Number of characters read into yy_ch_buf, not including EOB * characters. */ int yy_n_chars; /* Whether we "own" the buffer - i.e., we know we created it, * and can realloc() it to grow it, and should free() it to * delete it. */ int yy_is_our_buffer; /* Whether this is an "interactive" input source; if so, and * if we're using stdio for input, then we want to use getc() * instead of fread(), to make sure we stop fetching input after * each newline. */ int yy_is_interactive; /* Whether we're considered to be at the beginning of a line. * If so, '^' rules will be active on the next match, otherwise * not. */ int yy_at_bol; int yy_bs_lineno; /**< The line count. */ int yy_bs_column; /**< The column count. */ /* Whether to try to fill the input buffer when we reach the * end of it. */ int yy_fill_buffer; int yy_buffer_status; #define YY_BUFFER_NEW 0 #define YY_BUFFER_NORMAL 1 /* When an EOF's been seen but there's still some text to process * then we mark the buffer as YY_EOF_PENDING, to indicate that we * shouldn't try reading from the input source any more. We might * still have a bunch of tokens to match, though, because of * possible backing-up. * * When we actually see the EOF, we change the status to "new" * (via yyrestart()), so that the user can continue scanning by * just pointing yyin at a new input file. */ #define YY_BUFFER_EOF_PENDING 2 }; #endif /* !YY_STRUCT_YY_BUFFER_STATE */ /* Stack of input buffers. */ static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */ static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */ static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */ /* We provide macros for accessing buffer states in case in the * future we want to put the buffer states in a more general * "scanner state". * * Returns the top of the stack, or NULL. */ #define YY_CURRENT_BUFFER ( (yy_buffer_stack) \ ? (yy_buffer_stack)[(yy_buffer_stack_top)] \ : NULL) /* Same as previous macro, but useful when we know that the buffer stack is not * NULL or when we need an lvalue. For internal use only. */ #define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)] /* yy_hold_char holds the character lost when yytext is formed. */ static char yy_hold_char; static int yy_n_chars; /* number of characters read into yy_ch_buf */ int yyleng; /* Points to current character in buffer. */ static char *yy_c_buf_p = NULL; static int yy_init = 0; /* whether we need to initialize */ static int yy_start = 0; /* start state number */ /* Flag which is used to allow yywrap()'s to do buffer switches * instead of setting up a fresh yyin. A bit of a hack ... */ static int yy_did_buffer_switch_on_eof; void yyrestart ( FILE *input_file ); void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer ); YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size ); void yy_delete_buffer ( YY_BUFFER_STATE b ); void yy_flush_buffer ( YY_BUFFER_STATE b ); void yypush_buffer_state ( YY_BUFFER_STATE new_buffer ); void yypop_buffer_state ( void ); static void yyensure_buffer_stack ( void ); static void yy_load_buffer_state ( void ); static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file ); #define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER ) YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size ); YY_BUFFER_STATE yy_scan_string ( const char *yy_str ); YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len ); void *yyalloc ( yy_size_t ); void *yyrealloc ( void *, yy_size_t ); void yyfree ( void * ); #define yy_new_buffer yy_create_buffer #define yy_set_interactive(is_interactive) \ { \ if ( ! YY_CURRENT_BUFFER ){ \ yyensure_buffer_stack (); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE ); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ } #define yy_set_bol(at_bol) \ { \ if ( ! YY_CURRENT_BUFFER ){\ yyensure_buffer_stack (); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE ); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ } #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) /* Begin user sect3 */ #define GUC_yywrap() (/*CONSTCOND*/1) #define YY_SKIP_YYWRAP typedef flex_uint8_t YY_CHAR; FILE *yyin = NULL, *yyout = NULL; typedef int yy_state_type; extern int yylineno; int yylineno = 1; extern char *yytext; #ifdef yytext_ptr #undef yytext_ptr #endif #define yytext_ptr yytext static yy_state_type yy_get_previous_state ( void ); static yy_state_type yy_try_NUL_trans ( yy_state_type current_state ); static int yy_get_next_buffer ( void ); static void yynoreturn yy_fatal_error ( const char* msg ); /* Done after the current pattern has been matched and before the * corresponding action - sets up yytext. */ #define YY_DO_BEFORE_ACTION \ (yytext_ptr) = yy_bp; \ yyleng = (int) (yy_cp - yy_bp); \ (yy_hold_char) = *yy_cp; \ *yy_cp = '\0'; \ (yy_c_buf_p) = yy_cp; #define YY_NUM_RULES 12 #define YY_END_OF_BUFFER 13 /* This struct is not used in this scanner, but its presence is necessary. */ struct yy_trans_info { flex_int32_t yy_verify; flex_int32_t yy_nxt; }; static const flex_int16_t yy_accept[41] = { 0, 0, 0, 13, 11, 2, 1, 3, 11, 11, 9, 8, 8, 10, 4, 2, 3, 0, 6, 0, 9, 8, 8, 9, 0, 8, 8, 7, 7, 4, 4, 0, 9, 8, 8, 7, 5, 5, 5, 5, 0 } ; static const YY_CHAR yy_ec[256] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 4, 1, 1, 1, 5, 1, 1, 1, 6, 1, 7, 8, 9, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 1, 1, 12, 1, 1, 1, 13, 13, 13, 13, 14, 13, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 16, 1, 1, 17, 1, 13, 13, 13, 13, 14, 13, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 18, 15, 15, 1, 1, 1, 1, 1, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19 } ; static const YY_CHAR yy_meta[20] = { 0, 1, 1, 2, 1, 1, 1, 3, 3, 3, 4, 4, 1, 5, 6, 5, 1, 3, 5, 3 } ; static const flex_int16_t yy_base[48] = { 0, 0, 0, 50, 148, 43, 148, 0, 15, 24, 30, 28, 22, 148, 40, 35, 0, 17, 25, 0, 15, 0, 10, 0, 52, 0, 54, 10, 66, 79, 0, 13, 15, 0, 0, 4, 90, 101, 0, 0, 148, 118, 124, 127, 131, 133, 137, 141 } ; static const flex_int16_t yy_def[48] = { 0, 40, 1, 40, 40, 40, 40, 41, 42, 40, 43, 40, 11, 40, 44, 40, 41, 42, 40, 42, 43, 11, 11, 20, 40, 45, 40, 46, 40, 44, 29, 40, 40, 26, 26, 46, 47, 47, 37, 37, 0, 40, 40, 40, 40, 40, 40, 40 } ; static const flex_int16_t yy_nxt[168] = { 0, 4, 5, 6, 7, 8, 9, 9, 10, 4, 11, 12, 13, 14, 14, 14, 4, 14, 14, 14, 18, 35, 18, 32, 32, 32, 32, 35, 25, 24, 17, 19, 20, 19, 21, 22, 20, 15, 22, 22, 25, 25, 25, 25, 24, 15, 26, 27, 28, 27, 40, 40, 40, 40, 40, 40, 40, 30, 31, 31, 40, 40, 32, 32, 33, 33, 40, 34, 34, 25, 40, 40, 25, 27, 27, 27, 27, 27, 40, 36, 36, 36, 40, 37, 36, 36, 27, 28, 27, 40, 40, 40, 40, 40, 40, 40, 30, 27, 27, 27, 40, 40, 40, 40, 40, 40, 40, 39, 27, 27, 27, 40, 40, 40, 40, 40, 40, 40, 39, 16, 40, 16, 16, 16, 16, 17, 40, 17, 17, 17, 17, 23, 40, 23, 29, 29, 29, 29, 25, 25, 27, 27, 27, 27, 38, 38, 38, 38, 3, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40 } ; static const flex_int16_t yy_chk[168] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 8, 35, 17, 31, 31, 32, 32, 27, 22, 20, 18, 8, 9, 17, 9, 9, 11, 15, 11, 11, 12, 11, 11, 11, 10, 5, 11, 14, 14, 14, 3, 0, 0, 0, 0, 0, 0, 14, 24, 24, 0, 0, 24, 24, 26, 26, 0, 26, 26, 26, 0, 0, 26, 28, 28, 28, 28, 28, 0, 28, 28, 28, 0, 28, 28, 28, 29, 29, 29, 0, 0, 0, 0, 0, 0, 0, 29, 36, 36, 36, 0, 0, 0, 0, 0, 0, 0, 36, 37, 37, 37, 0, 0, 0, 0, 0, 0, 0, 37, 41, 0, 41, 41, 41, 41, 42, 0, 42, 42, 42, 42, 43, 0, 43, 44, 44, 44, 44, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40 } ; static yy_state_type yy_last_accepting_state; static char *yy_last_accepting_cpos; extern int yy_flex_debug; int yy_flex_debug = 0; /* The intent behind this definition is that it'll catch * any uses of REJECT which flex missed. */ #define REJECT reject_used_but_not_detected #define yymore() yymore_used_but_not_detected #define YY_MORE_ADJ 0 #define YY_RESTORE_YY_MORE_OFFSET char *yytext; #line 1 "guc-file.l" /* -*-pgsql-c-*- */ /* * Scanner for the configuration file * * Copyright (c) 2000-2016, PostgreSQL Global Development Group * * src/backend/utils/misc/guc-file.l */ #line 11 "guc-file.l" #include "postgres.h" #include #include #include "mb/pg_wchar.h" #include "miscadmin.h" #include "storage/fd.h" #include "utils/guc.h" /* * flex emits a yy_fatal_error() function that it calls in response to * critical errors like malloc failure, file I/O errors, and detection of * internal inconsistency. That function prints a message and calls exit(). * Mutate it to instead call our handler, which jumps out of the parser. */ #undef fprintf #define fprintf(file, fmt, msg) GUC_flex_fatal(msg) enum { GUC_ID = 1, GUC_STRING = 2, GUC_INTEGER = 3, GUC_REAL = 4, GUC_EQUALS = 5, GUC_UNQUOTED_STRING = 6, GUC_QUALIFIED_ID = 7, GUC_EOL = 99, GUC_ERROR = 100 }; static unsigned int ConfigFileLineno; static const char *GUC_flex_fatal_errmsg; static sigjmp_buf *GUC_flex_fatal_jmp; static void FreeConfigVariable(ConfigVariable *item); static void record_config_file_error(const char *errmsg, const char *config_file, int lineno, ConfigVariable **head_p, ConfigVariable **tail_p); static int GUC_flex_fatal(const char *msg); static char *GUC_scanstr(const char *s); #line 808 "guc-file.c" #define YY_NO_INPUT 1 #line 810 "guc-file.c" #define INITIAL 0 #ifndef YY_NO_UNISTD_H /* Special case for "unistd.h", since it is non-ANSI. We include it way * down here because we want the user's section 1 to have been scanned first. * The user has a chance to override it with an option. */ #include #endif #ifndef YY_EXTRA_TYPE #define YY_EXTRA_TYPE void * #endif static int yy_init_globals ( void ); /* Accessor methods to globals. These are made visible to non-reentrant scanners for convenience. */ int yylex_destroy ( void ); int yyget_debug ( void ); void yyset_debug ( int debug_flag ); YY_EXTRA_TYPE yyget_extra ( void ); void yyset_extra ( YY_EXTRA_TYPE user_defined ); FILE *yyget_in ( void ); void yyset_in ( FILE * _in_str ); FILE *yyget_out ( void ); void yyset_out ( FILE * _out_str ); int yyget_leng ( void ); char *yyget_text ( void ); int yyget_lineno ( void ); void yyset_lineno ( int _line_number ); /* Macros after this point can all be overridden by user definitions in * section 1. */ #ifndef YY_SKIP_YYWRAP #ifdef __cplusplus extern "C" int yywrap ( void ); #else extern int yywrap ( void ); #endif #endif #ifndef YY_NO_UNPUT #endif #ifndef yytext_ptr static void yy_flex_strncpy ( char *, const char *, int ); #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen ( const char * ); #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput ( void ); #else static int input ( void ); #endif #endif /* Amount of stuff to slurp up with each read. */ #ifndef YY_READ_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k */ #define YY_READ_BUF_SIZE 16384 #else #define YY_READ_BUF_SIZE 8192 #endif /* __ia64__ */ #endif /* Copy whatever the last rule matched to the standard output. */ #ifndef ECHO /* This used to be an fputs(), but since the string might contain NUL's, * we now use fwrite(). */ #define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0) #endif /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, * is returned in "result". */ #ifndef YY_INPUT #define YY_INPUT(buf,result,max_size) \ if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ { \ int c = '*'; \ int n; \ for ( n = 0; n < max_size && \ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ buf[n] = (char) c; \ if ( c == '\n' ) \ buf[n++] = (char) c; \ if ( c == EOF && ferror( yyin ) ) \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ result = n; \ } \ else \ { \ errno=0; \ while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \ { \ if( errno != EINTR) \ { \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ break; \ } \ errno=0; \ clearerr(yyin); \ } \ }\ \ #endif /* No semi-colon after return; correct usage is to write "yyterminate();" - * we don't want an extra ';' after the "return" because that will cause * some compilers to complain about unreachable statements. */ #ifndef yyterminate #define yyterminate() return YY_NULL #endif /* Number of entries by which start-condition stack grows. */ #ifndef YY_START_STACK_INCR #define YY_START_STACK_INCR 25 #endif /* Report a fatal error. */ #ifndef YY_FATAL_ERROR #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) #endif /* end tables serialization structures and prototypes */ /* Default declaration of generated scanner - a define so the user can * easily add parameters. */ #ifndef YY_DECL #define YY_DECL_IS_OURS 1 extern int yylex (void); #define YY_DECL int yylex (void) #endif /* !YY_DECL */ /* Code executed at the beginning of each rule, after yytext and yyleng * have been set up. */ #ifndef YY_USER_ACTION #define YY_USER_ACTION #endif /* Code executed at the end of each rule. */ #ifndef YY_BREAK #define YY_BREAK /*LINTED*/break; #endif #define YY_RULE_SETUP \ YY_USER_ACTION /** The main scanner function which does all the work. */ YY_DECL { yy_state_type yy_current_state; char *yy_cp, *yy_bp; int yy_act; if ( !(yy_init) ) { (yy_init) = 1; #ifdef YY_USER_INIT YY_USER_INIT; #endif if ( ! (yy_start) ) (yy_start) = 1; /* first start state */ if ( ! yyin ) yyin = stdin; if ( ! yyout ) yyout = stdout; if ( ! YY_CURRENT_BUFFER ) { yyensure_buffer_stack (); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE ); } yy_load_buffer_state( ); } { #line 92 "guc-file.l" #line 1028 "guc-file.c" while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */ { yy_cp = (yy_c_buf_p); /* Support of yytext. */ *yy_cp = (yy_hold_char); /* yy_bp points to the position in yy_ch_buf of the start of * the current run. */ yy_bp = yy_cp; yy_current_state = (yy_start); yy_match: do { YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ; if ( yy_accept[yy_current_state] ) { (yy_last_accepting_state) = yy_current_state; (yy_last_accepting_cpos) = yy_cp; } while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) { yy_current_state = (int) yy_def[yy_current_state]; if ( yy_current_state >= 41 ) yy_c = yy_meta[yy_c]; } yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c]; ++yy_cp; } while ( yy_current_state != 40 ); yy_cp = (yy_last_accepting_cpos); yy_current_state = (yy_last_accepting_state); yy_find_action: yy_act = yy_accept[yy_current_state]; YY_DO_BEFORE_ACTION; do_action: /* This label is used only to access EOF actions. */ switch ( yy_act ) { /* beginning of action switch */ case 0: /* must back up */ /* undo the effects of YY_DO_BEFORE_ACTION */ *yy_cp = (yy_hold_char); yy_cp = (yy_last_accepting_cpos); yy_current_state = (yy_last_accepting_state); goto yy_find_action; case 1: /* rule 1 can match eol */ YY_RULE_SETUP #line 94 "guc-file.l" ConfigFileLineno++; return GUC_EOL; YY_BREAK case 2: YY_RULE_SETUP #line 95 "guc-file.l" /* eat whitespace */ YY_BREAK case 3: YY_RULE_SETUP #line 96 "guc-file.l" /* eat comment (.* matches anything until newline) */ YY_BREAK case 4: YY_RULE_SETUP #line 98 "guc-file.l" return GUC_ID; YY_BREAK case 5: YY_RULE_SETUP #line 99 "guc-file.l" return GUC_QUALIFIED_ID; YY_BREAK case 6: YY_RULE_SETUP #line 100 "guc-file.l" return GUC_STRING; YY_BREAK case 7: YY_RULE_SETUP #line 101 "guc-file.l" return GUC_UNQUOTED_STRING; YY_BREAK case 8: YY_RULE_SETUP #line 102 "guc-file.l" return GUC_INTEGER; YY_BREAK case 9: YY_RULE_SETUP #line 103 "guc-file.l" return GUC_REAL; YY_BREAK case 10: YY_RULE_SETUP #line 104 "guc-file.l" return GUC_EQUALS; YY_BREAK case 11: YY_RULE_SETUP #line 106 "guc-file.l" return GUC_ERROR; YY_BREAK case 12: YY_RULE_SETUP #line 108 "guc-file.l" YY_FATAL_ERROR( "flex scanner jammed" ); YY_BREAK #line 1142 "guc-file.c" case YY_STATE_EOF(INITIAL): yyterminate(); case YY_END_OF_BUFFER: { /* Amount of text matched not including the EOB char. */ int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1; /* Undo the effects of YY_DO_BEFORE_ACTION. */ *yy_cp = (yy_hold_char); YY_RESTORE_YY_MORE_OFFSET if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) { /* We're scanning a new file or input source. It's * possible that this happened because the user * just pointed yyin at a new source and called * yylex(). If so, then we have to assure * consistency between YY_CURRENT_BUFFER and our * globals. Here is the right place to do so, because * this is the first action (other than possibly a * back-up) that will match for the new input source. */ (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; } /* Note that here we test for yy_c_buf_p "<=" to the position * of the first EOB in the buffer, since yy_c_buf_p will * already have been incremented past the NUL character * (since all states make transitions on EOB to the * end-of-buffer state). Contrast this with the test * in input(). */ if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) { /* This was really a NUL. */ yy_state_type yy_next_state; (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( ); /* Okay, we're now positioned to make the NUL * transition. We couldn't have * yy_get_previous_state() go ahead and do it * for us because it doesn't know how to deal * with the possibility of jamming (and we don't * want to build jamming into it because then it * will run more slowly). */ yy_next_state = yy_try_NUL_trans( yy_current_state ); yy_bp = (yytext_ptr) + YY_MORE_ADJ; if ( yy_next_state ) { /* Consume the NUL. */ yy_cp = ++(yy_c_buf_p); yy_current_state = yy_next_state; goto yy_match; } else { yy_cp = (yy_last_accepting_cpos); yy_current_state = (yy_last_accepting_state); goto yy_find_action; } } else switch ( yy_get_next_buffer( ) ) { case EOB_ACT_END_OF_FILE: { (yy_did_buffer_switch_on_eof) = 0; if ( yywrap( ) ) { /* Note: because we've taken care in * yy_get_next_buffer() to have set up * yytext, we can now set up * yy_c_buf_p so that if some total * hoser (like flex itself) wants to * call the scanner after we return the * YY_NULL, it'll still work - another * YY_NULL will get returned. */ (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ; yy_act = YY_STATE_EOF(YY_START); goto do_action; } else { if ( ! (yy_did_buffer_switch_on_eof) ) YY_NEW_FILE; } break; } case EOB_ACT_CONTINUE_SCAN: (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( ); yy_cp = (yy_c_buf_p); yy_bp = (yytext_ptr) + YY_MORE_ADJ; goto yy_match; case EOB_ACT_LAST_MATCH: (yy_c_buf_p) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)]; yy_current_state = yy_get_previous_state( ); yy_cp = (yy_c_buf_p); yy_bp = (yytext_ptr) + YY_MORE_ADJ; goto yy_find_action; } break; } default: YY_FATAL_ERROR( "fatal flex scanner internal error--no action found" ); } /* end of action switch */ } /* end of scanning one token */ } /* end of user's declarations */ } /* end of yylex */ /* yy_get_next_buffer - try to read in a new buffer * * Returns a code representing an action: * EOB_ACT_LAST_MATCH - * EOB_ACT_CONTINUE_SCAN - continue scanning from current position * EOB_ACT_END_OF_FILE - end of file */ static int yy_get_next_buffer (void) { char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; char *source = (yytext_ptr); int number_to_move, i; int ret_val; if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] ) YY_FATAL_ERROR( "fatal flex scanner internal error--end of buffer missed" ); if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) { /* Don't try to fill the buffer, so this is an EOF. */ if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 ) { /* We matched a single character, the EOB, so * treat this as a final EOF. */ return EOB_ACT_END_OF_FILE; } else { /* We matched some text prior to the EOB, first * process it. */ return EOB_ACT_LAST_MATCH; } } /* Try to read more data. */ /* First move last chars to start of buffer. */ number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1); for ( i = 0; i < number_to_move; ++i ) *(dest++) = *(source++); if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) /* don't do the read, it's not guaranteed to return an EOF, * just force an EOF */ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0; else { int num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; while ( num_to_read <= 0 ) { /* Not enough room in the buffer - grow it. */ /* just a shorter name for the current buffer */ YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; int yy_c_buf_p_offset = (int) ((yy_c_buf_p) - b->yy_ch_buf); if ( b->yy_is_our_buffer ) { int new_size = b->yy_buf_size * 2; if ( new_size <= 0 ) b->yy_buf_size += b->yy_buf_size / 8; else b->yy_buf_size *= 2; b->yy_ch_buf = (char *) /* Include room in for 2 EOB chars. */ yyrealloc( (void *) b->yy_ch_buf, (yy_size_t) (b->yy_buf_size + 2) ); } else /* Can't grow it, we don't own it. */ b->yy_ch_buf = NULL; if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" ); (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset]; num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; } if ( num_to_read > YY_READ_BUF_SIZE ) num_to_read = YY_READ_BUF_SIZE; /* Read in more data. */ YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), (yy_n_chars), num_to_read ); YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); } if ( (yy_n_chars) == 0 ) { if ( number_to_move == YY_MORE_ADJ ) { ret_val = EOB_ACT_END_OF_FILE; yyrestart( yyin ); } else { ret_val = EOB_ACT_LAST_MATCH; YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_EOF_PENDING; } } else ret_val = EOB_ACT_CONTINUE_SCAN; if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { /* Extend the array by 50%, plus the number we really need. */ int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1); YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc( (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size ); if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); /* "- 2" to take care of EOB's */ YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2); } (yy_n_chars) += number_to_move; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; return ret_val; } /* yy_get_previous_state - get the state just before the EOB char was reached */ static yy_state_type yy_get_previous_state (void) { yy_state_type yy_current_state; char *yy_cp; yy_current_state = (yy_start); for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) { YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); if ( yy_accept[yy_current_state] ) { (yy_last_accepting_state) = yy_current_state; (yy_last_accepting_cpos) = yy_cp; } while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) { yy_current_state = (int) yy_def[yy_current_state]; if ( yy_current_state >= 41 ) yy_c = yy_meta[yy_c]; } yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c]; } return yy_current_state; } /* yy_try_NUL_trans - try to make a transition on the NUL character * * synopsis * next_state = yy_try_NUL_trans( current_state ); */ static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) { int yy_is_jam; char *yy_cp = (yy_c_buf_p); YY_CHAR yy_c = 1; if ( yy_accept[yy_current_state] ) { (yy_last_accepting_state) = yy_current_state; (yy_last_accepting_cpos) = yy_cp; } while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) { yy_current_state = (int) yy_def[yy_current_state]; if ( yy_current_state >= 41 ) yy_c = yy_meta[yy_c]; } yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c]; yy_is_jam = (yy_current_state == 40); return yy_is_jam ? 0 : yy_current_state; } #ifndef YY_NO_UNPUT #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput (void) #else static int input (void) #endif { int c; *(yy_c_buf_p) = (yy_hold_char); if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) { /* yy_c_buf_p now points to the character we want to return. * If this occurs *before* the EOB characters, then it's a * valid NUL; if not, then we've hit the end of the buffer. */ if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) /* This was really a NUL. */ *(yy_c_buf_p) = '\0'; else { /* need more input */ int offset = (int) ((yy_c_buf_p) - (yytext_ptr)); ++(yy_c_buf_p); switch ( yy_get_next_buffer( ) ) { case EOB_ACT_LAST_MATCH: /* This happens because yy_g_n_b() * sees that we've accumulated a * token and flags that we need to * try matching the token before * proceeding. But for input(), * there's no matching to consider. * So convert the EOB_ACT_LAST_MATCH * to EOB_ACT_END_OF_FILE. */ /* Reset buffer status. */ yyrestart( yyin ); /*FALLTHROUGH*/ case EOB_ACT_END_OF_FILE: { if ( yywrap( ) ) return 0; if ( ! (yy_did_buffer_switch_on_eof) ) YY_NEW_FILE; #ifdef __cplusplus return yyinput(); #else return input(); #endif } case EOB_ACT_CONTINUE_SCAN: (yy_c_buf_p) = (yytext_ptr) + offset; break; } } } c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ *(yy_c_buf_p) = '\0'; /* preserve yytext */ (yy_hold_char) = *++(yy_c_buf_p); return c; } #endif /* ifndef YY_NO_INPUT */ /** Immediately switch to a different input stream. * @param input_file A readable stream. * * @note This function does not reset the start condition to @c INITIAL . */ void yyrestart (FILE * input_file ) { if ( ! YY_CURRENT_BUFFER ){ yyensure_buffer_stack (); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE ); } yy_init_buffer( YY_CURRENT_BUFFER, input_file ); yy_load_buffer_state( ); } /** Switch to a different input buffer. * @param new_buffer The new input buffer. * */ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) { /* TODO. We should be able to replace this entire function body * with * yypop_buffer_state(); * yypush_buffer_state(new_buffer); */ yyensure_buffer_stack (); if ( YY_CURRENT_BUFFER == new_buffer ) return; if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *(yy_c_buf_p) = (yy_hold_char); YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); } YY_CURRENT_BUFFER_LVALUE = new_buffer; yy_load_buffer_state( ); /* We don't actually know whether we did this switch during * EOF (yywrap()) processing, but the only time this flag * is looked at is after yywrap() is called, so it's safe * to go ahead and always set it. */ (yy_did_buffer_switch_on_eof) = 1; } static void yy_load_buffer_state (void) { (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; (yy_hold_char) = *(yy_c_buf_p); } /** Allocate and initialize an input buffer state. * @param file A readable stream. * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. * * @return the allocated buffer state. */ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) { YY_BUFFER_STATE b; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_buf_size = size; /* yy_ch_buf has to be 2 characters longer than the size given because * we need to put in 2 end-of-buffer characters. */ b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) ); if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_is_our_buffer = 1; yy_init_buffer( b, file ); return b; } /** Destroy the buffer. * @param b a buffer created with yy_create_buffer() * */ void yy_delete_buffer (YY_BUFFER_STATE b ) { if ( ! b ) return; if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; if ( b->yy_is_our_buffer ) yyfree( (void *) b->yy_ch_buf ); yyfree( (void *) b ); } /* Initializes or reinitializes a buffer. * This function is sometimes called more than once on the same buffer, * such as during a yyrestart() or at EOF. */ static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) { int oerrno = errno; yy_flush_buffer( b ); b->yy_input_file = file; b->yy_fill_buffer = 1; /* If b is the current buffer, then yy_init_buffer was _probably_ * called from yyrestart() or through yy_get_next_buffer. * In that case, we don't want to reset the lineno or column. */ if (b != YY_CURRENT_BUFFER){ b->yy_bs_lineno = 1; b->yy_bs_column = 0; } b->yy_is_interactive = 0; errno = oerrno; } /** Discard all buffered characters. On the next scan, YY_INPUT will be called. * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. * */ void yy_flush_buffer (YY_BUFFER_STATE b ) { if ( ! b ) return; b->yy_n_chars = 0; /* We always need two end-of-buffer characters. The first causes * a transition to the end-of-buffer state. The second causes * a jam in that state. */ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; b->yy_buf_pos = &b->yy_ch_buf[0]; b->yy_at_bol = 1; b->yy_buffer_status = YY_BUFFER_NEW; if ( b == YY_CURRENT_BUFFER ) yy_load_buffer_state( ); } /** Pushes the new state onto the stack. The new state becomes * the current state. This function will allocate the stack * if necessary. * @param new_buffer The new state. * */ void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) { if (new_buffer == NULL) return; yyensure_buffer_stack(); /* This block is copied from yy_switch_to_buffer. */ if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *(yy_c_buf_p) = (yy_hold_char); YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); } /* Only push if top exists. Otherwise, replace top. */ if (YY_CURRENT_BUFFER) (yy_buffer_stack_top)++; YY_CURRENT_BUFFER_LVALUE = new_buffer; /* copied from yy_switch_to_buffer. */ yy_load_buffer_state( ); (yy_did_buffer_switch_on_eof) = 1; } /** Removes and deletes the top of the stack, if present. * The next element becomes the new top. * */ void yypop_buffer_state (void) { if (!YY_CURRENT_BUFFER) return; yy_delete_buffer(YY_CURRENT_BUFFER ); YY_CURRENT_BUFFER_LVALUE = NULL; if ((yy_buffer_stack_top) > 0) --(yy_buffer_stack_top); if (YY_CURRENT_BUFFER) { yy_load_buffer_state( ); (yy_did_buffer_switch_on_eof) = 1; } } /* Allocates the stack if it does not exist. * Guarantees space for at least one push. */ static void yyensure_buffer_stack (void) { yy_size_t num_to_alloc; if (!(yy_buffer_stack)) { /* First allocation is just for 2 elements, since we don't know if this * scanner will even need a stack. We use 2 instead of 1 to avoid an * immediate realloc on the next call. */ num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */ (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc (num_to_alloc * sizeof(struct yy_buffer_state*) ); if ( ! (yy_buffer_stack) ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); (yy_buffer_stack_max) = num_to_alloc; (yy_buffer_stack_top) = 0; return; } if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ /* Increase the buffer to prepare for a possible push. */ yy_size_t grow_size = 8 /* arbitrary grow size */; num_to_alloc = (yy_buffer_stack_max) + grow_size; (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc ((yy_buffer_stack), num_to_alloc * sizeof(struct yy_buffer_state*) ); if ( ! (yy_buffer_stack) ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); /* zero only the new slots.*/ memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); (yy_buffer_stack_max) = num_to_alloc; } } /** Setup the input buffer state to scan directly from a user-specified character buffer. * @param base the character buffer * @param size the size in bytes of the character buffer * * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size ) { YY_BUFFER_STATE b; if ( size < 2 || base[size-2] != YY_END_OF_BUFFER_CHAR || base[size-1] != YY_END_OF_BUFFER_CHAR ) /* They forgot to leave room for the EOB's. */ return NULL; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); b->yy_buf_size = (int) (size - 2); /* "- 2" to take care of EOB's */ b->yy_buf_pos = b->yy_ch_buf = base; b->yy_is_our_buffer = 0; b->yy_input_file = NULL; b->yy_n_chars = b->yy_buf_size; b->yy_is_interactive = 0; b->yy_at_bol = 1; b->yy_fill_buffer = 0; b->yy_buffer_status = YY_BUFFER_NEW; yy_switch_to_buffer( b ); return b; } /** Setup the input buffer state to scan a string. The next call to yylex() will * scan from a @e copy of @a str. * @param yystr a NUL-terminated string to scan * * @return the newly allocated buffer state object. * @note If you want to scan bytes that may contain NUL values, then use * yy_scan_bytes() instead. */ YY_BUFFER_STATE yy_scan_string (const char * yystr ) { return yy_scan_bytes( yystr, (int) strlen(yystr) ); } /** Setup the input buffer state to scan the given bytes. The next call to yylex() will * scan from a @e copy of @a bytes. * @param yybytes the byte buffer to scan * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. * * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len ) { YY_BUFFER_STATE b; char *buf; yy_size_t n; int i; /* Get memory for full buffer, including space for trailing EOB's. */ n = (yy_size_t) (_yybytes_len + 2); buf = (char *) yyalloc( n ); if ( ! buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); for ( i = 0; i < _yybytes_len; ++i ) buf[i] = yybytes[i]; buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; b = yy_scan_buffer( buf, n ); if ( ! b ) YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); /* It's okay to grow etc. this buffer, and we should throw it * away when we're done. */ b->yy_is_our_buffer = 1; return b; } #ifndef YY_EXIT_FAILURE #define YY_EXIT_FAILURE 2 #endif static void yynoreturn yy_fatal_error (const char* msg ) { fprintf( stderr, "%s\n", msg ); exit( YY_EXIT_FAILURE ); } /* Redefine yyless() so it works in section 3 code. */ #undef yyless #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ yytext[yyleng] = (yy_hold_char); \ (yy_c_buf_p) = yytext + yyless_macro_arg; \ (yy_hold_char) = *(yy_c_buf_p); \ *(yy_c_buf_p) = '\0'; \ yyleng = yyless_macro_arg; \ } \ while ( 0 ) /* Accessor methods (get/set functions) to struct members. */ /** Get the current line number. * */ int yyget_lineno (void) { return yylineno; } /** Get the input stream. * */ FILE *yyget_in (void) { return yyin; } /** Get the output stream. * */ FILE *yyget_out (void) { return yyout; } /** Get the length of the current token. * */ int yyget_leng (void) { return yyleng; } /** Get the current token. * */ char *yyget_text (void) { return yytext; } /** Set the current line number. * @param _line_number line number * */ void yyset_lineno (int _line_number ) { yylineno = _line_number; } /** Set the input stream. This does not discard the current * input buffer. * @param _in_str A readable stream. * * @see yy_switch_to_buffer */ void yyset_in (FILE * _in_str ) { yyin = _in_str ; } void yyset_out (FILE * _out_str ) { yyout = _out_str ; } int yyget_debug (void) { return yy_flex_debug; } void yyset_debug (int _bdebug ) { yy_flex_debug = _bdebug ; } static int yy_init_globals (void) { /* Initialization is the same as for the non-reentrant scanner. * This function is called from yylex_destroy(), so don't allocate here. */ (yy_buffer_stack) = NULL; (yy_buffer_stack_top) = 0; (yy_buffer_stack_max) = 0; (yy_c_buf_p) = NULL; (yy_init) = 0; (yy_start) = 0; /* Defined in main.c */ #ifdef YY_STDINIT yyin = stdin; yyout = stdout; #else yyin = NULL; yyout = NULL; #endif /* For future reference: Set errno on error, since we are called by * yylex_init() */ return 0; } /* yylex_destroy is for both reentrant and non-reentrant scanners. */ int yylex_destroy (void) { /* Pop the buffer stack, destroying each element. */ while(YY_CURRENT_BUFFER){ yy_delete_buffer( YY_CURRENT_BUFFER ); YY_CURRENT_BUFFER_LVALUE = NULL; yypop_buffer_state(); } /* Destroy the stack itself. */ yyfree((yy_buffer_stack) ); (yy_buffer_stack) = NULL; /* Reset the globals. This is important in a non-reentrant scanner so the next time * yylex() is called, initialization will occur. */ yy_init_globals( ); return 0; } /* * Internal utility routines. */ #ifndef yytext_ptr static void yy_flex_strncpy (char* s1, const char * s2, int n ) { int i; for ( i = 0; i < n; ++i ) s1[i] = s2[i]; } #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen (const char * s ) { int n; for ( n = 0; s[n]; ++n ) ; return n; } #endif void *yyalloc (yy_size_t size ) { return malloc(size); } void *yyrealloc (void * ptr, yy_size_t size ) { /* The cast to (char *) in the following accommodates both * implementations that use char* generic pointers, and those * that use void* generic pointers. It works with the latter * because both ANSI C and C++ allow castless assignment from * any pointer type to void*, and deal with argument conversions * as though doing an assignment. */ return realloc(ptr, size); } void yyfree (void * ptr ) { free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ } #define YYTABLES_NAME "yytables" #line 108 "guc-file.l" /* * Exported function to read and process the configuration file. The * parameter indicates in what context the file is being read --- either * postmaster startup (including standalone-backend startup) or SIGHUP. * All options mentioned in the configuration file are set to new values. * If a hard error occurs, no values will be changed. (There can also be * errors that prevent just one value from being changed.) */ void ProcessConfigFile(GucContext context) { int elevel; MemoryContext config_cxt; MemoryContext caller_cxt; /* * Config files are processed on startup (by the postmaster only) and on * SIGHUP (by the postmaster and its children) */ Assert((context == PGC_POSTMASTER && !IsUnderPostmaster) || context == PGC_SIGHUP); /* * To avoid cluttering the log, only the postmaster bleats loudly about * problems with the config file. */ elevel = IsUnderPostmaster ? DEBUG2 : LOG; /* * This function is usually called within a process-lifespan memory * context. To ensure that any memory leaked during GUC processing does * not accumulate across repeated SIGHUP cycles, do the work in a private * context that we can free at exit. */ config_cxt = AllocSetContextCreate(CurrentMemoryContext, "config file processing", ALLOCSET_DEFAULT_SIZES); caller_cxt = MemoryContextSwitchTo(config_cxt); /* * Read and apply the config file. We don't need to examine the result. */ (void) ProcessConfigFileInternal(context, true, elevel); /* Clean up */ MemoryContextSwitchTo(caller_cxt); MemoryContextDelete(config_cxt); } /* * This function handles both actual config file (re)loads and execution of * show_all_file_settings() (i.e., the pg_file_settings view). In the latter * case we don't apply any of the settings, but we make all the usual validity * checks, and we return the ConfigVariable list so that it can be printed out * by show_all_file_settings(). */ static ConfigVariable * ProcessConfigFileInternal(GucContext context, bool applySettings, int elevel) { bool error = false; bool applying = false; const char *ConfFileWithError; ConfigVariable *item, *head, *tail; int i; /* Parse the main config file into a list of option names and values */ ConfFileWithError = ConfigFileName; head = tail = NULL; if (!ParseConfigFile(ConfigFileName, true, NULL, 0, 0, elevel, &head, &tail)) { /* Syntax error(s) detected in the file, so bail out */ error = true; goto bail_out; } /* * Parse the PG_AUTOCONF_FILENAME file, if present, after the main file to * replace any parameters set by ALTER SYSTEM command. Because this file * is in the data directory, we can't read it until the DataDir has been * set. */ if (DataDir) { if (!ParseConfigFile(PG_AUTOCONF_FILENAME, false, NULL, 0, 0, elevel, &head, &tail)) { /* Syntax error(s) detected in the file, so bail out */ error = true; ConfFileWithError = PG_AUTOCONF_FILENAME; goto bail_out; } } else { /* * If DataDir is not set, the PG_AUTOCONF_FILENAME file cannot be * read. In this case, we don't want to accept any settings but * data_directory from postgresql.conf, because they might be * overwritten with settings in the PG_AUTOCONF_FILENAME file which * will be read later. OTOH, since data_directory isn't allowed in the * PG_AUTOCONF_FILENAME file, it will never be overwritten later. */ ConfigVariable *newlist = NULL; /* * Prune all items except the last "data_directory" from the list. */ for (item = head; item; item = item->next) { if (!item->ignore && strcmp(item->name, "data_directory") == 0) newlist = item; } if (newlist) newlist->next = NULL; head = tail = newlist; /* * Quick exit if data_directory is not present in file. * * We need not do any further processing, in particular we don't set * PgReloadTime; that will be set soon by subsequent full loading of * the config file. */ if (head == NULL) goto bail_out; } /* * Mark all extant GUC variables as not present in the config file. We * need this so that we can tell below which ones have been removed from * the file since we last processed it. */ for (i = 0; i < num_guc_variables; i++) { struct config_generic *gconf = guc_variables[i]; gconf->status &= ~GUC_IS_IN_FILE; } /* * Check if all the supplied option names are valid, as an additional * quasi-syntactic check on the validity of the config file. It is * important that the postmaster and all backends agree on the results of * this phase, else we will have strange inconsistencies about which * processes accept a config file update and which don't. Hence, unknown * custom variable names have to be accepted without complaint. For the * same reason, we don't attempt to validate the options' values here. * * In addition, the GUC_IS_IN_FILE flag is set on each existing GUC * variable mentioned in the file; and we detect duplicate entries in the * file and mark the earlier occurrences as ignorable. */ for (item = head; item; item = item->next) { struct config_generic *record; /* Ignore anything already marked as ignorable */ if (item->ignore) continue; /* * Try to find the variable; but do not create a custom placeholder if * it's not there already. */ record = find_option(item->name, false, elevel); if (record) { /* If it's already marked, then this is a duplicate entry */ if (record->status & GUC_IS_IN_FILE) { /* * Mark the earlier occurrence(s) as dead/ignorable. We could * avoid the O(N^2) behavior here with some additional state, * but it seems unlikely to be worth the trouble. */ ConfigVariable *pitem; for (pitem = head; pitem != item; pitem = pitem->next) { if (!pitem->ignore && strcmp(pitem->name, item->name) == 0) pitem->ignore = true; } } /* Now mark it as present in file */ record->status |= GUC_IS_IN_FILE; } else if (strchr(item->name, GUC_QUALIFIER_SEPARATOR) == NULL) { /* Invalid non-custom variable, so complain */ ereport(elevel, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\" in file \"%s\" line %u", item->name, item->filename, item->sourceline))); item->errmsg = pstrdup("unrecognized configuration parameter"); error = true; ConfFileWithError = item->filename; } } /* * If we've detected any errors so far, we don't want to risk applying any * changes. */ if (error) goto bail_out; /* Otherwise, set flag that we're beginning to apply changes */ applying = true; /* * Check for variables having been removed from the config file, and * revert their reset values (and perhaps also effective values) to the * boot-time defaults. If such a variable can't be changed after startup, * report that and continue. */ for (i = 0; i < num_guc_variables; i++) { struct config_generic *gconf = guc_variables[i]; GucStack *stack; if (gconf->reset_source != PGC_S_FILE || (gconf->status & GUC_IS_IN_FILE)) continue; if (gconf->context < PGC_SIGHUP) { /* The removal can't be effective without a restart */ gconf->status |= GUC_PENDING_RESTART; ereport(elevel, (errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM), errmsg("parameter \"%s\" cannot be changed without restarting the server", gconf->name))); record_config_file_error(psprintf("parameter \"%s\" cannot be changed without restarting the server", gconf->name), NULL, 0, &head, &tail); error = true; continue; } /* No more to do if we're just doing show_all_file_settings() */ if (!applySettings) continue; /* * Reset any "file" sources to "default", else set_config_option will * not override those settings. */ if (gconf->reset_source == PGC_S_FILE) gconf->reset_source = PGC_S_DEFAULT; if (gconf->source == PGC_S_FILE) gconf->source = PGC_S_DEFAULT; for (stack = gconf->stack; stack; stack = stack->prev) { if (stack->source == PGC_S_FILE) stack->source = PGC_S_DEFAULT; } /* Now we can re-apply the wired-in default (i.e., the boot_val) */ if (set_config_option(gconf->name, NULL, context, PGC_S_DEFAULT, GUC_ACTION_SET, true, 0, false) > 0) { /* Log the change if appropriate */ if (context == PGC_SIGHUP) ereport(elevel, (errmsg("parameter \"%s\" removed from configuration file, reset to default", gconf->name))); } } /* * Restore any variables determined by environment variables or * dynamically-computed defaults. This is a no-op except in the case * where one of these had been in the config file and is now removed. * * In particular, we *must not* do this during the postmaster's initial * loading of the file, since the timezone functions in particular should * be run only after initialization is complete. * * XXX this is an unmaintainable crock, because we have to know how to set * (or at least what to call to set) every variable that could potentially * have PGC_S_DYNAMIC_DEFAULT or PGC_S_ENV_VAR source. However, there's no * time to redesign it for 9.1. */ if (context == PGC_SIGHUP && applySettings) { InitializeGUCOptionsFromEnvironment(); pg_timezone_abbrev_initialize(); /* this selects SQL_ASCII in processes not connected to a database */ SetConfigOption("client_encoding", GetDatabaseEncodingName(), PGC_BACKEND, PGC_S_DYNAMIC_DEFAULT); } /* * Now apply the values from the config file. */ for (item = head; item; item = item->next) { char *pre_value = NULL; int scres; /* Ignore anything marked as ignorable */ if (item->ignore) continue; /* In SIGHUP cases in the postmaster, we want to report changes */ if (context == PGC_SIGHUP && applySettings && !IsUnderPostmaster) { const char *preval = GetConfigOption(item->name, true, false); /* If option doesn't exist yet or is NULL, treat as empty string */ if (!preval) preval = ""; /* must dup, else might have dangling pointer below */ pre_value = pstrdup(preval); } scres = set_config_option(item->name, item->value, context, PGC_S_FILE, GUC_ACTION_SET, applySettings, 0, false); if (scres > 0) { /* variable was updated, so log the change if appropriate */ if (pre_value) { const char *post_value = GetConfigOption(item->name, true, false); if (!post_value) post_value = ""; if (strcmp(pre_value, post_value) != 0) ereport(elevel, (errmsg("parameter \"%s\" changed to \"%s\"", item->name, item->value))); } item->applied = true; } else if (scres == 0) { error = true; item->errmsg = pstrdup("setting could not be applied"); ConfFileWithError = item->filename; } else { /* no error, but variable's active value was not changed */ item->applied = true; } /* * We should update source location unless there was an error, since * even if the active value didn't change, the reset value might have. * (In the postmaster, there won't be a difference, but it does matter * in backends.) */ if (scres != 0 && applySettings) set_config_sourcefile(item->name, item->filename, item->sourceline); if (pre_value) pfree(pre_value); } /* Remember when we last successfully loaded the config file. */ if (applySettings) PgReloadTime = GetCurrentTimestamp(); bail_out: if (error && applySettings) { /* During postmaster startup, any error is fatal */ if (context == PGC_POSTMASTER) ereport(ERROR, (errcode(ERRCODE_CONFIG_FILE_ERROR), errmsg("configuration file \"%s\" contains errors", ConfFileWithError))); else if (applying) ereport(elevel, (errcode(ERRCODE_CONFIG_FILE_ERROR), errmsg("configuration file \"%s\" contains errors; unaffected changes were applied", ConfFileWithError))); else ereport(elevel, (errcode(ERRCODE_CONFIG_FILE_ERROR), errmsg("configuration file \"%s\" contains errors; no changes were applied", ConfFileWithError))); } /* Successful or otherwise, return the collected data list */ return head; } /* * Given a configuration file or directory location that may be a relative * path, return an absolute one. We consider the location to be relative to * the directory holding the calling file, or to DataDir if no calling file. */ static char * AbsoluteConfigLocation(const char *location, const char *calling_file) { char abs_path[MAXPGPATH]; if (is_absolute_path(location)) return pstrdup(location); else { if (calling_file != NULL) { strlcpy(abs_path, calling_file, sizeof(abs_path)); get_parent_directory(abs_path); join_path_components(abs_path, abs_path, location); canonicalize_path(abs_path); } else { AssertState(DataDir); join_path_components(abs_path, DataDir, location); canonicalize_path(abs_path); } return pstrdup(abs_path); } } /* * Read and parse a single configuration file. This function recurses * to handle "include" directives. * * If "strict" is true, treat failure to open the config file as an error, * otherwise just skip the file. * * calling_file/calling_lineno identify the source of the request. * Pass NULL/0 if not recursing from an inclusion request. * * See ParseConfigFp for further details. This one merely adds opening the * config file rather than working from a caller-supplied file descriptor, * and absolute-ifying the path name if necessary. */ bool ParseConfigFile(const char *config_file, bool strict, const char *calling_file, int calling_lineno, int depth, int elevel, ConfigVariable **head_p, ConfigVariable **tail_p) { char *abs_path; bool OK = true; FILE *fp; /* * Reject file name that is all-blank (including empty), as that leads to * confusion --- we'd try to read the containing directory as a file. */ if (strspn(config_file, " \t\r\n") == strlen(config_file)) { ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("empty configuration file name: \"%s\"", config_file))); record_config_file_error("empty configuration file name", calling_file, calling_lineno, head_p, tail_p); return false; } /* * Reject too-deep include nesting depth. This is just a safety check to * avoid dumping core due to stack overflow if an include file loops back * to itself. The maximum nesting depth is pretty arbitrary. */ if (depth > 10) { ereport(elevel, (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), errmsg("could not open configuration file \"%s\": maximum nesting depth exceeded", config_file))); record_config_file_error("nesting depth exceeded", calling_file, calling_lineno, head_p, tail_p); return false; } abs_path = AbsoluteConfigLocation(config_file, calling_file); /* * Reject direct recursion. Indirect recursion is also possible, but it's * harder to detect and so doesn't seem worth the trouble. (We test at * this step because the canonicalization done by AbsoluteConfigLocation * makes it more likely that a simple strcmp comparison will match.) */ if (calling_file && strcmp(abs_path, calling_file) == 0) { ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("configuration file recursion in \"%s\"", calling_file))); record_config_file_error("configuration file recursion", calling_file, calling_lineno, head_p, tail_p); pfree(abs_path); return false; } fp = AllocateFile(abs_path, "r"); if (!fp) { if (strict) { ereport(elevel, (errcode_for_file_access(), errmsg("could not open configuration file \"%s\": %m", abs_path))); record_config_file_error(psprintf("could not open file \"%s\"", abs_path), calling_file, calling_lineno, head_p, tail_p); OK = false; } else { ereport(LOG, (errmsg("skipping missing configuration file \"%s\"", abs_path))); } goto cleanup; } OK = ParseConfigFp(fp, abs_path, depth, elevel, head_p, tail_p); cleanup: if (fp) FreeFile(fp); pfree(abs_path); return OK; } /* * Capture an error message in the ConfigVariable list returned by * config file parsing. */ static void record_config_file_error(const char *errmsg, const char *config_file, int lineno, ConfigVariable **head_p, ConfigVariable **tail_p) { ConfigVariable *item; item = palloc(sizeof *item); item->name = NULL; item->value = NULL; item->errmsg = pstrdup(errmsg); item->filename = config_file ? pstrdup(config_file) : NULL; item->sourceline = lineno; item->ignore = true; item->applied = false; item->next = NULL; if (*head_p == NULL) *head_p = item; else (*tail_p)->next = item; *tail_p = item; } /* * Flex fatal errors bring us here. Stash the error message and jump back to * ParseConfigFp(). Assume all msg arguments point to string constants; this * holds for flex 2.5.31 (earliest we support) and flex 2.5.35 (latest as of * this writing). Otherwise, we would need to copy the message. * * We return "int" since this takes the place of calls to fprintf(). */ static int GUC_flex_fatal(const char *msg) { GUC_flex_fatal_errmsg = msg; siglongjmp(*GUC_flex_fatal_jmp, 1); return 0; /* keep compiler quiet */ } /* * Read and parse a single configuration file. This function recurses * to handle "include" directives. * * Input parameters: * fp: file pointer from AllocateFile for the configuration file to parse * config_file: absolute or relative path name of the configuration file * depth: recursion depth (should be 0 in the outermost call) * elevel: error logging level to use * Input/Output parameters: * head_p, tail_p: head and tail of linked list of name/value pairs * * *head_p and *tail_p must be initialized, either to NULL or valid pointers * to a ConfigVariable list, before calling the outer recursion level. Any * name-value pairs read from the input file(s) will be appended to the list. * Error reports will also be appended to the list, if elevel < ERROR. * * Returns TRUE if successful, FALSE if an error occurred. The error has * already been ereport'd, it is only necessary for the caller to clean up * its own state and release the ConfigVariable list. * * Note: if elevel >= ERROR then an error will not return control to the * caller, so there is no need to check the return value in that case. * * Note: this function is used to parse not only postgresql.conf, but * various other configuration files that use the same "name = value" * syntax. Hence, do not do anything here or in the subsidiary routines * ParseConfigFile/ParseConfigDirectory that assumes we are processing * GUCs specifically. */ bool ParseConfigFp(FILE *fp, const char *config_file, int depth, int elevel, ConfigVariable **head_p, ConfigVariable **tail_p) { volatile bool OK = true; unsigned int save_ConfigFileLineno = ConfigFileLineno; sigjmp_buf *save_GUC_flex_fatal_jmp = GUC_flex_fatal_jmp; sigjmp_buf flex_fatal_jmp; volatile YY_BUFFER_STATE lex_buffer = NULL; int errorcount; int token; if (sigsetjmp(flex_fatal_jmp, 1) == 0) GUC_flex_fatal_jmp = &flex_fatal_jmp; else { /* * Regain control after a fatal, internal flex error. It may have * corrupted parser state. Consequently, abandon the file, but trust * that the state remains sane enough for yy_delete_buffer(). */ elog(elevel, "%s at file \"%s\" line %u", GUC_flex_fatal_errmsg, config_file, ConfigFileLineno); record_config_file_error(GUC_flex_fatal_errmsg, config_file, ConfigFileLineno, head_p, tail_p); OK = false; goto cleanup; } /* * Parse */ ConfigFileLineno = 1; errorcount = 0; lex_buffer = yy_create_buffer(fp, YY_BUF_SIZE); yy_switch_to_buffer(lex_buffer); /* This loop iterates once per logical line */ while ((token = yylex())) { char *opt_name = NULL; char *opt_value = NULL; ConfigVariable *item; if (token == GUC_EOL) /* empty or comment line */ continue; /* first token on line is option name */ if (token != GUC_ID && token != GUC_QUALIFIED_ID) goto parse_error; opt_name = pstrdup(yytext); /* next we have an optional equal sign; discard if present */ token = yylex(); if (token == GUC_EQUALS) token = yylex(); /* now we must have the option value */ if (token != GUC_ID && token != GUC_STRING && token != GUC_INTEGER && token != GUC_REAL && token != GUC_UNQUOTED_STRING) goto parse_error; if (token == GUC_STRING) /* strip quotes and escapes */ opt_value = GUC_scanstr(yytext); else opt_value = pstrdup(yytext); /* now we'd like an end of line, or possibly EOF */ token = yylex(); if (token != GUC_EOL) { if (token != 0) goto parse_error; /* treat EOF like \n for line numbering purposes, cf bug 4752 */ ConfigFileLineno++; } /* OK, process the option name and value */ if (guc_name_compare(opt_name, "include_dir") == 0) { /* * An include_dir directive isn't a variable and should be * processed immediately. */ if (!ParseConfigDirectory(opt_value, config_file, ConfigFileLineno - 1, depth + 1, elevel, head_p, tail_p)) OK = false; yy_switch_to_buffer(lex_buffer); pfree(opt_name); pfree(opt_value); } else if (guc_name_compare(opt_name, "include_if_exists") == 0) { /* * An include_if_exists directive isn't a variable and should be * processed immediately. */ if (!ParseConfigFile(opt_value, false, config_file, ConfigFileLineno - 1, depth + 1, elevel, head_p, tail_p)) OK = false; yy_switch_to_buffer(lex_buffer); pfree(opt_name); pfree(opt_value); } else if (guc_name_compare(opt_name, "include") == 0) { /* * An include directive isn't a variable and should be processed * immediately. */ if (!ParseConfigFile(opt_value, true, config_file, ConfigFileLineno - 1, depth + 1, elevel, head_p, tail_p)) OK = false; yy_switch_to_buffer(lex_buffer); pfree(opt_name); pfree(opt_value); } else { /* ordinary variable, append to list */ item = palloc(sizeof *item); item->name = opt_name; item->value = opt_value; item->errmsg = NULL; item->filename = pstrdup(config_file); item->sourceline = ConfigFileLineno - 1; item->ignore = false; item->applied = false; item->next = NULL; if (*head_p == NULL) *head_p = item; else (*tail_p)->next = item; *tail_p = item; } /* break out of loop if read EOF, else loop for next line */ if (token == 0) break; continue; parse_error: /* release storage if we allocated any on this line */ if (opt_name) pfree(opt_name); if (opt_value) pfree(opt_value); /* report the error */ if (token == GUC_EOL || token == 0) { ereport(elevel, (errcode(ERRCODE_SYNTAX_ERROR), errmsg("syntax error in file \"%s\" line %u, near end of line", config_file, ConfigFileLineno - 1))); record_config_file_error("syntax error", config_file, ConfigFileLineno - 1, head_p, tail_p); } else { ereport(elevel, (errcode(ERRCODE_SYNTAX_ERROR), errmsg("syntax error in file \"%s\" line %u, near token \"%s\"", config_file, ConfigFileLineno, yytext))); record_config_file_error("syntax error", config_file, ConfigFileLineno, head_p, tail_p); } OK = false; errorcount++; /* * To avoid producing too much noise when fed a totally bogus file, * give up after 100 syntax errors per file (an arbitrary number). * Also, if we're only logging the errors at DEBUG level anyway, might * as well give up immediately. (This prevents postmaster children * from bloating the logs with duplicate complaints.) */ if (errorcount >= 100 || elevel <= DEBUG1) { ereport(elevel, (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), errmsg("too many syntax errors found, abandoning file \"%s\"", config_file))); break; } /* resync to next end-of-line or EOF */ while (token != GUC_EOL && token != 0) token = yylex(); /* break out of loop on EOF */ if (token == 0) break; } cleanup: yy_delete_buffer(lex_buffer); /* Each recursion level must save and restore these static variables. */ ConfigFileLineno = save_ConfigFileLineno; GUC_flex_fatal_jmp = save_GUC_flex_fatal_jmp; return OK; } /* * Read and parse all config files in a subdirectory in alphabetical order * * includedir is the absolute or relative path to the subdirectory to scan. * * calling_file/calling_lineno identify the source of the request. * Pass NULL/0 if not recursing from an inclusion request. * * See ParseConfigFp for further details. */ bool ParseConfigDirectory(const char *includedir, const char *calling_file, int calling_lineno, int depth, int elevel, ConfigVariable **head_p, ConfigVariable **tail_p) { char *directory; DIR *d; struct dirent *de; char **filenames; int num_filenames; int size_filenames; bool status; /* * Reject directory name that is all-blank (including empty), as that * leads to confusion --- we'd read the containing directory, typically * resulting in recursive inclusion of the same file(s). */ if (strspn(includedir, " \t\r\n") == strlen(includedir)) { ereport(elevel, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("empty configuration directory name: \"%s\"", includedir))); record_config_file_error("empty configuration directory name", calling_file, calling_lineno, head_p, tail_p); return false; } /* * We don't check for recursion or too-deep nesting depth here; the * subsequent calls to ParseConfigFile will take care of that. */ directory = AbsoluteConfigLocation(includedir, calling_file); d = AllocateDir(directory); if (d == NULL) { ereport(elevel, (errcode_for_file_access(), errmsg("could not open configuration directory \"%s\": %m", directory))); record_config_file_error(psprintf("could not open directory \"%s\"", directory), calling_file, calling_lineno, head_p, tail_p); status = false; goto cleanup; } /* * Read the directory and put the filenames in an array, so we can sort * them prior to processing the contents. */ size_filenames = 32; filenames = (char **) palloc(size_filenames * sizeof(char *)); num_filenames = 0; while ((de = ReadDir(d, directory)) != NULL) { struct stat st; char filename[MAXPGPATH]; /* * Only parse files with names ending in ".conf". Explicitly reject * files starting with ".". This excludes things like "." and "..", * as well as typical hidden files, backup files, and editor debris. */ if (strlen(de->d_name) < 6) continue; if (de->d_name[0] == '.') continue; if (strcmp(de->d_name + strlen(de->d_name) - 5, ".conf") != 0) continue; join_path_components(filename, directory, de->d_name); canonicalize_path(filename); if (stat(filename, &st) == 0) { if (!S_ISDIR(st.st_mode)) { /* Add file to array, increasing its size in blocks of 32 */ if (num_filenames >= size_filenames) { size_filenames += 32; filenames = (char **) repalloc(filenames, size_filenames * sizeof(char *)); } filenames[num_filenames] = pstrdup(filename); num_filenames++; } } else { /* * stat does not care about permissions, so the most likely reason * a file can't be accessed now is if it was removed between the * directory listing and now. */ ereport(elevel, (errcode_for_file_access(), errmsg("could not stat file \"%s\": %m", filename))); record_config_file_error(psprintf("could not stat file \"%s\"", filename), calling_file, calling_lineno, head_p, tail_p); status = false; goto cleanup; } } if (num_filenames > 0) { int i; qsort(filenames, num_filenames, sizeof(char *), pg_qsort_strcmp); for (i = 0; i < num_filenames; i++) { if (!ParseConfigFile(filenames[i], true, calling_file, calling_lineno, depth, elevel, head_p, tail_p)) { status = false; goto cleanup; } } } status = true; cleanup: if (d) FreeDir(d); pfree(directory); return status; } /* * Free a list of ConfigVariables, including the names and the values */ void FreeConfigVariables(ConfigVariable *list) { ConfigVariable *item; item = list; while (item) { ConfigVariable *next = item->next; FreeConfigVariable(item); item = next; } } /* * Free a single ConfigVariable */ static void FreeConfigVariable(ConfigVariable *item) { if (item->name) pfree(item->name); if (item->value) pfree(item->value); if (item->errmsg) pfree(item->errmsg); if (item->filename) pfree(item->filename); pfree(item); } /* * scanstr * * Strip the quotes surrounding the given string, and collapse any embedded * '' sequences and backslash escapes. * * the string returned is palloc'd and should eventually be pfree'd by the * caller. */ static char * GUC_scanstr(const char *s) { char *newStr; int len, i, j; Assert(s != NULL && s[0] == '\''); len = strlen(s); Assert(len >= 2); Assert(s[len - 1] == '\''); /* Skip the leading quote; we'll handle the trailing quote below */ s++, len--; /* Since len still includes trailing quote, this is enough space */ newStr = palloc(len); for (i = 0, j = 0; i < len; i++) { if (s[i] == '\\') { i++; switch (s[i]) { case 'b': newStr[j] = '\b'; break; case 'f': newStr[j] = '\f'; break; case 'n': newStr[j] = '\n'; break; case 'r': newStr[j] = '\r'; break; case 't': newStr[j] = '\t'; break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': { int k; long octVal = 0; for (k = 0; s[i + k] >= '0' && s[i + k] <= '7' && k < 3; k++) octVal = (octVal << 3) + (s[i + k] - '0'); i += k - 1; newStr[j] = ((char) octVal); } break; default: newStr[j] = s[i]; break; } /* switch */ } else if (s[i] == '\'' && s[i + 1] == '\'') { /* doubled quote becomes just one quote */ newStr[j] = s[++i]; } else newStr[j] = s[i]; j++; } /* We copied the ending quote to newStr, so replace with \0 */ Assert(j > 0 && j <= len); newStr[--j] = '\0'; return newStr; }