init
This commit is contained in:
blue-lemon0104
555
db_include/port.h
Executable file
555
db_include/port.h
Executable file
@@ -0,0 +1,555 @@
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/*-------------------------------------------------------------------------
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*
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* port.h
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* Header for src/port/ compatibility functions.
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/port.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_PORT_H
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#define PG_PORT_H
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#include <ctype.h>
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#include <netdb.h>
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#include <pwd.h>
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/*
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* Windows has enough specialized port stuff that we push most of it off
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* into another file.
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* Note: Some CYGWIN includes might #define WIN32.
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*/
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#if defined(WIN32) && !defined(__CYGWIN__)
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#include "port/win32_port.h"
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#endif
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/* socket has a different definition on WIN32 */
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#ifndef WIN32
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typedef int pgsocket;
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#define PGINVALID_SOCKET (-1)
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#else
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typedef SOCKET pgsocket;
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#define PGINVALID_SOCKET INVALID_SOCKET
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#endif
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/* non-blocking */
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extern bool pg_set_noblock(pgsocket sock);
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extern bool pg_set_block(pgsocket sock);
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/* Portable path handling for Unix/Win32 (in path.c) */
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extern bool has_drive_prefix(const char *filename);
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extern char *first_dir_separator(const char *filename);
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extern char *last_dir_separator(const char *filename);
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extern char *first_path_var_separator(const char *pathlist);
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extern void join_path_components(char *ret_path,
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const char *head, const char *tail);
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extern void canonicalize_path(char *path);
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extern void make_native_path(char *path);
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extern void cleanup_path(char *path);
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extern bool path_contains_parent_reference(const char *path);
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extern bool path_is_relative_and_below_cwd(const char *path);
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extern bool path_is_prefix_of_path(const char *path1, const char *path2);
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extern char *make_absolute_path(const char *path);
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extern const char *get_progname(const char *argv0);
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extern void get_share_path(const char *my_exec_path, char *ret_path);
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extern void get_etc_path(const char *my_exec_path, char *ret_path);
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extern void get_include_path(const char *my_exec_path, char *ret_path);
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extern void get_pkginclude_path(const char *my_exec_path, char *ret_path);
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extern void get_includeserver_path(const char *my_exec_path, char *ret_path);
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extern void get_lib_path(const char *my_exec_path, char *ret_path);
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extern void get_pkglib_path(const char *my_exec_path, char *ret_path);
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extern void get_locale_path(const char *my_exec_path, char *ret_path);
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extern void get_doc_path(const char *my_exec_path, char *ret_path);
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extern void get_html_path(const char *my_exec_path, char *ret_path);
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extern void get_man_path(const char *my_exec_path, char *ret_path);
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extern bool get_home_path(char *ret_path);
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extern void get_parent_directory(char *path);
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/* common/pgfnames.c */
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extern char **pgfnames(const char *path);
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extern void pgfnames_cleanup(char **filenames);
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/*
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* is_absolute_path
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*
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* By making this a macro we avoid needing to include path.c in libpq.
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*/
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#ifndef WIN32
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#define IS_DIR_SEP(ch) ((ch) == '/')
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#define is_absolute_path(filename) \
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( \
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IS_DIR_SEP((filename)[0]) \
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)
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#else
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#define IS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\')
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/* See path_is_relative_and_below_cwd() for how we handle 'E:abc'. */
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#define is_absolute_path(filename) \
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( \
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IS_DIR_SEP((filename)[0]) || \
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(isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \
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IS_DIR_SEP((filename)[2])) \
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)
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#endif
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/*
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* This macro provides a centralized list of all errnos that identify
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* hard failure of a previously-established network connection.
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* The macro is intended to be used in a switch statement, in the form
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* "case ALL_CONNECTION_FAILURE_ERRNOS:".
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*
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||||
* Note: this groups EPIPE and ECONNRESET, which we take to indicate a
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* probable server crash, with other errors that indicate loss of network
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* connectivity without proving much about the server's state. Places that
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* are actually reporting errors typically single out EPIPE and ECONNRESET,
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* while allowing the network failures to be reported generically.
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*/
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#define ALL_CONNECTION_FAILURE_ERRNOS \
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EPIPE: \
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case ECONNRESET: \
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case ECONNABORTED: \
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case EHOSTDOWN: \
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case EHOSTUNREACH: \
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case ENETDOWN: \
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case ENETRESET: \
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case ENETUNREACH
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/* Portable locale initialization (in exec.c) */
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extern void set_pglocale_pgservice(const char *argv0, const char *app);
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/* Portable way to find and execute binaries (in exec.c) */
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extern int validate_exec(const char *path);
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extern int find_my_exec(const char *argv0, char *retpath);
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extern int find_other_exec(const char *argv0, const char *target,
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const char *versionstr, char *retpath);
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extern char *pipe_read_line(char *cmd, char *line, int maxsize);
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/* Doesn't belong here, but this is used with find_other_exec(), so... */
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#define PG_BACKEND_VERSIONSTR "postgres (PostgreSQL) " PG_VERSION "\n"
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#if defined(WIN32) || defined(__CYGWIN__)
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#define EXE ".exe"
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#else
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#define EXE ""
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#endif
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#if defined(WIN32) && !defined(__CYGWIN__)
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#define DEVNULL "nul"
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#else
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#define DEVNULL "/dev/null"
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#endif
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/* Portable delay handling */
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extern void pg_usleep(long microsec);
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/* Portable SQL-like case-independent comparisons and conversions */
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extern int pg_strcasecmp(const char *s1, const char *s2);
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extern int pg_strncasecmp(const char *s1, const char *s2, size_t n);
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extern unsigned char pg_toupper(unsigned char ch);
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extern unsigned char pg_tolower(unsigned char ch);
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extern unsigned char pg_ascii_toupper(unsigned char ch);
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extern unsigned char pg_ascii_tolower(unsigned char ch);
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/*
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* Beginning in v12, we always replace snprintf() and friends with our own
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* implementation. This symbol is no longer consulted by the core code,
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* but keep it defined anyway in case any extensions are looking at it.
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*/
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#define USE_REPL_SNPRINTF 1
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/*
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* Versions of libintl >= 0.13 try to replace printf() and friends with
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* macros to their own versions that understand the %$ format. We do the
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* same, so disable their macros, if they exist.
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*/
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#ifdef vsnprintf
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#undef vsnprintf
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#endif
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#ifdef snprintf
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#undef snprintf
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#endif
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#ifdef vsprintf
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#undef vsprintf
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#endif
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#ifdef sprintf
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#undef sprintf
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#endif
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#ifdef vfprintf
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#undef vfprintf
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||||
#endif
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#ifdef fprintf
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#undef fprintf
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||||
#endif
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#ifdef vprintf
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#undef vprintf
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#endif
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#ifdef printf
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#undef printf
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#endif
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extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
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extern int pg_snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3, 4);
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extern int pg_vsprintf(char *str, const char *fmt, va_list args);
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extern int pg_sprintf(char *str, const char *fmt,...) pg_attribute_printf(2, 3);
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extern int pg_vfprintf(FILE *stream, const char *fmt, va_list args);
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extern int pg_fprintf(FILE *stream, const char *fmt,...) pg_attribute_printf(2, 3);
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extern int pg_vprintf(const char *fmt, va_list args);
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extern int pg_printf(const char *fmt,...) pg_attribute_printf(1, 2);
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/*
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* We use __VA_ARGS__ for printf to prevent replacing references to
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* the "printf" format archetype in format() attribute declarations.
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* That unfortunately means that taking a function pointer to printf
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* will not do what we'd wish. (If you need to do that, you must name
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* pg_printf explicitly.) For printf's sibling functions, use
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* parameterless macros so that function pointers will work unsurprisingly.
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*/
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#define vsnprintf pg_vsnprintf
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#define snprintf pg_snprintf
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#define vsprintf pg_vsprintf
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#define sprintf pg_sprintf
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#define vfprintf pg_vfprintf
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#define fprintf pg_fprintf
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#define vprintf pg_vprintf
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#define printf(...) pg_printf(__VA_ARGS__)
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/* This is also provided by snprintf.c */
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extern int pg_strfromd(char *str, size_t count, int precision, double value);
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/* Replace strerror() with our own, somewhat more robust wrapper */
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extern char *pg_strerror(int errnum);
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#define strerror pg_strerror
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/* Likewise for strerror_r(); note we prefer the GNU API for that */
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extern char *pg_strerror_r(int errnum, char *buf, size_t buflen);
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#define strerror_r pg_strerror_r
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#define PG_STRERROR_R_BUFLEN 256 /* Recommended buffer size for strerror_r */
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/* Wrap strsignal(), or provide our own version if necessary */
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extern const char *pg_strsignal(int signum);
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extern int pclose_check(FILE *stream);
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/* Global variable holding time zone information. */
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#if defined(WIN32) || defined(__CYGWIN__)
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#define TIMEZONE_GLOBAL _timezone
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#define TZNAME_GLOBAL _tzname
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#else
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#define TIMEZONE_GLOBAL timezone
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#define TZNAME_GLOBAL tzname
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#endif
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#if defined(WIN32) || defined(__CYGWIN__)
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/*
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* Win32 doesn't have reliable rename/unlink during concurrent access.
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*/
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extern int pgrename(const char *from, const char *to);
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extern int pgunlink(const char *path);
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/* Include this first so later includes don't see these defines */
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#ifdef _MSC_VER
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#include <io.h>
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#endif
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#define rename(from, to) pgrename(from, to)
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#define unlink(path) pgunlink(path)
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#endif /* defined(WIN32) || defined(__CYGWIN__) */
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||||
/*
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* Win32 also doesn't have symlinks, but we can emulate them with
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||||
* junction points on newer Win32 versions.
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*
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* Cygwin has its own symlinks which work on Win95/98/ME where
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* junction points don't, so use those instead. We have no way of
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* knowing what type of system Cygwin binaries will be run on.
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* Note: Some CYGWIN includes might #define WIN32.
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*/
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#if defined(WIN32) && !defined(__CYGWIN__)
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extern int pgsymlink(const char *oldpath, const char *newpath);
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extern int pgreadlink(const char *path, char *buf, size_t size);
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extern bool pgwin32_is_junction(const char *path);
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#define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
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#define readlink(path, buf, size) pgreadlink(path, buf, size)
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#endif
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extern bool rmtree(const char *path, bool rmtopdir);
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||||
|
||||
#if defined(WIN32) && !defined(__CYGWIN__)
|
||||
|
||||
/*
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||||
* open() and fopen() replacements to allow deletion of open files and
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* passing of other special options.
|
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*/
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||||
#define O_DIRECT 0x80000000
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||||
extern int pgwin32_open(const char *, int,...);
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extern FILE *pgwin32_fopen(const char *, const char *);
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#define open(a,b,c) pgwin32_open(a,b,c)
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#define fopen(a,b) pgwin32_fopen(a,b)
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|
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/*
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||||
* Mingw-w64 headers #define popen and pclose to _popen and _pclose. We want
|
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* to use our popen wrapper, rather than plain _popen, so override that. For
|
||||
* consistency, use our version of pclose, too.
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*/
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#ifdef popen
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||||
#undef popen
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||||
#endif
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||||
#ifdef pclose
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||||
#undef pclose
|
||||
#endif
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||||
|
||||
/*
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||||
* system() and popen() replacements to enclose the command in an extra
|
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* pair of quotes.
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*/
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||||
extern int pgwin32_system(const char *command);
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extern FILE *pgwin32_popen(const char *command, const char *type);
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#define system(a) pgwin32_system(a)
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#define popen(a,b) pgwin32_popen(a,b)
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#define pclose(a) _pclose(a)
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||||
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||||
/* New versions of MingW have gettimeofday, old mingw and msvc don't */
|
||||
#ifndef HAVE_GETTIMEOFDAY
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||||
/* Last parameter not used */
|
||||
extern int gettimeofday(struct timeval *tp, struct timezone *tzp);
|
||||
#endif
|
||||
#else /* !WIN32 */
|
||||
|
||||
/*
|
||||
* Win32 requires a special close for sockets and pipes, while on Unix
|
||||
* close() does them all.
|
||||
*/
|
||||
#define closesocket close
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||||
#endif /* WIN32 */
|
||||
|
||||
/*
|
||||
* On Windows, setvbuf() does not support _IOLBF mode, and interprets that
|
||||
* as _IOFBF. To add insult to injury, setvbuf(file, NULL, _IOFBF, 0)
|
||||
* crashes outright if "parameter validation" is enabled. Therefore, in
|
||||
* places where we'd like to select line-buffered mode, we fall back to
|
||||
* unbuffered mode instead on Windows. Always use PG_IOLBF not _IOLBF
|
||||
* directly in order to implement this behavior.
|
||||
*/
|
||||
#ifndef WIN32
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||||
#define PG_IOLBF _IOLBF
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||||
#else
|
||||
#define PG_IOLBF _IONBF
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Default "extern" declarations or macro substitutes for library routines.
|
||||
* When necessary, these routines are provided by files in src/port/.
|
||||
*/
|
||||
|
||||
/* Type to use with fseeko/ftello */
|
||||
#ifndef WIN32 /* WIN32 is handled in port/win32_port.h */
|
||||
#define pgoff_t off_t
|
||||
#endif
|
||||
|
||||
extern double pg_erand48(unsigned short xseed[3]);
|
||||
extern long pg_lrand48(void);
|
||||
extern long pg_jrand48(unsigned short xseed[3]);
|
||||
extern void pg_srand48(long seed);
|
||||
|
||||
#ifndef HAVE_FLS
|
||||
extern int fls(int mask);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_GETPEEREID
|
||||
/* On Windows, Perl might have incompatible definitions of uid_t and gid_t. */
|
||||
#ifndef PLPERL_HAVE_UID_GID
|
||||
extern int getpeereid(int sock, uid_t *uid, gid_t *gid);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Glibc doesn't use the builtin for clang due to a *gcc* bug in a version
|
||||
* newer than the gcc compatibility clang claims to have. This would cause a
|
||||
* *lot* of superfluous function calls, therefore revert when using clang. In
|
||||
* C++ there's issues with libc++ (not libstdc++), so disable as well.
|
||||
*/
|
||||
#if defined(__clang__) && !defined(__cplusplus)
|
||||
/* needs to be separate to not confuse other compilers */
|
||||
#if __has_builtin(__builtin_isinf)
|
||||
/* need to include before, to avoid getting overwritten */
|
||||
#include <math.h>
|
||||
#undef isinf
|
||||
#define isinf __builtin_isinf
|
||||
#endif /* __has_builtin(isinf) */
|
||||
#endif /* __clang__ && !__cplusplus */
|
||||
|
||||
#ifndef HAVE_EXPLICIT_BZERO
|
||||
extern void explicit_bzero(void *buf, size_t len);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_STRTOF
|
||||
extern float strtof(const char *nptr, char **endptr);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_BUGGY_STRTOF
|
||||
extern float pg_strtof(const char *nptr, char **endptr);
|
||||
#define strtof(a,b) (pg_strtof((a),(b)))
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_LINK
|
||||
extern int link(const char *src, const char *dst);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_MKDTEMP
|
||||
extern char *mkdtemp(char *path);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_INET_ATON
|
||||
#include <netinet/in.h>
|
||||
#include <arpa/inet.h>
|
||||
extern int inet_aton(const char *cp, struct in_addr *addr);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Windows and older Unix don't have pread(2) and pwrite(2). We have
|
||||
* replacement functions, but they have slightly different semantics so we'll
|
||||
* use a name with a pg_ prefix to avoid confusion.
|
||||
*/
|
||||
#ifdef HAVE_PREAD
|
||||
#define pg_pread pread
|
||||
#else
|
||||
extern ssize_t pg_pread(int fd, void *buf, size_t nbyte, off_t offset);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PWRITE
|
||||
#define pg_pwrite pwrite
|
||||
#else
|
||||
extern ssize_t pg_pwrite(int fd, const void *buf, size_t nbyte, off_t offset);
|
||||
#endif
|
||||
|
||||
/* For pg_pwritev() and pg_preadv(), see port/pg_iovec.h. */
|
||||
|
||||
#if !HAVE_DECL_STRLCAT
|
||||
extern size_t strlcat(char *dst, const char *src, size_t siz);
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_STRLCPY
|
||||
extern size_t strlcpy(char *dst, const char *src, size_t siz);
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_STRNLEN
|
||||
extern size_t strnlen(const char *str, size_t maxlen);
|
||||
#endif
|
||||
|
||||
#if !defined(HAVE_RANDOM)
|
||||
extern long random(void);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_SETENV
|
||||
extern int setenv(const char *name, const char *value, int overwrite);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_UNSETENV
|
||||
extern int unsetenv(const char *name);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_SRANDOM
|
||||
extern void srandom(unsigned int seed);
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_DLOPEN
|
||||
extern void *dlopen(const char *file, int mode);
|
||||
extern void *dlsym(void *handle, const char *symbol);
|
||||
extern int dlclose(void *handle);
|
||||
extern char *dlerror(void);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* In some older systems, the RTLD_NOW flag isn't defined and the mode
|
||||
* argument to dlopen must always be 1.
|
||||
*/
|
||||
#if !HAVE_DECL_RTLD_NOW
|
||||
#define RTLD_NOW 1
|
||||
#endif
|
||||
|
||||
/*
|
||||
* The RTLD_GLOBAL flag is wanted if available, but it doesn't exist
|
||||
* everywhere. If it doesn't exist, set it to 0 so it has no effect.
|
||||
*/
|
||||
#if !HAVE_DECL_RTLD_GLOBAL
|
||||
#define RTLD_GLOBAL 0
|
||||
#endif
|
||||
|
||||
/* thread.h */
|
||||
#ifndef WIN32
|
||||
extern int pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer,
|
||||
size_t buflen, struct passwd **result);
|
||||
#endif
|
||||
|
||||
extern int pqGethostbyname(const char *name,
|
||||
struct hostent *resultbuf,
|
||||
char *buffer, size_t buflen,
|
||||
struct hostent **result,
|
||||
int *herrno);
|
||||
|
||||
extern void pg_qsort(void *base, size_t nel, size_t elsize,
|
||||
int (*cmp) (const void *, const void *));
|
||||
extern int pg_qsort_strcmp(const void *a, const void *b);
|
||||
|
||||
#define qsort(a,b,c,d) pg_qsort(a,b,c,d)
|
||||
|
||||
typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg);
|
||||
|
||||
extern void qsort_arg(void *base, size_t nel, size_t elsize,
|
||||
qsort_arg_comparator cmp, void *arg);
|
||||
|
||||
extern void *bsearch_arg(const void *key, const void *base,
|
||||
size_t nmemb, size_t size,
|
||||
int (*compar) (const void *, const void *, void *),
|
||||
void *arg);
|
||||
|
||||
/* port/chklocale.c */
|
||||
extern int pg_get_encoding_from_locale(const char *ctype, bool write_message);
|
||||
|
||||
#if defined(WIN32) && !defined(FRONTEND)
|
||||
extern int pg_codepage_to_encoding(UINT cp);
|
||||
#endif
|
||||
|
||||
/* port/inet_net_ntop.c */
|
||||
extern char *pg_inet_net_ntop(int af, const void *src, int bits,
|
||||
char *dst, size_t size);
|
||||
|
||||
/* port/pg_strong_random.c */
|
||||
extern void pg_strong_random_init(void);
|
||||
extern bool pg_strong_random(void *buf, size_t len);
|
||||
|
||||
/*
|
||||
* pg_backend_random used to be a wrapper for pg_strong_random before
|
||||
* Postgres 12 for the backend code.
|
||||
*/
|
||||
#define pg_backend_random pg_strong_random
|
||||
|
||||
/* port/pgcheckdir.c */
|
||||
extern int pg_check_dir(const char *dir);
|
||||
|
||||
/* port/pgmkdirp.c */
|
||||
extern int pg_mkdir_p(char *path, int omode);
|
||||
|
||||
/* port/pqsignal.c */
|
||||
typedef void (*pqsigfunc) (int signo);
|
||||
extern pqsigfunc pqsignal(int signo, pqsigfunc func);
|
||||
|
||||
/* port/quotes.c */
|
||||
extern char *escape_single_quotes_ascii(const char *src);
|
||||
|
||||
/* common/wait_error.c */
|
||||
extern char *wait_result_to_str(int exit_status);
|
||||
extern bool wait_result_is_signal(int exit_status, int signum);
|
||||
extern bool wait_result_is_any_signal(int exit_status, bool include_command_not_found);
|
||||
|
||||
#endif /* PG_PORT_H */
|
||||
Reference in New Issue
Block a user