/*-------------------------------------------------------------------------
*
* port . h
* Header for src / port / compatibility functions .
*
* Portions Copyright ( c ) 1996 - 2025 , PostgreSQL Global Development Group
* Portions Copyright ( c ) 1994 , Regents of the University of California
*
* src / include / port . h
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#ifndef PG_PORT_H
#define PG_PORT_H
#include <ctype.h>
/*
* Windows has enough specialized port stuff that we push most of it off
* into another file .
* Note : Some CYGWIN includes might # define WIN32 .
*/
#if defined (WIN32) && !defined (__CYGWIN__)
#include "port/win32_port.h"
#endif
/* socket has a different definition on WIN32 */
#ifndef WIN32
typedef int pgsocket;
#define PGINVALID_SOCKET (-1 )
#else
typedef SOCKET pgsocket;
#define PGINVALID_SOCKET INVALID_SOCKET
#endif
/* if platform lacks socklen_t, we assume this will work */
#ifndef HAVE_SOCKLEN_T
typedef unsigned int socklen_t;
#endif
/* non-blocking */
extern bool pg_set_noblock(pgsocket sock);
extern bool pg_set_block(pgsocket sock);
/* Portable path handling for Unix/Win32 (in path.c) */
extern bool has_drive_prefix(const char *path);
extern char *first_dir_separator(const char *filename);
extern char *last_dir_separator(const char *filename);
extern char *first_path_var_separator(const char *pathlist);
extern void join_path_components(char *ret_path,
const char *head, const char *tail);
extern void canonicalize_path(char *path);
extern void canonicalize_path_enc(char *path, int encoding);
extern void make_native_path(char *filename);
extern void cleanup_path(char *path);
extern bool path_contains_parent_reference(const char *path);
extern bool path_is_relative_and_below_cwd(const char *path);
extern bool path_is_safe_for_extraction(const char *path);
extern bool path_is_prefix_of_path(const char *path1, const char *path2);
extern char *make_absolute_path(const char *path);
extern const char *get_progname(const char *argv0);
extern void get_share_path(const char *my_exec_path, char *ret_path);
extern void get_etc_path(const char *my_exec_path, char *ret_path);
extern void get_include_path(const char *my_exec_path, char *ret_path);
extern void get_pkginclude_path(const char *my_exec_path, char *ret_path);
extern void get_includeserver_path(const char *my_exec_path, char *ret_path);
extern void get_lib_path(const char *my_exec_path, char *ret_path);
extern void get_pkglib_path(const char *my_exec_path, char *ret_path);
extern void get_locale_path(const char *my_exec_path, char *ret_path);
extern void get_doc_path(const char *my_exec_path, char *ret_path);
extern void get_html_path(const char *my_exec_path, char *ret_path);
extern void get_man_path(const char *my_exec_path, char *ret_path);
extern bool get_home_path(char *ret_path);
extern void get_parent_directory(char *path);
/* common/pgfnames.c */
extern char **pgfnames(const char *path);
extern void pgfnames_cleanup(char **filenames);
#define IS_NONWINDOWS_DIR_SEP(ch) ((ch) == '/' )
#define is_nonwindows_absolute_path(filename) \
( \
IS_NONWINDOWS_DIR_SEP((filename)[0 ]) \
)
#define IS_WINDOWS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\' )
/* See path_is_relative_and_below_cwd() for how we handle 'E:abc'. */
#define is_windows_absolute_path(filename) \
( \
IS_WINDOWS_DIR_SEP((filename)[0 ]) || \
(isalpha((unsigned char ) ((filename)[0 ])) && (filename)[1 ] == ':' && \
IS_WINDOWS_DIR_SEP((filename)[2 ])) \
)
/*
* is_absolute_path and IS_DIR_SEP
*
* By using macros here we avoid needing to include path . c in libpq .
*/
#ifndef WIN32
#define IS_DIR_SEP(ch) IS_NONWINDOWS_DIR_SEP(ch)
#define is_absolute_path(filename) is_nonwindows_absolute_path(filename)
#else
#define IS_DIR_SEP(ch) IS_WINDOWS_DIR_SEP(ch)
#define is_absolute_path(filename) is_windows_absolute_path(filename)
#endif
/*
* This macro provides a centralized list of all errnos that identify
* hard failure of a previously - established network connection .
* The macro is intended to be used in a switch statement , in the form
* " case ALL_CONNECTION_FAILURE_ERRNOS : " .
*
* Note : this groups EPIPE and ECONNRESET , which we take to indicate a
* probable server crash , with other errors that indicate loss of network
* connectivity without proving much about the server ' s state . Places that
* are actually reporting errors typically single out EPIPE and ECONNRESET ,
* while allowing the network failures to be reported generically .
*/
#define ALL_CONNECTION_FAILURE_ERRNOS \
EPIPE: \
case ECONNRESET: \
case ECONNABORTED: \
case EHOSTDOWN: \
case EHOSTUNREACH: \
case ENETDOWN: \
case ENETRESET: \
case ENETUNREACH: \
case ETIMEDOUT
/* Portable locale initialization (in exec.c) */
extern void set_pglocale_pgservice(const char *argv0, const char *app);
/* Portable way to find and execute binaries (in exec.c) */
extern int validate_exec(const char *path);
extern int find_my_exec(const char *argv0, char *retpath);
extern int find_other_exec(const char *argv0, const char *target,
const char *versionstr, char *retpath);
extern char *pipe_read_line(char *cmd);
/* Doesn't belong here, but this is used with find_other_exec(), so... */
#define PG_BACKEND_VERSIONSTR "postgres (PostgreSQL) " PG_VERSION "\n"
#ifdef EXEC_BACKEND
/* Disable ASLR before exec, for developer builds only (in exec.c) */
extern int pg_disable_aslr(void );
#endif
#if defined (WIN32) || defined (__CYGWIN__)
#define EXE ".exe"
#else
#define EXE ""
#endif
#if defined (WIN32) && !defined (__CYGWIN__)
#define DEVNULL "nul"
#else
#define DEVNULL "/dev/null"
#endif
/* Portable delay handling */
extern void pg_usleep(long microsec);
/* Portable SQL-like case-independent comparisons and conversions */
extern int pg_strcasecmp(const char *s1, const char *s2);
extern int pg_strncasecmp(const char *s1, const char *s2, size_t n);
extern unsigned char pg_toupper(unsigned char ch);
extern unsigned char pg_tolower(unsigned char ch);
extern unsigned char pg_ascii_toupper(unsigned char ch);
extern unsigned char pg_ascii_tolower(unsigned char ch);
/*
* Beginning in v12 , we always replace snprintf ( ) and friends with our own
* implementation . This symbol is no longer consulted by the core code ,
* but keep it defined anyway in case any extensions are looking at it .
*/
#define USE_REPL_SNPRINTF 1
/*
* Versions of libintl > = 0 . 13 try to replace printf ( ) and friends with
* macros to their own versions that understand the % $ format . We do the
* same , so disable their macros , if they exist .
*/
#ifdef vsnprintf
#undef vsnprintf
#endif
#ifdef snprintf
#undef snprintf
#endif
#ifdef vsprintf
#undef vsprintf
#endif
#ifdef sprintf
#undef sprintf
#endif
#ifdef vfprintf
#undef vfprintf
#endif
#ifdef fprintf
#undef fprintf
#endif
#ifdef vprintf
#undef vprintf
#endif
#ifdef printf
#undef printf
#endif
extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args) pg_attribute_printf(3 , 0 );
extern int pg_snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3 , 4 );
extern int pg_vsprintf(char *str, const char *fmt, va_list args) pg_attribute_printf(2 , 0 );
extern int pg_sprintf(char *str, const char *fmt,...) pg_attribute_printf(2 , 3 );
extern int pg_vfprintf(FILE *stream, const char *fmt, va_list args) pg_attribute_printf(2 , 0 );
extern int pg_fprintf(FILE *stream, const char *fmt,...) pg_attribute_printf(2 , 3 );
extern int pg_vprintf(const char *fmt, va_list args) pg_attribute_printf(1 , 0 );
extern int pg_printf(const char *fmt,...) pg_attribute_printf(1 , 2 );
#ifndef WIN32
/*
* We add a pg_ prefix as a warning that the Windows implementations have the
* non - standard side - effect of changing the current file position .
*/
#define pg_pread pread
#define pg_pwrite pwrite
#endif
/*
* We use _ _ VA_ARGS__ for printf to prevent replacing references to
* the " printf " format archetype in format ( ) attribute declarations .
* That unfortunately means that taking a function pointer to printf
* will not do what we ' d wish . ( If you need to do that , you must name
* pg_printf explicitly . ) For printf ' s sibling functions , use
* parameterless macros so that function pointers will work unsurprisingly .
*/
#define vsnprintf pg_vsnprintf
#define snprintf pg_snprintf
#define vsprintf pg_vsprintf
#define sprintf pg_sprintf
#define vfprintf pg_vfprintf
#define fprintf pg_fprintf
#define vprintf pg_vprintf
#define printf(...) pg_printf(__VA_ARGS__)
/* This is also provided by snprintf.c */
extern int pg_strfromd(char *str, size_t count, int precision, double value);
/* Replace strerror() with our own, somewhat more robust wrapper */
extern char *pg_strerror(int errnum);
#define strerror pg_strerror
/* Likewise for strerror_r(); note we prefer the GNU API for that */
extern char *pg_strerror_r(int errnum, char *buf, size_t buflen);
#define strerror_r pg_strerror_r
#define PG_STRERROR_R_BUFLEN 256 /* Recommended buffer size for strerror_r */
/* Wrap strsignal(), or provide our own version if necessary */
extern const char *pg_strsignal(int signum);
extern int pclose_check(FILE *stream);
/* Global variable holding time zone information. */
#if defined (WIN32) || defined (__CYGWIN__)
#define TIMEZONE_GLOBAL _timezone
#define TZNAME_GLOBAL _tzname
#else
#define TIMEZONE_GLOBAL timezone
#define TZNAME_GLOBAL tzname
#endif
#if defined (WIN32) || defined (__CYGWIN__)
/*
* Win32 doesn ' t have reliable rename / unlink during concurrent access .
*/
extern int pgrename(const char *from, const char *to);
extern int pgunlink(const char *path);
/* Include this first so later includes don't see these defines */
#ifdef _MSC_VER
#include <io.h>
#endif
#define rename(from, to) pgrename(from, to)
#define unlink(path) pgunlink(path)
#endif /* defined(WIN32) || defined(__CYGWIN__) */
/*
* Win32 also doesn ' t have symlinks , but we can emulate them with
* junction points on newer Win32 versions .
*
* Cygwin has its own symlinks which work on Win95 / 98 / ME where
* junction points don ' t , so use those instead . We have no way of
* knowing what type of system Cygwin binaries will be run on .
* Note : Some CYGWIN includes might # define WIN32 .
*/
#if defined (WIN32) && !defined (__CYGWIN__)
extern int pgsymlink(const char *oldpath, const char *newpath);
extern int pgreadlink(const char *path, char *buf, size_t size);
#define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
#define readlink(path, buf, size) pgreadlink(path, buf, size)
#endif
extern bool rmtree(const char *path, bool rmtopdir);
#if defined (WIN32) && !defined (__CYGWIN__)
/*
* We want the 64 - bit variant of lseek ( ) .
*
* For Visual Studio , this must be after < io . h > to avoid messing up its
* lseek ( ) and _ lseeki64 ( ) function declarations .
*
* For MinGW there is already a macro , so we have to undefine it ( depending on
* _ FILE_OFFSET_BITS , it may point at its own lseek64 , but we don ' t want to
* count on that being set ) .
*/
#undef lseek
#define lseek(a,b,c) _lseeki64((a),(b),(c))
/*
* We want the 64 - bit variant of chsize ( ) . It sets errno and also returns it ,
* so convert non - zero result to - 1 to match POSIX .
*
* Prevent MinGW from declaring functions , and undefine its macro before we
* define our own .
*/
#ifndef _MSC_VER
#define FTRUNCATE_DEFINED
#include <unistd.h>
#undef ftruncate
#endif
#define ftruncate(a,b) (_chsize_s((a),(b)) == 0 ? 0 : -1 )
/*
* open ( ) and fopen ( ) replacements to allow deletion of open files and
* passing of other special options .
*/
extern HANDLE pgwin32_open_handle(const char *, int , bool );
extern int pgwin32_open(const char *, int ,...);
extern FILE *pgwin32_fopen(const char *, const char *);
#define open(a,b,c) pgwin32_open(a,b,c)
#define fopen(a,b) pgwin32_fopen(a,b)
/*
* Mingw - w64 headers # define popen and pclose to _ popen and _ pclose . We want
* to use our popen wrapper , rather than plain _ popen , so override that . For
* consistency , use our version of pclose , too .
*/
#ifdef popen
#undef popen
#endif
#ifdef pclose
#undef pclose
#endif
/*
* system ( ) and popen ( ) replacements to enclose the command in an extra
* pair of quotes .
*/
extern int pgwin32_system(const char *command);
extern FILE *pgwin32_popen(const char *command, const char *type);
#define system(a) pgwin32_system(a)
#define popen(a,b) pgwin32_popen(a,b)
#define pclose(a) _pclose(a)
#else /* !WIN32 */
/*
* Win32 requires a special close for sockets and pipes , while on Unix
* close ( ) does them all .
*/
#define closesocket close
#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
#define PG_IOLBF _IOLBF
#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
#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
#ifdef HAVE_BUGGY_STRTOF
extern float pg_strtof(const char *nptr, char **endptr);
#define strtof(a,b) (pg_strtof((a),(b)))
#endif
#ifdef WIN32
/* src/port/win32link.c */
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
#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 !HAVE_DECL_STRSEP
extern char *strsep(char **stringp, const char *delim);
#endif
#if !HAVE_DECL_TIMINGSAFE_BCMP
extern int timingsafe_bcmp(const void *b1, const void *b2, size_t len);
#endif
/*
* Callers should use the qsort ( ) macro defined below instead of calling
* pg_qsort ( ) directly .
*/
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 qsort_interruptible(void *base, size_t nel, size_t elsize,
qsort_arg_comparator cmp, void *arg);
extern void *bsearch_arg(const void *key, const void *base0,
size_t nmemb, size_t size,
int (*compar) (const void *, const void *, void *),
void *arg);
/* port/pg_localeconv_r.c */
extern int pg_localeconv_r(const char *lc_monetary,
const char *lc_numeric,
struct lconv *output);
extern void pg_localeconv_free(struct lconv *lconv);
/* 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 (see also interfaces/libpq/legacy-pqsignal.c) */
#ifdef FRONTEND
#define pqsignal pqsignal_fe
#else
#define pqsignal pqsignal_be
#endif
typedef void (*pqsigfunc) (SIGNAL_ARGS);
extern void 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 exitstatus);
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);
extern int wait_result_to_exit_code(int exit_status);
/*
* Interfaces that we assume all Unix system have . We retain individual macros
* for better documentation .
*
* For symlink - related functions , there is often no need to test these macros ,
* because we provided basic support on Windows that can work with absolute
* paths to directories . Code that wants to test for complete symlink support
* ( including relative paths and non - directories ) should be conditional on
* HAVE_READLINK or HAVE_SYMLINK .
*/
#ifndef WIN32
#define HAVE_GETRLIMIT 1
#define HAVE_POLL 1
#define HAVE_POLL_H 1
#define HAVE_READLINK 1
#define HAVE_SETSID 1
#define HAVE_SHM_OPEN 1
#define HAVE_SYMLINK 1
#endif
#endif /* PG_PORT_H */
Messung V0.5 in Prozent C=90 H=100 G=95
¤ Dauer der Verarbeitung: 0.3 Sekunden
(vorverarbeitet am 2026-08-04)
¤
*© Formatika GbR, Deutschland