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c43feefa80
and extend configure to test for it properly instead of hard-wiring an assumption that everybody but Windows has the rand48 functions. (We do cheat to the extent of assuming that probing for erand48 will do for the entire rand48 family.) erand48() is unused as of this commit, but a followon patch will cause GEQO to depend on it. Andres Freund, additional hacking by Tom
432 lines
13 KiB
C
432 lines
13 KiB
C
/*-------------------------------------------------------------------------
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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) 1996-2009, 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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* $PostgreSQL: pgsql/src/include/port.h,v 1.126 2009/07/16 17:43:52 tgl Exp $
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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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/* non-blocking */
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extern bool pg_set_noblock(int sock);
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extern bool pg_set_block(int sock);
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/* Portable path handling for Unix/Win32 (in path.c) */
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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_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 bool path_contains_parent_reference(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 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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/* port/dirmod.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_absolute_path(filename) \
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( \
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((filename)[0] == '/') \
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)
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#else
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#define is_absolute_path(filename) \
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( \
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((filename)[0] == '/') || \
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(filename)[0] == '\\' || \
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(isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \
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((filename)[2] == '\\' || (filename)[2] == '/')) \
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)
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#endif
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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 binaries (in exec.c) */
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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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/* Windows security token manipulation (in exec.c) */
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#ifdef WIN32
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extern BOOL AddUserToDacl(HANDLE hProcess);
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#endif
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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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/* "con" does not work from the Msys 1.0.10 console (part of MinGW). */
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#define DEVTTY "con"
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#else
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#define DEVNULL "/dev/null"
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#define DEVTTY "/dev/tty"
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#endif
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/*
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* Win32 needs double quotes at the beginning and end of system()
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* strings. If not, it gets confused with multiple quoted strings.
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* It also requires double-quotes around the executable name and
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* any files used for redirection. Other args can use single-quotes.
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*
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* Generated using Win32 "CMD /?":
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*
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* 1. If all of the following conditions are met, then quote characters
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* on the command line are preserved:
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*
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* - no /S switch
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* - exactly two quote characters
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* - no special characters between the two quote characters, where special
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* is one of: &<>()@^|
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* - there are one or more whitespace characters between the the two quote
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* characters
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* - the string between the two quote characters is the name of an
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* executable file.
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*
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* 2. Otherwise, old behavior is to see if the first character is a quote
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* character and if so, strip the leading character and remove the last
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* quote character on the command line, preserving any text after the last
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* quote character.
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*/
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#if defined(WIN32) && !defined(__CYGWIN__)
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#define SYSTEMQUOTE "\""
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#else
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#define SYSTEMQUOTE ""
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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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#ifdef USE_REPL_SNPRINTF
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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 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 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
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pg_snprintf(char *str, size_t count, const char *fmt,...)
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/* This extension allows gcc to check the format string */
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__attribute__((format(printf, 3, 4)));
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extern int
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pg_sprintf(char *str, const char *fmt,...)
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/* This extension allows gcc to check the format string */
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__attribute__((format(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
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pg_fprintf(FILE *stream, const char *fmt,...)
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/* This extension allows gcc to check the format string */
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__attribute__((format(printf, 2, 3)));
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extern int
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pg_printf(const char *fmt,...)
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/* This extension allows gcc to check the format string */
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__attribute__((format(printf, 1, 2)));
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/*
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* The GCC-specific code below prevents the __attribute__(... 'printf')
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* above from being replaced, and this is required because gcc doesn't
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* know anything about pg_printf.
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*/
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#ifdef __GNUC__
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#define vsnprintf(...) pg_vsnprintf(__VA_ARGS__)
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#define snprintf(...) pg_snprintf(__VA_ARGS__)
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#define sprintf(...) pg_sprintf(__VA_ARGS__)
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#define vfprintf(...) pg_vfprintf(__VA_ARGS__)
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#define fprintf(...) pg_fprintf(__VA_ARGS__)
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#define printf(...) pg_printf(__VA_ARGS__)
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#else
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#define vsnprintf pg_vsnprintf
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#define snprintf pg_snprintf
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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 printf pg_printf
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#endif
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#endif /* USE_REPL_SNPRINTF */
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/* Portable prompt handling */
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extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
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/*
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* WIN32 doesn't allow descriptors returned by pipe() to be used in select(),
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* so for that platform we use socket() instead of pipe().
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* There is some inconsistency here because sometimes we require pg*, like
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* pgpipe, but in other cases we define rename to pgrename just on Win32.
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*/
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#ifndef WIN32
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/*
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* The function prototypes are not supplied because every C file
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* includes this file.
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*/
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#define pgpipe(a) pipe(a)
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#define piperead(a,b,c) read(a,b,c)
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#define pipewrite(a,b,c) write(a,b,c)
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#else
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extern int pgpipe(int handles[2]);
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extern int piperead(int s, char *buf, int len);
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#define pipewrite(a,b,c) send(a,b,c,0)
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#define PG_SIGNAL_COUNT 32
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#define kill(pid,sig) pgkill(pid,sig)
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extern int pgkill(int pid, int sig);
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#endif
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extern int pclose_check(FILE *stream);
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/* Global variable holding time zone information. */
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#ifndef __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 WIN32_ONLY_COMPILER
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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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#define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
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#endif
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extern void copydir(char *fromdir, char *todir, bool recurse);
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extern bool rmtree(const char *path, bool rmtopdir);
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/*
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* stat() is not guaranteed to set the st_size field on win32, so we
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* redefine it to our own implementation that is.
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*
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* We must pull in sys/stat.h here so the system header definition
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* goes in first, and we redefine that, and not the other way around.
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*
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* Some frontends don't need the size from stat, so if UNSAFE_STAT_OK
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* is defined we don't bother with this.
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*/
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#if defined(WIN32) && !defined(__CYGWIN__) && !defined(UNSAFE_STAT_OK)
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#include <sys/stat.h>
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extern int pgwin32_safestat(const char *path, struct stat * buf);
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#define stat(a,b) pgwin32_safestat(a,b)
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#endif
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#if defined(WIN32) && !defined(__CYGWIN__)
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/*
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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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#ifndef FRONTEND
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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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#endif
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#define popen(a,b) _popen(a,b)
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#define pclose(a) _pclose(a)
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/* New versions of MingW have gettimeofday, old mingw and msvc don't */
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#ifndef HAVE_GETTIMEOFDAY
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/* Last parameter not used */
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extern int gettimeofday(struct timeval * tp, struct timezone * tzp);
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#endif
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#else /* !WIN32 */
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/*
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* Win32 requires a special close for sockets and pipes, while on Unix
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* close() does them all.
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*/
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#define closesocket close
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#endif /* WIN32 */
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/*
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* Default "extern" declarations or macro substitutes for library routines.
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* When necessary, these routines are provided by files in src/port/.
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*/
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#ifndef HAVE_CRYPT
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extern char *crypt(const char *key, const char *setting);
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#endif
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/* WIN32 handled in port/win32.h */
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#ifndef WIN32
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#define pgoff_t off_t
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#if defined(bsdi) || defined(netbsd)
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extern int fseeko(FILE *stream, off_t offset, int whence);
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extern off_t ftello(FILE *stream);
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#endif
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#endif
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#ifndef HAVE_ERAND48
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/* we assume all of these are present or missing together */
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extern double erand48(unsigned short xseed[3]);
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extern long lrand48(void);
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extern void srand48(long seed);
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#endif
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#ifndef HAVE_FSEEKO
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#define fseeko(a, b, c) fseek(a, b, c)
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#define ftello(a) ftell(a)
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#endif
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#ifndef HAVE_GETOPT
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extern int getopt(int nargc, char *const * nargv, const char *ostr);
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#endif
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#ifndef HAVE_ISINF
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extern int isinf(double x);
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#endif
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#ifndef HAVE_RINT
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extern double rint(double x);
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#endif
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#ifndef HAVE_INET_ATON
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#include <netinet/in.h>
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#include <arpa/inet.h>
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extern int inet_aton(const char *cp, struct in_addr * addr);
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#endif
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#ifndef HAVE_STRDUP
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extern char *strdup(const char *str);
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#endif
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#if !HAVE_DECL_STRLCAT
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extern size_t strlcat(char *dst, const char *src, size_t siz);
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#endif
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#if !HAVE_DECL_STRLCPY
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extern size_t strlcpy(char *dst, const char *src, size_t siz);
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#endif
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#if !defined(HAVE_RANDOM) && !defined(__BORLANDC__)
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extern long random(void);
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#endif
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#ifndef HAVE_UNSETENV
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extern void unsetenv(const char *name);
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#endif
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#ifndef HAVE_SRANDOM
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extern void srandom(unsigned int seed);
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#endif
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/* thread.h */
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extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
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#if !defined(WIN32) || defined(__CYGWIN__)
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extern int pqGetpwuid(uid_t uid, struct passwd * resultbuf, char *buffer,
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size_t buflen, struct passwd ** result);
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#endif
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extern int pqGethostbyname(const char *name,
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struct hostent * resultbuf,
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char *buffer, size_t buflen,
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struct hostent ** result,
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int *herrno);
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extern void pg_qsort(void *base, size_t nel, size_t elsize,
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int (*cmp) (const void *, const void *));
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#define qsort(a,b,c,d) pg_qsort(a,b,c,d)
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typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg);
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extern void qsort_arg(void *base, size_t nel, size_t elsize,
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qsort_arg_comparator cmp, void *arg);
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/* port/chklocale.c */
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extern int pg_get_encoding_from_locale(const char *ctype);
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#endif /* PG_PORT_H */
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