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8aec77fb9f
it can be done right. Allow explicit use of absolute DataDir path. Per Dave Page.
313 lines
9.1 KiB
C
313 lines
9.1 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) 1996-2005, 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 1.82 2005/08/29 19:39:39 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef WIN32_CLIENT_ONLY
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/* for thread.c */
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#include <pwd.h>
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#include <netdb.h>
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#endif
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#include <ctype.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 */
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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 set_pglocale_pgservice(const char *argv0, const char *app);
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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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/*
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* is_absolute_path
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*
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* By making this a macro we prevent the need for libpq to include
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* path.c which uses exec.c.
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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((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 way to find binaries */
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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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#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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/*
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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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* See the "Notes" section about quotes at:
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* http://home.earthlink.net/~rlively/MANUALS/COMMANDS/C/CMD.HTM
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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_SNPRINTF
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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,...)
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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 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_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 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 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 fprintf pg_fprintf
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#define printf pg_printf
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#endif
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#endif
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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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#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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* and we need special code to do symlinks.
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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_CLIENT_ONLY
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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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/*
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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 it 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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#endif /* defined(WIN32) || defined(__CYGWIN__) */
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extern void copydir(char *fromdir, char *todir, bool recurse);
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extern bool rmtree(char *path, bool rmtopdir);
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#if defined(WIN32) && !defined(__CYGWIN__)
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/* open() replacement to allow delete of held files and passing
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* of special options. */
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#ifndef WIN32_CLIENT_ONLY
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extern int win32_open(const char *, int,...);
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#define open(a,b,...) win32_open(a,b,##__VA_ARGS__)
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#endif
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#ifndef __BORLANDC__
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#define popen(a,b) _popen(a,b)
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#define pclose(a) _pclose(a)
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#endif
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/* Missing rand functions */
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extern long lrand48(void);
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extern void srand48(long seed);
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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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#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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#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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#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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#ifndef WIN32_CLIENT_ONLY
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#endif
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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(char const *);
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#endif
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#ifndef HAVE_RANDOM
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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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