223 lines
5.9 KiB
C
223 lines
5.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* port.h
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* Header for /port compatibility functions.
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*
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* Portions Copyright (c) 1996-2003, 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 1.36 2004/05/21 05:08:03 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#if !defined(_MSC_VER) && !defined(__BORLANDC__)
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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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bool set_noblock(int sock);
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/* Portable path handling for Unix/Win32 */
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extern char *first_path_separator(const char *filename);
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extern char *last_path_separator(const char *filename);
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extern void canonicalize_path(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_pkglib_path(const char *my_exec_path, char *ret_path);
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/*
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* is_absolute_path
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*
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* This capability is needed by libpq and initdb.c
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* On Win32, you can't reference the same object file that is
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* in two different libraries (pgport and libpq), so a macro is best.
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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, char const *target,
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const char *versionstr, char *retpath);
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#if defined(__CYGWIN__) || defined(WIN32)
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#define EXE ".exe"
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#define DEVNULL "nul"
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#else
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#define EXE ""
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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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/* Portable prompt handling */
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extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
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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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/*
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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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*/
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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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#endif
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extern int pclose_check(FILE *stream);
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#if defined(__MINGW32__) || 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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#define rename(from, to) pgrename(from, to)
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#define unlink(path) pgunlink(path)
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#endif
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#ifdef WIN32
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/* open() replacement to allow delete of held files */
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#ifndef _MSC_VER
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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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extern int copydir(char *fromdir, char *todir);
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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
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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
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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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#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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#if !defined(HAVE_GETHOSTNAME) && defined(KRB4)
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extern int gethostname(char *name, int namelen);
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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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#if !defined(_MSC_VER) && !defined(__BORLANDC__)
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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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#ifndef WIN32
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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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/* FIXME: [win32] Placeholder win32 replacements, to allow continued development */
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#ifdef WIN32
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#define fsync(a) _commit(a)
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#define sync() _flushall()
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#define ftruncate(a,b) chsize(a,b)
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#define WEXITSTATUS(w) (((w) >> 8) & 0xff)
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#define WIFEXITED(w) (((w) & 0xff) == 0)
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#define WIFSIGNALED(w) (((w) & 0x7f) > 0 && (((w) & 0x7f) < 0x7f))
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#define WTERMSIG(w) ((w) & 0x7f)
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#endif
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