/*------------------------------------------------------------------------- * * port.h * Header for src/port/ compatibility functions. * * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * $PostgreSQL: pgsql/src/include/port.h,v 1.71 2005/03/11 17:20:34 momjian Exp $ * *------------------------------------------------------------------------- */ #ifndef WIN32_CLIENT_ONLY /* for thread.c */ #include #include #endif #include /* non-blocking */ extern bool set_noblock(int sock); /* Portable path handling for Unix/Win32 */ extern char *first_dir_separator(const char *filename); extern char *last_dir_separator(const char *filename); extern char *first_path_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 make_native_path(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 set_pglocale_pgservice(const char *argv0, const char *app); extern bool get_home_path(char *ret_path); extern void get_parent_directory(char *path); /* * is_absolute_path * * By making this a macro we prevent the need for libpq to include * path.c which uses exec.c. */ #ifndef WIN32 #define is_absolute_path(filename) \ ( \ ((filename)[0] == '/') \ ) #else #define is_absolute_path(filename) \ ( \ ((filename)[0] == '/') || \ (filename)[0] == '\\' || \ (isalpha((filename)[0]) && (filename)[1] == ':' && \ ((filename)[2] == '\\' || (filename)[2] == '/')) \ ) #endif /* Portable way to find binaries */ 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); #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 /* * Win32 needs double quotes at the beginning and end of system() * strings. If not, it gets confused with multiple quoted strings. * It also requires double-quotes around the executable name and * any files used for redirection. Other args can use single-quotes. * * See the "Notes" section about quotes at: * http://home.earthlink.net/~rlively/MANUALS/COMMANDS/C/CMD.HTM */ #if defined(WIN32) && !defined(__CYGWIN__) #define SYSTEMQUOTE "\"" #else #define SYSTEMQUOTE "" #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); #ifdef USE_SNPRINTF extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args); extern int pg_snprintf(char *str, size_t count, const char *fmt,...) /* This extension allows gcc to check the format string */ __attribute__((format(printf, 3, 4))); extern int pg_printf(const char *fmt,...) /* This extension allows gcc to check the format string */ __attribute__((format(printf, 1, 2))); #ifdef __GNUC__ #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__) #define snprintf(...) pg_snprintf(__VA_ARGS__) #define printf(...) pg_printf(__VA_ARGS__) #else #define vsnprintf pg_vsnprintf #define snprintf pg_snprintf #define printf pg_printf #endif #endif /* Portable prompt handling */ extern char *simple_prompt(const char *prompt, int maxlen, bool echo); /* * WIN32 doesn't allow descriptors returned by pipe() to be used in select(), * so for that platform we use socket() instead of pipe(). * There is some inconsistency here because sometimes we require pg*, like * pgpipe, but in other cases we define rename to pgrename just on Win32. */ #ifndef WIN32 #define pgpipe(a) pipe(a) #define piperead(a,b,c) read(a,b,c) #define pipewrite(a,b,c) write(a,b,c) #else extern int pgpipe(int handles[2]); extern int piperead(int s, char *buf, int len); #define pipewrite(a,b,c) send(a,b,c,0) #define PG_SIGNAL_COUNT 32 #define kill(pid,sig) pgkill(pid,sig) extern int pgkill(int pid, int sig); #endif extern int pclose_check(FILE *stream); /* Global variable holding time zone information. */ #ifndef __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, * and we need special code to do symlinks. */ 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 WIN32_CLIENT_ONLY #include #endif #define rename(from, to) pgrename(from, to) #define unlink(path) pgunlink(path) /* * Cygwin has its own symlinks which work on Win95/98/ME where * junction points don't, so use it 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); #define symlink(oldpath, newpath) pgsymlink(oldpath, newpath) #endif #endif /* defined(WIN32) || defined(__CYGWIN__) */ extern bool rmtree(char *path, bool rmtopdir); #if defined(WIN32) && !defined(__CYGWIN__) /* open() replacement to allow delete of held files and passing * of special options. */ #ifndef WIN32_CLIENT_ONLY extern int win32_open(const char *, int,...); #define open(a,b,...) win32_open(a,b,##__VA_ARGS__) #endif #ifndef __BORLANDC__ #define popen(a,b) _popen(a,b) #define pclose(a) _pclose(a) #endif extern int copydir(char *fromdir, char *todir); /* Missing rand functions */ extern long lrand48(void); extern void srand48(long seed); /* Last parameter not used */ extern int gettimeofday(struct timeval * tp, struct timezone * tzp); #else /* !WIN32 */ /* * Win32 requires a special close for sockets and pipes, while on Unix * close() does them all. */ #define closesocket close #endif /* WIN32 */ /* * Default "extern" declarations or macro substitutes for library routines. * When necessary, these routines are provided by files in src/port/. */ #ifndef HAVE_CRYPT extern char *crypt(const char *key, const char *setting); #endif #if defined(bsdi) || defined(netbsd) extern int fseeko(FILE *stream, off_t offset, int whence); extern off_t ftello(FILE *stream); #endif #ifndef HAVE_FSEEKO #define fseeko(a, b, c) fseek((a), (b), (c)) #define ftello(a) ftell((a)) #endif #ifndef HAVE_GETOPT extern int getopt(int nargc, char *const * nargv, const char *ostr); #endif #ifndef HAVE_ISINF extern int isinf(double x); #endif #if !defined(HAVE_GETHOSTNAME) && defined(KRB4) extern int gethostname(char *name, int namelen); #endif #ifndef HAVE_RINT extern double rint(double x); #endif #ifndef HAVE_INET_ATON #ifndef WIN32_CLIENT_ONLY #include #include #endif extern int inet_aton(const char *cp, struct in_addr * addr); #endif #ifndef HAVE_STRDUP extern char *strdup(char const *); #endif #ifndef HAVE_RANDOM extern long random(void); #endif #ifndef HAVE_UNSETENV extern void unsetenv(const char *name); #endif #ifndef HAVE_SRANDOM extern void srandom(unsigned int seed); #endif /* thread.h */ extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen); #if !defined(WIN32) || defined(__CYGWIN__) 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);