1 /*-------------------------------------------------------------------------
4 * Header for src/port/ compatibility functions.
6 * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
7 * Portions Copyright (c) 1994, Regents of the University of California
9 * $PostgreSQL: pgsql/src/include/port.h,v 1.87 2005/12/06 18:35:10 momjian Exp $
11 *-------------------------------------------------------------------------
14 #ifndef WIN32_CLIENT_ONLY
23 extern bool pg_set_noblock(int sock);
24 extern bool pg_set_block(int sock);
26 /* Portable path handling for Unix/Win32 */
28 extern char *first_dir_separator(const char *filename);
29 extern char *last_dir_separator(const char *filename);
30 extern char *first_path_separator(const char *pathlist);
31 extern void join_path_components(char *ret_path,
32 const char *head, const char *tail);
33 extern void canonicalize_path(char *path);
34 extern void make_native_path(char *path);
35 extern bool path_contains_parent_reference(const char *path);
36 extern bool path_is_prefix_of_path(const char *path1, const char *path2);
37 extern const char *get_progname(const char *argv0);
38 extern void get_share_path(const char *my_exec_path, char *ret_path);
39 extern void get_etc_path(const char *my_exec_path, char *ret_path);
40 extern void get_include_path(const char *my_exec_path, char *ret_path);
41 extern void get_pkginclude_path(const char *my_exec_path, char *ret_path);
42 extern void get_includeserver_path(const char *my_exec_path, char *ret_path);
43 extern void get_lib_path(const char *my_exec_path, char *ret_path);
44 extern void get_pkglib_path(const char *my_exec_path, char *ret_path);
45 extern void get_locale_path(const char *my_exec_path, char *ret_path);
46 extern void get_doc_path(const char *my_exec_path, char *ret_path);
47 extern void get_man_path(const char *my_exec_path, char *ret_path);
48 extern void set_pglocale_pgservice(const char *argv0, const char *app);
49 extern bool get_home_path(char *ret_path);
50 extern void get_parent_directory(char *path);
55 * By making this a macro we prevent the need for libpq to include
56 * path.c which uses exec.c.
59 #define is_absolute_path(filename) \
61 ((filename)[0] == '/') \
64 #define is_absolute_path(filename) \
66 ((filename)[0] == '/') || \
67 (filename)[0] == '\\' || \
68 (isalpha((filename)[0]) && (filename)[1] == ':' && \
69 ((filename)[2] == '\\' || (filename)[2] == '/')) \
74 /* Portable way to find binaries */
75 extern int find_my_exec(const char *argv0, char *retpath);
76 extern int find_other_exec(const char *argv0, const char *target,
77 const char *versionstr, char *retpath);
79 #if defined(WIN32) || defined(__CYGWIN__)
85 #if defined(WIN32) && !defined(__CYGWIN__)
88 #define DEVNULL "/dev/null"
92 * Win32 needs double quotes at the beginning and end of system()
93 * strings. If not, it gets confused with multiple quoted strings.
94 * It also requires double-quotes around the executable name and
95 * any files used for redirection. Other args can use single-quotes.
97 * See the "Notes" section about quotes at:
98 * http://home.earthlink.net/~rlively/MANUALS/COMMANDS/C/CMD.HTM
100 #if defined(WIN32) && !defined(__CYGWIN__)
101 #define SYSTEMQUOTE "\""
103 #define SYSTEMQUOTE ""
106 /* Portable delay handling */
107 extern void pg_usleep(long microsec);
109 /* Portable SQL-like case-independent comparisons and conversions */
110 extern int pg_strcasecmp(const char *s1, const char *s2);
111 extern int pg_strncasecmp(const char *s1, const char *s2, size_t n);
112 extern unsigned char pg_toupper(unsigned char ch);
113 extern unsigned char pg_tolower(unsigned char ch);
115 #ifdef USE_REPL_SNPRINTF
118 * Versions of libintl >= 0.13 try to replace printf() and friends with
119 * macros to their own versions that understand the %$ format. We do the
120 * same, so disable their macros, if they exist.
138 extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
140 pg_snprintf(char *str, size_t count, const char *fmt,...)
141 /* This extension allows gcc to check the format string */
142 __attribute__((format(printf, 3, 4)));
144 pg_sprintf(char *str, const char *fmt,...)
145 /* This extension allows gcc to check the format string */
146 __attribute__((format(printf, 2, 3)));
148 pg_fprintf(FILE *stream, const char *fmt,...)
149 /* This extension allows gcc to check the format string */
150 __attribute__((format(printf, 2, 3)));
152 pg_printf(const char *fmt,...)
153 /* This extension allows gcc to check the format string */
154 __attribute__((format(printf, 1, 2)));
157 * The GCC-specific code below prevents the __attribute__(... 'printf')
158 * above from being replaced, and this is required because gcc doesn't
159 * know anything about pg_printf.
162 #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__)
163 #define snprintf(...) pg_snprintf(__VA_ARGS__)
164 #define sprintf(...) pg_sprintf(__VA_ARGS__)
165 #define fprintf(...) pg_fprintf(__VA_ARGS__)
166 #define printf(...) pg_printf(__VA_ARGS__)
168 #define vsnprintf pg_vsnprintf
169 #define snprintf pg_snprintf
170 #define sprintf pg_sprintf
171 #define fprintf pg_fprintf
172 #define printf pg_printf
175 #endif /* USE_REPL_SNPRINTF */
177 /* Portable prompt handling */
178 extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
181 * WIN32 doesn't allow descriptors returned by pipe() to be used in select(),
182 * so for that platform we use socket() instead of pipe().
183 * There is some inconsistency here because sometimes we require pg*, like
184 * pgpipe, but in other cases we define rename to pgrename just on Win32.
187 #define pgpipe(a) pipe(a)
188 #define piperead(a,b,c) read(a,b,c)
189 #define pipewrite(a,b,c) write(a,b,c)
191 extern int pgpipe(int handles[2]);
192 extern int piperead(int s, char *buf, int len);
194 #define pipewrite(a,b,c) send(a,b,c,0)
196 #define PG_SIGNAL_COUNT 32
197 #define kill(pid,sig) pgkill(pid,sig)
198 extern int pgkill(int pid, int sig);
201 extern int pclose_check(FILE *stream);
203 /* Global variable holding time zone information. */
205 #define TIMEZONE_GLOBAL timezone
206 #define TZNAME_GLOBAL tzname
208 #define TIMEZONE_GLOBAL _timezone
209 #define TZNAME_GLOBAL _tzname
212 #if defined(WIN32) || defined(__CYGWIN__)
214 * Win32 doesn't have reliable rename/unlink during concurrent access,
215 * and we need special code to do symlinks.
217 extern int pgrename(const char *from, const char *to);
218 extern int pgunlink(const char *path);
220 /* Include this first so later includes don't see these defines */
221 #ifdef WIN32_CLIENT_ONLY
225 #define rename(from, to) pgrename(from, to)
226 #define unlink(path) pgunlink(path)
229 * Cygwin has its own symlinks which work on Win95/98/ME where
230 * junction points don't, so use it instead. We have no way of
231 * knowing what type of system Cygwin binaries will be run on.
232 * Note: Some CYGWIN includes might #define WIN32.
234 #if defined(WIN32) && !defined(__CYGWIN__)
235 extern int pgsymlink(const char *oldpath, const char *newpath);
237 #define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
239 #endif /* defined(WIN32) || defined(__CYGWIN__) */
241 extern void copydir(char *fromdir, char *todir, bool recurse);
243 extern bool rmtree(char *path, bool rmtopdir);
245 #if defined(WIN32) && !defined(__CYGWIN__)
247 /* open() replacement to allow delete of held files and passing
248 * of special options. */
249 #ifndef WIN32_CLIENT_ONLY
250 extern int win32_open(const char *, int,...);
252 #define open(a,b,...) win32_open(a,b,##__VA_ARGS__)
256 #define popen(a,b) _popen(a,b)
257 #define pclose(a) _pclose(a)
260 /* Missing rand functions */
261 extern long lrand48(void);
262 extern void srand48(long seed);
264 /* Last parameter not used */
265 extern int gettimeofday(struct timeval * tp, struct timezone * tzp);
269 * Win32 requires a special close for sockets and pipes, while on Unix
270 * close() does them all.
272 #define closesocket close
276 * Default "extern" declarations or macro substitutes for library routines.
277 * When necessary, these routines are provided by files in src/port/.
280 extern char *crypt(const char *key, const char *setting);
283 #if defined(bsdi) || defined(netbsd)
284 extern int fseeko(FILE *stream, off_t offset, int whence);
285 extern off_t ftello(FILE *stream);
289 #define fseeko(a, b, c) fseek(a, b, c)
290 #define ftello(a) ftell(a)
294 extern int getopt(int nargc, char *const * nargv, const char *ostr);
298 extern int isinf(double x);
302 extern double rint(double x);
305 #ifndef HAVE_INET_ATON
306 #ifndef WIN32_CLIENT_ONLY
307 #include <netinet/in.h>
308 #include <arpa/inet.h>
310 extern int inet_aton(const char *cp, struct in_addr * addr);
314 extern char *strdup(char const *);
318 extern long random(void);
321 #ifndef HAVE_UNSETENV
322 extern void unsetenv(const char *name);
326 extern void srandom(unsigned int seed);
330 extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
332 #if !defined(WIN32) || defined(__CYGWIN__)
333 extern int pqGetpwuid(uid_t uid, struct passwd * resultbuf, char *buffer,
334 size_t buflen, struct passwd ** result);
337 extern int pqGethostbyname(const char *name,
338 struct hostent * resultbuf,
339 char *buffer, size_t buflen,
340 struct hostent ** result,