1 /*-------------------------------------------------------------------------
4 * Header for src/port/ compatibility functions.
6 * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
7 * Portions Copyright (c) 1994, Regents of the University of California
9 * $PostgreSQL: pgsql/src/include/port.h,v 1.90 2006/03/05 15:58:53 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__)
87 /* "con" does not work from the Msys 1.0.10 console (part of MinGW). */
90 #define DEVNULL "/dev/null"
91 #define DEVTTY "/dev/tty"
95 * Win32 needs double quotes at the beginning and end of system()
96 * strings. If not, it gets confused with multiple quoted strings.
97 * It also requires double-quotes around the executable name and
98 * any files used for redirection. Other args can use single-quotes.
100 * See the "Notes" section about quotes at:
101 * http://home.earthlink.net/~rlively/MANUALS/COMMANDS/C/CMD.HTM
103 #if defined(WIN32) && !defined(__CYGWIN__)
104 #define SYSTEMQUOTE "\""
106 #define SYSTEMQUOTE ""
109 /* Portable delay handling */
110 extern void pg_usleep(long microsec);
112 /* Portable SQL-like case-independent comparisons and conversions */
113 extern int pg_strcasecmp(const char *s1, const char *s2);
114 extern int pg_strncasecmp(const char *s1, const char *s2, size_t n);
115 extern unsigned char pg_toupper(unsigned char ch);
116 extern unsigned char pg_tolower(unsigned char ch);
118 #ifdef USE_REPL_SNPRINTF
121 * Versions of libintl >= 0.13 try to replace printf() and friends with
122 * macros to their own versions that understand the %$ format. We do the
123 * same, so disable their macros, if they exist.
141 extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
143 pg_snprintf(char *str, size_t count, const char *fmt,...)
144 /* This extension allows gcc to check the format string */
145 __attribute__((format(printf, 3, 4)));
147 pg_sprintf(char *str, const char *fmt,...)
148 /* This extension allows gcc to check the format string */
149 __attribute__((format(printf, 2, 3)));
151 pg_fprintf(FILE *stream, const char *fmt,...)
152 /* This extension allows gcc to check the format string */
153 __attribute__((format(printf, 2, 3)));
155 pg_printf(const char *fmt,...)
156 /* This extension allows gcc to check the format string */
157 __attribute__((format(printf, 1, 2)));
160 * The GCC-specific code below prevents the __attribute__(... 'printf')
161 * above from being replaced, and this is required because gcc doesn't
162 * know anything about pg_printf.
165 #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__)
166 #define snprintf(...) pg_snprintf(__VA_ARGS__)
167 #define sprintf(...) pg_sprintf(__VA_ARGS__)
168 #define fprintf(...) pg_fprintf(__VA_ARGS__)
169 #define printf(...) pg_printf(__VA_ARGS__)
171 #define vsnprintf pg_vsnprintf
172 #define snprintf pg_snprintf
173 #define sprintf pg_sprintf
174 #define fprintf pg_fprintf
175 #define printf pg_printf
178 #endif /* USE_REPL_SNPRINTF */
180 /* Portable prompt handling */
181 extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
184 * WIN32 doesn't allow descriptors returned by pipe() to be used in select(),
185 * so for that platform we use socket() instead of pipe().
186 * There is some inconsistency here because sometimes we require pg*, like
187 * pgpipe, but in other cases we define rename to pgrename just on Win32.
190 #define pgpipe(a) pipe(a)
191 #define piperead(a,b,c) read(a,b,c)
192 #define pipewrite(a,b,c) write(a,b,c)
194 extern int pgpipe(int handles[2]);
195 extern int piperead(int s, char *buf, int len);
197 #define pipewrite(a,b,c) send(a,b,c,0)
199 #define PG_SIGNAL_COUNT 32
200 #define kill(pid,sig) pgkill(pid,sig)
201 extern int pgkill(int pid, int sig);
204 extern int pclose_check(FILE *stream);
206 /* Global variable holding time zone information. */
208 #define TIMEZONE_GLOBAL timezone
209 #define TZNAME_GLOBAL tzname
211 #define TIMEZONE_GLOBAL _timezone
212 #define TZNAME_GLOBAL _tzname
215 #if defined(WIN32) || defined(__CYGWIN__)
217 * Win32 doesn't have reliable rename/unlink during concurrent access,
218 * and we need special code to do symlinks.
220 extern int pgrename(const char *from, const char *to);
221 extern int pgunlink(const char *path);
223 /* Include this first so later includes don't see these defines */
224 #ifdef WIN32_CLIENT_ONLY
228 #define rename(from, to) pgrename(from, to)
229 #define unlink(path) pgunlink(path)
232 * Cygwin has its own symlinks which work on Win95/98/ME where
233 * junction points don't, so use it instead. We have no way of
234 * knowing what type of system Cygwin binaries will be run on.
235 * Note: Some CYGWIN includes might #define WIN32.
237 #if defined(WIN32) && !defined(__CYGWIN__)
238 extern int pgsymlink(const char *oldpath, const char *newpath);
240 #define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
242 #endif /* defined(WIN32) || defined(__CYGWIN__) */
244 extern void copydir(char *fromdir, char *todir, bool recurse);
246 extern bool rmtree(char *path, bool rmtopdir);
248 #if defined(WIN32) && !defined(__CYGWIN__)
250 /* open() replacement to allow delete of held files and passing
251 * of special options. */
252 #ifndef WIN32_CLIENT_ONLY
253 extern int win32_open(const char *, int,...);
255 #define open(a,b,...) win32_open(a,b,##__VA_ARGS__)
259 #define popen(a,b) _popen(a,b)
260 #define pclose(a) _pclose(a)
263 /* Missing rand functions */
264 extern long lrand48(void);
265 extern void srand48(long seed);
267 /* Last parameter not used */
268 extern int gettimeofday(struct timeval * tp, struct timezone * tzp);
272 * Win32 requires a special close for sockets and pipes, while on Unix
273 * close() does them all.
275 #define closesocket close
279 * Default "extern" declarations or macro substitutes for library routines.
280 * When necessary, these routines are provided by files in src/port/.
283 extern char *crypt(const char *key, const char *setting);
286 #if defined(bsdi) || defined(netbsd)
287 extern int fseeko(FILE *stream, off_t offset, int whence);
288 extern off_t ftello(FILE *stream);
292 #define fseeko(a, b, c) fseek(a, b, c)
293 #define ftello(a) ftell(a)
297 extern int getopt(int nargc, char *const * nargv, const char *ostr);
301 extern int isinf(double x);
305 extern double rint(double x);
308 #ifndef HAVE_INET_ATON
309 #ifndef WIN32_CLIENT_ONLY
310 #include <netinet/in.h>
311 #include <arpa/inet.h>
313 extern int inet_aton(const char *cp, struct in_addr * addr);
317 extern char *strdup(char const *);
321 extern long random(void);
324 #ifndef HAVE_UNSETENV
325 extern void unsetenv(const char *name);
329 extern void srandom(unsigned int seed);
333 extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
335 #if !defined(WIN32) || defined(__CYGWIN__)
336 extern int pqGetpwuid(uid_t uid, struct passwd * resultbuf, char *buffer,
337 size_t buflen, struct passwd ** result);
340 extern int pqGethostbyname(const char *name,
341 struct hostent * resultbuf,
342 char *buffer, size_t buflen,
343 struct hostent ** result,