1 /*-------------------------------------------------------------------------
4 * Header for src/port/ compatibility functions.
6 * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
7 * Portions Copyright (c) 1994, Regents of the University of California
11 *-------------------------------------------------------------------------
20 /* socket has a different definition on WIN32 */
24 #define PGINVALID_SOCKET (-1)
26 typedef SOCKET pgsocket;
28 #define PGINVALID_SOCKET INVALID_SOCKET
32 extern bool pg_set_noblock(pgsocket sock);
33 extern bool pg_set_block(pgsocket sock);
35 /* Portable path handling for Unix/Win32 (in path.c) */
37 extern char *first_dir_separator(const char *filename);
38 extern char *last_dir_separator(const char *filename);
39 extern char *first_path_var_separator(const char *pathlist);
40 extern void join_path_components(char *ret_path,
41 const char *head, const char *tail);
42 extern void canonicalize_path(char *path);
43 extern void make_native_path(char *path);
44 extern bool path_contains_parent_reference(const char *path);
45 extern bool path_is_prefix_of_path(const char *path1, const char *path2);
46 extern const char *get_progname(const char *argv0);
47 extern void get_share_path(const char *my_exec_path, char *ret_path);
48 extern void get_etc_path(const char *my_exec_path, char *ret_path);
49 extern void get_include_path(const char *my_exec_path, char *ret_path);
50 extern void get_pkginclude_path(const char *my_exec_path, char *ret_path);
51 extern void get_includeserver_path(const char *my_exec_path, char *ret_path);
52 extern void get_lib_path(const char *my_exec_path, char *ret_path);
53 extern void get_pkglib_path(const char *my_exec_path, char *ret_path);
54 extern void get_locale_path(const char *my_exec_path, char *ret_path);
55 extern void get_doc_path(const char *my_exec_path, char *ret_path);
56 extern void get_html_path(const char *my_exec_path, char *ret_path);
57 extern void get_man_path(const char *my_exec_path, char *ret_path);
58 extern bool get_home_path(char *ret_path);
59 extern void get_parent_directory(char *path);
62 extern char **pgfnames(const char *path);
63 extern void pgfnames_cleanup(char **filenames);
68 * By making this a macro we avoid needing to include path.c in libpq.
71 #define IS_DIR_SEP(ch) ((ch) == '/')
73 #define is_absolute_path(filename) \
75 IS_DIR_SEP((filename)[0]) \
78 #define IS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\')
81 * On Win32, a drive letter _not_ followed by a slash, e.g. 'E:abc', is
82 * relative to the cwd on that drive, or the drive's root directory
83 * if that drive has no cwd. Because the path itself cannot tell us
84 * which is the case, we have to assume the worst, i.e. that it is not
85 * absolute; this check is done by IS_DIR_SEP(filename[2]).
87 #define is_absolute_path(filename) \
89 IS_DIR_SEP((filename)[0]) || \
90 (isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \
91 IS_DIR_SEP((filename)[2])) \
95 /* Portable locale initialization (in exec.c) */
96 extern void set_pglocale_pgservice(const char *argv0, const char *app);
98 /* Portable way to find binaries (in exec.c) */
99 extern int find_my_exec(const char *argv0, char *retpath);
100 extern int find_other_exec(const char *argv0, const char *target,
101 const char *versionstr, char *retpath);
103 /* Windows security token manipulation (in exec.c) */
105 extern BOOL AddUserToTokenDacl(HANDLE hToken);
109 #if defined(WIN32) || defined(__CYGWIN__)
115 #if defined(WIN32) && !defined(__CYGWIN__)
116 #define DEVNULL "nul"
117 /* "con" does not work from the Msys 1.0.10 console (part of MinGW). */
120 #define DEVNULL "/dev/null"
121 #define DEVTTY "/dev/tty"
125 * Win32 needs double quotes at the beginning and end of system()
126 * strings. If not, it gets confused with multiple quoted strings.
127 * It also requires double-quotes around the executable name and
128 * any files used for redirection. Other args can use single-quotes.
130 * Generated using Win32 "CMD /?":
132 * 1. If all of the following conditions are met, then quote characters
133 * on the command line are preserved:
136 * - exactly two quote characters
137 * - no special characters between the two quote characters, where special
138 * is one of: &<>()@^|
139 * - there are one or more whitespace characters between the two quote
141 * - the string between the two quote characters is the name of an
144 * 2. Otherwise, old behavior is to see if the first character is a quote
145 * character and if so, strip the leading character and remove the last
146 * quote character on the command line, preserving any text after the last
149 #if defined(WIN32) && !defined(__CYGWIN__)
150 #define SYSTEMQUOTE "\""
152 #define SYSTEMQUOTE ""
155 /* Portable delay handling */
156 extern void pg_usleep(long microsec);
158 /* Portable SQL-like case-independent comparisons and conversions */
159 extern int pg_strcasecmp(const char *s1, const char *s2);
160 extern int pg_strncasecmp(const char *s1, const char *s2, size_t n);
161 extern unsigned char pg_toupper(unsigned char ch);
162 extern unsigned char pg_tolower(unsigned char ch);
164 #ifdef USE_REPL_SNPRINTF
167 * Versions of libintl >= 0.13 try to replace printf() and friends with
168 * macros to their own versions that understand the %$ format. We do the
169 * same, so disable their macros, if they exist.
190 * Versions of libintl >= 0.18? try to replace setlocale() with a macro
191 * to their own versions. Remove the macro, if it exists, because it
192 * ends up calling the wrong version when the backend and libintl use
193 * different versions of msvcrt.
195 #if defined(setlocale) && defined(WIN32)
199 extern int pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
201 pg_snprintf(char *str, size_t count, const char *fmt,...)
202 /* This extension allows gcc to check the format string */
203 __attribute__((format(printf, 3, 4)));
205 pg_sprintf(char *str, const char *fmt,...)
206 /* This extension allows gcc to check the format string */
207 __attribute__((format(printf, 2, 3)));
208 extern int pg_vfprintf(FILE *stream, const char *fmt, va_list args);
210 pg_fprintf(FILE *stream, const char *fmt,...)
211 /* This extension allows gcc to check the format string */
212 __attribute__((format(printf, 2, 3)));
214 pg_printf(const char *fmt,...)
215 /* This extension allows gcc to check the format string */
216 __attribute__((format(printf, 1, 2)));
219 * The GCC-specific code below prevents the __attribute__(... 'printf')
220 * above from being replaced, and this is required because gcc doesn't
221 * know anything about pg_printf.
224 #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__)
225 #define snprintf(...) pg_snprintf(__VA_ARGS__)
226 #define sprintf(...) pg_sprintf(__VA_ARGS__)
227 #define vfprintf(...) pg_vfprintf(__VA_ARGS__)
228 #define fprintf(...) pg_fprintf(__VA_ARGS__)
229 #define printf(...) pg_printf(__VA_ARGS__)
231 #define vsnprintf pg_vsnprintf
232 #define snprintf pg_snprintf
233 #define sprintf pg_sprintf
234 #define vfprintf pg_vfprintf
235 #define fprintf pg_fprintf
236 #define printf pg_printf
238 #endif /* USE_REPL_SNPRINTF */
240 /* Portable prompt handling */
241 extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
244 * WIN32 doesn't allow descriptors returned by pipe() to be used in select(),
245 * so for that platform we use socket() instead of pipe().
246 * There is some inconsistency here because sometimes we require pg*, like
247 * pgpipe, but in other cases we define rename to pgrename just on Win32.
251 * The function prototypes are not supplied because every C file
252 * includes this file.
254 #define pgpipe(a) pipe(a)
255 #define piperead(a,b,c) read(a,b,c)
256 #define pipewrite(a,b,c) write(a,b,c)
258 extern int pgpipe(int handles[2]);
259 extern int piperead(int s, char *buf, int len);
261 #define pipewrite(a,b,c) send(a,b,c,0)
263 #define PG_SIGNAL_COUNT 32
264 #define kill(pid,sig) pgkill(pid,sig)
265 extern int pgkill(int pid, int sig);
268 extern int pclose_check(FILE *stream);
270 /* Global variable holding time zone information. */
272 #define TIMEZONE_GLOBAL timezone
273 #define TZNAME_GLOBAL tzname
275 #define TIMEZONE_GLOBAL _timezone
276 #define TZNAME_GLOBAL _tzname
279 #if defined(WIN32) || defined(__CYGWIN__)
281 * Win32 doesn't have reliable rename/unlink during concurrent access.
283 extern int pgrename(const char *from, const char *to);
284 extern int pgunlink(const char *path);
286 /* Include this first so later includes don't see these defines */
287 #ifdef WIN32_ONLY_COMPILER
291 #define rename(from, to) pgrename(from, to)
292 #define unlink(path) pgunlink(path)
293 #endif /* defined(WIN32) || defined(__CYGWIN__) */
296 * Win32 also doesn't have symlinks, but we can emulate them with
297 * junction points on newer Win32 versions.
299 * Cygwin has its own symlinks which work on Win95/98/ME where
300 * junction points don't, so use those instead. We have no way of
301 * knowing what type of system Cygwin binaries will be run on.
302 * Note: Some CYGWIN includes might #define WIN32.
304 #if defined(WIN32) && !defined(__CYGWIN__)
305 extern int pgsymlink(const char *oldpath, const char *newpath);
306 extern int pgreadlink(const char *path, char *buf, size_t size);
307 extern bool pgwin32_is_junction(char *path);
309 #define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
310 #define readlink(path, buf, size) pgreadlink(path, buf, size)
313 extern bool rmtree(const char *path, bool rmtopdir);
316 * stat() is not guaranteed to set the st_size field on win32, so we
317 * redefine it to our own implementation that is.
319 * We must pull in sys/stat.h here so the system header definition
320 * goes in first, and we redefine that, and not the other way around.
322 * Some frontends don't need the size from stat, so if UNSAFE_STAT_OK
323 * is defined we don't bother with this.
325 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(UNSAFE_STAT_OK)
326 #include <sys/stat.h>
327 extern int pgwin32_safestat(const char *path, struct stat * buf);
329 #define stat(a,b) pgwin32_safestat(a,b)
332 #if defined(WIN32) && !defined(__CYGWIN__)
335 * open() and fopen() replacements to allow deletion of open files and
336 * passing of other special options.
338 #define O_DIRECT 0x80000000
339 extern int pgwin32_open(const char *, int,...);
340 extern FILE *pgwin32_fopen(const char *, const char *);
343 #define open(a,b,c) pgwin32_open(a,b,c)
344 #define fopen(a,b) pgwin32_fopen(a,b)
348 #define popen(a,b) _popen(a,b)
351 #define pclose(a) _pclose(a)
354 /* New versions of MingW have gettimeofday, old mingw and msvc don't */
355 #ifndef HAVE_GETTIMEOFDAY
356 /* Last parameter not used */
357 extern int gettimeofday(struct timeval * tp, struct timezone * tzp);
362 * Win32 requires a special close for sockets and pipes, while on Unix
363 * close() does them all.
365 #define closesocket close
369 * Default "extern" declarations or macro substitutes for library routines.
370 * When necessary, these routines are provided by files in src/port/.
373 extern char *crypt(const char *key, const char *setting);
376 /* WIN32 handled in port/win32.h */
378 #define pgoff_t off_t
379 #if defined(__bsdi__) || defined(__NetBSD__)
380 extern int fseeko(FILE *stream, off_t offset, int whence);
381 extern off_t ftello(FILE *stream);
386 /* we assume all of these are present or missing together */
387 extern double erand48(unsigned short xseed[3]);
388 extern long lrand48(void);
389 extern void srand48(long seed);
393 #define fseeko(a, b, c) fseek(a, b, c)
394 #define ftello(a) ftell(a)
398 extern int getopt(int nargc, char *const * nargv, const char *ostr);
402 extern int isinf(double x);
406 extern double rint(double x);
409 #ifndef HAVE_INET_ATON
410 #include <netinet/in.h>
411 #include <arpa/inet.h>
412 extern int inet_aton(const char *cp, struct in_addr * addr);
416 extern char *strdup(const char *str);
419 #if !HAVE_DECL_STRLCAT
420 extern size_t strlcat(char *dst, const char *src, size_t siz);
423 #if !HAVE_DECL_STRLCPY
424 extern size_t strlcpy(char *dst, const char *src, size_t siz);
427 #if !defined(HAVE_RANDOM) && !defined(__BORLANDC__)
428 extern long random(void);
431 #ifndef HAVE_UNSETENV
432 extern void unsetenv(const char *name);
436 extern void srandom(unsigned int seed);
440 extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
442 #if !defined(WIN32) || defined(__CYGWIN__)
443 extern int pqGetpwuid(uid_t uid, struct passwd * resultbuf, char *buffer,
444 size_t buflen, struct passwd ** result);
447 extern int pqGethostbyname(const char *name,
448 struct hostent * resultbuf,
449 char *buffer, size_t buflen,
450 struct hostent ** result,
453 extern void pg_qsort(void *base, size_t nel, size_t elsize,
454 int (*cmp) (const void *, const void *));
456 #define qsort(a,b,c,d) pg_qsort(a,b,c,d)
458 typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg);
460 extern void qsort_arg(void *base, size_t nel, size_t elsize,
461 qsort_arg_comparator cmp, void *arg);
463 /* port/chklocale.c */
464 extern int pg_get_encoding_from_locale(const char *ctype, bool write_message);
466 /* port/inet_net_ntop.c */
467 extern char *inet_net_ntop(int af, const void *src, int bits,
468 char *dst, size_t size);
470 /* port/pgcheckdir.c */
471 extern int pg_check_dir(const char *dir);
473 /* port/pgmkdirp.c */
474 extern int pg_mkdir_p(char *path, int omode);
476 #endif /* PG_PORT_H */