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port.h
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/*------------------------------------------------------------------------- * * port.h * Header for src/port/ compatibility functions. * * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/port.h * *------------------------------------------------------------------------- */ #ifndef PG_PORT_H #define PG_PORT_H #include <ctype.h> #include <netdb.h> #include <pwd.h> /* socket has a different definition on WIN32 */ #ifndef WIN32 typedef int pgsocket; #define PGINVALID_SOCKET (-1) #else typedef SOCKET pgsocket; #define PGINVALID_SOCKET INVALID_SOCKET #endif /* non-blocking */ extern bool pg_set_noblock(pgsocket sock); extern bool pg_set_block(pgsocket sock); /* Portable path handling for Unix/Win32 (in path.c) */ extern bool has_drive_prefix(const char *filename); extern char *first_dir_separator(const char *filename); extern char *last_dir_separator(const char *filename); extern char *first_path_var_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 bool path_contains_parent_reference(const char *path); extern bool path_is_relative_and_below_cwd(const char *path); extern bool path_is_prefix_of_path(const char *path1, const char *path2); 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 get_doc_path(const char *my_exec_path, char *ret_path); extern void get_html_path(const char *my_exec_path, char *ret_path); extern void get_man_path(const char *my_exec_path, char *ret_path); extern bool get_home_path(char *ret_path); extern void get_parent_directory(char *path); /* port/dirmod.c */ extern char **pgfnames(const char *path); extern void pgfnames_cleanup(char **filenames); /* * is_absolute_path * * By making this a macro we avoid needing to include path.c in libpq. */ #ifndef WIN32 #define IS_DIR_SEP(ch) ((ch) == '/') #define is_absolute_path(filename) \ ( \ IS_DIR_SEP((filename)[0]) \ ) #else #define IS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\') /* See path_is_relative_and_below_cwd() for how we handle 'E:abc'. */ #define is_absolute_path(filename) \ ( \ IS_DIR_SEP((filename)[0]) || \ (isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \ IS_DIR_SEP((filename)[2])) \ ) #endif /* Portable locale initialization (in exec.c) */ extern void set_pglocale_pgservice(const char *argv0, const char *app); /* Portable way to find binaries (in exec.c) */ 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); /* Windows security token manipulation (in exec.c) */ #ifdef WIN32 extern BOOL AddUserToTokenDacl(HANDLE hToken); #endif #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. * * Generated using Win32 "CMD /?": * * 1. If all of the following conditions are met, then quote characters * on the command line are preserved: * * - no /S switch * - exactly two quote characters * - no special characters between the two quote characters, where special * is one of: &<>()@^| * - there are one or more whitespace characters between the two quote * characters * - the string between the two quote characters is the name of an * executable file. * * 2. Otherwise, old behavior is to see if the first character is a quote * character and if so, strip the leading character and remove the last * quote character on the command line, preserving any text after the last * quote character. */ #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); extern unsigned char pg_ascii_toupper(unsigned char ch); extern unsigned char pg_ascii_tolower(unsigned char ch); #ifdef USE_REPL_SNPRINTF /* * Versions of libintl >= 0.13 try to replace printf() and friends with * macros to their own versions that understand the %$ format. We do the * same, so disable their macros, if they exist. */ #ifdef vsnprintf #undef vsnprintf #endif #ifdef snprintf #undef snprintf #endif #ifdef sprintf #undef sprintf #endif #ifdef vfprintf #undef vfprintf #endif #ifdef fprintf #undef fprintf #endif #ifdef printf #undef printf #endif 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(PG_PRINTF_ATTRIBUTE, 3, 4))); extern int pg_sprintf(char *str, const char *fmt,...) /* This extension allows gcc to check the format string */ __attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3))); extern int pg_vfprintf(FILE *stream, const char *fmt, va_list args); extern int pg_fprintf(FILE *stream, const char *fmt,...) /* This extension allows gcc to check the format string */ __attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3))); extern int pg_printf(const char *fmt,...) /* This extension allows gcc to check the format string */ __attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2))); /* * The GCC-specific code below prevents the __attribute__(... 'printf') * above from being replaced, and this is required because gcc doesn't * know anything about pg_printf. */ #ifdef __GNUC__ #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__) #define snprintf(...) pg_snprintf(__VA_ARGS__) #define sprintf(...) pg_sprintf(__VA_ARGS__) #define vfprintf(...) pg_vfprintf(__VA_ARGS__) #define fprintf(...) pg_fprintf(__VA_ARGS__) #define printf(...) pg_printf(__VA_ARGS__) #else #define vsnprintf pg_vsnprintf #define snprintf pg_snprintf #define sprintf pg_sprintf #define vfprintf pg_vfprintf #define fprintf pg_fprintf #define printf pg_printf #endif #endif /* USE_REPL_SNPRINTF */ #if defined(WIN32) /* * Versions of libintl >= 0.18? try to replace setlocale() with a macro * to their own versions. Remove the macro, if it exists, because it * ends up calling the wrong version when the backend and libintl use * different versions of msvcrt. */ #if defined(setlocale) #undef setlocale #endif /* * Define our own wrapper macro around setlocale() to work around bugs in * Windows' native setlocale() function. */ extern char *pgwin32_setlocale(int category, const char *locale); #define setlocale(a,b) pgwin32_setlocale(a,b) #endif /* WIN32 */ /* Portable prompt handling */ extern char *simple_prompt(const char *prompt, int maxlen, bool echo); #ifdef WIN32 #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. */ 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_ONLY_COMPILER #include <io.h> #endif #define rename(from, to) pgrename(from, to) #define unlink(path) pgunlink(path) #endif /* defined(WIN32) || defined(__CYGWIN__) */ /* * Win32 also doesn't have symlinks, but we can emulate them with * junction points on newer Win32 versions. * * Cygwin has its own symlinks which work on Win95/98/ME where * junction points don't, so use those 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); extern int pgreadlink(const char *path, char *buf, size_t size); extern bool pgwin32_is_junction(char *path); #define symlink(oldpath, newpath) pgsymlink(oldpath, newpath) #define readlink(path, buf, size) pgreadlink(path, buf, size) #endif extern bool rmtree(const char *path, bool rmtopdir); /* * stat() is not guaranteed to set the st_size field on win32, so we * redefine it to our own implementation that is. * * We must pull in sys/stat.h here so the system header definition * goes in first, and we redefine that, and not the other way around. * * Some frontends don't need the size from stat, so if UNSAFE_STAT_OK * is defined we don't bother with this. */ #if defined(WIN32) && !defined(__CYGWIN__) && !defined(UNSAFE_STAT_OK) #include <sys/stat.h> extern int pgwin32_safestat(const char *path, struct stat * buf); #define stat(a,b) pgwin32_safestat(a,b) #endif #if defined(WIN32) && !defined(__CYGWIN__) /* * open() and fopen() replacements to allow deletion of open files and * passing of other special options. */ #define O_DIRECT 0x80000000 extern int pgwin32_open(const char *, int,...); extern FILE *pgwin32_fopen(const char *, const char *); #ifndef FRONTEND #define open(a,b,c) pgwin32_open(a,b,c) #define fopen(a,b) pgwin32_fopen(a,b) #endif #ifndef popen #define popen(a,b) _popen(a,b) #endif #ifndef pclose #define pclose(a) _pclose(a) #endif /* New versions of MingW have gettimeofday, old mingw and msvc don't */ #ifndef HAVE_GETTIMEOFDAY /* Last parameter not used */ extern int gettimeofday(struct timeval * tp, struct timezone * tzp); #endif #else /* !WIN32 */ /* * Win32 requires a special close for sockets and pipes, while on Unix * close() does them all. */ #define closesocket close #endif /* WIN32 */ /* * On Windows, setvbuf() does not support _IOLBF mode, and interprets that * as _IOFBF. To add insult to injury, setvbuf(file, NULL, _IOFBF, 0) * crashes outright if "parameter validation" is enabled. Therefore, in * places where we'd like to select line-buffered mode, we fall back to * unbuffered mode instead on Windows. Always use PG_IOLBF not _IOLBF * directly in order to implement this behavior. */ #ifndef WIN32 #define PG_IOLBF _IOLBF #else #define PG_IOLBF _IONBF #endif /* * 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 /* WIN32 handled in port/win32.h */ #ifndef WIN32 #define pgoff_t off_t #ifdef __NetBSD__ extern int fseeko(FILE *stream, off_t offset, int whence); extern off_t ftello(FILE *stream); #endif #endif extern double pg_erand48(unsigned short xseed[3]); extern long pg_lrand48(void); extern void pg_srand48(long seed); #ifndef HAVE_FLS extern int fls(int mask); #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 #if !defined(HAVE_GETPEEREID) && !defined(WIN32) extern int getpeereid(int sock, uid_t *uid, gid_t *gid); #endif #ifndef HAVE_ISINF extern int isinf(double x); #endif #ifndef HAVE_RINT extern double rint(double x); #endif #ifndef HAVE_INET_ATON #include <netinet/in.h> #include <arpa/inet.h> extern int inet_aton(const char *cp, struct in_addr * addr); #endif #if !HAVE_DECL_STRLCAT extern size_t strlcat(char *dst, const char *src, size_t siz); #endif #if !HAVE_DECL_STRLCPY extern size_t strlcpy(char *dst, const char *src, size_t siz); #endif #if !defined(HAVE_RANDOM) && !defined(__BORLANDC__) 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); extern void pg_qsort(void *base, size_t nel, size_t elsize, int (*cmp) (const void *, const void *)); extern int pg_qsort_strcmp(const void *a, const void *b); #define qsort(a,b,c,d) pg_qsort(a,b,c,d) typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg); extern void qsort_arg(void *base, size_t nel, size_t elsize, qsort_arg_comparator cmp, void *arg); /* port/chklocale.c */ extern int pg_get_encoding_from_locale(const char *ctype, bool write_message); /* port/inet_net_ntop.c */ extern char *inet_net_ntop(int af, const void *src, int bits, char *dst, size_t size); /* port/pgcheckdir.c */ extern int pg_check_dir(const char *dir); /* port/pgmkdirp.c */ extern int pg_mkdir_p(char *path, int omode); /* port/mkdtemp.c */ extern char *mkdtemp(char *path); /* port/pqsignal.c */ typedef void (*pqsigfunc) (int signo); extern pqsigfunc pqsignal(int signo, pqsigfunc func); /* port/quotes.c */ extern char *escape_single_quotes_ascii(const char *src); /* port/wait_error.c */ extern char *wait_result_to_str(int exit_status); #endif /* PG_PORT_H */