tclUnixPort.h Go to the documentation of this file. /* * tclUnixPort.h -- * * This header file handles porting issues that occur because * of differences between systems. It reads in UNIX-related * header files and sets up UNIX-related macros for Tcl's UNIX * core. It should be the only file that contains #ifdefs to * handle different flavors of UNIX. This file sets up the * union of all UNIX-related things needed by any of the Tcl * core files. This file depends on configuration #defines such * as NO_DIRENT_H that are set up by the "configure" script. * * Much of the material in this file was originally contributed * by Karl Lehenbauer, Mark Diekhans and Peter da Silva. * * Copyright (c) 1991-1994 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tclUnixPort.h,v 1.61 2007/12/13 15:28:42 dgp Exp $ */ #ifndef _TCLUNIXPORT #define _TCLUNIXPORT /* *--------------------------------------------------------------------------- * The following sets of #includes and #ifdefs are required to get Tcl to * compile under the various flavors of unix. *--------------------------------------------------------------------------- */ #include <errno.h> #include <fcntl.h> #ifdef HAVE_NET_ERRNO_H # include <net/errno.h> #endif #include <pwd.h> #include <signal.h> #ifdef HAVE_SYS_PARAM_H # include <sys/param.h> #endif #include <sys/types.h> #ifdef USE_DIRENT2_H # include "../compat/dirent2.h" #else #ifdef NO_DIRENT_H # include "../compat/dirent.h" #else # include <dirent.h> #endif #endif #ifdef HAVE_STRUCT_DIRENT64 typedef struct dirent64 Tcl_DirEntry; # define TclOSreaddir readdir64 #else typedef struct dirent Tcl_DirEntry; # define TclOSreaddir readdir #endif #ifdef HAVE_TYPE_OFF64_T typedef off64_t Tcl_SeekOffset; # define TclOSseek lseek64 # define TclOSopen open64 #else typedef off_t Tcl_SeekOffset; # define TclOSseek lseek # define TclOSopen open #endif #ifdef HAVE_STRUCT_STAT64 # define TclOSstat stat64 # define TclOSlstat lstat64 #else # define TclOSstat stat # define TclOSlstat lstat #endif #include <sys/file.h> #ifdef HAVE_SYS_SELECT_H # include <sys/select.h> #endif #include <sys/stat.h> #if TIME_WITH_SYS_TIME # include <sys/time.h> # include <time.h> #else #if HAVE_SYS_TIME_H # include <sys/time.h> #else # include <time.h> #endif #endif #ifndef NO_SYS_WAIT_H # include <sys/wait.h> #endif #if HAVE_INTTYPES_H # include <inttypes.h> #endif #if HAVE_STDINT_H # include <stdint.h> #endif #ifdef HAVE_UNISTD_H # include <unistd.h> #else # include "../compat/unistd.h" #endif #ifdef USE_FIONBIO /* * Not using the Posix fcntl(...,O_NONBLOCK,...) interface, instead * we are using ioctl(..,FIONBIO,..). */ # ifdef HAVE_SYS_FILIO_H # include <sys/filio.h> /* For FIONBIO. */ # endif # ifdef HAVE_SYS_IOCTL_H # include <sys/ioctl.h> /* For FIONBIO. */ # endif #endif /* USE_FIONBIO */ #include <utime.h> /* * Socket support stuff: This likely needs more work to parameterize for * each system. */ #include <sys/socket.h> /* struct sockaddr, SOCK_STREAM, ... */ #ifndef NO_UNAME # include <sys/utsname.h> /* uname system call. */ #endif #include <netinet/in.h> /* struct in_addr, struct sockaddr_in */ #include <arpa/inet.h> /* inet_ntoa() */ #include <netdb.h> /* gethostbyname() */ /* * Some platforms (e.g. SunOS) don't define FLT_MAX and FLT_MIN, so we * look for an alternative definition. If no other alternative is available * we use a reasonable guess. */ #ifndef NO_FLOAT_H # include <float.h> #else #ifndef NO_VALUES_H # include <values.h> #endif #endif #ifndef FLT_MAX # ifdef MAXFLOAT # define FLT_MAX MAXFLOAT # else # define FLT_MAX 3.402823466E+38F # endif #endif #ifndef FLT_MIN # ifdef MINFLOAT # define FLT_MIN MINFLOAT # else # define FLT_MIN 1.175494351E-38F # endif #endif /* * NeXT doesn't define O_NONBLOCK, so #define it here if necessary. */ #ifndef O_NONBLOCK # define O_NONBLOCK 0x80 #endif /* * HPUX needs the flag O_NONBLOCK to get the right non-blocking I/O * semantics, while most other systems need O_NDELAY. Define the * constant NBIO_FLAG to be one of these */ #ifdef HPUX # define NBIO_FLAG O_NONBLOCK #else # define NBIO_FLAG O_NDELAY #endif /* * The type of the status returned by wait varies from UNIX system * to UNIX system. The macro below defines it: */ #ifdef _AIX # define WAIT_STATUS_TYPE pid_t #else #ifndef NO_UNION_WAIT # define WAIT_STATUS_TYPE union wait #else # define WAIT_STATUS_TYPE int #endif #endif /* * Supply definitions for macros to query wait status, if not already * defined in header files above. */ #ifndef WIFEXITED # define WIFEXITED(stat) (((*((int *) &(stat))) & 0xff) == 0) #endif #ifndef WEXITSTATUS # define WEXITSTATUS(stat) (((*((int *) &(stat))) >> 8) & 0xff) #endif #ifndef WIFSIGNALED # define WIFSIGNALED(stat) (((*((int *) &(stat)))) && ((*((int *) &(stat))) == ((*((int *) &(stat))) & 0x00ff))) #endif #ifndef WTERMSIG # define WTERMSIG(stat) ((*((int *) &(stat))) & 0x7f) #endif #ifndef WIFSTOPPED # define WIFSTOPPED(stat) (((*((int *) &(stat))) & 0xff) == 0177) #endif #ifndef WSTOPSIG # define WSTOPSIG(stat) (((*((int *) &(stat))) >> 8) & 0xff) #endif /* * Define constants for waitpid() system call if they aren't defined * by a system header file. */ #ifndef WNOHANG # define WNOHANG 1 #endif #ifndef WUNTRACED # define WUNTRACED 2 #endif /* * Supply macros for seek offsets, if they're not already provided by * an include file. */ #ifndef SEEK_SET # define SEEK_SET 0 #endif #ifndef SEEK_CUR # define SEEK_CUR 1 #endif #ifndef SEEK_END # define SEEK_END 2 #endif /* * The stuff below is needed by the "time" command. If this system has no * gettimeofday call, then must use times and the CLK_TCK #define (from * sys/param.h) to compute elapsed time. Unfortunately, some systems only * have HZ and no CLK_TCK, and some might not even have HZ. */ #ifdef NO_GETTOD # include <sys/times.h> # include <sys/param.h> # ifndef CLK_TCK # ifdef HZ # define CLK_TCK HZ # else # define CLK_TCK 60 # endif # endif #else # ifdef HAVE_BSDGETTIMEOFDAY # define gettimeofday BSDgettimeofday # endif #endif #ifdef GETTOD_NOT_DECLARED EXTERN int gettimeofday _ANSI_ARGS_((struct timeval *tp, struct timezone *tzp)); #endif /* * Define access mode constants if they aren't already defined. */ #ifndef F_OK # define F_OK 00 #endif #ifndef X_OK # define X_OK 01 #endif #ifndef W_OK # define W_OK 02 #endif #ifndef R_OK # define R_OK 04 #endif /* * Define FD_CLOEEXEC (the close-on-exec flag bit) if it isn't * already defined. */ #ifndef FD_CLOEXEC # define FD_CLOEXEC 1 #endif /* * On systems without symbolic links (i.e. S_IFLNK isn't defined) * define "lstat" to use "stat" instead. */ #ifndef S_IFLNK # undef TclOSlstat # define lstat stat # define lstat64 stat64 # define TclOSlstat TclOSstat #endif /* * Define macros to query file type bits, if they're not already * defined. */ #ifndef S_ISREG # ifdef S_IFREG # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) # else # define S_ISREG(m) 0 # endif #endif /* !S_ISREG */ #ifndef S_ISDIR # ifdef S_IFDIR # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) # else # define S_ISDIR(m) 0 # endif #endif /* !S_ISDIR */ #ifndef S_ISCHR # ifdef S_IFCHR # define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) # else # define S_ISCHR(m) 0 # endif #endif /* !S_ISCHR */ #ifndef S_ISBLK # ifdef S_IFBLK # define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) # else # define S_ISBLK(m) 0 # endif #endif /* !S_ISBLK */ #ifndef S_ISFIFO # ifdef S_IFIFO # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) # else # define S_ISFIFO(m) 0 # endif #endif /* !S_ISFIFO */ #ifndef S_ISLNK # ifdef S_IFLNK # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) # else # define S_ISLNK(m) 0 # endif #endif /* !S_ISLNK */ #ifndef S_ISSOCK # ifdef S_IFSOCK # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) # else # define S_ISSOCK(m) 0 # endif #endif /* !S_ISSOCK */ /* * Make sure that MAXPATHLEN and MAXNAMLEN are defined. */ #ifndef MAXPATHLEN # ifdef PATH_MAX # define MAXPATHLEN PATH_MAX # else # define MAXPATHLEN 2048 # endif #endif #ifndef MAXNAMLEN # ifdef NAME_MAX # define MAXNAMLEN NAME_MAX # else # define MAXNAMLEN 255 # endif #endif /* * Make sure that L_tmpnam is defined. */ #ifndef L_tmpnam # define L_tmpnam 100 #endif /* * The following macro defines the type of the mask arguments to * select: */ #ifndef NO_FD_SET # define SELECT_MASK fd_set #else /* NO_FD_SET */ # ifndef _AIX typedef long fd_mask; # endif /* !AIX */ # if defined(_IBMR2) # define SELECT_MASK void # else /* !defined(_IBMR2) */ # define SELECT_MASK int # endif /* defined(_IBMR2) */ #endif /* !NO_FD_SET */ /* * Define "NBBY" (number of bits per byte) if it's not already defined. */ #ifndef NBBY # define NBBY 8 #endif /* * The following macro defines the number of fd_masks in an fd_set: */ #ifndef FD_SETSIZE # ifdef OPEN_MAX # define FD_SETSIZE OPEN_MAX # else # define FD_SETSIZE 256 # endif #endif /* FD_SETSIZE */ #if !defined(howmany) # define howmany(x, y) (((x)+((y)-1))/(y)) #endif /* !defined(howmany) */ #ifndef NFDBITS # define NFDBITS NBBY*sizeof(fd_mask) #endif /* NFDBITS */ #define MASK_SIZE howmany(FD_SETSIZE, NFDBITS) /* * Not all systems declare the errno variable in errno.h. so this * file does it explicitly. The list of system error messages also * isn't generally declared in a header file anywhere. */ #ifdef NO_ERRNO extern int errno; #endif /* NO_ERRNO */ /* * Not all systems declare all the errors that Tcl uses! Provide some * work-arounds... */ #ifndef EOVERFLOW # ifdef EFBIG # define EOVERFLOW EFBIG # else /* !EFBIG */ # define EOVERFLOW EINVAL # endif /* EFBIG */ #endif /* EOVERFLOW */ /* * Variables provided by the C library: */ #if defined(__APPLE__) && defined(__DYNAMIC__) # include <crt_externs.h> # define environ (*_NSGetEnviron()) # define USE_PUTENV 1 #else # if defined(_sgi) || defined(__sgi) # define environ _environ # endif extern char **environ; #endif /* * At present (12/91) not all stdlib.h implementations declare strtod. * The declaration below is here to ensure that it's declared, so that * the compiler won't take the default approach of assuming it returns * an int. There's no ANSI prototype for it because there would end * up being too many conflicts with slightly-different prototypes. */ #ifdef NO_STDLIB_H extern double strtod(); #endif /* * There is no platform-specific panic routine for Unix in the Tcl internals. */ #define TclpPanic ((Tcl_PanicProc *) NULL) /* * Darwin specifc configure overrides. */ #ifdef __APPLE__ /* * Support for fat compiles: configure runs only once for multiple architectures */ # if defined(__LP64__) && defined (NO_COREFOUNDATION_64) # undef HAVE_COREFOUNDATION # endif /* __LP64__ && NO_COREFOUNDATION_64 */ # include <sys/cdefs.h> # ifdef __DARWIN_UNIX03 # if __DARWIN_UNIX03 # undef HAVE_PUTENV_THAT_COPIES # else # define HAVE_PUTENV_THAT_COPIES 1 # endif # endif /* __DARWIN_UNIX03 */ /* * The termios configure test program relies on the configure script being run * from a terminal, which is not the case e.g. when configuring from Xcode. * Since termios is known to be present on all Mac OS X releases since 10.0, * override the configure defines for serial API here. [Bug 497147] */ # define USE_TERMIOS 1 # undef USE_TERMIO # undef USE_SGTTY /* * Include AvailabilityMacros.h here (when available) to ensure any symbolic * MAC_OS_X_VERSION_* constants passed on the command line are translated. */ # ifdef HAVE_AVAILABILITYMACROS_H # include <AvailabilityMacros.h> # endif /* * Support for weak import. */ # ifdef HAVE_WEAK_IMPORT # if !defined(HAVE_AVAILABILITYMACROS_H) || !defined(MAC_OS_X_VERSION_MIN_REQUIRED) # undef HAVE_WEAK_IMPORT # else # ifndef WEAK_IMPORT_ATTRIBUTE # define WEAK_IMPORT_ATTRIBUTE __attribute__((weak_import)) # endif # endif # endif /* HAVE_WEAK_IMPORT */ /* * Support for MAC_OS_X_VERSION_MAX_ALLOWED define from AvailabilityMacros.h: * only use API available in the indicated OS version or earlier. */ # ifdef MAC_OS_X_VERSION_MAX_ALLOWED # if MAC_OS_X_VERSION_MAX_ALLOWED < 1050 && defined(__LP64__) # undef HAVE_COREFOUNDATION # endif # if MAC_OS_X_VERSION_MAX_ALLOWED < 1040 # undef HAVE_OSSPINLOCKLOCK # undef HAVE_PTHREAD_ATFORK # undef HAVE_COPYFILE # endif # if MAC_OS_X_VERSION_MAX_ALLOWED < 1030 # ifdef TCL_THREADS /* prior to 10.3, realpath is not threadsafe, c.f. bug 711232 */ # define NO_REALPATH 1 # endif # undef HAVE_LANGINFO # endif # endif /* MAC_OS_X_VERSION_MAX_ALLOWED */ # if defined(HAVE_COREFOUNDATION) && defined(__LP64__) && \ defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050 # warning "Weak import of 64-bit CoreFoundation is not supported, will not run on Mac OS X < 10.5." # endif /* * At present, using vfork() instead of fork() causes execve() to fail * intermittently on Darwin x86_64. rdar://4685553 */ # if defined(__x86_64__) && !defined(FIXED_RDAR_4685553) # undef USE_VFORK # endif /* __x86_64__ */ #endif /* __APPLE__ */ /* *--------------------------------------------------------------------------- * The following macros and declarations represent the interface between * generic and unix-specific parts of Tcl. Some of the macros may override * functions declared in tclInt.h. *--------------------------------------------------------------------------- */ /* * The default platform eol translation on Unix is TCL_TRANSLATE_LF. */ #ifdef DJGPP #define TCL_PLATFORM_TRANSLATION TCL_TRANSLATE_CRLF typedef int socklen_t; #else #define TCL_PLATFORM_TRANSLATION TCL_TRANSLATE_LF #endif /* * The following macros have trivial definitions, allowing generic code to * address platform-specific issues. */ #define TclpGetPid(pid) ((unsigned long) (pid)) #define TclpReleaseFile(file) /* Nothing. */ /* * The following defines wrap the system memory allocation routines. */ #define TclpSysAlloc(size, isBin) malloc((size_t)size) #define TclpSysFree(ptr) free((char*)ptr) #define TclpSysRealloc(ptr, size) realloc((char*)ptr, (size_t)size) /* * The following macros and declaration wrap the C runtime library * functions. */ #define TclpExit exit #ifdef TCL_THREADS EXTERN struct tm * TclpLocaltime(CONST time_t *); EXTERN struct tm * TclpGmtime(CONST time_t *); EXTERN char * TclpInetNtoa(struct in_addr); /* #define localtime(x) TclpLocaltime(x) * #define gmtime(x) TclpGmtime(x) */ # undef inet_ntoa # define inet_ntoa(x) TclpInetNtoa(x) # ifdef HAVE_PTHREAD_ATTR_GET_NP # define TclpPthreadGetAttrs pthread_attr_get_np # ifdef ATTRGETNP_NOT_DECLARED /* * Assume it is in pthread_np.h if it isn't in pthread.h. [Bug 1064882] * We might need to revisit this in the future. :^( */ # include <pthread.h> # include <pthread_np.h> # endif # else # ifdef HAVE_PTHREAD_GETATTR_NP # define TclpPthreadGetAttrs pthread_getattr_np # ifdef GETATTRNP_NOT_DECLARED EXTERN int pthread_getattr_np _ANSI_ARGS_((pthread_t, pthread_attr_t *)); # endif # endif /* HAVE_PTHREAD_GETATTR_NP */ # endif /* HAVE_PTHREAD_ATTR_GET_NP */ #endif /* TCL_THREADS */ /* * Set of MT-safe implementations of some * known-to-be-MT-unsafe library calls. * Instead of returning pointers to the * static storage, those return pointers * to the TSD data. */ #include <pwd.h> #include <grp.h> #ifndef MODULE_SCOPE #define MODULE_SCOPE extern #endif MODULE_SCOPE struct passwd* TclpGetPwNam(const char *name); MODULE_SCOPE struct group* TclpGetGrNam(const char *name); MODULE_SCOPE struct passwd* TclpGetPwUid(uid_t uid); MODULE_SCOPE struct group* TclpGetGrGid(gid_t gid); MODULE_SCOPE struct hostent* TclpGetHostByName(const char *name); MODULE_SCOPE struct hostent* TclpGetHostByAddr(const char *addr, int length, int type); #endif /* _TCLUNIXPORT */

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