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Diffstat (limited to 'unix/tclUnixPort.h')
| -rw-r--r-- | unix/tclUnixPort.h | 480 |
1 files changed, 480 insertions, 0 deletions
diff --git a/unix/tclUnixPort.h b/unix/tclUnixPort.h new file mode 100644 index 0000000..186de21 --- /dev/null +++ b/unix/tclUnixPort.h @@ -0,0 +1,480 @@ +/* + * 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) 1994-1995 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * SCCS: @(#) tclUnixPort.h 1.49 97/07/30 14:11:59 + */ + +#ifndef _TCLUNIXPORT +#define _TCLUNIXPORT + +#ifndef _TCLINT +# include "tclInt.h" +#endif +#include <errno.h> +#include <fcntl.h> +#ifdef HAVE_NET_ERRNO_H +# include <net/errno.h> +#endif +#include <pwd.h> +#include <signal.h> +#include <sys/param.h> +#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 +#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 +#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 */ + +/* + * 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 following defines denote malloc and free as the system calls + * used to allocate new memory. These defines are only used in the + * file tclCkalloc.c. + */ + +#define TclpAlloc(size) malloc(size) +#define TclpFree(ptr) free(ptr) +#define TclpRealloc(ptr, size) realloc(ptr, size) + +/* + * The default platform eol translation on Unix is TCL_TRANSLATE_LF: + */ + +#define TCL_PLATFORM_TRANSLATION TCL_TRANSLATE_LF + +/* + * 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. + */ + +extern int errno; + +/* + * 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 +# define lstat stat +#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 +#ifndef S_ISDIR +# ifdef S_IFDIR +# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) +# else +# define S_ISDIR(m) 0 +# endif +# endif +#ifndef S_ISCHR +# ifdef S_IFCHR +# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) +# else +# define S_ISCHR(m) 0 +# endif +# endif +#ifndef S_ISBLK +# ifdef S_IFBLK +# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) +# else +# define S_ISBLK(m) 0 +# endif +# endif +#ifndef S_ISFIFO +# ifdef S_IFIFO +# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) +# else +# define S_ISFIFO(m) 0 +# endif +# endif +#ifndef S_ISLNK +# ifdef S_IFLNK +# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) +# else +# define S_ISLNK(m) 0 +# endif +# endif +#ifndef S_ISSOCK +# ifdef S_IFSOCK +# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) +# else +# define S_ISSOCK(m) 0 +# endif +# endif + +/* + * Make sure that MAXPATHLEN is defined. + */ + +#ifndef MAXPATHLEN +# ifdef PATH_MAX +# define MAXPATHLEN PATH_MAX +# else +# define MAXPATHLEN 2048 +# 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 +# ifndef _AIX + typedef long fd_mask; +# endif +# if defined(_IBMR2) +# define SELECT_MASK void +# else +# define SELECT_MASK int +# endif +#endif + +/* + * 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 +#if !defined(howmany) +# define howmany(x, y) (((x)+((y)-1))/(y)) +#endif +#ifndef NFDBITS +# define NFDBITS NBBY*sizeof(fd_mask) +#endif +#define MASK_SIZE howmany(FD_SETSIZE, NFDBITS) + +/* + * The following implements the Unix method for exiting the process. + */ +#define TclPlatformExit(status) exit(status) + +/* + * The following functions always succeeds under Unix. + */ + +#define TclHasSockets(interp) (TCL_OK) +#define TclHasPipes() (1) + +/* + * Variables provided by the C library: + */ + +#if defined(_sgi) || defined(__sgi) +#define environ _environ +#endif +extern char **environ; + +/* + * 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. + */ + +extern double strtod(); + +/* + * The following macros define time related functions in terms of + * standard Unix routines. + */ + +#define TclpGetDate(t,u) ((u) ? gmtime((t)) : localtime((t))) +#define TclStrftime(s,m,f,t) (strftime((s),(m),(f),(t))) +#define TclpGetPid(pid) ((unsigned long) (pid)) + +#define TclpReleaseFile(file) + +/* + * The following routine is only exported for testing purposes. + */ + +EXTERN int TclUnixWaitForFile _ANSI_ARGS_((int fd, int mask, + int timeout)); + +#endif /* _TCLUNIXPORT */ |