/* * tclPort.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 Sun Microsystems, Inc. * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * * @(#) tclPort.h 1.6 95/05/11 10:46:38 */ #ifndef _TCLPORT #define _TCLPORT #include #include #include #include #include #include #ifdef USE_DIRENT2_H # include "compat/dirent2.h" #else # ifdef NO_DIRENT_H # include "compat/dirent.h" # else # include # endif #endif #include #include #ifndef NO_SYS_TIME_H # include #else # include #endif #ifndef NO_SYS_WAIT_H # include #endif #ifdef HAVE_UNISTD_H # include #else # include "compat/unistd.h" #endif /* * 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 # include # 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 /* * Substitute Tcl's own versions for several system calls. The * Tcl versions retry automatically if interrupted by signals. * (see tclUnixUtil.c). */ #define open(a,b,c) TclOpen(a,b,c) #define read(a,b,c) TclRead(a,b,c) #define waitpid(a,b,c) TclWaitpid(a,b,c) #define write(a,b,c) TclWrite(a,b,c) EXTERN int TclOpen _ANSI_ARGS_((char *path, int oflag, int mode)); EXTERN int TclRead _ANSI_ARGS_((int fd, VOID *buf, size_t numBytes)); EXTERN int TclWaitpid _ANSI_ARGS_((pid_t pid, int *statPtr, int options)); EXTERN int TclWrite _ANSI_ARGS_((int fd, VOID *buf, size_t numBytes)); /* * Variables provided by the C library: */ #if defined(_sgi) || defined(__sgi) #define environ _environ #endif extern char **environ; #endif /* _TCLPORT */