/*- * Copyright (c) 1991, 1993 * The Regents of the University of California. All rights reserved. * Copyright (c) 1997-2005 * Herbert Xu . All rights reserved. * * This code is derived from software contributed to Berkeley by * Kenneth Almquist. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)shell.h 8.2 (Berkeley) 5/4/95 */ /* * The follow should be set to reflect the type of system you have: * JOBS -> 1 if you have Berkeley job control, 0 otherwise. * SHORTNAMES -> 1 if your linker cannot handle long names. * define BSD if you are running 4.2 BSD or later. * define SYSV if you are running under System V. * define DEBUG=1 to compile in debugging ('set -o debug' to turn on) * define DEBUG=2 to compile in and turn on debugging. * define DO_SHAREDVFORK to indicate that vfork(2) shares its address * with its parent. * * When debugging is on, debugging info will be written to ./trace and * a quit signal will generate a core dump. */ #include #ifdef __KLIBC__ #include #endif #ifndef JOBS #define JOBS 1 #endif #ifndef BSD #define BSD 1 #endif #ifndef DO_SHAREDVFORK #if __NetBSD_Version__ >= 104000000 #define DO_SHAREDVFORK #endif #endif #ifdef __OS2__ #define PATH_SEP ';' #define PATH_SLASHES "\\/" #define PATH_IS_SLASH(ch) ((ch) == '\\' || (ch) == '/') #define PATH_USE_BACKSLASH 1 #define PATH_IS_UNC(path) \ (PATH_IS_SLASH(*(path)) && PATH_IS_SLASH((path)[1])) #define PATH_USE_DRIVE 1 #define PATH_IS_DRIVE(path) \ (((*(path) >= 'A' && *(path) <= 'Z') || \ (*(path) >= 'a' && *(path) <= 'z')) && (path)[1] == ':') #define PATH_IS_DRIVE_ROOT(path) \ (PATH_IS_DRIVE(path) && ((path)[2]=='\0' || PATH_IS_SLASH((path)[2]))) #ifdef __KLIBC__ #define PATH_IS_REWRITE(path) (__libc_PathRewrite((path), NULL, 0) > 0) #else #define PATH_IS_REWRITE(path) (0) #endif #define PATH_IS_ROOT(path) \ (PATH_IS_SLASH(*(path)) && !PATH_IS_SLASH((path)[2])) #define PATH_IS_ABS(path) (PATH_IS_UNC(path) || PATH_IS_DRIVE_ROOT(path) || PATH_IS_REWRITE(path)) #define PATH_IS_ABS_OR_ROOT(path) (PATH_IS_ABS(path) || PATH_IS_ROOT(path)) #define PATH_IS_REL(path) (!PATH_IS_ABS(path)) #define PATH_ROOT_COMP_LEN(path) \ (PATH_IS_UNC(path) ? 2 : \ PATH_IS_DRIVE(path) ? (PATH_IS_SLASH((path)[2]) ? 3 : 2) : \ PATH_IS_ROOT(path) ? 1: 0) #define PATH_HAS_SLASH(path) (strpbrk(path, PATH_SLASHES) != NULL) #define EXE_USE_EXTS 1 #define EXE_EXTS_LIST ".exe", ".cmd", ".bat", ".com", ".btm" #define EXE_EXTS_MAXLEN 4 #else #define PATH_SEP ':' #define PATH_SLASHES "/" #define PATH_IS_SLASH(ch) ((ch) == '/') #define PATH_USE_BACKSLASH 0 #define PATH_IS_UNC(path) (*(path) == '/' && (path)[1] == '/') #define PATH_USE_DRIVE 0 #define PATH_IS_DRIVE(path) 0 #define PATH_IS_DRIVE_ROOT(path) 0 #define PATH_IS_ROOT(path) (*(path) == '/') #define PATH_IS_ABS(path) (*(path) == '/') #define PATH_IS_ABS_OR_ROOT(path) (*(path) == '/') #define PATH_IS_REL(path) (*(path) != '/')) #define PATH_ROOT_COMP_LEN(path) (*(path) == '/' ? 1 : 0) #define PATH_HAS_SLASH(path) (strchr(path, '/') != NULL) #define EXE_USE_EXTS 0 #define EXE_EXTS_LIST #define EXE_EXTS_MAXLEN 0 #endif #ifdef __OS2__ /* Limit process exit status to 0-255 for better *nix compatibility */ #ifdef __INNOTEK_LIBC__ #undef WEXITSTATUS #define WEXITSTATUS(x) ((_W_INT(x) >> 8) & 0x000000ff) #else #error Port me! #endif #endif typedef void *pointer; #ifndef NULL #define NULL (void *)0 #endif #define STATIC static #define MKINIT /* empty */ extern char nullstr[1]; /* null string */ #ifdef DEBUG #define TRACE(param) trace param #define TRACEV(param) tracev param #else #define TRACE(param) #define TRACEV(param) #endif #if defined(__GNUC__) && __GNUC__ < 3 #define va_copy __va_copy #endif #if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) #define __builtin_expect(x, expected_value) (x) #endif #define likely(x) __builtin_expect(!!(x),1) #define unlikely(x) __builtin_expect(!!(x),0) /* * Hack to calculate maximum length. * (length * 8 - 1) * log10(2) + 1 + 1 + 12 * The second 1 is for the minus sign and the 12 is a safety margin. */ static inline int max_int_length(int bytes) { return (bytes * 8 - 1) * 0.30102999566398119521 + 14; }