/* * Public Domain Bourne/Korn shell */ /* $Id: sh.h,v 1.6 93/05/05 21:17:00 sjg Exp $ */ #include "config.h" /* some useful #defines */ #ifdef EXTERN # define _I_(i) = i #else # define _I_(i) # define EXTERN extern # define EXTERN_DEFINED #endif #ifndef SHELL #define SHELL "cmd.exe" /* shell to exec scripts */ #endif #ifdef _BSD #define memmove(dst, src, n) bcopy((src), (dst), (n)) #endif /* some people object to this use of __STDC__ */ #ifdef __STDC__ #define ARGS(args) args /* prototype declaration */ #else #define ARGS(args) () /* K&R declaration */ #ifdef VOID #define void VOID #endif #define const #define volatile #endif #ifdef _ULTRIX /* Ultrix 2.x gets dup2 wrong */ int dup2 ARGS ((int, int)); /* assumes we don't want dup2 return value */ #define dup2(ofd, nfd) \ (void) ((dup2)(ofd, nfd), fcntl(nfd, F_SETFD, 0)) #endif #if defined(EMACS) || defined(VI) #define EDIT #endif typedef int bool_t; #define FALSE 0 #define TRUE 1 #define sizeofN(type, n) (sizeof(type) * (n)) #define BIT(i) (1<<(i)) /* define bit in flag */ #define NUFILE 10 /* Number of user-accessible files */ #define FDBASE 10 /* First file usable by Shell */ /* you're not going to run setuid shell scripts, are you? */ #define eaccess(path, mode) (path ? access(path, mode) : -1) #define MAGIC (char)0x80 /* prefix for ~*?[ during expand */ #define NOT '!' /* might use ^ */ #define LINE 256 /* input line size */ #define PATH 256 /* pathname size */ EXTERN int kshpid; /* $$, shell pid */ EXTERN int exstat; /* exit status */ EXTERN int async; /* $!, last &'d pid */ EXTERN volatile int sigchld_caught; /* count of dead children */ /* * Area-based allocation built on malloc/free */ typedef struct Area { struct Block *free; /* free list */ } Area; extern Area aperm; /* permanent object space */ #define APERM &aperm #define ATEMP &e.area /* * parsing & execution environment */ EXTERN struct env { int type; /* enviroment type - see below */ Area area; /* temporary allocation area */ struct block *loc; /* local variables and functions */ short *savefd; /* original redirected fd's */ struct env *oenv; /* link to previous enviroment */ jmp_buf jbuf; /* long jump back to env creator */ int interactive; /* fd's 0,1,2 are tty */ struct temp *temps; /* temp files */ } e; #define E_NONE 0 /* dummy enviroment */ #define E_PARSE 1 /* parsing command # */ #define E_EXEC 2 /* executing command tree */ #define E_LOOP 3 /* executing for/while # */ #define E_TCOM 5 /* executing simple command */ #define E_FUNC 6 /* executing function */ #define E_ERRH 7 /* general error handler # */ /* # indicates env has valid jbuf */ /* * flags */ #define FEXPORT FLAG('a') /* -a: allexport */ #define FERREXIT FLAG('e') /* -e: errexit (quit on error) */ #define FBGNICE 29 /* bgnice */ #define FEMACS 30 /* emacs command editing */ #define FIGNEOF 27 /* ignoreeof (eof does not exit) */ #define FHASHALL FLAG('h') /* -h: trackall, hashall */ #define FTALKING FLAG('i') /* -i: interactive (talking type wireless) */ #define FKEYWORD FLAG('k') /* -k: keyword (name=value anywhere) */ #define FMARKDIRS 28 /* markdirs */ #define FMONITOR FLAG('m') /* -m: monitor */ #define FNOEXEC FLAG('n') /* -n: noexec */ #define FNOGLOB FLAG('f') /* -f: noglob */ #define FPRIVILEGED FLAG('p') /* -p: privileged */ #define FSTDIN FLAG('s') /* -s (invocation): parse stdin */ #define FNOUNSET FLAG('u') /* -u: nounset (unset vars is error) */ #define FVERBOSE FLAG('v') /* -v: verbose (echo input) */ #define FVI 31 /* vi command editing */ #define FXTRACE FLAG('x') /* -x: (execute) xtrace */ #define FLAG(c) (1 + c - 'a') /* map char to flags index */ #define FLAGS 32 EXTERN char flag [FLAGS]; int option ARGS((const char *name)); char *getoptions ARGS((void)); void printoptions ARGS((void)); extern char null []; /* null value for variable */ /* * other functions */ char * substitute ARGS((char const *, int)); char *search(); struct tbl *findcom(); char *strsave ARGS((char *, Area *)); char *ulton ARGS((unsigned long n, int base)); int xstrcmp(); void qsortp ARGS((void **base, size_t n, int (*compare)(void *, void *))); long evaluate ARGS((const char *expr)); void resetopts(); void histsave(); void histlist(); int pr_menu ARGS((char **, int)); void j_init ARGS((void)); void j_exit ARGS((void)); void j_notify ARGS((void)); void j_kill ARGS((int job, int sig)); #ifdef JOBS void j_change ARGS((void)); int j_resume ARGS((int job, int bg)); #endif /* * error handling */ void leave(); /* abort shell (or fail in subshell) */ /* * library functions */ typedef void (*handler_t)(); /* signal handler */ /* temp/here files. the file is removed when the struct is freed */ struct temp { struct temp * next; char *name; }; struct temp *maketemp ARGS((Area *ap)); /* * stdio and our IO routines */ #ifdef BUFSIZ /* included? */ extern FILE * shf [NUFILE]; /* map shell fd to FILE */ #endif void fopenshf(); void flushshf(); #undef stdin #undef stdout #define stdin shf[0] /* standard input */ #define stdout shf[1] /* standard output */ #define shlout shf[2] /* shell output */ int shellf ARGS((const char *fmt, ...)); /* fprintf(shlout, ); */ int errorf ARGS((const char *fmt, ...)); /* fprintf(shlout, ); error(); */ /* * IO control */ extern int ttyfd; /* tty fd (original fd 0) */ int savefd ARGS((int fd)); /* save user fd */ void restfd ARGS((int fd, int ofd)); void openpipe ARGS((int [2])); void closepipe ARGS((int [2])); /* * trap handlers */ typedef struct trap { int signal; /* signal number */ char *name; /* short name */ char *mess; /* descriptive name */ char *trap; /* trap command */ int volatile set; /* trap pending */ int ourtrap; /* not ignored (?) */ int sig_dfl; /* originally SIG_DFL */ } Trap; #ifndef SIGKILL #include #endif /* SIGKILL */ #ifdef NSIG #define SIGNALS NSIG #else #ifdef _MINIX #define SIGNALS (_NSIG+1) /* _NSIG is # of signals used, excluding 0. */ #else #define SIGNALS 32 #endif /* _MINIX */ #endif /* NSIG */ #ifdef USE_SIGACT /* always use it? */ #ifndef SA_NOCLDSTOP # include "sigact.h" /* use sjg's fake sigaction() */ #endif EXTERN struct sigaction Sigact, Sigact_dfl, Sigact_ign, Sigact_trap; #endif EXTERN int volatile trap; /* traps pending? */ extern Trap sigtraps[SIGNALS]; Trap *gettrap ARGS((char *)); /* search for struct trap by number or name */ void trapsig ARGS((int sig)); /* trap signal handler */ /* * fast character classes */ #define C_ALPHA 0x01 /* a-z_A-Z */ #define C_DIGIT 0x02 /* 0-9 */ #define C_LEX1 0x04 /* \0 \t\n|&;<>() */ #define C_VAR1 0x08 /* *@#!$-? */ #define C_SUBOP 0x40 /* "=-+?#%" */ #define C_IFS 0x80 /* $IFS */ extern char ctypes []; #if 0 void initctypes ARGS((void)); void setctypes ARGS((const char*, int type)); #endif #define ctype(c, t) !!(ctypes[(unsigned char)(c)]&(t)) #define letter(c) ctype(c, C_ALPHA) #define digit(c) ctype(c, C_DIGIT) #define letnum(c) ctype(c, C_ALPHA|C_DIGIT) #include "table.h" #include "tree.h" #include "lex.h" #include "proto.h" #ifndef offsetof #define offsetof(type,id) ((size_t)&((type*)NULL)->id) #endif /* * 91-07-06 * use my simple debug tracing... */ #include "trace.h" #ifndef fileno #define fileno(p) ((p)->handle) #endif /* be sure not to interfere with anyone else's idea about EXTERN */ #ifdef EXTERN_DEFINED # undef EXTERN_DEFINED # undef EXTERN #endif #undef _I_ /* * Local Variables: * version-control:t * comment-column:40 * End: */ #ifdef OS2 #define PATHSEP ';' #define DIRSEP '\\' #define DIRSEPSTR "\\" #define ISDIRSEP(c) ((c) == '\\' || (c) == '/') extern char *index_sep(char *path); extern char *rindex_sep(char *path); #define chdir _chdir2 #define getcwd _getcwd2 #else #define PATHSEP ':' #define DIRSEP '/' #define DIRSEPSTR "/" #define ISDIRSEP(c) ((c) == '/') #define index_sep(p) strchr(p, DIRSEP) #define rindex_sep(p) strrchr(p, DIRSEP) #endif