/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1982-2012 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* David Korn
* AT&T Labs
*
* Shell interface private definitions
*
*/
#ifndef defs_h_defined
#define defs_h_defined
#include <ast.h>
#include <sfio.h>
#include <error.h>
#include "FEATURE/externs"
#include "FEATURE/options"
#include <cdt.h>
#include <history.h>
#include "fault.h"
#include "argnod.h"
#include "name.h"
#include <ctype.h>
#ifndef pointerof
#define pointerof(x) ((void*)((char*)0+(x)))
#endif
#define Empty ((char*)(e_sptbnl+3))
#define env_change() (++ast.env_serial)
#if SHOPT_ENV
# include <env.h>
#else
# define Env_t void
# define sh_envput(e,p) env_change()
# define env_delete(e,p) env_change()
#endif
extern char* sh_getenv(const char*);
extern char* sh_setenviron(const char*);
/*
* note that the first few fields have to be the same as for
* Shscoped_t in <shell.h>
*/
struct sh_scoped
{
struct sh_scoped *prevst; /* pointer to previous state */
int dolc;
char **dolv;
char *cmdname;
char *filename;
char *funname;
int lineno;
Dt_t *save_tree; /* var_tree for calling function */
struct sh_scoped *self; /* pointer to copy of this scope*/
Dt_t *var_local; /* local level variables for name() */
struct slnod *staklist; /* link list of function stacks */
int states;
int breakcnt;
int execbrk;
int loopcnt;
int firstline;
int32_t optindex;
int32_t optnum;
int32_t tmout; /* value for TMOUT */
short optchar;
short opterror;
int ioset;
unsigned short trapmax;
char *trap[SH_DEBUGTRAP+1];
char **otrap;
char **trapcom;
char **otrapcom;
void *timetrap;
struct Ufunction *real_fun; /* current 'function name' function */
};
struct limits
{
long arg_max; /* max arg+env exec() size */
int open_max; /* maximum number of file descriptors */
int clk_tck; /* number of ticks per second */
int child_max; /* maxumum number of children */
int ngroups_max; /* maximum number of process groups */
unsigned char posix_version; /* posix version number */
unsigned char posix_jobcontrol;/* non-zero for job control systems */
unsigned char fs3d; /* non-zero for 3-d file system */
};
#ifndef SH_wait_f_defined
typedef int (*Shwait_f)(int, long, int);
# define SH_wait_f_defined
#endif
struct shared
{
struct limits lim;
uid_t userid;
uid_t euserid;
gid_t groupid;
gid_t egroupid;
pid_t pid;
int32_t ppid;
unsigned char sigruntime[2];
Namval_t *bltin_nodes;
Namval_t *bltin_cmds;
History_t *hist_ptr;
char *shpath;
char *user;
char **sigmsg;
char *rcfile;
char **login_files;
void *ed_context;
void *init_context;
void *job_context;
int *stats;
int bltin_nnodes; /* number of bltins nodes */
int sigmax;
int nforks;
Shwait_f waitevent;
};
#define _SH_PRIVATE \
struct shared *gd; /* global data */ \
struct sh_scoped st; /* scoped information */ \
Stk_t *stk; /* stack poiter */ \
Sfio_t *heredocs; /* current here-doc temp file */ \
Sfio_t *funlog; /* for logging function definitions */ \
int **fdptrs; /* pointer to file numbers */ \
int savexit; \
char *lastarg; \
char *lastpath; /* last alsolute path found */ \
int path_err; /* last error on path search */ \
Dt_t *track_tree; /* for tracked aliases*/ \
Dt_t *var_base; /* global level variables */ \
Dt_t *openmatch; \
Namval_t *namespace; /* current active namespace*/ \
Namval_t *last_table; /* last table used in last nv_open */ \
Namval_t *prev_table; /* previous table used in nv_open */ \
Sfio_t *outpool; /* ouput stream pool */ \
long timeout; /* read timeout */ \
long curenv; /* current subshell number */ \
long jobenv; /* subshell number for jobs */ \
int infd; /* input file descriptor */ \
short nextprompt; /* next prompt is PS<nextprompt> */ \
short poolfiles; \
Namval_t *posix_fun; /* points to last name() function */ \
char *outbuff; /* pointer to output buffer */ \
char *errbuff; /* pointer to stderr buffer */ \
char *prompt; /* pointer to prompt string */ \
char *shname; /* shell name */ \
char *comdiv; /* points to sh -c argument */ \
char *prefix; /* prefix for compound assignment */ \
sigjmp_buf *jmplist; /* longjmp return stack */ \
char *fifo; /* fifo name for process sub */ \
int oldexit; \
pid_t bckpid; /* background process id */ \
pid_t cpid; \
pid_t spid; /* subshell process id */ \
pid_t pipepid; \
pid_t outpipepid; \
int topfd; \
int savesig; \
unsigned char *sigflag; /* pointer to signal states */ \
char intrap; \
char login_sh; \
char lastbase; \
char forked; \
char binscript; \
char deftype; \
char funload; \
char used_pos; /* used postional parameter */\
char universe; \
char winch; \
char inarith; /* set when in ((...)) */ \
char indebug; /* set when in debug trap */ \
unsigned char ignsig; /* ignored signal in subshell */ \
unsigned char lastsig; /* last signal received */ \
char pathinit; /* pathinit called from subshell */ \
char comsub; /* set when in $() comsub */ \
char subshare; /* set when in ${..} comsub */ \
char toomany; /* set when out of fd's */ \
char instance; /* in set_instance */ \
char decomma; /* decimal_point=',' */ \
char redir0; /* redirect of 0 */ \
char *readscript; /* set before reading a script */ \
int subdup; /* bitmask for dups of 1 */ \
int *inpipe; /* input pipe pointer */ \
int *outpipe; /* output pipe pointer */ \
int cpipe[3]; \
int coutpipe; \
int inuse_bits; \
struct argnod *envlist; \
struct dolnod *arglist; \
int fn_depth; \
int fn_reset; \
int dot_depth; \
int hist_depth; \
int xargmin; \
int xargmax; \
int xargexit; \
int nenv; \
mode_t mask; \
int lexsize; \
Env_t *env; \
void *init_context; \
void *mac_context; \
void *lex_context; \
void *arg_context; \
void *job_context; \
void *pathlist; \
void *defpathlist; \
void *cdpathlist; \
char **argaddr; \
void *optlist; \
struct sh_scoped global; \
struct checkpt checkbase; \
Shinit_f userinit; \
Shbltin_f bltinfun; \
Shbltin_t bltindata; \
char *cur_line; \
int offsets[10]; \
Sfio_t **sftable; \
unsigned char *fdstatus; \
const char *pwd; \
void *jmpbuffer; \
void *mktype; \
Sfio_t *strbuf; \
Sfio_t *strbuf2; \
Dt_t *first_root; \
Dt_t *prefix_root; \
Dt_t *last_root; \
Dt_t *prev_root; \
Dt_t *fpathdict; \
Dt_t *typedict; \
Dt_t *inpool; \
Dt_t *transdict; \
char ifstable[256]; \
unsigned long test; \
Shopt_t offoptions; \
Shopt_t glob_options; \
Namval_t *typeinit; \
Namfun_t nvfun; \
char *mathnodes; \
void *coshell; \
char *bltin_dir; \
struct Regress_s*regress;
#include <shell.h>
#include "shtable.h"
#include "regress.h"
/* error exits from various parts of shell */
#define NIL(type) ((type)0)
#define new_of(type,x) ((type*)malloc((unsigned)sizeof(type)+(x)))
#define exitset() (sh.savexit=sh.exitval)
#ifndef SH_DICT
#define SH_DICT (void*)e_dict
#endif
#ifndef SH_CMDLIB_DIR
#define SH_CMDLIB_DIR "/opt/ast/bin"
#endif
/* states */
/* low numbered states are same as options */
#define SH_NOFORK 0 /* set when fork not necessary */
#define SH_FORKED 7 /* set when process has been forked */
#define SH_PROFILE 8 /* set when processing profiles */
#define SH_NOALIAS 9 /* do not expand non-exported aliases */
#define SH_NOTRACK 10 /* set to disable sftrack() function */
#define SH_STOPOK 11 /* set for stopable builtins */
#define SH_GRACE 12 /* set for timeout grace period */
#define SH_TIMING 13 /* set while timing pipelines */
#define SH_DEFPATH 14 /* set when using default path */
#define SH_INIT 15 /* set when initializing the shell */
#define SH_TTYWAIT 16 /* waiting for keyboard input */
#define SH_FCOMPLETE 17 /* set for filename completion */
#define SH_PREINIT 18 /* set with SH_INIT before parsing options */
#define SH_COMPLETE 19 /* set for command completion */
#define SH_BASH 41
#define SH_BRACEEXPAND 42
#define SH_POSIX 46
#define SH_MULTILINE 47
#define SH_NOPROFILE 78
#define SH_NOUSRPROFILE 79
#define SH_LOGIN_SHELL 67
#define SH_COMMANDLINE 0x100
#define SH_BASHEXTRA 0x200
#define SH_BASHOPT 0x400
#define SH_ID "ksh" /* ksh id */
#define SH_STD "sh" /* standard sh id */
/* defines for sh_type() */
#define SH_TYPE_SH 001
#define SH_TYPE_KSH 002
#define SH_TYPE_BASH 004
#define SH_TYPE_LOGIN 010
#define SH_TYPE_PROFILE 020
#define SH_TYPE_RESTRICTED 040
#if SHOPT_BASH
# ifndef SHOPT_HISTEXPAND
# define SHOPT_HISTEXPAND 1
# endif
/*
* define for all the bash options
*/
# define SH_CDABLE_VARS 51
# define SH_CDSPELL 52
# define SH_CHECKHASH 53
# define SH_CHECKWINSIZE 54
# define SH_CMDHIST 55
# define SH_DOTGLOB 56
# define SH_EXECFAIL 57
# define SH_EXPAND_ALIASES 58
# define SH_EXTGLOB 59
# define SH_HOSTCOMPLETE 63
# define SH_HUPONEXIT 64
# define SH_INTERACTIVE_COMM 65
# define SH_LITHIST 66
# define SH_MAILWARN 68
# define SH_NOEMPTYCMDCOMPL 69
# define SH_NOCASEGLOB 70
# define SH_NULLGLOB 71
# define SH_PHYSICAL 45
# define SH_PROGCOMP 72
# define SH_PROMPTVARS 73
# define SH_RESTRICTED2 74
# define SH_SHIFT_VERBOSE 75
# define SH_SOURCEPATH 76
# define SH_XPG_ECHO 77
#endif
#if SHOPT_HISTEXPAND
# define SH_HISTAPPEND 60
# define SH_HISTEXPAND 43
# define SH_HISTORY2 44
# define SH_HISTREEDIT 61
# define SH_HISTVERIFY 62
#endif
#ifndef PIPE_BUF
# define PIPE_BUF 512
#endif
#if SHOPT_PFSH && ( !_lib_getexecuser || !_lib_free_execattr )
# undef SHOPT_PFSH
#endif
#define MATCH_MAX 64
#define SH_READEVAL 0x4000 /* for sh_eval */
#define SH_FUNEVAL 0x10000 /* for sh_eval for function load */
extern struct shared *shgd;
extern Shell_t *nv_shell(Namval_t*);
extern void sh_applyopts(Shell_t*,Shopt_t);
extern char **sh_argbuild(Shell_t*,int*,const struct comnod*,int);
extern struct dolnod *sh_argfree(Shell_t *, struct dolnod*,int);
extern struct dolnod *sh_argnew(Shell_t*,char*[],struct dolnod**);
extern void *sh_argopen(Shell_t*);
extern struct argnod *sh_argprocsub(Shell_t*,struct argnod*);
extern void sh_argreset(Shell_t*,struct dolnod*,struct dolnod*);
extern Namval_t *sh_assignok(Namval_t*,int);
extern struct dolnod *sh_arguse(Shell_t*);
extern char *sh_checkid(char*,char*);
extern void sh_chktrap(Shell_t*);
extern void sh_deparse(Sfio_t*,const Shnode_t*,int);
extern int sh_debug(Shell_t *shp,const char*,const char*,const char*,char *const[],int);
extern int sh_echolist(Shell_t*,Sfio_t*, int, char**);
extern struct argnod *sh_endword(Shell_t*,int);
extern char **sh_envgen(void);
#if SHOPT_ENV
extern void sh_envput(Env_t*, Namval_t*);
#endif
extern void sh_envnolocal(Namval_t*,void*);
extern Sfdouble_t sh_arith(Shell_t*,const char*);
extern void *sh_arithcomp(Shell_t *,char*);
extern pid_t sh_fork(Shell_t*,int,int*);
extern pid_t _sh_fork(Shell_t*,pid_t, int ,int*);
extern char *sh_mactrim(Shell_t*,char*,int);
extern int sh_macexpand(Shell_t*,struct argnod*,struct argnod**,int);
extern int sh_macfun(Shell_t*,const char*,int);
extern void sh_machere(Shell_t*,Sfio_t*, Sfio_t*, char*);
extern void *sh_macopen(Shell_t*);
extern char *sh_macpat(Shell_t*,struct argnod*,int);
extern Sfdouble_t sh_mathfun(Shell_t*, void*, int, Sfdouble_t*);
extern int sh_outtype(Shell_t*, Sfio_t*);
extern char *sh_mactry(Shell_t*,char*);
extern int sh_mathstd(const char*);
extern void sh_printopts(Shopt_t,int,Shopt_t*);
extern int sh_readline(Shell_t*,char**,volatile int,int,ssize_t,long);
extern Sfio_t *sh_sfeval(char*[]);
extern void sh_setmatch(Shell_t*,const char*,int,int,int[],int);
extern Dt_t *sh_subaliastree(int);
extern void sh_scope(Shell_t*, struct argnod*, int);
extern Namval_t *sh_scoped(Shell_t*, Namval_t*);
extern Dt_t *sh_subfuntree(int);
extern void sh_subjobcheck(pid_t);
extern int sh_subsavefd(int);
extern void sh_subtmpfile(Shell_t*);
extern char *sh_substitute(const char*,const char*,char*);
extern void sh_timetraps(Shell_t*);
extern const char *_sh_translate(const char*);
extern int sh_trace(Shell_t*,char*[],int);
extern void sh_trim(char*);
extern int sh_type(const char*);
extern void sh_unscope(Shell_t*);
extern void sh_utol(const char*, char*);
extern int sh_whence(char**,int);
#if SHOPT_COSHELL
extern int sh_coaddfile(Shell_t*,char*);
extern int sh_copipe(Shell_t*, int[], int);
extern int sh_coaccept(Shell_t*,int[],int);
#endif /* SHOPT_COSHELL */
#if SHOPT_NAMESPACE
extern Namval_t *sh_fsearch(Shell_t*,const char *,int);
#endif /* SHOPT_NAMESPACE */
extern int sh_diropenat(Shell_t *, int, const char *, bool xattr);
#ifndef ERROR_dictionary
# define ERROR_dictionary(s) (s)
#endif
#define sh_translate(s) _sh_translate(ERROR_dictionary(s))
#define WBITS (sizeof(long)*8)
#define WMASK (0xff)
#define is_option(s,x) ((s)->v[((x)&WMASK)/WBITS] & (1L << ((x) % WBITS)))
#define on_option(s,x) ((s)->v[((x)&WMASK)/WBITS] |= (1L << ((x) % WBITS)))
#define off_option(s,x) ((s)->v[((x)&WMASK)/WBITS] &= ~(1L << ((x) % WBITS)))
#define sh_isoption(x) is_option(&sh.options,x)
#define sh_onoption(x) on_option(&sh.options,x)
#define sh_offoption(x) off_option(&sh.options,x)
#define sh_state(x) ( 1<<(x))
#define sh_isstate(x) (sh.st.states&sh_state(x))
#define sh_onstate(x) (sh.st.states |= sh_state(x))
#define sh_offstate(x) (sh.st.states &= ~sh_state(x))
#define sh_getstate() (sh.st.states)
#define sh_setstate(x) (sh.st.states = (x))
#define sh_sigcheck(shp) do{if(shp->trapnote&SH_SIGSET)sh_exit(SH_EXITSIG);} while(0)
extern int32_t sh_mailchk;
extern const char e_dict[];
/* sh_printopts() mode flags -- set --[no]option by default */
#define PRINT_VERBOSE 0x01 /* option on|off list */
#define PRINT_ALL 0x02 /* list unset options too */
#define PRINT_NO_HEADER 0x04 /* omit listing header */
#define PRINT_SHOPT 0x08 /* shopt -s|-u */
#define PRINT_TABLE 0x10 /* table of all options */
#ifdef SHOPT_STATS
/* performance statistics */
# define STAT_ARGHITS 0
# define STAT_ARGEXPAND 1
# define STAT_COMSUB 2
# define STAT_FORKS 3
# define STAT_FUNCT 4
# define STAT_GLOBS 5
# define STAT_READS 6
# define STAT_NVHITS 7
# define STAT_NVOPEN 8
# define STAT_PATHS 9
# define STAT_SVFUNCT 10
# define STAT_SCMDS 11
# define STAT_SPAWN 12
# define STAT_SUBSHELL 13
extern const Shtable_t shtab_stats[];
# define sh_stats(x) (shgd->stats[(x)]++)
#else
# define sh_stats(x)
#endif /* SHOPT_STATS */
#endif