inetd,ed,msh: data/bss reduction (in mss, more than 9k of it)
This commit is contained in:
Denis Vlasenko
104
shell/msh.c
104
shell/msh.c
@ -13,12 +13,13 @@
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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# include <sys/times.h>
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# include <setjmp.h>
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#ifdef STANDALONE
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# ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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# endif
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# include <setjmp.h>
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# include <sys/times.h>
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <sys/wait.h>
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@ -82,8 +83,6 @@ static char *itoa(int n)
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return local_buf;
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}
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#else
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# include <setjmp.h>
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# include <sys/times.h>
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# include "busybox.h"
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extern char **environ;
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#endif
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@ -162,12 +161,10 @@ int mshdbg_rc = 0;
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*/
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typedef void xint; /* base type of jmp_buf, for not broken compilers */
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/*
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* shell components
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*/
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#define QUOTE 0200
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#define NOBLOCK ((struct op *)NULL)
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#define NOWORD ((char *)NULL)
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#define NOWORDS ((char **)NULL)
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@ -297,24 +294,21 @@ static char *flag = flags - 'a';
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static char *null; /* null value for variable */
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static int intr; /* interrupt pending */
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static char *trap[_NSIG + 1];
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static char ourtrap[_NSIG + 1];
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/* moved to G: static char *trap[_NSIG + 1]; */
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/* moved to G: static char ourtrap[_NSIG + 1]; */
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static int trapset; /* trap pending */
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static int heedint; /* heed interrupt signals */
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static int yynerrs; /* yacc */
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static char line[LINELIM];
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static char *elinep;
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/* moved to G: static char line[LINELIM]; */
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#if ENABLE_FEATURE_EDITING
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static char *current_prompt;
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static line_input_t *line_input_state;
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#endif
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static int areanum; /* current allocation area */
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/*
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* other functions
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@ -483,29 +477,15 @@ struct io {
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#define INSUB() (e.iop->task == XGRAVE || e.iop->task == XDOLL)
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static struct ioarg temparg = { 0, 0, 0, AFID_NOBUF, 0 }; /* temporary for PUSHIO */
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static struct ioarg ioargstack[NPUSH];
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/* moved to G: static struct ioarg ioargstack[NPUSH]; */
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static struct io iostack[NPUSH];
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static struct iobuf sharedbuf = { AFID_NOBUF };
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static struct iobuf mainbuf = { AFID_NOBUF };
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/* moved to G: static struct iobuf sharedbuf = { AFID_NOBUF }; */
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/* moved to G: static struct iobuf mainbuf = { AFID_NOBUF }; */
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static unsigned bufid = AFID_ID; /* buffer id counter */
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#define PUSHIO(what,arg,gen) ((temparg.what = (arg)), pushio(&temparg,(gen)))
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#define RUN(what,arg,gen) ((temparg.what = (arg)), run(&temparg,(gen)))
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/*
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* parsing & execution environment
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*/
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static struct env {
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char *linep;
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struct io *iobase;
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struct io *iop;
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xint *errpt; /* void * */
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int iofd;
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struct env *oenv;
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} e;
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/*
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* input generators for IO structure
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*/
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@ -537,6 +517,7 @@ static void ioecho(char c);
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* IO control
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*/
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static void pushio(struct ioarg *argp, int (*f) (struct ioarg *));
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#define PUSHIO(what,arg,gen) ((temparg.what = (arg)), pushio(&temparg,(gen)))
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static int remap(int fd);
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static int openpipe(int *pv);
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static void closepipe(int *pv);
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@ -599,7 +580,6 @@ static int xstrcmp(char *p1, char *p2);
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static void glob0(char *a0, unsigned a1, int a2,
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int (*a3) (char *, char *));
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static void readhere(char **name, char *s, int ec);
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static void pushio(struct ioarg *argp, int (*f) (struct ioarg *));
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static int xxchar(struct ioarg *ap);
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struct here {
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@ -705,9 +685,6 @@ static struct brkcon *brklist;
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static int isbreak;
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static struct wdblock *wdlist;
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static struct wdblock *iolist;
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static char *trap[_NSIG + 1];
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static char ourtrap[_NSIG + 1];
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static int trapset; /* trap pending */
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#ifdef MSHDEBUG
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static struct var *mshdbg_var;
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@ -731,8 +708,7 @@ static int peeksym;
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static int nlseen;
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static int iounit = IODEFAULT;
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static YYSTYPE yylval;
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static char *elinep = line + sizeof(line) - 5;
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static char *elinep; /* done in main(): = line + sizeof(line) - 5 */
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static struct here *inhere; /* list of hear docs while parsing */
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static struct here *acthere; /* list of active here documents */
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@ -742,8 +718,20 @@ static struct region *areanxt; /* starting point of scan */
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static void *brktop;
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static void *brkaddr;
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/*
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* parsing & execution environment
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*/
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struct env {
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char *linep;
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struct io *iobase;
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struct io *iop;
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xint *errpt; /* void * */
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int iofd;
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struct env *oenv;
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};
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static struct env e = {
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line, /* linep: char ptr */
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NULL /* set to line in main() */, /* linep: char ptr */
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iostack, /* iobase: struct io ptr */
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iostack - 1, /* iop: struct io ptr */
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(xint *) NULL, /* errpt: void ptr for errors? */
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@ -751,6 +739,29 @@ static struct env e = {
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(struct env *) NULL /* oenv: struct env ptr */
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};
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struct globals {
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char ourtrap[_NSIG + 1];
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char *trap[_NSIG + 1];
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struct iobuf sharedbuf; /* in main(): set to { AFID_NOBUF } */
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struct iobuf mainbuf; /* in main(): set to { AFID_NOBUF } */
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struct ioarg ioargstack[NPUSH];
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char filechar_cmdbuf[BUFSIZ];
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char line[LINELIM];
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char child_cmd[LINELIM];
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};
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#define G (*ptr_to_globals)
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#define ourtrap (G.ourtrap )
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#define trap (G.trap )
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#define sharedbuf (G.sharedbuf )
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#define mainbuf (G.mainbuf )
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#define ioargstack (G.ioargstack )
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#define filechar_cmdbuf (G.filechar_cmdbuf)
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#define line (G.line )
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#define child_cmd (G.child_cmd )
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#ifdef MSHDEBUG
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void print_t(struct op *t)
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{
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@ -1517,7 +1528,7 @@ static void onintr(int s) /* ANSI C requires a parameter */
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#define CMASK 0377
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#define QUOTE 0200
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#define QMASK (CMASK&~QUOTE)
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#define QMASK (CMASK & ~QUOTE)
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#define NOT '!' /* might use ^ */
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static const char *cclass(const char *p, int sub)
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@ -4011,11 +4022,12 @@ static int dollar(int quoted)
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static int grave(int quoted)
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{
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/* moved to G: static char child_cmd[LINELIM]; */
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const char *cp;
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int i;
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int j;
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int pf[2];
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static char child_cmd[LINELIM];
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const char *src;
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char *dest;
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int count;
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@ -4823,15 +4835,15 @@ static int filechar(struct ioarg *ap)
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}
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#if ENABLE_FEATURE_EDITING
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if (interactive && isatty(ap->afile)) {
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static char mycommand[BUFSIZ];
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/* moved to G: static char filechar_cmdbuf[BUFSIZ]; */
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static int position = 0, size = 0;
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while (size == 0 || position >= size) {
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read_line_input(current_prompt, mycommand, BUFSIZ, line_input_state);
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size = strlen(mycommand);
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read_line_input(current_prompt, filechar_cmdbuf, BUFSIZ, line_input_state);
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size = strlen(filechar_cmdbuf);
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position = 0;
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}
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c = mycommand[position];
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c = filechar_cmdbuf[position];
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position++;
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return c;
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}
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@ -5176,6 +5188,12 @@ int msh_main(int argc, char **argv)
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char *name, **ap;
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int (*iof) (struct ioarg *);
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PTR_TO_GLOBALS = xzalloc(sizeof(G));
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sharedbuf.id = AFID_NOBUF;
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mainbuf.id = AFID_NOBUF;
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e.linep = line;
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elinep = line + sizeof(line) - 5;
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#if ENABLE_FEATURE_EDITING
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line_input_state = new_line_input_t(FOR_SHELL);
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#endif
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