* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <setjmp.h>
#include <sys/times.h>
-#include "busybox.h"
-
-extern char **environ;
+#include <setjmp.h>
+#ifdef STANDALONE
+# ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+# endif
+# include <sys/types.h>
+# include <sys/stat.h>
+# include <sys/wait.h>
+# include <signal.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <unistd.h>
+# include <string.h>
+# include <errno.h>
+# include <dirent.h>
+# include <fcntl.h>
+# include <ctype.h>
+# include <assert.h>
+# define bb_dev_null "/dev/null"
+# define DEFAULT_SHELL "/proc/self/exe"
+# define CONFIG_BUSYBOX_EXEC_PATH "/proc/self/exe"
+# define bb_banner "busybox standalone"
+# define ENABLE_FEATURE_SH_STANDALONE 0
+# define bb_msg_memory_exhausted "memory exhausted"
+# define xmalloc(size) malloc(size)
+# define msh_main(argc,argv) main(argc,argv)
+# define safe_read(fd,buf,count) read(fd,buf,count)
+# define nonblock_safe_read(fd,buf,count) read(fd,buf,count)
+# define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
+# define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+static int find_applet_by_name(const char *applet)
+{
+ return -1;
+}
+static char *utoa_to_buf(unsigned n, char *buf, unsigned buflen)
+{
+ unsigned i, out, res;
+ assert(sizeof(unsigned) == 4);
+ if (buflen) {
+ out = 0;
+ for (i = 1000000000; i; i /= 10) {
+ res = n / i;
+ if (res || out || i == 1) {
+ if (!--buflen) break;
+ out++;
+ n -= res*i;
+ *buf++ = '0' + res;
+ }
+ }
+ }
+ return buf;
+}
+static char *itoa_to_buf(int n, char *buf, unsigned buflen)
+{
+ if (buflen && n < 0) {
+ n = -n;
+ *buf++ = '-';
+ buflen--;
+ }
+ return utoa_to_buf((unsigned)n, buf, buflen);
+}
+static char local_buf[12];
+static char *itoa(int n)
+{
+ *(itoa_to_buf(n, local_buf, sizeof(local_buf))) = '\0';
+ return local_buf;
+}
+#else
+# include "busybox.h" /* for applet_names */
+#endif
-/*#define MSHDEBUG 1*/
+//#define MSHDEBUG 4
#ifdef MSHDEBUG
-int mshdbg = MSHDEBUG;
+static int mshdbg = MSHDEBUG;
-#define DBGPRINTF(x) if(mshdbg>0)printf x
-#define DBGPRINTF0(x) if(mshdbg>0)printf x
-#define DBGPRINTF1(x) if(mshdbg>1)printf x
-#define DBGPRINTF2(x) if(mshdbg>2)printf x
-#define DBGPRINTF3(x) if(mshdbg>3)printf x
-#define DBGPRINTF4(x) if(mshdbg>4)printf x
-#define DBGPRINTF5(x) if(mshdbg>5)printf x
-#define DBGPRINTF6(x) if(mshdbg>6)printf x
-#define DBGPRINTF7(x) if(mshdbg>7)printf x
-#define DBGPRINTF8(x) if(mshdbg>8)printf x
-#define DBGPRINTF9(x) if(mshdbg>9)printf x
+#define DBGPRINTF(x) if (mshdbg>0) printf x
+#define DBGPRINTF0(x) if (mshdbg>0) printf x
+#define DBGPRINTF1(x) if (mshdbg>1) printf x
+#define DBGPRINTF2(x) if (mshdbg>2) printf x
+#define DBGPRINTF3(x) if (mshdbg>3) printf x
+#define DBGPRINTF4(x) if (mshdbg>4) printf x
+#define DBGPRINTF5(x) if (mshdbg>5) printf x
+#define DBGPRINTF6(x) if (mshdbg>6) printf x
+#define DBGPRINTF7(x) if (mshdbg>7) printf x
+#define DBGPRINTF8(x) if (mshdbg>8) printf x
+#define DBGPRINTF9(x) if (mshdbg>9) printf x
-int mshdbg_rc = 0;
+static int mshdbg_rc = 0;
-#define RCPRINTF(x) if(mshdbg_rc)printf x
+#define RCPRINTF(x) if (mshdbg_rc) printf x
#else
/*
* values returned by wait
*/
-#define WAITSIG(s) ((s)&0177)
-#define WAITVAL(s) (((s)>>8)&0377)
-#define WAITCORE(s) (((s)&0200)!=0)
+#define WAITSIG(s) ((s) & 0177)
+#define WAITVAL(s) (((s) >> 8) & 0377)
+#define WAITCORE(s) (((s) & 0200) != 0)
/*
* library and system definitions
*/
-typedef void xint; /* base type of jmp_buf, for not broken compilers */
+typedef void xint; /* base type of jmp_buf, for not broken compilers */
/*
* shell components
*/
-
-#define QUOTE 0200
-
#define NOBLOCK ((struct op *)NULL)
#define NOWORD ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE ((int *)NULL)
-
/*
* redirection
*/
struct ioword {
- short io_unit; /* unit affected */
- short io_flag; /* action (below) */
- char *io_name; /* file name */
+ smallint io_flag; /* action (below) */
+ int io_fd; /* fd affected */
+ char *io_name; /* file name */
};
-#define IOREAD 1 /* < */
-#define IOHERE 2 /* << (here file) */
-#define IOWRITE 4 /* > */
-#define IOCAT 8 /* >> */
-#define IOXHERE 16 /* ${}, ` in << */
-#define IODUP 32 /* >&digit */
-#define IOCLOSE 64 /* >&- */
+#define IOREAD 1 /* < */
+#define IOHERE 2 /* << (here file) */
+#define IOWRITE 4 /* > */
+#define IOCAT 8 /* >> */
+#define IOXHERE 16 /* ${}, ` in << */
+#define IODUP 32 /* >&digit */
+#define IOCLOSE 64 /* >&- */
-#define IODEFAULT (-1) /* token for default IO unit */
+#define IODEFAULT (-1) /* "default" IO fd */
/*
* Might eventually use a union.
*/
struct op {
- int type; /* operation type, see below */
- char **words; /* arguments to a command */
- struct ioword **ioact; /* IO actions (eg, < > >>) */
+ smallint op_type; /* operation type, see Txxxx below */
+ char **op_words; /* arguments to a command */
+ struct ioword **ioact; /* IO actions (eg, < > >>) */
struct op *left;
struct op *right;
- char *str; /* identifier for case and for */
+ char *str; /* identifier for case and for */
};
-#define TCOM 1 /* command */
-#define TPAREN 2 /* (c-list) */
-#define TPIPE 3 /* a | b */
-#define TLIST 4 /* a [&;] b */
-#define TOR 5 /* || */
-#define TAND 6 /* && */
-#define TFOR 7
-#define TDO 8
-#define TCASE 9
-#define TIF 10
-#define TWHILE 11
-#define TUNTIL 12
-#define TELIF 13
-#define TPAT 14 /* pattern in case */
-#define TBRACE 15 /* {c-list} */
-#define TASYNC 16 /* c & */
+#define TCOM 1 /* command */
+#define TPAREN 2 /* (c-list) */
+#define TPIPE 3 /* a | b */
+#define TLIST 4 /* a [&;] b */
+#define TOR 5 /* || */
+#define TAND 6 /* && */
+#define TFOR 7
+#define TDO 8
+#define TCASE 9
+#define TIF 10
+#define TWHILE 11
+#define TUNTIL 12
+#define TELIF 13
+#define TPAT 14 /* pattern in case */
+#define TBRACE 15 /* {c-list} */
+#define TASYNC 16 /* c & */
/* Added to support "." file expansion */
-#define TDOT 17
+#define TDOT 17
/* Strings for names to make debug easier */
#ifdef MSHDEBUG
};
#endif
-/*
- * actions determining the environment of a process
- */
-#define BIT(i) (1<<(i))
-#define FEXEC BIT(0) /* execute without forking */
-
-#define AREASIZE (90000)
+#define AREASIZE (90000)
/*
* flags to control evaluation of words
*/
-#define DOSUB 1 /* interpret $, `, and quotes */
-#define DOBLANK 2 /* perform blank interpretation */
-#define DOGLOB 4 /* interpret [?* */
-#define DOKEY 8 /* move words with `=' to 2nd arg. list */
-#define DOTRIM 16 /* trim resulting string */
+#define DOSUB 1 /* interpret $, `, and quotes */
+#define DOBLANK 2 /* perform blank interpretation */
+#define DOGLOB 4 /* interpret [?* */
+#define DOKEY 8 /* move words with `=' to 2nd arg. list */
+#define DOTRIM 16 /* trim resulting string */
-#define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM)
-
-
-/* PROTOTYPES */
-static int newfile(char *s);
+#define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM)
struct brkcon {
};
-/*
- * flags:
- * -e: quit on error
- * -k: look for name=value everywhere on command line
- * -n: no execution
- * -t: exit after reading and executing one command
- * -v: echo as read
- * -x: trace
- * -u: unset variables net diagnostic
- */
-static char flags['z' - 'a' + 1];
-/* this looks weird, but is OK ... we index flag with 'a'...'z' */
-static char *flag = flags - 'a';
-
-static char *null; /* null value for variable */
-static int intr; /* interrupt pending */
-
-static char *trap[_NSIG + 1];
-static char ourtrap[_NSIG + 1];
-static int trapset; /* trap pending */
+static smallint trapset; /* trap pending (signal number) */
-static int heedint; /* heed interrupt signals */
+static smallint yynerrs; /* yacc (flag) */
-static int yynerrs; /* yacc */
-
-static char line[LINELIM];
-static char *elinep;
+/* moved to G: static char line[LINELIM]; */
#if ENABLE_FEATURE_EDITING
static char *current_prompt;
static line_input_t *line_input_state;
#endif
-static int areanum; /* current allocation area */
-
/*
* other functions
/* -------- area stuff -------- */
-#define REGSIZE sizeof(struct region)
-#define GROWBY (256)
-/* #define SHRINKBY (64) */
-#undef SHRINKBY
-#define FREE (32767)
-#define BUSY (0)
-#define ALIGN (sizeof(int)-1)
+#define REGSIZE sizeof(struct region)
+#define GROWBY (256)
+/* #define SHRINKBY (64) */
+#undef SHRINKBY
+#define FREE (32767)
+#define BUSY (0)
+#define ALIGN (sizeof(int)-1)
struct region {
static int yyparse(void);
-static int execute(struct op *t, int *pin, int *pout, int act);
-
-
-#define AFID_NOBUF (~0)
-#define AFID_ID 0
-
/* -------- io.h -------- */
/* io buffer */
char **awordlist;
int afile; /* file descriptor */
unsigned afid; /* buffer id */
- long afpos; /* file position */
+ off_t afpos; /* file position */
struct iobuf *afbuf; /* buffer for this file */
};
char xchar; /* for `'s */
char task; /* reason for pushed IO */
};
-
-#define XOTHER 0 /* none of the below */
-#define XDOLL 1 /* expanding ${} */
-#define XGRAVE 2 /* expanding `'s */
-#define XIO 3 /* file IO */
-
-/* in substitution */
-#define INSUB() (e.iop->task == XGRAVE || e.iop->task == XDOLL)
-
-static struct ioarg temparg = { 0, 0, 0, AFID_NOBUF, 0 }; /* temporary for PUSHIO */
-static struct ioarg ioargstack[NPUSH];
-static struct io iostack[NPUSH];
-static struct iobuf sharedbuf = { AFID_NOBUF };
-static struct iobuf mainbuf = { AFID_NOBUF };
-static unsigned bufid = AFID_ID; /* buffer id counter */
-
-#define PUSHIO(what,arg,gen) ((temparg.what = (arg)), pushio(&temparg,(gen)))
-#define RUN(what,arg,gen) ((temparg.what = (arg)), run(&temparg,(gen)))
-
-
-/*
- * parsing & execution environment
- */
-static struct env {
- char *linep;
- struct io *iobase;
- struct io *iop;
- xint *errpt; /* void * */
- int iofd;
- struct env *oenv;
-} e;
+/* ->task: */
+#define XOTHER 0 /* none of the below */
+#define XDOLL 1 /* expanding ${} */
+#define XGRAVE 2 /* expanding `'s */
+#define XIO 3 /* file IO */
/*
* IO control
*/
static void pushio(struct ioarg *argp, int (*f) (struct ioarg *));
+#define PUSHIO(what,arg,gen) ((temparg.what = (arg)), pushio(&temparg,(gen)))
static int remap(int fd);
static int openpipe(int *pv);
static void closepipe(int *pv);
/* -------- misc stuff -------- */
-static int forkexec(struct op *t, int *pin, int *pout, int act, char **wp);
+static int dolabel(struct op *t, char **args);
+static int dohelp(struct op *t, char **args);
+static int dochdir(struct op *t, char **args);
+static int doshift(struct op *t, char **args);
+static int dologin(struct op *t, char **args);
+static int doumask(struct op *t, char **args);
+static int doexec(struct op *t, char **args);
+static int dodot(struct op *t, char **args);
+static int dowait(struct op *t, char **args);
+static int doread(struct op *t, char **args);
+static int doeval(struct op *t, char **args);
+static int dotrap(struct op *t, char **args);
+static int dobreak(struct op *t, char **args);
+static int doexit(struct op *t, char **args);
+static int doexport(struct op *t, char **args);
+static int doreadonly(struct op *t, char **args);
+static int doset(struct op *t, char **args);
+static int dotimes(struct op *t, char **args);
+static int docontinue(struct op *t, char **args);
+
+static int forkexec(struct op *t, int *pin, int *pout, int no_fork, char **wp);
+static int execute(struct op *t, int *pin, int *pout, int no_fork);
static int iosetup(struct ioword *iop, int pipein, int pipeout);
static void brkset(struct brkcon *bc);
-static int dolabel(struct op *t);
-static int dohelp(struct op *t);
-static int dochdir(struct op *t);
-static int doshift(struct op *t);
-static int dologin(struct op *t);
-static int doumask(struct op *t);
-static int doexec(struct op *t);
-static int dodot(struct op *t);
-static int dowait(struct op *t);
-static int doread(struct op *t);
-static int doeval(struct op *t);
-static int dotrap(struct op *t);
static int getsig(char *s);
static void setsig(int n, sighandler_t f);
static int getn(char *as);
-static int dobreak(struct op *t);
-static int docontinue(struct op *t);
static int brkcontin(char *cp, int val);
-static int doexit(struct op *t);
-static int doexport(struct op *t);
-static int doreadonly(struct op *t);
static void rdexp(char **wp, void (*f) (struct var *), int key);
static void badid(char *s);
-static int doset(struct op *t);
static void varput(char *s, int out);
-static int dotimes(struct op *t);
static int expand(const char *cp, struct wdblock **wbp, int f);
static char *blank(int f);
static int dollar(int quoted);
static void globname(char *we, char *pp);
static char *generate(char *start1, char *end1, char *middle, char *end);
static int anyspcl(struct wdblock *wb);
-static int xstrcmp(char *p1, char *p2);
-static void glob0(char *a0, unsigned a1, int a2,
- int (*a3) (char *, char *));
static void readhere(char **name, char *s, int ec);
-static void pushio(struct ioarg *argp, int (*f) (struct ioarg *));
static int xxchar(struct ioarg *ap);
struct here {
char *h_tag;
- int h_dosub;
+ char h_dosub;
struct ioword *h_iop;
struct here *h_next;
};
-static const char * const signame[] = {
+static const char *const signame[] = {
"Signal 0",
"Hangup",
NULL, /* interrupt */
"SIGUSR2",
NULL, /* broken pipe */
"Alarm clock",
- "Terminated",
+ "Terminated"
};
-#define NSIGNAL (sizeof(signame)/sizeof(signame[0]))
-
-struct res {
- const char *r_name;
- int r_val;
-};
-static const struct res restab[] = {
- {"for", FOR},
- {"case", CASE},
- {"esac", ESAC},
- {"while", WHILE},
- {"do", DO},
- {"done", DONE},
- {"if", IF},
- {"in", IN},
- {"then", THEN},
- {"else", ELSE},
- {"elif", ELIF},
- {"until", UNTIL},
- {"fi", FI},
- {";;", BREAK},
- {"||", LOGOR},
- {"&&", LOGAND},
- {"{", '{'},
- {"}", '}'},
- {".", DOT},
- {0, 0},
-};
+typedef int (*builtin_func_ptr)(struct op *, char **);
struct builtincmd {
const char *name;
- int (*builtinfunc) (struct op * t);
+ builtin_func_ptr builtinfunc;
};
+
static const struct builtincmd builtincmds[] = {
- {".", dodot},
- {":", dolabel},
- {"break", dobreak},
- {"cd", dochdir},
- {"continue", docontinue},
- {"eval", doeval},
- {"exec", doexec},
- {"exit", doexit},
- {"export", doexport},
- {"help", dohelp},
- {"login", dologin},
- {"newgrp", dologin},
- {"read", doread},
- {"readonly", doreadonly},
- {"set", doset},
- {"shift", doshift},
- {"times", dotimes},
- {"trap", dotrap},
- {"umask", doumask},
- {"wait", dowait},
- {0, 0}
+ { "." , dodot },
+ { ":" , dolabel },
+ { "break" , dobreak },
+ { "cd" , dochdir },
+ { "continue", docontinue },
+ { "eval" , doeval },
+ { "exec" , doexec },
+ { "exit" , doexit },
+ { "export" , doexport },
+ { "help" , dohelp },
+ { "login" , dologin },
+ { "newgrp" , dologin },
+ { "read" , doread },
+ { "readonly", doreadonly },
+ { "set" , doset },
+ { "shift" , doshift },
+ { "times" , dotimes },
+ { "trap" , dotrap },
+ { "umask" , doumask },
+ { "wait" , dowait },
+ { NULL , NULL },
};
static struct op *scantree(struct op *);
-static struct op *dowholefile(int, int);
+static struct op *dowholefile(int /*, int*/);
/* Globals */
static char **dolv;
static int dolc;
static int exstat;
-static char gflg;
-static int interactive; /* Is this an interactive shell */
-static int execflg;
-static int multiline; /* \n changed to ; */
-static struct op *outtree; /* result from parser */
+static smallint gflg; /* (seems to be a parse error indicator) */
+static smallint interactive; /* Is this an interactive shell */
+static smallint execflg;
+static smallint isbreak; /* "break" statement was seen */
+static int multiline; /* '\n' changed to ';' (counter) */
+static struct op *outtree; /* result from parser */
static xint *failpt;
static xint *errpt;
static struct brkcon *brklist;
-static int isbreak;
static struct wdblock *wdlist;
static struct wdblock *iolist;
-static char *trap[_NSIG + 1];
-static char ourtrap[_NSIG + 1];
-static int trapset; /* trap pending */
#ifdef MSHDEBUG
static struct var *mshdbg_var;
static struct var *shell; /* shell to interpret command files */
static struct var *ifs; /* field separators */
-static int areanum; /* current allocation area */
-static int intr;
+static int areanum; /* current allocation area */
+static smallint intr; /* interrupt pending (bool) */
+static smallint heedint = 1; /* heed interrupt signals (bool) */
static int inparse;
-static char *null = (char*)"";
-static int heedint = 1;
-static void (*qflag) (int) = SIG_IGN;
+static char *null = (char*)""; /* null value for variable */
+static void (*qflag)(int) = SIG_IGN;
static int startl;
static int peeksym;
static int nlseen;
static int iounit = IODEFAULT;
static YYSTYPE yylval;
-static char *elinep = line + sizeof(line) - 5;
-
+static char *elinep; /* done in main(): = line + sizeof(line) - 5 */
static struct here *inhere; /* list of hear docs while parsing */
static struct here *acthere; /* list of active here documents */
static void *brktop;
static void *brkaddr;
-static struct env e = {
- line, /* linep: char ptr */
- iostack, /* iobase: struct io ptr */
- iostack - 1, /* iop: struct io ptr */
- (xint *) NULL, /* errpt: void ptr for errors? */
- FDBASE, /* iofd: file desc */
- (struct env *) NULL /* oenv: struct env ptr */
+#define AFID_NOBUF (~0)
+#define AFID_ID 0
+
+
+/*
+ * parsing & execution environment
+ */
+struct env {
+ char *linep;
+ struct io *iobase;
+ struct io *iop;
+ xint *errpt; /* void * */
+ int iofd;
+ struct env *oenv;
+};
+
+
+struct globals {
+ struct env global_env;
+ struct ioarg temparg; // = { .afid = AFID_NOBUF }; /* temporary for PUSHIO */
+ unsigned bufid; // = AFID_ID; /* buffer id counter */
+ char ourtrap[_NSIG + 1];
+ char *trap[_NSIG + 1];
+ struct iobuf sharedbuf; /* in main(): set to { AFID_NOBUF } */
+ struct iobuf mainbuf; /* in main(): set to { AFID_NOBUF } */
+ struct ioarg ioargstack[NPUSH];
+ /*
+ * flags:
+ * -e: quit on error
+ * -k: look for name=value everywhere on command line
+ * -n: no execution
+ * -t: exit after reading and executing one command
+ * -v: echo as read
+ * -x: trace
+ * -u: unset variables net diagnostic
+ */
+ char flags['z' - 'a' + 1];
+ char filechar_cmdbuf[BUFSIZ];
+ char line[LINELIM];
+ char child_cmd[LINELIM];
+
+ struct io iostack[NPUSH];
+
+ char grave__var_name[LINELIM];
+ char grave__alt_value[LINELIM];
};
-#ifdef MSHDEBUG
-void print_t(struct op *t)
-{
- DBGPRINTF(("T: t=%p, type %s, words=%p, IOword=%p\n", t,
- T_CMD_NAMES[t->type], t->words, t->ioact));
+#define G (*ptr_to_globals)
+#define global_env (G.global_env )
+#define temparg (G.temparg )
+#define bufid (G.bufid )
+#define ourtrap (G.ourtrap )
+#define trap (G.trap )
+#define sharedbuf (G.sharedbuf )
+#define mainbuf (G.mainbuf )
+#define ioargstack (G.ioargstack )
+/* this looks weird, but is OK ... we index FLAG with 'a'...'z' */
+#define FLAG (G.flags - 'a' )
+#define filechar_cmdbuf (G.filechar_cmdbuf)
+#define line (G.line )
+#define child_cmd (G.child_cmd )
+#define iostack (G.iostack )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ global_env.linep = line; \
+ global_env.iobase = iostack; \
+ global_env.iop = iostack - 1; \
+ global_env.iofd = FDBASE; \
+ temparg.afid = AFID_NOBUF; \
+ bufid = AFID_ID; \
+} while (0)
- if (t->words) {
- DBGPRINTF(("T: W1: %s", t->words[0]));
- }
-}
-void print_tree(struct op *head)
+/* in substitution */
+#define INSUB() (global_env.iop->task == XGRAVE || global_env.iop->task == XDOLL)
+
+#define RUN(what, arg, gen) ((temparg.what = (arg)), run(&temparg, (gen)))
+
+#ifdef MSHDEBUG
+static void print_tree(struct op *head)
{
if (head == NULL) {
DBGPRINTF(("PRINT_TREE: no tree\n"));
exstat = -1;
}
prs("\n");
- if (flag['e'])
+ if (FLAG['e'])
leave();
}
static void err(const char *s)
{
warn(s);
- if (flag['n'])
+ if (FLAG['n'])
return;
if (!interactive)
leave();
- if (e.errpt)
- longjmp(e.errpt, 1);
+ if (global_env.errpt)
+ longjmp(global_env.errpt, 1);
closeall();
- e.iop = e.iobase = iostack;
+ global_env.iop = global_env.iobase = iostack;
}
#endif
}
-static char *space(int n)
+static void *get_space(int n)
{
char *cp;
{
char *cp;
- cp = space(strlen(s) + 1);
+ cp = get_space(strlen(s) + 1);
if (cp == NULL) {
// FIXME: I highly doubt this is good.
return (char*)"";
return vp;
cp = findeq(n);
- vp = (struct var *) space(sizeof(*vp));
- if (vp == 0 || (vp->name = space((int) (cp - n) + 2)) == 0) {
+ vp = get_space(sizeof(*vp));
+ if (vp == 0 || (vp->name = get_space((int) (cp - n) + 2)) == NULL) {
dummy.name = dummy.value = (char*)"";
return &dummy;
}
if (vp->status & RONLY) {
xp = vp->name;
while (*xp && *xp != '=')
- putc(*xp++, stderr);
+ fputc(*xp++, stderr);
err(" is read-only");
return;
}
fl = 0;
if (name == NULL) {
- xp = space(strlen(vp->name) + strlen(val) + 2);
+ xp = get_space(strlen(vp->name) + strlen(val) + 2);
if (xp == NULL)
return;
/* make string: name=value */
unsigned char c;
DBGPRINTF7(("ISASSIGN: enter, s=%s\n", s));
- /* no isalpha() - we shouldn't use locale */
c = *s;
- if (c != '_'
- && (unsigned)((c|0x20) - 'a') > 25 /* not letter */
- ) {
+ /* no isalpha() - we shouldn't use locale */
+ /* c | 0x20 - lowercase (Latin) letters */
+ if (c != '_' && (unsigned)((c|0x20) - 'a') > 25)
+ /* not letter */
return 0;
- }
+
while (1) {
c = *++s;
- if (c == '\0')
- return 0;
if (c == '=')
return 1;
- c |= 0x20; /* lowercase letters, doesn't affect numbers */
+ if (c == '\0')
+ return 0;
if (c != '_'
&& (unsigned)(c - '0') > 9 /* not number */
- && (unsigned)(c - 'a') > 25 /* not letter */
+ && (unsigned)((c|0x20) - 'a') > 25 /* not letter */
) {
return 0;
}
cp = m;
for (c = 'a'; c <= 'z'; c++)
- if (flag[c])
+ if (FLAG[c])
*cp++ = c;
*cp = '\0';
setval(lookup("-"), m);
f = 0;
if (NOT_LONE_DASH(s)) {
DBGPRINTF(("NEWFILE: s is %s\n", s));
- f = open(s, 0);
+ f = open(s, O_RDONLY);
if (f < 0) {
prs(s);
err(": cannot open");
return dotnode;
}
- if (head->words == NULL)
+ if (head->op_words == NULL)
return NULL;
DBGPRINTF5(("SCANTREE: checking node %p\n", head));
- if ((head->type != TDOT) && (strcmp(".", head->words[0]) == 0)) {
+ if ((head->op_type != TDOT) && LONE_CHAR(head->op_words[0], '.')) {
DBGPRINTF5(("SCANTREE: dot found in node %p\n", head));
return head;
}
DBGPRINTF(("ONECOMMAND: enter, outtree=%p\n", outtree));
- while (e.oenv)
+ while (global_env.oenv)
quitenv();
areanum = 1;
freehere(areanum);
freearea(areanum);
garbage();
- wdlist = 0;
- iolist = 0;
- e.errpt = 0;
- e.linep = line;
+ wdlist = NULL;
+ iolist = NULL;
+ global_env.errpt = NULL;
+ global_env.linep = line;
yynerrs = 0;
multiline = 0;
inparse = 1;
if (setjmp(failpt) || yyparse() || intr) {
DBGPRINTF(("ONECOMMAND: this is not good.\n"));
- while (e.oenv)
+ while (global_env.oenv)
quitenv();
scraphere();
if (!interactive && intr)
intr = 0;
execflg = 0;
- if (!flag['n']) {
+ if (!FLAG['n']) {
DBGPRINTF(("ONECOMMAND: calling execute, t=outtree=%p\n",
outtree));
- execute(outtree, NOPIPE, NOPIPE, 0);
+ execute(outtree, NOPIPE, NOPIPE, /* no_fork: */ 0);
}
if (!interactive && intr) {
return 1;
}
- ep = (struct env *) space(sizeof(*ep));
+ ep = get_space(sizeof(*ep));
if (ep == NULL) {
- while (e.oenv)
+ while (global_env.oenv)
quitenv();
fail();
}
- *ep = e;
- e.oenv = ep;
- e.errpt = errpt;
+ *ep = global_env;
+ global_env.oenv = ep;
+ global_env.errpt = errpt;
return 0;
}
struct env *ep;
int fd;
- DBGPRINTF(("QUITENV: e.oenv=%p\n", e.oenv));
+ DBGPRINTF(("QUITENV: global_env.oenv=%p\n", global_env.oenv));
- ep = e.oenv;
+ ep = global_env.oenv;
if (ep != NULL) {
- fd = e.iofd;
- e = *ep;
+ fd = global_env.iofd;
+ global_env = *ep;
/* should close `'d files */
DELETE(ep);
- while (--fd >= e.iofd)
+ while (--fd >= global_env.iofd)
close(fd);
}
}
PUSHIO(afile, f, filechar);
}
-static void onintr(int s) /* ANSI C requires a parameter */
+static void onintr(int s ATTRIBUTE_UNUSED) /* ANSI C requires a parameter */
{
signal(SIGINT, onintr);
intr = 1;
#define CMASK 0377
#define QUOTE 0200
-#define QMASK (CMASK&~QUOTE)
+#define QMASK (CMASK & ~QUOTE)
#define NOT '!' /* might use ^ */
static const char *cclass(const char *p, int sub)
static void yyerror(const char *s) ATTRIBUTE_NORETURN;
static void yyerror(const char *s)
{
- yynerrs++;
- if (interactive && e.iop <= iostack) {
+ yynerrs = 1;
+ if (interactive && global_env.iop <= iostack) {
multiline = 0;
- while (eofc() == 0 && yylex(0) != '\n');
+ while (eofc() == 0 && yylex(0) != '\n')
+ continue;
}
err(s);
fail();
yynerrs = 0;
outtree = c_list();
musthave('\n', 0);
- return (yynerrs != 0);
+ return yynerrs; /* 0/1 */
}
static struct op *pipeline(int cf)
zzerr();
}
- if (t->type != TPAREN && t->type != TCOM) {
+ if (t->op_type != TPAREN && t->op_type != TCOM) {
/* shell statement */
t = block(TPAREN, t, NOBLOCK, NOWORDS);
}
}
t = block(c == LOGAND ? TAND : TOR, t, p, NOWORDS);
- } /* WHILE */
+ }
peeksym = c;
}
t = block(TASYNC, t, NOBLOCK, NOWORDS);
while ((c = yylex(0)) == ';' || c == '&'
- || (multiline && c == '\n')) {
-
+ || (multiline && c == '\n')
+ ) {
p = andor();
if (p== NULL)
return t;
case WORD:
if (t == NULL) {
t = newtp();
- t->type = TCOM;
+ t->op_type = TCOM;
}
peeksym = 0;
word(yylval.cp);
if (iolist == NULL)
return NULL;
t = newtp();
- t->type = TCOM;
+ t->op_type = TCOM;
}
break;
case FOR:
t = newtp();
- t->type = TFOR;
+ t->op_type = TFOR;
musthave(WORD, 0);
startl = 1;
t->str = yylval.cp;
multiline++;
- t->words = wordlist();
+ t->op_words = wordlist();
c = yylex(0);
if (c != '\n' && c != ';')
peeksym = c;
case UNTIL:
multiline++;
t = newtp();
- t->type = c == WHILE ? TWHILE : TUNTIL;
+ t->op_type = (c == WHILE ? TWHILE : TUNTIL);
t->left = c_list();
t->right = dogroup(1);
- t->words = NULL;
+ /* t->op_words = NULL; - newtp() did this */
multiline--;
break;
case CASE:
t = newtp();
- t->type = TCASE;
+ t->op_type = TCASE;
musthave(WORD, 0);
t->str = yylval.cp;
startl++;
case IF:
multiline++;
t = newtp();
- t->type = TIF;
+ t->op_type = TIF;
t->left = c_list();
t->right = thenpart();
musthave(FI, 0);
case DOT:
t = newtp();
- t->type = TDOT;
+ t->op_type = TDOT;
- musthave(WORD, 0); /* gets name of file */
+ musthave(WORD, 0); /* gets name of file */
DBGPRINTF7(("COMMAND: DOT clause, yylval.cp is %s\n", yylval.cp));
- word(yylval.cp); /* add word to wdlist */
- word(NOWORD); /* terminate wdlist */
- t->words = copyw(); /* dup wdlist */
+ word(yylval.cp); /* add word to wdlist */
+ word(NOWORD); /* terminate wdlist */
+ t->op_words = copyw(); /* dup wdlist */
break;
}
- while (synio(0));
+ while (synio(0))
+ continue;
t = namelist(t);
iolist = iosave;
return t;
}
-static struct op *dowholefile(int type, int mark)
+static struct op *dowholefile(int type /*, int mark*/)
{
struct op *t;
- DBGPRINTF(("DOWHOLEFILE: enter, type=%d, mark=%d\n", type, mark));
+ DBGPRINTF(("DOWHOLEFILE: enter, type=%d\n", type /*, mark*/));
multiline++;
t = c_list();
return NULL;
}
t = newtp();
- t->type = 0;
+ /*t->op_type = 0; - newtp() did this */
t->left = c_list();
if (t->left == NULL)
zzerr();
case ELIF:
t = newtp();
- t->type = TELIF;
+ t->op_type = TELIF;
t->left = c_list();
t->right = thenpart();
return t;
DBGPRINTF7(("CASEPART: enter...\n"));
t = newtp();
- t->type = TPAT;
- t->words = pattern();
+ t->op_type = TPAT;
+ t->op_words = pattern();
musthave(')', 0);
t->left = c_list();
peeksym = yylex(CONTIN);
DBGPRINTF7(("BLOCK: enter, type=%d (%s)\n", type, T_CMD_NAMES[type]));
t = newtp();
- t->type = type;
+ t->op_type = type;
t->left = t1;
t->right = t2;
- t->words = wp;
+ t->op_words = wp;
- DBGPRINTF7(("BLOCK: inserted %p between %p and %p\n", t, t1,
- t2));
+ DBGPRINTF7(("BLOCK: inserted %p between %p and %p\n", t, t1, t2));
return t;
}
/* See if given string is a shell multiline (FOR, IF, etc) */
static int rlookup(char *n)
{
+ struct res {
+ char r_name[6];
+ int16_t r_val;
+ };
+ static const struct res restab[] = {
+ { "for" , FOR },
+ { "case" , CASE },
+ { "esac" , ESAC },
+ { "while", WHILE },
+ { "do" , DO },
+ { "done" , DONE },
+ { "if" , IF },
+ { "in" , IN },
+ { "then" , THEN },
+ { "else" , ELSE },
+ { "elif" , ELIF },
+ { "until", UNTIL },
+ { "fi" , FI },
+ { ";;" , BREAK },
+ { "||" , LOGOR },
+ { "&&" , LOGAND },
+ { "{" , '{' },
+ { "}" , '}' },
+ { "." , DOT },
+ { },
+ };
+
const struct res *rp;
DBGPRINTF7(("RLOOKUP: enter, n is %s\n", n));
- for (rp = restab; rp->r_name; rp++)
+ for (rp = restab; rp->r_name[0]; rp++)
if (strcmp(rp->r_name, n) == 0) {
DBGPRINTF7(("RLOOKUP: match, returning %d\n", rp->r_val));
return rp->r_val; /* Return numeric code for shell multiline */
struct op *t;
t = (struct op *) tree(sizeof(*t));
- t->type = 0;
- t->words = NULL;
- t->ioact = NULL;
- t->left = NULL;
- t->right = NULL;
- t->str = NULL;
+ memset(t, 0, sizeof(*t));
DBGPRINTF3(("NEWTP: allocated %p\n", t));
static struct op *namelist(struct op *t)
{
-
DBGPRINTF7(("NAMELIST: enter, t=%p, type %s, iolist=%p\n", t,
- T_CMD_NAMES[t->type], iolist));
+ T_CMD_NAMES[t->op_type], iolist));
if (iolist) {
iolist = addword((char *) NULL, iolist);
} else
t->ioact = NULL;
- if (t->type != TCOM) {
- if (t->type != TPAREN && t->ioact != NULL) {
+ if (t->op_type != TCOM) {
+ if (t->op_type != TPAREN && t->ioact != NULL) {
t = block(TPAREN, t, NOBLOCK, NOWORDS);
t->ioact = t->left->ioact;
t->left->ioact = NULL;
}
word(NOWORD);
- t->words = copyw();
+ t->op_words = copyw();
return t;
}
char **wd;
wd = getwords(wdlist);
- wdlist = 0;
+ wdlist = NULL;
return wd;
}
struct ioword **iop;
iop = (struct ioword **) getwords(iolist);
- iolist = 0;
+ iolist = NULL;
return iop;
}
struct ioword *iop;
iop = (struct ioword *) tree(sizeof(*iop));
- iop->io_unit = u;
+ iop->io_fd = u;
iop->io_flag = f;
iop->io_name = cp;
iolist = addword((char *) iop, iolist);
atstart = startl;
startl = 0;
yylval.i = 0;
- e.linep = line;
+ global_env.linep = line;
/* MALAMO */
line[LINELIM - 1] = '\0';
loop:
while ((c = my_getc(0)) == ' ' || c == '\t') /* Skip whitespace */
- ;
+ continue;
switch (c) {
default:
iounit = c - '0';
goto loop;
}
- *e.linep++ = c;
+ *global_env.linep++ = c;
c = c1;
}
break;
- case '#': /* Comment, skip to next newline or End-of-string */
- while ((c = my_getc(0)) != '\0' && c != '\n');
+ case '#': /* Comment, skip to next newline or End-of-string */
+ while ((c = my_getc(0)) != '\0' && c != '\n')
+ continue;
unget(c);
goto loop;
case '$':
DBGPRINTF9(("YYLEX: found $\n"));
- *e.linep++ = c;
+ *global_env.linep++ = c;
c = my_getc(0);
if (c == '{') {
c = collect(c, '}');
gethere();
startl = 1;
if (multiline || cf & CONTIN) {
- if (interactive && e.iop <= iostack) {
+ if (interactive && global_env.iop <= iostack) {
#if ENABLE_FEATURE_EDITING
current_prompt = cprompt->value;
#else
pack:
while ((c = my_getc(0)) != '\0' && !any(c, "`$ '\"\t;&<>()|^\n")) {
- if (e.linep >= elinep)
+ if (global_env.linep >= elinep)
err("word too long");
else
- *e.linep++ = c;
+ *global_env.linep++ = c;
};
unget(c);
if (any(c, "\"'`$"))
goto loop;
- *e.linep++ = '\0';
+ *global_env.linep++ = '\0';
if (atstart) {
c = rlookup(line);
DBGPRINTF8(("COLLECT: enter, c=%d, c1=%d\n", c, c1));
- *e.linep++ = c;
+ *global_env.linep++ = c;
while ((c = my_getc(c1)) != c1) {
if (c == 0) {
unget(c);
yyerror(s);
return YYERRCODE;
}
- if (interactive && c == '\n' && e.iop <= iostack) {
+ if (interactive && c == '\n' && global_env.iop <= iostack) {
#if ENABLE_FEATURE_EDITING
current_prompt = cprompt->value;
#else
prs(cprompt->value);
#endif
}
- *e.linep++ = c;
+ *global_env.linep++ = c;
}
- *e.linep++ = c;
+ *global_env.linep++ = c;
DBGPRINTF8(("COLLECT: return 0, line is %s\n", line));
return NULL;
}
- DBGPRINTF3(("FIND1CASE: enter, t->type=%d (%s)\n", t->type,
- T_CMD_NAMES[t->type]));
+ DBGPRINTF3(("FIND1CASE: enter, t->op_type=%d (%s)\n", t->op_type,
+ T_CMD_NAMES[t->op_type]));
- if (t->type == TLIST) {
+ if (t->op_type == TLIST) {
tp = find1case(t->left, w);
if (tp != NULL) {
DBGPRINTF3(("FIND1CASE: found one to the left, returning tp=%p\n", tp));
} else
t1 = t;
- for (wp = t1->words; *wp;) {
+ for (wp = t1->op_words; *wp;) {
cp = evalstr(*wp++, DOSUB);
if (cp && gmatch(w, cp)) {
DBGPRINTF3(("FIND1CASE: returning &t1->left= %p.\n",
* execute tree
*/
-static int execute(struct op *t, int *pin, int *pout, int act)
+static int execute(struct op *t, int *pin, int *pout, int no_fork)
{
struct op *t1;
volatile int i, rv, a;
return 0;
}
- DBGPRINTF(("EXECUTE: t=%p, t->type=%d (%s), t->words is %s\n", t,
- t->type, T_CMD_NAMES[t->type],
- ((t->words == NULL) ? "NULL" : t->words[0])));
+ DBGPRINTF(("EXECUTE: t=%p, t->op_type=%d (%s), t->op_words is %s\n", t,
+ t->op_type, T_CMD_NAMES[t->op_type],
+ ((t->op_words == NULL) ? "NULL" : t->op_words[0])));
rv = 0;
a = areanum++;
- wp = (wp2 = t->words) != NULL
- ? eval(wp2, t->type == TCOM ? DOALL : DOALL & ~DOKEY)
+ wp2 = t->op_words;
+ wp = (wp2 != NULL)
+ ? eval(wp2, t->op_type == TCOM ? DOALL : DOALL & ~DOKEY)
: NULL;
- switch (t->type) {
+ switch (t->op_type) {
case TDOT:
DBGPRINTF3(("EXECUTE: TDOT\n"));
outtree_save = outtree;
- newfile(evalstr(t->words[0], DOALL));
+ newfile(evalstr(t->op_words[0], DOALL));
- t->left = dowholefile(TLIST, 0);
+ t->left = dowholefile(TLIST /*, 0*/);
t->right = NULL;
outtree = outtree_save;
if (t->left)
- rv = execute(t->left, pin, pout, 0);
+ rv = execute(t->left, pin, pout, /* no_fork: */ 0);
if (t->right)
- rv = execute(t->right, pin, pout, 0);
+ rv = execute(t->right, pin, pout, /* no_fork: */ 0);
break;
case TPAREN:
- rv = execute(t->left, pin, pout, 0);
+ rv = execute(t->left, pin, pout, /* no_fork: */ 0);
break;
case TCOM:
- rv = forkexec(t, pin, pout, act, wp);
+ rv = forkexec(t, pin, pout, no_fork, wp);
break;
case TPIPE:
break;
pv[0] = remap(pv[0]);
pv[1] = remap(pv[1]);
- (void) execute(t->left, pin, pv, 0);
- rv = execute(t->right, pv, pout, 0);
+ (void) execute(t->left, pin, pv, /* no_fork: */ 0);
+ rv = execute(t->right, pv, pout, /* no_fork: */ 0);
}
break;
case TLIST:
- (void) execute(t->left, pin, pout, 0);
- rv = execute(t->right, pin, pout, 0);
+ (void) execute(t->left, pin, pout, /* no_fork: */ 0);
+ rv = execute(t->right, pin, pout, /* no_fork: */ 0);
break;
case TASYNC:
{
- int hinteractive = interactive;
+ smallint hinteractive = interactive;
DBGPRINTF7(("EXECUTE: TASYNC clause, calling vfork()...\n"));
interactive = 0;
if (pin == NULL) {
close(0);
- open(bb_dev_null, 0);
+ xopen(bb_dev_null, O_RDONLY);
}
- _exit(execute(t->left, pin, pout, FEXEC));
+ _exit(execute(t->left, pin, pout, /* no_fork: */ 1));
}
interactive = hinteractive;
if (i != -1) {
setval(lookup("!"), putn(i));
- if (pin != NULL)
- closepipe(pin);
+ closepipe(pin);
if (interactive) {
prs(putn(i));
prs("\n");
case TOR:
case TAND:
- rv = execute(t->left, pin, pout, 0);
+ rv = execute(t->left, pin, pout, /* no_fork: */ 0);
t1 = t->right;
- if (t1 != NULL && (rv == 0) == (t->type == TAND))
- rv = execute(t1, pin, pout, 0);
+ if (t1 != NULL && (rv == 0) == (t->op_type == TAND))
+ rv = execute(t1, pin, pout, /* no_fork: */ 0);
break;
case TFOR:
i = 0;
} else {
i = -1;
- while (*wp++ != NULL);
+ while (*wp++ != NULL)
+ continue;
}
vp = lookup(t->str);
while (setjmp(bc.brkpt))
brkset(&bc);
for (t1 = t->left; i-- && *wp != NULL;) {
setval(vp, *wp++);
- rv = execute(t1, pin, pout, 0);
+ rv = execute(t1, pin, pout, /* no_fork: */ 0);
}
brklist = brklist->nextlev;
break;
goto broken;
brkset(&bc);
t1 = t->left;
- while ((execute(t1, pin, pout, 0) == 0) == (t->type == TWHILE))
- rv = execute(t->right, pin, pout, 0);
+ while ((execute(t1, pin, pout, /* no_fork: */ 0) == 0) == (t->op_type == TWHILE))
+ rv = execute(t->right, pin, pout, /* no_fork: */ 0);
brklist = brklist->nextlev;
break;
case TIF:
case TELIF:
if (t->right != NULL) {
- rv = !execute(t->left, pin, pout, 0) ?
- execute(t->right->left, pin, pout, 0) :
- execute(t->right->right, pin, pout, 0);
+ rv = !execute(t->left, pin, pout, /* no_fork: */ 0) ?
+ execute(t->right->left, pin, pout, /* no_fork: */ 0) :
+ execute(t->right->right, pin, pout, /* no_fork: */ 0);
}
break;
t1 = findcase(t->left, cp);
if (t1 != NULL) {
DBGPRINTF7(("EXECUTE: TCASE, calling execute(t=%p, t1=%p)...\n", t, t1));
- rv = execute(t1, pin, pout, 0);
+ rv = execute(t1, pin, pout, /* no_fork: */ 0);
DBGPRINTF7(("EXECUTE: TCASE, back from execute(t=%p, t1=%p)...\n", t, t1));
}
break;
if (rv >= 0) {
t1 = t->left;
if (t1) {
- rv = execute(t1, pin, pout, 0);
+ rv = execute(t1, pin, pout, /* no_fork: */ 0);
}
}
break;
};
- broken:
- t->words = wp2;
+ broken:
+// Restoring op_words is most likely not needed now: see comment in forkexec()
+// (also take a look at exec builtin (doexec) - it touches t->op_words)
+ t->op_words = wp2;
isbreak = 0;
freehere(areanum);
freearea(areanum);
return rv;
}
-typedef int (*builtin_func_ptr)(struct op *);
-
-static builtin_func_ptr inbuilt(const char *s) {
+static builtin_func_ptr inbuilt(const char *s)
+{
const struct builtincmd *bp;
- for (bp = builtincmds; bp->name != NULL; bp++)
+ for (bp = builtincmds; bp->name; bp++)
if (strcmp(bp->name, s) == 0)
return bp->builtinfunc;
-
return NULL;
}
-static int forkexec(struct op *t, int *pin, int *pout, int act, char **wp)
+static int forkexec(struct op *t, int *pin, int *pout, int no_fork, char **wp)
{
pid_t newpid;
- int i, rv;
- builtin_func_ptr shcom = NULL;
- int f;
- const char *cp = NULL;
+ int i;
+ builtin_func_ptr bltin = NULL;
+ const char *bltin_name = NULL;
+ const char *cp;
struct ioword **iopp;
int resetsig;
char **owp;
- int forked = 0;
+ int forked;
int *hpin = pin;
int *hpout = pout;
char *hwp;
- int hinteractive;
- int hintr;
+ smallint hinteractive;
+ smallint hintr;
+ smallint hexecflg;
struct brkcon *hbrklist;
- int hexecflg;
#if __GNUC__
/* Avoid longjmp clobbering */
(void) &pin;
(void) &pout;
(void) ℘
- (void) &shcom;
+ (void) &bltin;
(void) &cp;
(void) &resetsig;
(void) &owp;
#endif
- DBGPRINTF(("FORKEXEC: t=%p, pin %p, pout %p, act %d\n", t, pin,
- pout, act));
- DBGPRINTF7(("FORKEXEC: t->words is %s\n",
- ((t->words == NULL) ? "NULL" : t->words[0])));
-
+ DBGPRINTF(("FORKEXEC: t=%p, pin %p, pout %p, no_fork %d\n", t, pin,
+ pout, no_fork));
+ DBGPRINTF7(("FORKEXEC: t->op_words is %s\n",
+ ((t->op_words == NULL) ? "NULL" : t->op_words[0])));
owp = wp;
resetsig = 0;
- rv = -1; /* system-detected error */
- if (t->type == TCOM) {
- while (*wp++ != NULL);
+ if (t->op_type == TCOM) {
+ while (*wp++ != NULL)
+ continue;
cp = *wp;
/* strip all initial assignments */
- /* not correct wrt PATH=yyy command etc */
- if (flag['x']) {
+ /* FIXME: not correct wrt PATH=yyy command etc */
+ if (FLAG['x']) {
DBGPRINTF9(("FORKEXEC: echo'ing, cp=%p, wp=%p, owp=%p\n",
cp, wp, owp));
echo(cp ? wp : owp);
}
- if (cp == NULL && t->ioact == NULL) {
- while ((cp = *owp++) != NULL && assign(cp, COPYV))
- /**/;
- DBGPRINTF(("FORKEXEC: returning setstatus()\n"));
- return setstatus(0);
- }
- if (cp != NULL) {
- shcom = inbuilt(cp);
+ if (cp == NULL) {
+ if (t->ioact == NULL) {
+ while ((cp = *owp++) != NULL && assign(cp, COPYV))
+ continue;
+ DBGPRINTF(("FORKEXEC: returning setstatus(0)\n"));
+ return setstatus(0);
+ }
+ } else { /* cp != NULL */
+ bltin_name = cp;
+ bltin = inbuilt(cp);
}
}
- t->words = wp;
- f = act;
-
- DBGPRINTF(("FORKEXEC: shcom %p, f&FEXEC 0x%x, owp %p\n", shcom,
- f & FEXEC, owp));
-
- if (shcom == NULL && (f & FEXEC) == 0) {
- /* Save values in case the child process alters them */
+ forked = 0;
+ // We were pointing t->op_words to temporary (expanded) arg list:
+ // t->op_words = wp;
+ // and restored it later (in execute()), but "break"
+ // longjmps away (at "Run builtin" below), leaving t->op_words clobbered!
+ // See http://bugs.busybox.net/view.php?id=846.
+ // Now we do not touch t->op_words, but separately pass wp as param list
+ // to builtins
+ DBGPRINTF(("FORKEXEC: bltin %p, no_fork %d, owp %p\n", bltin,
+ no_fork, owp));
+ /* Don't fork if it is a lone builtin (not in pipe)
+ * OR we are told to _not_ fork */
+ if ((!bltin || pin || pout) /* not lone bltin AND */
+ && !no_fork /* not told to avoid fork */
+ ) {
+ /* Save values in case child alters them after vfork */
hpin = pin;
hpout = pout;
hwp = *wp;
hexecflg = execflg;
DBGPRINTF3(("FORKEXEC: calling vfork()...\n"));
-
newpid = vfork();
-
if (newpid == -1) {
DBGPRINTF(("FORKEXEC: ERROR, cannot vfork()!\n"));
return -1;
intr = hintr;
brklist = hbrklist;
execflg = hexecflg;
-/* moved up
- if (i == -1)
- return rv;
-*/
- if (pin != NULL)
- closepipe(pin);
+ closepipe(pin);
return (pout == NULL ? setstatus(waitfor(newpid, 0)) : 0);
}
- /* Must be the child process, pid should be 0 */
- DBGPRINTF(("FORKEXEC: child process, shcom=%p\n", shcom));
-
+ /* Child */
+ DBGPRINTF(("FORKEXEC: child process, bltin=%p (%s)\n", bltin, bltin_name));
if (interactive) {
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
execflg = 0;
}
- if (owp != NULL)
+ if (owp)
while ((cp = *owp++) != NULL && assign(cp, COPYV))
- if (shcom == NULL)
+ if (!bltin)
export(lookup(cp));
-#ifdef COMPIPE
- if ((pin != NULL || pout != NULL) && shcom != NULL && shcom != doexec) {
- err("piping to/from shell builtins not yet done");
- if (forked)
- _exit(-1);
- return -1;
- }
-#endif
-
- if (pin != NULL) {
- dup2(pin[0], 0);
- closepipe(pin);
+ if (pin) { /* NB: close _first_, then move fds! */
+ close(pin[1]);
+ xmove_fd(pin[0], 0);
}
- if (pout != NULL) {
- dup2(pout[1], 1);
- closepipe(pout);
+ if (pout) {
+ close(pout[0]);
+ xmove_fd(pout[1], 1);
}
iopp = t->ioact;
- if (iopp != NULL) {
- if (shcom != NULL && shcom != doexec) {
- prs(cp);
+ if (iopp) {
+ if (bltin && bltin != doexec) {
+ prs(bltin_name);
err(": cannot redirect shell command");
if (forked)
_exit(-1);
return -1;
}
- while (*iopp)
+ while (*iopp) {
if (iosetup(*iopp++, pin != NULL, pout != NULL)) {
+ /* system-detected error */
if (forked)
- _exit(rv);
- return rv;
+ _exit(-1);
+ return -1;
}
+ }
}
- if (shcom) {
- i = setstatus((*shcom) (t));
+ if (bltin) {
+ if (forked || pin || pout) {
+ /* Builtin in pipe: disallowed */
+ /* TODO: allow "exec"? */
+ prs(bltin_name);
+ err(": cannot run builtin as part of pipe");
+ if (forked)
+ _exit(-1);
+ return -1;
+ }
+ /* Run builtin */
+ i = setstatus(bltin(t, wp));
if (forked)
_exit(i);
DBGPRINTF(("FORKEXEC: returning i=%d\n", i));
signal(SIGQUIT, SIG_DFL);
}
- if (t->type == TPAREN)
- _exit(execute(t->left, NOPIPE, NOPIPE, FEXEC));
+ if (t->op_type == TPAREN)
+ _exit(execute(t->left, NOPIPE, NOPIPE, /* no_fork: */ 1));
if (wp[0] == NULL)
_exit(0);
if (!execflg)
trap[0] = NULL;
- DBGPRINTF(("FORKEXEC: calling leave(), pid=%d\n", newpid));
+ DBGPRINTF(("FORKEXEC: calling leave(), pid=%d\n", getpid()));
leave();
/* NOTREACHED */
- _exit(1);
+ return 0;
}
/*
DBGPRINTF(("IOSETUP: iop %p, pipein %i, pipeout %i\n", iop,
pipein, pipeout));
- if (iop->io_unit == IODEFAULT) /* take default */
- iop->io_unit = iop->io_flag & (IOREAD | IOHERE) ? 0 : 1;
+ if (iop->io_fd == IODEFAULT) /* take default */
+ iop->io_fd = iop->io_flag & (IOREAD | IOHERE) ? 0 : 1;
- if (pipein && iop->io_unit == 0)
+ if (pipein && iop->io_fd == 0)
return 0;
- if (pipeout && iop->io_unit == 1)
+ if (pipeout && iop->io_fd == 1)
return 0;
msg = iop->io_flag & (IOREAD | IOHERE) ? "open" : "create";
iop->io_flag = IOCLOSE;
iop->io_flag &= ~(IOREAD | IOWRITE);
}
+
switch (iop->io_flag) {
case IOREAD:
- u = open(cp, 0);
+ u = open(cp, O_RDONLY);
break;
case IOHERE:
break;
case IOWRITE | IOCAT:
- u = open(cp, 1);
+ u = open(cp, O_WRONLY);
if (u >= 0) {
lseek(u, (long) 0, SEEK_END);
break;
}
+ /* fall through to creation if >>file doesn't exist */
+
case IOWRITE:
u = creat(cp, 0666);
break;
case IODUP:
- u = dup2(*cp - '0', iop->io_unit);
+ u = dup2(*cp - '0', iop->io_fd);
break;
case IOCLOSE:
- close(iop->io_unit);
+ close(iop->io_fd);
return 0;
}
+
if (u < 0) {
prs(cp);
prs(": cannot ");
warn(msg);
return 1;
}
- if (u != iop->io_unit) {
- dup2(u, iop->io_unit);
- close(u);
- }
+ xmove_fd(u, iop->io_fd);
return 0;
}
{
int pid, rv;
int s;
- int oheedint = heedint;
+ smallint oheedint = heedint;
heedint = 0;
rv = 0;
} else {
rv = WAITSIG(s);
if (rv != 0) {
- if (rv < NSIGNAL) {
+ if (rv < ARRAY_SIZE(signame)) {
if (signame[rv] != NULL) {
if (pid != lastpid) {
prn(pid);
}
if (WAITCORE(s))
prs(" - core dumped");
- if (rv >= NSIGNAL || signame[rv])
+ if (rv >= ARRAY_SIZE(signame) || signame[rv])
prs("\n");
rv = -1;
} else
*/
static const char *rexecve(char *c, char **v, char **envp)
{
- int i;
const char *sp;
char *tp;
- int eacces = 0, asis = 0;
+ int asis = 0;
char *name = c;
- if (ENABLE_FEATURE_SH_STANDALONE_SHELL) {
- optind = 1;
- if (find_applet_by_name(name)) {
+ if (ENABLE_FEATURE_SH_STANDALONE) {
+ if (find_applet_by_name(name) >= 0) {
/* We have to exec here since we vforked. Running
- * run_applet_by_name() won't work and bad things
+ * run_applet_and_exit() won't work and bad things
* will happen. */
- execve(CONFIG_BUSYBOX_EXEC_PATH, v, envp);
+ execve(bb_busybox_exec_path, v, envp);
}
}
asis = (*sp == '\0');
while (asis || *sp != '\0') {
asis = 0;
- tp = e.linep;
+ tp = global_env.linep;
for (; *sp != '\0'; tp++) {
*tp = *sp++;
if (*tp == ':') {
break;
}
}
- if (tp != e.linep)
+ if (tp != global_env.linep)
*tp++ = '/';
- for (i = 0; (*tp++ = c[i++]) != '\0';);
+ strcpy(tp, c);
+ //for (i = 0; (*tp++ = c[i++]) != '\0';)
+ // continue;
- DBGPRINTF3(("REXECVE: e.linep is %s\n", e.linep));
+ DBGPRINTF3(("REXECVE: global_env.linep is %s\n", global_env.linep));
- execve(e.linep, v, envp);
+ execve(global_env.linep, v, envp);
switch (errno) {
case ENOEXEC:
- *v = e.linep;
- tp = *--v;
- *v = e.linep;
+ *v = global_env.linep;
+ v--;
+ tp = *v;
+ *v = global_env.linep;
execve(DEFAULT_SHELL, v, envp);
*v = tp;
- return "no Shell";
+ return "no shell";
case ENOMEM:
return (char *) bb_msg_memory_exhausted;
case E2BIG:
return "argument list too long";
-
- case EACCES:
- eacces++;
- break;
}
}
return errno == ENOENT ? "not found" : "cannot execute";
errpt = ev;
if (newenv(setjmp(errpt)) == 0) {
- wdlist = 0;
- iolist = 0;
+ wdlist = NULL;
+ iolist = NULL;
pushio(argp, f);
- e.iobase = e.iop;
+ global_env.iobase = global_env.iop;
yynerrs = 0;
failpt = rt;
if (setjmp(failpt) == 0 && yyparse() == 0)
- rv = execute(outtree, NOPIPE, NOPIPE, 0);
+ rv = execute(outtree, NOPIPE, NOPIPE, /* no_fork: */ 0);
quitenv();
} else {
DBGPRINTF(("RUN: error from newenv()!\n"));
* built-in commands: doX
*/
-static int dohelp(struct op *t)
+static int dohelp(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
{
int col;
const struct builtincmd *x;
puts("\nBuilt-in commands:\n"
"-------------------");
- for (col = 0, x = builtincmds; x->builtinfunc != NULL; x++) {
- if (!x->name)
- continue;
- col += printf("%s%s", ((col == 0) ? "\t" : " "), x->name);
+ col = 0;
+ x = builtincmds;
+ while (x->name) {
+ col += printf("%c%s", ((col == 0) ? '\t' : ' '), x->name);
if (col > 60) {
- puts("");
+ bb_putchar('\n');
col = 0;
}
+ x++;
}
-#if ENABLE_FEATURE_SH_STANDALONE_SHELL
+#if ENABLE_FEATURE_SH_STANDALONE
{
- int i;
- const struct BB_applet *applet;
-
- for (i = 0, applet = applets; i < NUM_APPLETS; applet++, i++) {
- if (!applet->name)
- continue;
+ const char *applet = applet_names;
- col += printf("%s%s", ((col == 0) ? "\t" : " "), applet->name);
+ while (*applet) {
+ col += printf("%c%s", ((col == 0) ? '\t' : ' '), applet);
if (col > 60) {
- puts("");
+ bb_putchar('\n');
col = 0;
}
+ applet += strlen(applet) + 1;
}
}
#endif
return EXIT_SUCCESS;
}
-
-
-static int dolabel(struct op *t)
+static int dolabel(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
{
return 0;
}
-static int dochdir(struct op *t)
+static int dochdir(struct op *t ATTRIBUTE_UNUSED, char **args)
{
const char *cp, *er;
- cp = t->words[1];
+ cp = args[1];
if (cp == NULL) {
cp = homedir->value;
- if (cp == NULL)
- er = ": no home directory";
- } else if (chdir(cp) < 0)
+ if (cp != NULL)
+ goto do_cd;
+ er = ": no home directory";
+ } else {
+ do_cd:
+ if (chdir(cp) >= 0)
+ return 0;
er = ": bad directory";
- else
- return 0;
+ }
prs(cp != NULL ? cp : "cd");
err(er);
return 1;
}
-static int doshift(struct op *t)
+static int doshift(struct op *t ATTRIBUTE_UNUSED, char **args)
{
int n;
- n = t->words[1] ? getn(t->words[1]) : 1;
+ n = args[1] ? getn(args[1]) : 1;
if (dolc < n) {
err("nothing to shift");
return 1;
/*
* execute login and newgrp directly
*/
-static int dologin(struct op *t)
+static int dologin(struct op *t ATTRIBUTE_UNUSED, char **args)
{
const char *cp;
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
}
- cp = rexecve(t->words[0], t->words, makenv(0, NULL));
- prs(t->words[0]);
+ cp = rexecve(args[0], args, makenv(0, NULL));
+ prs(args[0]);
prs(": ");
err(cp);
return 1;
}
-static int doumask(struct op *t)
+static int doumask(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- int i, n;
+ int i;
char *cp;
- cp = t->words[1];
+ cp = args[1];
if (cp == NULL) {
i = umask(0);
umask(i);
- for (n = 3 * 4; (n -= 3) >= 0;)
- putc('0' + ((i >> n) & 07), stderr);
- putc('\n', stderr);
+ printf("%04o\n", i);
} else {
-/* huh??? '8','9' are not allowed! */
- for (n = 0; *cp >= '0' && *cp <= '9'; cp++)
- n = n * 8 + (*cp - '0');
- umask(n);
+ i = bb_strtou(cp, NULL, 8);
+ if (errno) {
+ err("umask: bad octal number");
+ return 1;
+ }
+ umask(i);
}
return 0;
}
-static int doexec(struct op *t)
+static int doexec(struct op *t, char **args)
{
- int i;
jmp_buf ex;
xint *ofail;
+ char **sv_words;
t->ioact = NULL;
- for (i = 0; (t->words[i] = t->words[i + 1]) != NULL; i++);
- if (i == 0)
+ if (!args[1])
return 1;
+
execflg = 1;
ofail = failpt;
failpt = ex;
+
+ sv_words = t->op_words;
+ t->op_words = args + 1;
+// TODO: test what will happen with "exec break" -
+// will it leave t->op_words pointing to garbage?
+// (see http://bugs.busybox.net/view.php?id=846)
if (setjmp(failpt) == 0)
- execute(t, NOPIPE, NOPIPE, FEXEC);
+ execute(t, NOPIPE, NOPIPE, /* no_fork: */ 1);
+ t->op_words = sv_words;
+
failpt = ofail;
execflg = 0;
+
return 1;
}
-static int dodot(struct op *t)
+static int dodot(struct op *t ATTRIBUTE_UNUSED, char **args)
{
int i;
const char *sp;
char *cp;
int maltmp;
- DBGPRINTF(("DODOT: enter, t=%p, tleft %p, tright %p, e.linep is %s\n", t, t->left, t->right, ((e.linep == NULL) ? "NULL" : e.linep)));
+ DBGPRINTF(("DODOT: enter, t=%p, tleft %p, tright %p, global_env.linep is %s\n",
+ t, t->left, t->right, ((global_env.linep == NULL) ? "NULL" : global_env.linep)));
- cp = t->words[1];
+ cp = args[1];
if (cp == NULL) {
DBGPRINTF(("DODOT: bad args, ret 0\n"));
return 0;
sp = any('/', cp) ? ":" : path->value;
- DBGPRINTF(("DODOT: sp is %s, e.linep is %s\n",
+ DBGPRINTF(("DODOT: sp is %s, global_env.linep is %s\n",
((sp == NULL) ? "NULL" : sp),
- ((e.linep == NULL) ? "NULL" : e.linep)));
+ ((global_env.linep == NULL) ? "NULL" : global_env.linep)));
while (*sp) {
- tp = e.linep;
+ tp = global_env.linep;
while (*sp && (*tp = *sp++) != ':')
tp++;
- if (tp != e.linep)
+ if (tp != global_env.linep)
*tp++ = '/';
-
- for (i = 0; (*tp++ = cp[i++]) != '\0';);
+ strcpy(tp, cp);
/* Original code */
- i = open(e.linep, 0);
+ i = open(global_env.linep, O_RDONLY);
if (i >= 0) {
exstat = 0;
maltmp = remap(i);
- DBGPRINTF(("DODOT: remap=%d, exstat=%d, e.iofd %d, i %d, e.linep is %s\n", maltmp, exstat, e.iofd, i, e.linep));
+ DBGPRINTF(("DODOT: remap=%d, exstat=%d, global_env.iofd %d, i %d, global_env.linep is %s\n",
+ maltmp, exstat, global_env.iofd, i, global_env.linep));
next(maltmp); /* Basically a PUSHIO */
return -1;
}
-static int dowait(struct op *t)
+static int dowait(struct op *t ATTRIBUTE_UNUSED, char **args)
{
int i;
char *cp;
- cp = t->words[1];
+ cp = args[1];
if (cp != NULL) {
i = getn(cp);
if (i == 0)
return 0;
}
-static int doread(struct op *t)
+static int doread(struct op *t ATTRIBUTE_UNUSED, char **args)
{
char *cp, **wp;
int nb = 0;
int nl = 0;
- if (t->words[1] == NULL) {
+ if (args[1] == NULL) {
err("Usage: read name ...");
return 1;
}
- for (wp = t->words + 1; *wp; wp++) {
- for (cp = e.linep; !nl && cp < elinep - 1; cp++) {
- nb = read(0, cp, sizeof(*cp));
+ for (wp = args + 1; *wp; wp++) {
+ for (cp = global_env.linep; !nl && cp < elinep - 1; cp++) {
+ nb = nonblock_safe_read(0, cp, sizeof(*cp));
if (nb != sizeof(*cp))
break;
nl = (*cp == '\n');
*cp = '\0';
if (nb <= 0)
break;
- setval(lookup(*wp), e.linep);
+ setval(lookup(*wp), global_env.linep);
}
return nb <= 0;
}
-static int doeval(struct op *t)
+static int doeval(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- return RUN(awordlist, t->words + 1, wdchar);
+ return RUN(awordlist, args + 1, wdchar);
}
-static int dotrap(struct op *t)
+static int dotrap(struct op *t ATTRIBUTE_UNUSED, char **args)
{
int n, i;
int resetsig;
- if (t->words[1] == NULL) {
+ if (args[1] == NULL) {
for (i = 0; i <= _NSIG; i++)
if (trap[i]) {
prn(i);
}
return 0;
}
- resetsig = isdigit(*t->words[1]);
- for (i = resetsig ? 1 : 2; t->words[i] != NULL; ++i) {
- n = getsig(t->words[i]);
+ resetsig = isdigit(args[1][0]);
+ for (i = resetsig ? 1 : 2; args[i] != NULL; ++i) {
+ n = getsig(args[i]);
freecell(trap[n]);
trap[n] = 0;
if (!resetsig) {
- if (*t->words[1] != '\0') {
- trap[n] = strsave(t->words[1], 0);
+ if (args[1][0] != '\0') {
+ trap[n] = strsave(args[1], 0);
setsig(n, sig);
} else
setsig(n, SIG_IGN);
return n * m;
}
-static int dobreak(struct op *t)
+static int dobreak(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- return brkcontin(t->words[1], 1);
+ return brkcontin(args[1], 1);
}
-static int docontinue(struct op *t)
+static int docontinue(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- return brkcontin(t->words[1], 0);
+ return brkcontin(args[1], 0);
}
static int brkcontin(char *cp, int val)
err("bad break/continue level");
return 1;
}
- isbreak = val;
+ isbreak = (val != 0);
longjmp(bc->brkpt, 1);
/* NOTREACHED */
}
-static int doexit(struct op *t)
+static int doexit(struct op *t ATTRIBUTE_UNUSED, char **args)
{
char *cp;
execflg = 0;
- cp = t->words[1];
+ cp = args[1];
if (cp != NULL)
setstatus(getn(cp));
return 0;
}
-static int doexport(struct op *t)
+static int doexport(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- rdexp(t->words + 1, export, EXPORT);
+ rdexp(args + 1, export, EXPORT);
return 0;
}
-static int doreadonly(struct op *t)
+static int doreadonly(struct op *t ATTRIBUTE_UNUSED, char **args)
{
- rdexp(t->words + 1, ronly, RONLY);
+ rdexp(args + 1, ronly, RONLY);
return 0;
}
char *cp;
assign(*wp, COPYV);
- for (cp = *wp; *cp != '='; cp++);
+ for (cp = *wp; *cp != '='; cp++)
+ continue;
*cp = '\0';
}
if (checkname(*wp))
err(": bad identifier");
}
-static int doset(struct op *t)
+static int doset(struct op *t ATTRIBUTE_UNUSED, char **args)
{
struct var *vp;
char *cp;
int n;
- cp = t->words[1];
+ cp = args[1];
if (cp == NULL) {
for (vp = vlist; vp; vp = vp->next)
varput(vp->name, 1);
return 0;
}
if (*cp == '-') {
- /* bad: t->words++; */
- for (n = 0; (t->words[n] = t->words[n + 1]) != NULL; n++);
+ args++;
if (*++cp == 0)
- flag['x'] = flag['v'] = 0;
+ FLAG['x'] = FLAG['v'] = 0;
else {
for (; *cp; cp++) {
switch (*cp) {
case 'e':
if (!interactive)
- flag['e']++;
+ FLAG['e']++;
break;
default:
if (*cp >= 'a' && *cp <= 'z')
- flag[(int) *cp]++;
+ FLAG[(int) *cp]++;
break;
}
}
}
setdash();
}
- if (t->words[1]) {
- t->words[0] = dolv[0];
- for (n = 1; t->words[n]; n++)
- setarea((char *) t->words[n], 0);
+ if (args[1]) {
+ args[0] = dolv[0];
+ for (n = 1; args[n]; n++)
+ setarea((char *) args[n], 0);
dolc = n - 1;
- dolv = t->words;
+ dolv = args;
setval(lookup("#"), putn(dolc));
setarea((char *) (dolv - 1), 0);
}
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
* This file contains code for the times builtin.
*/
-static int dotimes(struct op *t)
+static void times_fmt(char *buf, clock_t val, unsigned clk_tck)
+{
+ unsigned min, sec;
+ if (sizeof(val) > sizeof(int))
+ sec = ((unsigned long)val) / clk_tck;
+ else
+ sec = ((unsigned)val) / clk_tck;
+ min = sec / 60;
+#if ENABLE_DESKTOP
+ sprintf(buf, "%um%u.%03us", min, (sec - min * 60),
+ /* msec: */ ((unsigned)(val - (clock_t)sec * clk_tck)) * 1000 / clk_tck
+ );
+#else
+ sprintf(buf, "%um%us", min, (sec - min * 60));
+#endif
+}
+
+static int dotimes(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
{
struct tms buf;
- long clk_tck = sysconf(_SC_CLK_TCK);
+ unsigned clk_tck = sysconf(_SC_CLK_TCK);
+ /* How much do we need for "NmN.NNNs" ? */
+ enum { TIMEBUF_SIZE = sizeof(int)*3 + sizeof(int)*3 + 6 };
+ char u[TIMEBUF_SIZE], s[TIMEBUF_SIZE];
+ char cu[TIMEBUF_SIZE], cs[TIMEBUF_SIZE];
times(&buf);
- printf("%dm%fs %dm%fs\n%dm%fs %dm%fs\n",
- (int) (buf.tms_utime / clk_tck / 60),
- ((double) buf.tms_utime) / clk_tck,
- (int) (buf.tms_stime / clk_tck / 60),
- ((double) buf.tms_stime) / clk_tck,
- (int) (buf.tms_cutime / clk_tck / 60),
- ((double) buf.tms_cutime) / clk_tck,
- (int) (buf.tms_cstime / clk_tck / 60),
- ((double) buf.tms_cstime) / clk_tck);
+
+ times_fmt(u, buf.tms_utime, clk_tck);
+ times_fmt(s, buf.tms_stime, clk_tck);
+ times_fmt(cu, buf.tms_cutime, clk_tck);
+ times_fmt(cs, buf.tms_cstime, clk_tck);
+
+ printf("%s %s\n%s %s\n", u, s, cu, cs);
return 0;
}
if (newenv(setjmp(errpt)) == 0) {
while (*ap && isassign(*ap))
expand(*ap++, &wb, f & ~DOGLOB);
- if (flag['k']) {
+ if (FLAG['k']) {
for (wf = ap; *wf; wf++) {
if (isassign(*wf))
expand(*wf, &wb, f & ~DOGLOB);
}
}
- for (wb = addword((char *) 0, wb); *ap; ap++) {
- if (!flag['k'] || !isassign(*ap))
+ for (wb = addword((char *) NULL, wb); *ap; ap++) {
+ if (!FLAG['k'] || !isassign(*ap))
expand(*ap, &wb, f & ~DOKEY);
}
wb = addword((char *) 0, wb);
errpt = ev;
if (newenv(setjmp(errpt)) == 0) {
PUSHIO(aword, cp, strchar);
- e.iobase = e.iop;
+ global_env.iobase = global_env.iop;
while ((xp = blank(f)) && gflg == 0) {
- e.linep = xp;
+ global_env.linep = xp;
xp = strsave(xp, areanum);
if ((f & DOGLOB) == 0) {
if (f & DOTRIM)
if (wb == NULL || wb->w_nword == 0
|| (cp = wb->w_words[0]) == NULL
) {
-// TODO: I suspect that
+// TODO: I suspect that
// char *evalstr(char *cp, int f) is actually
// const char *evalstr(const char *cp, int f)!
cp = (char*)"";
DBGPRINTF3(("BLANK: enter, f=%d\n", f));
- sp = e.linep;
+ sp = global_env.linep;
scanequals = f & DOKEY;
foundequals = 0;
c = subgetc('"', foundequals);
switch (c) {
case 0:
- if (sp == e.linep)
+ if (sp == global_env.linep)
return 0;
- *e.linep++ = 0;
+ *global_env.linep++ = 0;
return sp;
default:
break;
if (c == '\'' || !any(c, "$`\""))
c |= QUOTE;
- *e.linep++ = c;
+ *global_env.linep++ = c;
}
c = 0;
}
} else if (!isalnum(c) && c != '_')
scanequals = 0;
}
- *e.linep++ = c;
+ *global_env.linep++ = c;
}
- *e.linep++ = 0;
+ *global_env.linep++ = 0;
return sp;
}
if (c == '`') {
if (grave(quoted) == 0)
return 0;
- e.iop->task = XGRAVE;
+ global_env.iop->task = XGRAVE;
goto again;
}
if (c == '$') {
c = dollar(quoted);
if (c == 0) {
- e.iop->task = XDOLL;
+ global_env.iop->task = XDOLL;
goto again;
}
}
DBGPRINTF3(("DOLLAR: enter, quoted=%d\n", quoted));
c = readc();
- s = e.linep;
+ s = global_env.linep;
if (c != '{') {
- *e.linep++ = c;
+ *global_env.linep++ = c;
if (isalpha(c) || c == '_') {
while ((c = readc()) != 0 && (isalnum(c) || c == '_'))
- if (e.linep < elinep)
- *e.linep++ = c;
+ if (global_env.linep < elinep)
+ *global_env.linep++ = c;
unget(c);
}
c = 0;
} else {
- oiop = e.iop;
- otask = e.iop->task;
+ oiop = global_env.iop;
+ otask = global_env.iop->task;
- e.iop->task = XOTHER;
+ global_env.iop->task = XOTHER;
while ((c = subgetc('"', 0)) != 0 && c != '}' && c != '\n')
- if (e.linep < elinep)
- *e.linep++ = c;
- if (oiop == e.iop)
- e.iop->task = otask;
+ if (global_env.linep < elinep)
+ *global_env.linep++ = c;
+ if (oiop == global_env.iop)
+ global_env.iop->task = otask;
if (c != '}') {
err("unclosed ${");
- gflg++;
+ gflg = 1;
return c;
}
}
- if (e.linep >= elinep) {
+ if (global_env.linep >= elinep) {
err("string in ${} too long");
- gflg++;
- e.linep -= 10;
+ gflg = 1;
+ global_env.linep -= 10;
}
- *e.linep = 0;
+ *global_env.linep = 0;
if (*s)
for (cp = s + 1; *cp; cp++)
if (any(*cp, "=-+?")) {
if (dolc > 1) {
/* currently this does not distinguish $* and $@ */
/* should check dollar */
- e.linep = s;
+ global_env.linep = s;
PUSHIO(awordlist, dolv + 1, dolchar);
return 0;
} else { /* trap the nasty ${=} */
case '=':
if (isdigit(*s)) {
err("cannot use ${...=...} with $n");
- gflg++;
+ gflg = 1;
break;
}
setval(vp, cp);
err(s);
} else
err(cp);
- gflg++;
+ gflg = 1;
break;
}
} else if (c == '+')
dolp = strsave(cp, areanum);
- if (flag['u'] && dolp == null) {
+ if (FLAG['u'] && dolp == null) {
prs("unset variable: ");
err(s);
- gflg++;
+ gflg = 1;
}
- e.linep = s;
+ global_env.linep = s;
PUSHIO(aword, dolp, quoted ? qstrchar : strchar);
return 0;
}
static int grave(int quoted)
{
+ /* moved to G: static char child_cmd[LINELIM]; */
+
const char *cp;
int i;
int j;
int pf[2];
- static char child_cmd[LINELIM];
const char *src;
char *dest;
int count;
(void) &cp;
#endif
- for (cp = e.iop->argp->aword; *cp != '`'; cp++) {
+ for (cp = global_env.iop->argp->aword; *cp != '`'; cp++) {
if (*cp == 0) {
err("no closing `");
return 0;
}
/* string copy with dollar expansion */
- src = e.iop->argp->aword;
+ src = global_env.iop->argp->aword;
dest = child_cmd;
count = 0;
ignore = 0;
ignore_once = 1;
if (*src == '$' && !ignore && !ignore_once) {
struct var *vp;
+ /* moved to G to reduce stack usage
char var_name[LINELIM];
char alt_value[LINELIM];
+ */
+#define var_name (G.grave__var_name)
+#define alt_value (G.grave__alt_value)
int var_index = 0;
int alt_index = 0;
char operator = 0;
count++;
}
}
+#undef var_name
+#undef alt_value
} else {
*dest++ = *src++;
count++;
if (openpipe(pf) < 0)
return 0;
- while ((i = vfork()) == -1 && errno == EAGAIN);
+ while ((i = vfork()) == -1 && errno == EAGAIN)
+ continue;
DBGPRINTF3(("GRAVE: i is %p\n", io));
return 0;
}
if (i != 0) {
- waitpid(i, NULL, 0);
- e.iop->argp->aword = ++cp;
+ waitpid(i, NULL, 0); // safe_waitpid?
+ global_env.iop->argp->aword = ++cp;
close(pf[1]);
PUSHIO(afile, remap(pf[0]),
(int (*)(struct ioarg *)) ((quoted) ? qgravechar : gravechar));
if (ourtrap[j] && signal(j, SIG_IGN) != SIG_IGN)
signal(j, SIG_DFL);
- dup2(pf[1], 1);
- closepipe(pf);
+ /* Testcase where below checks are needed:
+ * close stdout & run this script:
+ * files=`ls`
+ * echo "$files" >zz
+ */
+ xmove_fd(pf[1], 1);
+ if (pf[0] != 1)
+ close(pf[0]);
argument_list[0] = (char *) DEFAULT_SHELL;
argument_list[1] = (char *) "-c";
#define NDENT ((BLKSIZ+sizeof(struct dirent)-1)/sizeof(struct dirent))
static struct wdblock *cl, *nl;
-static char spcl[] = "[?*";
+static const char spcl[] ALIGN1= "[?*";
static struct wdblock *glob(char *cp, struct wdblock *wb)
{
DELETE(cl->w_words[i]);
DELETE(cl);
}
- for (i = 0; i < cl->w_nword; i++)
- unquote(cl->w_words[i]);
- glob0((char *) cl->w_words, cl->w_nword, sizeof(char *), xstrcmp);
if (cl->w_nword) {
+ for (i = 0; i < cl->w_nword; i++)
+ unquote(cl->w_words[i]);
+ qsort_string_vector(cl->w_words, cl->w_nword);
for (i = 0; i < cl->w_nword; i++)
wb = addword(cl->w_words[i], wb);
DELETE(cl);
for (np = we; np != pp; pp--)
if (pp[-1] == '/')
break;
- for (dp = cp = space((int) (pp - np) + 3); np < pp;)
+ dp = cp = get_space((int) (pp - np) + 3);
+ while (np < pp)
*cp++ = *np++;
*cp++ = '.';
*cp = '\0';
- for (gp = cp = space(strlen(pp) + 1); *np && *np != '/';)
+ gp = cp = get_space(strlen(pp) + 1);
+ while (*np && *np != '/')
*cp++ = *np++;
*cp = '\0';
dirp = opendir(dp);
char *p;
char *op, *xp;
- p = op = space((int)(end1 - start1) + strlen(middle) + strlen(end) + 2);
- for (xp = start1; xp != end1;)
+ p = op = get_space((int)(end1 - start1) + strlen(middle) + strlen(end) + 2);
+ xp = start1;
+ while (xp != end1)
*op++ = *xp++;
- for (xp = middle; (*op++ = *xp++) != '\0';);
- op--;
- for (xp = end; (*op++ = *xp++) != '\0';);
+ xp = middle;
+ while (*xp != '\0')
+ *op++ = *xp++;
+ strcpy(op, end);
return p;
}
return 0;
}
-static int xstrcmp(char *p1, char *p2)
-{
- return strcmp(*(char **) p1, *(char **) p2);
-}
-
/* -------- word.c -------- */
{
struct wdblock *wb;
- wb = (struct wdblock *) space(sizeof(*wb) + nw * sizeof(char *));
+ wb = get_space(sizeof(*wb) + nw * sizeof(char *));
wb->w_bsize = nw;
wb->w_nword = 0;
return wb;
return wb;
}
-static
-char **getwords(struct wdblock *wb)
+static char **getwords(struct wdblock *wb)
{
char **wd;
int nb;
DELETE(wb);
return NULL;
}
- wd = (char **) space(nb = sizeof(*wd) * wb->w_nword);
- memcpy((char *) wd, (char *) wb->w_words, nb);
- DELETE(wb); /* perhaps should done by caller */
+ nb = sizeof(*wd) * wb->w_nword;
+ wd = get_space(nb);
+ memcpy(wd, wb->w_words, nb);
+ DELETE(wb); /* perhaps should done by caller */
return wd;
}
-static int (*func) (char *, char *);
-static int globv;
-
-static void glob3(char *i, char *j, char *k)
-{
- char *index1, *index2, *index3;
- int c;
- int m;
-
- m = globv;
- index1 = i;
- index2 = j;
- index3 = k;
- do {
- c = *index1;
- *index1++ = *index3;
- *index3++ = *index2;
- *index2++ = c;
- } while (--m);
-}
-
-static void glob2(char *i, char *j)
-{
- char *index1, *index2, c;
- int m;
-
- m = globv;
- index1 = i;
- index2 = j;
- do {
- c = *index1;
- *index1++ = *index2;
- *index2++ = c;
- } while (--m);
-}
-
-static void glob1(char *base, char *lim)
-{
- char *i, *j;
- int v2;
- char *lptr, *hptr;
- int c;
- unsigned n;
-
- v2 = globv;
-
- top:
- n = (int) (lim - base);
- if (n <= v2)
- return;
- n = v2 * (n / (2 * v2));
- hptr = lptr = base + n;
- i = base;
- j = lim - v2;
- for (;;) {
- if (i < lptr) {
- c = (*func) (i, lptr);
- if (c == 0) {
- lptr -= v2;
- glob2(i, lptr);
- continue;
- }
- if (c < 0) {
- i += v2;
- continue;
- }
- }
-
- begin:
- if (j > hptr) {
- c = (*func) (hptr, j);
- if (c == 0) {
- hptr += v2;
- glob2(hptr, j);
- goto begin;
- }
- if (c > 0) {
- if (i == lptr) {
- hptr += v2;
- glob3(i, hptr, j);
- i = (lptr += v2);
- goto begin;
- }
- glob2(i, j);
- j -= v2;
- i += v2;
- continue;
- }
- j -= v2;
- goto begin;
- }
-
-
- if (i == lptr) {
- if (lptr - base >= lim - hptr) {
- glob1(hptr + v2, lim);
- lim = lptr;
- } else {
- glob1(base, lptr);
- base = hptr + v2;
- }
- goto top;
- }
-
- lptr -= v2;
- glob3(j, lptr, i);
- j = (hptr -= v2);
- }
-}
-
-static void glob0(char *a0, unsigned a1, int a2, int (*a3) (char *, char *))
-{
- func = a3;
- globv = a2;
- glob1(a0, a0 + a1 * a2);
-}
-
/* -------- io.c -------- */
{
int c;
- if (e.linep > elinep) {
- while ((c = readc()) != '\n' && c);
+ if (global_env.linep > elinep) {
+ while ((c = readc()) != '\n' && c)
+ continue;
err("input line too long");
- gflg++;
+ gflg = 1;
return c;
}
c = readc();
- if ((ec != '\'') && (ec != '`') && (e.iop->task != XGRAVE)) {
+ if ((ec != '\'') && (ec != '`') && (global_env.iop->task != XGRAVE)) {
if (c == '\\') {
c = readc();
if (c == '\n' && ec != '\"')
static void unget(int c)
{
- if (e.iop >= e.iobase)
- e.iop->peekc = c;
+ if (global_env.iop >= global_env.iobase)
+ global_env.iop->peekc = c;
}
static int eofc(void)
{
- return e.iop < e.iobase || (e.iop->peekc == 0 && e.iop->prev == 0);
+ return global_env.iop < global_env.iobase || (global_env.iop->peekc == 0 && global_env.iop->prev == 0);
}
static int readc(void)
{
int c;
- RCPRINTF(("READC: e.iop %p, e.iobase %p\n", e.iop, e.iobase));
+ RCPRINTF(("READC: global_env.iop %p, global_env.iobase %p\n", global_env.iop, global_env.iobase));
- for (; e.iop >= e.iobase; e.iop--) {
- RCPRINTF(("READC: e.iop %p, peekc 0x%x\n", e.iop, e.iop->peekc));
- c = e.iop->peekc;
+ for (; global_env.iop >= global_env.iobase; global_env.iop--) {
+ RCPRINTF(("READC: global_env.iop %p, peekc 0x%x\n", global_env.iop, global_env.iop->peekc));
+ c = global_env.iop->peekc;
if (c != '\0') {
- e.iop->peekc = 0;
+ global_env.iop->peekc = 0;
return c;
}
- if (e.iop->prev != 0) {
- c = (*e.iop->iofn)(e.iop->argp, e.iop);
+ if (global_env.iop->prev != 0) {
+ c = (*global_env.iop->iofn)(global_env.iop->argp, global_env.iop);
if (c != '\0') {
if (c == -1) {
- e.iop++;
+ global_env.iop++;
continue;
}
- if (e.iop == iostack)
+ if (global_env.iop == iostack)
ioecho(c);
- e.iop->prev = c;
- return e.iop->prev;
+ global_env.iop->prev = c;
+ return c;
}
- if (e.iop->task == XIO && e.iop->prev != '\n') {
- e.iop->prev = 0;
- if (e.iop == iostack)
+ if (global_env.iop->task == XIO && global_env.iop->prev != '\n') {
+ global_env.iop->prev = 0;
+ if (global_env.iop == iostack)
ioecho('\n');
return '\n';
}
}
- if (e.iop->task == XIO) {
+ if (global_env.iop->task == XIO) {
if (multiline) {
- e.iop->prev = 0;
- return e.iop->prev;
+ global_env.iop->prev = 0;
+ return 0;
}
- if (interactive && e.iop == iostack + 1) {
+ if (interactive && global_env.iop == iostack + 1) {
#if ENABLE_FEATURE_EDITING
current_prompt = prompt->value;
#else
}
} /* FOR */
- if (e.iop >= iostack) {
- RCPRINTF(("READC: return 0, e.iop %p\n", e.iop));
+ if (global_env.iop >= iostack) {
+ RCPRINTF(("READC: return 0, global_env.iop %p\n", global_env.iop));
return 0;
}
DBGPRINTF(("READC: leave()...\n"));
leave();
-
/* NOTREACHED */
return 0;
}
static void ioecho(char c)
{
- if (flag['v'])
+ if (FLAG['v'])
write(2, &c, sizeof c);
}
-
static void pushio(struct ioarg *argp, int (*fn) (struct ioarg *))
{
- DBGPRINTF(("PUSHIO: argp %p, argp->afid 0x%x, e.iop %p\n", argp,
- argp->afid, e.iop));
+ DBGPRINTF(("PUSHIO: argp %p, argp->afid 0x%x, global_env.iop %p\n", argp,
+ argp->afid, global_env.iop));
/* Set env ptr for io source to next array spot and check for array overflow */
- if (++e.iop >= &iostack[NPUSH]) {
- e.iop--;
+ if (++global_env.iop >= &iostack[NPUSH]) {
+ global_env.iop--;
err("Shell input nested too deeply");
- gflg++;
+ gflg = 1;
return;
}
/* We did not overflow the NPUSH array spots so setup data structs */
- e.iop->iofn = (int (*)(struct ioarg *, struct io *)) fn; /* Store data source func ptr */
+ global_env.iop->iofn = (int (*)(struct ioarg *, struct io *)) fn; /* Store data source func ptr */
if (argp->afid != AFID_NOBUF)
- e.iop->argp = argp;
+ global_env.iop->argp = argp;
else {
- e.iop->argp = ioargstack + (e.iop - iostack); /* MAL - index into stack */
- *e.iop->argp = *argp; /* copy data from temp area into stack spot */
+ global_env.iop->argp = ioargstack + (global_env.iop - iostack); /* MAL - index into stack */
+ *global_env.iop->argp = *argp; /* copy data from temp area into stack spot */
/* MAL - mainbuf is for 1st data source (command line?) and all nested use a single shared buffer? */
- if (e.iop == &iostack[0])
- e.iop->argp->afbuf = &mainbuf;
+ if (global_env.iop == &iostack[0])
+ global_env.iop->argp->afbuf = &mainbuf;
else
- e.iop->argp->afbuf = &sharedbuf;
+ global_env.iop->argp->afbuf = &sharedbuf;
/* MAL - if not a termimal AND (commandline OR readable file) then give it a buffer id? */
/* This line appears to be active when running scripts from command line */
- if ((isatty(e.iop->argp->afile) == 0)
- && (e.iop == &iostack[0]
- || lseek(e.iop->argp->afile, 0L, SEEK_CUR) != -1)) {
+ if ((isatty(global_env.iop->argp->afile) == 0)
+ && (global_env.iop == &iostack[0]
+ || lseek(global_env.iop->argp->afile, 0L, SEEK_CUR) != -1)) {
if (++bufid == AFID_NOBUF) /* counter rollover check, AFID_NOBUF = 11111111 */
bufid = AFID_ID; /* AFID_ID = 0 */
- e.iop->argp->afid = bufid; /* assign buffer id */
+ global_env.iop->argp->afid = bufid; /* assign buffer id */
}
- DBGPRINTF(("PUSHIO: iostack %p, e.iop %p, afbuf %p\n",
- iostack, e.iop, e.iop->argp->afbuf));
- DBGPRINTF(("PUSHIO: mbuf %p, sbuf %p, bid %d, e.iop %p\n",
- &mainbuf, &sharedbuf, bufid, e.iop));
+ DBGPRINTF(("PUSHIO: iostack %p, global_env.iop %p, afbuf %p\n",
+ iostack, global_env.iop, global_env.iop->argp->afbuf));
+ DBGPRINTF(("PUSHIO: mbuf %p, sbuf %p, bid %d, global_env.iop %p\n",
+ &mainbuf, &sharedbuf, bufid, global_env.iop));
}
- e.iop->prev = ~'\n';
- e.iop->peekc = 0;
- e.iop->xchar = 0;
- e.iop->nlcount = 0;
+ global_env.iop->prev = ~'\n';
+ global_env.iop->peekc = 0;
+ global_env.iop->xchar = 0;
+ global_env.iop->nlcount = 0;
if (fn == filechar || fn == linechar)
- e.iop->task = XIO;
+ global_env.iop->task = XIO;
else if (fn == (int (*)(struct ioarg *)) gravechar
- || fn == (int (*)(struct ioarg *)) qgravechar)
- e.iop->task = XGRAVE;
+ || fn == (int (*)(struct ioarg *)) qgravechar)
+ global_env.iop->task = XGRAVE;
else
- e.iop->task = XOTHER;
+ global_env.iop->task = XOTHER;
}
static struct io *setbase(struct io *ip)
{
struct io *xp;
- xp = e.iobase;
- e.iobase = ip;
+ xp = global_env.iobase;
+ global_env.iobase = ip;
return xp;
}
*/
/*
- * Produce the characters of a string, then a newline, then EOF.
+ * Produce the characters of a string, then a newline, then NUL.
*/
static int nlchar(struct ioarg *ap)
{
- int c;
+ char c;
if (ap->aword == NULL)
- return 0;
+ return '\0';
c = *ap->aword++;
- if (c == 0) {
+ if (c == '\0') {
ap->aword = NULL;
return '\n';
}
if (i)
lseek(ap->afile, ap->afpos, SEEK_SET);
- i = safe_read(ap->afile, bp->buf, sizeof(bp->buf));
+ i = nonblock_safe_read(ap->afile, bp->buf, sizeof(bp->buf));
if (i <= 0) {
closef(ap->afile);
return 0;
}
#if ENABLE_FEATURE_EDITING
if (interactive && isatty(ap->afile)) {
- static char mycommand[BUFSIZ];
+ /* moved to G: static char filechar_cmdbuf[BUFSIZ]; */
static int position = 0, size = 0;
while (size == 0 || position >= size) {
- read_line_input(current_prompt, mycommand, BUFSIZ, line_input_state);
- size = strlen(mycommand);
+ size = read_line_input(current_prompt, filechar_cmdbuf, BUFSIZ, line_input_state);
+ if (size < 0) /* Error/EOF */
+ exit(0);
position = 0;
+ /* if Ctrl-C, size == 0 and loop will repeat */
}
- c = mycommand[position];
+ c = filechar_cmdbuf[position];
position++;
return c;
}
#endif
- i = safe_read(ap->afile, &c, sizeof(c));
+ i = nonblock_safe_read(ap->afile, &c, sizeof(c));
return i == sizeof(c) ? (c & 0x7f) : (closef(ap->afile), 0);
}
{
char c;
- if (read(ap->afile, &c, sizeof(c)) != sizeof(c)) {
+ if (nonblock_safe_read(ap->afile, &c, sizeof(c)) != sizeof(c)) {
close(ap->afile);
c = '\0';
}
int map[NOFILE];
int newfd;
- DBGPRINTF(("REMAP: fd=%d, e.iofd=%d\n", fd, e.iofd));
+ DBGPRINTF(("REMAP: fd=%d, global_env.iofd=%d\n", fd, global_env.iofd));
- if (fd < e.iofd) {
+ if (fd < global_env.iofd) {
for (i = 0; i < NOFILE; i++)
map[i] = 0;
map[fd] = 1;
newfd = dup(fd);
fd = newfd;
- } while (fd >= 0 && fd < e.iofd);
+ } while (fd >= 0 && fd < global_env.iofd);
for (i = 0; i < NOFILE; i++)
if (map[i])
static void closepipe(int *pv)
{
if (pv != NULL) {
- close(*pv++);
- close(*pv);
+ close(pv[0]);
+ close(pv[1]);
}
}
DBGPRINTF7(("MARKHERE: enter, s=%p\n", s));
- h = (struct here *) space(sizeof(struct here));
+ h = get_space(sizeof(struct here));
if (h == NULL)
return;
*s &= ~QUOTE;
}
}
- h->h_dosub = iop->io_flag & IOXHERE;
+ h->h_dosub = ((iop->io_flag & IOXHERE) ? '\0' : '\'');
}
static void gethere(void)
/* Scan here files first leaving inhere list in place */
for (hp = h = inhere; h != NULL; hp = h, h = h->h_next)
- readhere(&h->h_iop->io_name, h->h_tag, h->h_dosub ? 0 : '\'');
+ readhere(&h->h_iop->io_name, h->h_tag, h->h_dosub /* NUL or ' */);
/* Make inhere list active - keep list intact for scraphere */
if (hp != NULL) {
if (newenv(setjmp(errpt)) != 0)
unlink(tname);
else {
- pushio(e.iop->argp, (int (*)(struct ioarg *)) e.iop->iofn);
- e.iobase = e.iop;
+ pushio(global_env.iop->argp, (int (*)(struct ioarg *)) global_env.iop->iofn);
+ global_env.iobase = global_env.iop;
for (;;) {
- if (interactive && e.iop <= iostack) {
+ if (interactive && global_env.iop <= iostack) {
#if ENABLE_FEATURE_EDITING
current_prompt = cprompt->value;
#else
DBGPRINTF7(("HEREIN: hname is %s, xdoll=%d\n", hname, xdoll));
- hf = open(hname, 0);
+ hf = open(hname, O_RDONLY);
if (hf < 0)
return -1;
errpt = ev;
if (newenv(setjmp(errpt)) == 0) {
PUSHIO(afile, hf, herechar);
- setbase(e.iop);
+ setbase(global_env.iop);
while ((c = subgetc(0, 0)) != 0) {
c &= ~QUOTE;
write(tf, &c, sizeof c);
} else
unlink(tname);
close(tf);
- tf = open(tname, 0);
+ tf = open(tname, O_RDONLY);
unlink(tname);
return tf;
}
DBGPRINTF6(("FREEHERE: enter, area=%d\n", area));
hl = NULL;
- for (h = acthere; h != NULL; h = h->h_next)
+ for (h = acthere; h != NULL; h = h->h_next) {
if (getarea((char *) h) >= area) {
if (h->h_iop->io_name != NULL)
unlink(h->h_iop->io_name);
acthere = h->h_next;
else
hl->h_next = h->h_next;
- } else
+ } else {
hl = h;
+ }
+ }
}
* shell
*/
-int msh_main(int argc, char **argv);
+int msh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int msh_main(int argc, char **argv)
{
int f;
char *name, **ap;
int (*iof) (struct ioarg *);
+ INIT_G();
+
+ sharedbuf.id = AFID_NOBUF;
+ mainbuf.id = AFID_NOBUF;
+ elinep = line + sizeof(line) - 5;
+
#if ENABLE_FEATURE_EDITING
line_input_state = new_line_input_t(FOR_SHELL);
#endif
path = lookup("PATH");
if (path->value == null) {
+ /* Can be merged with same string elsewhere in bbox */
if (geteuid() == 0)
- setval(path, "/sbin:/bin:/usr/sbin:/usr/bin");
+ setval(path, bb_default_root_path);
else
- setval(path, "/bin:/usr/bin");
+ setval(path, bb_default_path);
}
export(path);
break;
case 'i':
- interactive++;
+ interactive = 1;
default:
if (*s >= 'a' && *s <= 'z')
- flag[(int) *s]++;
+ FLAG[(int) *s]++;
}
} else {
argv--;
setdash();
/* This won't be true if PUSHIO has been called, say from newfile() above */
- if (e.iop < iostack) {
+ if (global_env.iop < iostack) {
PUSHIO(afile, 0, iof);
if (isatty(0) && isatty(1) && !cflag) {
- interactive++;
+ interactive = 1;
#if !ENABLE_FEATURE_SH_EXTRA_QUIET
#ifdef MSHDEBUG
- printf("\n\n%s Built-in shell (msh with debug)\n", BB_BANNER);
+ printf("\n\n%s built-in shell (msh with debug)\n", bb_banner);
#else
- printf("\n\n%s Built-in shell (msh)\n", BB_BANNER);
+ printf("\n\n%s built-in shell (msh)\n", bb_banner);
#endif
printf("Enter 'help' for a list of built-in commands.\n\n");
#endif
signal(SIGQUIT, qflag);
if (name && name[0] == '-') {
- interactive++;
- f = open(".profile", 0);
+ interactive = 1;
+ f = open(".profile", O_RDONLY);
if (f >= 0)
next(remap(f));
- f = open("/etc/profile", 0);
+ f = open("/etc/profile", O_RDONLY);
if (f >= 0)
next(remap(f));
}
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, onintr);
+
+/* Handle "msh SCRIPT VAR=val params..." */
+/* Disabled: bash does not do it! */
+#if 0
+ argv++;
+ /* skip leading args of the form VAR=val */
+ while (*argv && assign(*argv, !COPYV)) {
+ argc--;
+ argv++;
+ }
+ argv--;
+#endif
dolv = argv;
dolc = argc;
dolv[0] = name;
- if (dolc > 1) {
- for (ap = ++argv; --argc > 0;) {
- *ap = *argv++;
- if (assign(*ap, !COPYV)) {
- dolc--; /* keyword */
- } else {
- ap++;
- }
- }
- }
+
setval(lookup("#"), putn((--dolc < 0) ? (dolc = 0) : dolc));
- DBGPRINTF(("MSH_MAIN: begin FOR loop, interactive %d, e.iop %p, iostack %p\n", interactive, e.iop, iostack));
+ DBGPRINTF(("MSH_MAIN: begin FOR loop, interactive %d, global_env.iop %p, iostack %p\n", interactive, global_env.iop, iostack));
for (;;) {
- if (interactive && e.iop <= iostack) {
+ if (interactive && global_env.iop <= iostack) {
#if ENABLE_FEATURE_EDITING
current_prompt = prompt->value;
#else
projects / oweals / busybox.git / blobdiff