diff options
| -rw-r--r-- | shell/ash.c | 663 |
1 files changed, 299 insertions, 364 deletions
diff --git a/shell/ash.c b/shell/ash.c index 9815321..c1b5841 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -203,7 +203,8 @@ static volatile sig_atomic_t pendingsigs; #define RESTOREINT(v) \ ({ \ xbarrier(); \ - if ((suppressint = (v)) == 0 && intpending) onint(); \ + suppressint = (v); \ + if (suppressint == 0 && intpending) onint(); \ 0; \ }) #define EXSIGON() \ @@ -1570,7 +1571,8 @@ static int varcmp(const char *, const char *); static struct var **hashvar(const char *); -static int varequal(const char *a, const char *b) { +static int varequal(const char *a, const char *b) +{ return !varcmp(a, b); } @@ -1837,7 +1839,8 @@ static char *stnputs(const char *, size_t, char *); static char *stputs(const char *, char *); -static char *_STPUTC(int c, char *p) { +static char *_STPUTC(int c, char *p) +{ if (p == sstrend) p = growstackstr(); *p++ = c; @@ -2049,7 +2052,6 @@ static int is_safe_applet(char *name) * This routine is called when an error or an interrupt occurs in an * interactive shell and control is returned to the main command loop. */ - static void reset(void) { @@ -2176,8 +2178,10 @@ aliascmd(int argc, char **argv) return 0; } while ((n = *++argv) != NULL) { - if ((v = strchr(n+1, '=')) == NULL) { /* n+1: funny ksh stuff */ - if ((ap = *__lookupalias(n)) == NULL) { + v = strchr(n+1, '='); + if (v == NULL) { /* n+1: funny ksh stuff */ + ap = *__lookupalias(n); + if (ap == NULL) { fprintf(stderr, "%s: %s not found\n", "alias", n); ret = 1; } else @@ -2317,7 +2321,7 @@ cdcmd(int argc, char **argv) goto step7; if (*dest == '.') { c = dest[1]; -dotdot: + dotdot: switch (c) { case '\0': case '/': @@ -2330,9 +2334,10 @@ dotdot: } if (!*dest) dest = "."; - if (!(path = bltinlookup("CDPATH"))) { -step6: -step7: + path = bltinlookup("CDPATH"); + if (!path) { + step6: + step7: p = dest; goto docd; } @@ -2342,7 +2347,7 @@ step7: if (stat(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) { if (c && c != ':') flags |= CD_PRINT; -docd: + docd: if (!docd(p, flags)) goto out; break; @@ -2350,7 +2355,7 @@ docd: } while (path); sh_error("can't cd to %s", dest); /* NOTREACHED */ -out: + out: if (flags & CD_PRINT) out1fmt(snlfmt, curdir); return 0; @@ -2361,7 +2366,6 @@ out: * Update curdir (the name of the current directory) in response to a * cd command. */ - static const char * updatepwd(const char *dir) { char *new; @@ -2418,11 +2422,11 @@ static const char * updatepwd(const char *dir) return stackblock(); } + /* * Actually do the chdir. We also call hashcd to let the routines in exec.c * know that the current directory has changed. */ - static int docd(const char *dest, int flags) { @@ -2442,7 +2446,7 @@ docd(const char *dest, int flags) goto out; setpwd(dir, 1); hashcd(); -out: + out: INTON; return err; } @@ -2522,7 +2526,6 @@ static void exverror(int, const char *, va_list) ATTRIBUTE_NORETURN; * just do a longjmp to the exception handler. The type of exception is * stored in the global variable "exception". */ - static void exraise(int e) { @@ -2544,7 +2547,6 @@ exraise(int e) * are held using the INTOFF macro. (The test for iflag is just * defensive programming.) */ - static void onint(void) { int i; @@ -2626,10 +2628,10 @@ exerror(int cond, const char *msg, ...) va_end(ap); } + /* * error/warning routines for external builtins */ - static void sh_warnx(const char *fmt, ...) { @@ -2646,7 +2648,6 @@ sh_warnx(const char *fmt, ...) * pointer to a static buffer that will be overwritten on the next call. * Action describes the operation that got the error. */ - static const char * errmsg(int e, const char *em) { @@ -2694,7 +2695,6 @@ static const struct builtincmd bltin = { /* * The eval command. */ - static int evalcmd(int argc, char **argv) { @@ -2709,7 +2709,8 @@ evalcmd(int argc, char **argv) ap = argv + 2; for (;;) { concat = stputs(p, concat); - if ((p = *ap++) == NULL) + p = *ap++; + if (p == NULL) break; STPUTC(' ', concat); } @@ -2726,7 +2727,6 @@ evalcmd(int argc, char **argv) /* * Execute a command or commands contained in a string. */ - static int evalstring(char *s, int mask) { @@ -2757,7 +2757,6 @@ evalstring(char *s, int mask) * Evaluate a parse tree. The value is left in the global variable * exitstatus. */ - static void evaltree(union node *n, int flags) { @@ -2793,7 +2792,7 @@ evaltree(union node *n, int flags) goto setstatus; case NCMD: evalfn = evalcommand; -checkexit: + checkexit: if (eflag && !(flags & EV_TESTED)) checkexit = ~0; goto calleval; @@ -2832,9 +2831,9 @@ checkexit: break; if (!evalskip) { n = n->nbinary.ch2; -evaln: + evaln: evalfn = evaltree; -calleval: + calleval: evalfn(n, flags); break; } @@ -2853,20 +2852,20 @@ calleval: goto success; case NDEFUN: defun(n->narg.text, n->narg.next); -success: + success: status = 0; -setstatus: + setstatus: exitstatus = status; break; } -out: + out: if ((checkexit & exitstatus)) evalskip |= SKIPEVAL; else if (pendingsigs && dotrap()) goto exexit; if (flags & EV_EXIT) { -exexit: + exexit: exraise(EXEXIT); } } @@ -2891,7 +2890,8 @@ evalloop(union node *n, int flags) evaltree(n->nbinary.ch1, EV_TESTED); if (evalskip) { -skipping: if (evalskip == SKIPCONT && --skipcount <= 0) { + skipping: + if (evalskip == SKIPCONT && --skipcount <= 0) { evalskip = 0; continue; } @@ -2949,12 +2949,11 @@ evalfor(union node *n, int flags) } } loopnest--; -out: + out: popstackmark(&smark); } - static void evalcase(union node *n, int flags) { @@ -2977,7 +2976,7 @@ evalcase(union node *n, int flags) } } } -out: + out: popstackmark(&smark); } @@ -2985,7 +2984,6 @@ out: /* * Kick off a subshell to evaluate a tree. */ - static void evalsubshell(union node *n, int flags) { @@ -3019,7 +3017,6 @@ nofork: /* * Compute the names of the files in a redirection list. */ - static void expredir(union node *n) { @@ -3059,7 +3056,6 @@ expredir(union node *n) * of the shell, which make the last process in a pipeline the parent * of all the rest.) */ - static void evalpipe(union node *n, int flags) { @@ -3121,7 +3117,6 @@ evalpipe(union node *n, int flags) * we fork off a subprocess and get the output of the command via a pipe. * Should be called with interrupts off. */ - static void evalbackcmd(union node *n, struct backcmd *result) { @@ -3162,7 +3157,7 @@ evalbackcmd(union node *n, struct backcmd *result) result->jp = jp; } herefd = saveherefd; -out: + out: TRACE(("evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n", result->fd, result->buf, result->nleft, result->jp)); } @@ -3178,7 +3173,8 @@ static char ** parse_command_args(char **argv, const char **path) return 0; if (*cp++ != '-') break; - if (!(c = *cp++)) + c = *cp++; + if (!c) break; if (c == '-' && !*cp) { argv++; @@ -3216,7 +3212,6 @@ static const char *expandstr(const char *ps); /* * Execute a simple command. */ - static void evalcommand(union node *cmd, int flags) { @@ -3369,7 +3364,7 @@ evalcommand(union node *cmd, int flags) /* We have a redirection error. */ if (spclbltin > 0) exraise(EXERROR); -bail: + bail: exitstatus = status; goto out; } @@ -3423,7 +3418,7 @@ bail: exitstatus = exit_status; if (i == EXINT || spclbltin > 0) { -raise: + raise: longjmp(handler->loc, 1); } FORCEINTON; @@ -3437,7 +3432,7 @@ raise: break; } -out: + out: popredir(cmd_is_exec); if (lastarg) /* dsl: I think this is intended to be used to support @@ -3449,14 +3444,16 @@ out: } static int -evalbltin(const struct builtincmd *cmd, int argc, char **argv) { +evalbltin(const struct builtincmd *cmd, int argc, char **argv) +{ char *volatile savecmdname; struct jmploc *volatile savehandler; struct jmploc jmploc; int i; savecmdname = commandname; - if ((i = setjmp(jmploc.loc))) + i = setjmp(jmploc.loc); + if (i) goto cmddone; savehandler = handler; handler = &jmploc; @@ -3465,7 +3462,7 @@ evalbltin(const struct builtincmd *cmd, int argc, char **argv) { optptr = NULL; /* initialize nextopt */ exitstatus = (*cmd->builtin)(argc, argv); flushall(); -cmddone: + cmddone: exitstatus |= ferror(stdout); clearerr(stdout); commandname = savecmdname; @@ -3486,7 +3483,8 @@ evalfun(struct funcnode *func, int argc, char **argv, int flags) saveparam = shellparam; savelocalvars = localvars; - if ((e = setjmp(jmploc.loc))) { + e = setjmp(jmploc.loc); + if (e) { goto funcdone; } INTOFF; @@ -3524,13 +3522,13 @@ static int goodname(const char *p) return !*endofname(p); } + /* * Search for a command. This is called before we fork so that the * location of the command will be available in the parent as well as * the child. The check for "goodname" is an overly conservative * check that the name will not be subject to expansion. */ - static void prehash(union node *n) { @@ -3550,7 +3548,6 @@ prehash(union node *n) /* * No command given. */ - static int bltincmd(int argc, char **argv) { @@ -3593,7 +3590,6 @@ breakcmd(int argc, char **argv) /* * The return command. */ - static int returncmd(int argc, char **argv) { @@ -3648,7 +3644,6 @@ execcmd(int argc, char **argv) #define ARB 1 /* actual size determined at run time */ - struct tblentry { struct tblentry *next; /* next entry in hash chain */ union param param; /* definition of builtin function */ @@ -3750,7 +3745,7 @@ tryexec(char *cmd, char **argv, char **envp) } #endif -repeat: + repeat: #ifdef SYSV do { execve(cmd, argv, envp); @@ -3779,7 +3774,6 @@ repeat: } - /* * Do a path search. The variable path (passed by reference) should be * set to the start of the path before the first call; padvance will update @@ -3789,7 +3783,6 @@ repeat: * pathopt will be set to point to it; otherwise pathopt will be set to * NULL. */ - static char * padvance(const char **path, const char *name) { @@ -3868,7 +3861,8 @@ hashcmd(int argc, char **argv) } c = 0; while ((name = *argptr) != NULL) { - if ((cmdp = cmdlookup(name, 0)) != NULL + cmdp = cmdlookup(name, 0); + if (cmdp != NULL && (cmdp->cmdtype == CMDNORMAL || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0))) delete_cmd_entry(); @@ -3885,7 +3879,6 @@ hashcmd(int argc, char **argv) * Resolve a command name. If you change this routine, you may have to * change the shellexec routine as well. */ - static void find_command(char *name, struct cmdentry *entry, int act, const char *path) { @@ -3937,7 +3930,8 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path) } /* If name is in the table, check answer will be ok */ - if ((cmdp = cmdlookup(name, 0)) != NULL) { + cmdp = cmdlookup(name, 0); + if (cmdp != NULL) { int bit; switch (cmdp->cmdtype) { @@ -3981,7 +3975,7 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path) e = ENOENT; idx = -1; -loop: + loop: while ((fullname = padvance(&path, name)) != NULL) { stunalloc(fullname); idx++; @@ -4020,8 +4014,8 @@ loop: if (pathopt) { /* this is a %func directory */ stalloc(strlen(fullname) + 1); readcmdfile(fullname); - if ((cmdp = cmdlookup(name, 0)) == NULL || - cmdp->cmdtype != CMDFUNCTION) + cmdp = cmdlookup(name, 0); + if (cmdp == NULL || cmdp->cmdtype != CMDFUNCTION) sh_error("%s not defined in %s", name, fullname); stunalloc(fullname); goto success; @@ -4048,7 +4042,7 @@ loop: entry->cmdtype = CMDUNKNOWN; return; -builtin_success: + builtin_success: if (!updatetbl) { entry->cmdtype = CMDBUILTIN; entry->u.cmd = bcmd; @@ -4059,7 +4053,7 @@ builtin_success: cmdp->cmdtype = CMDBUILTIN; cmdp->param.cmd = bcmd; INTON; -success: + success: cmdp->rehash = 0; entry->cmdtype = cmdp->cmdtype; entry->u = cmdp->param; @@ -4074,10 +4068,10 @@ static int pstrcmp(const void *a, const void *b) return strcmp((const char *) a, (*(const char *const *) b) + 1); } + /* * Search the table of builtin commands. */ - static struct builtincmd * find_builtin(const char *name) { @@ -4095,7 +4089,6 @@ find_builtin(const char *name) * Called when a cd is done. Marks all commands so the next time they * are executed they will be rehashed. */ - static void hashcd(void) { @@ -4121,7 +4114,6 @@ hashcd(void) * pathval() still returns the old value at this point. * Called with interrupts off. */ - static void changepath(const char *newval) { @@ -4165,7 +4157,6 @@ changepath(const char *newval) * Clear out command entries. The argument specifies the first entry in * PATH which has changed. */ - static void clearcmdentry(int firstchange) { @@ -4193,7 +4184,6 @@ clearcmdentry(int firstchange) } - /* * Locate a command in the command hash table. If "add" is nonzero, * add the command to the table if it is not already present. The @@ -4203,10 +4193,8 @@ clearcmdentry(int firstchange) * * Interrupts must be off if called with add != 0. */ - static struct tblentry **lastcmdentry; - static struct tblentry * cmdlookup(const char *name, int add) { @@ -4237,10 +4225,10 @@ cmdlookup(const char *name, int add) return cmdp; } + /* * Delete the command entry returned on the last lookup. */ - static void delete_cmd_entry(void) { @@ -4260,7 +4248,6 @@ delete_cmd_entry(void) * Add a new command entry, replacing any existing command entry for * the same name - except special builtins. */ - static void addcmdentry(char *name, struct cmdentry *entry) { struct tblentry *cmdp; @@ -4274,10 +4261,10 @@ static void addcmdentry(char *name, struct cmdentry *entry) cmdp->rehash = 0; } + /* * Make a copy of a parse tree. */ - static struct funcnode * copyfunc(union node *n) { struct funcnode *f; @@ -4295,10 +4282,10 @@ static struct funcnode * copyfunc(union node *n) return f; } + /* * Define a shell function. */ - static void defun(char *name, union node *func) { @@ -4315,7 +4302,6 @@ defun(char *name, union node *func) /* * Delete a function if it exists. */ - static void unsetfunc(const char *name) { @@ -4329,8 +4315,6 @@ unsetfunc(const char *name) /* * Locate and print what a word is... */ - - #if ENABLE_ASH_CMDCMD static int describe_command(char *command, int describe_command_verbose) @@ -4359,7 +4343,8 @@ describe_command(char *command) #if ENABLE_ASH_ALIAS /* Then look at the aliases */ - if ((ap = lookupalias(command, 0)) != NULL) { + ap = lookupalias(command, 0); + if (ap != NULL) { if (describe_command_verbose) { out1fmt(" is an alias for %s", ap->val); } else { @@ -4371,7 +4356,8 @@ describe_command(char *command) } #endif /* Then check if it is a tracked alias */ - if ((cmdp = cmdlookup(command, 0)) != NULL) { + cmdp = cmdlookup(command, 0); + if (cmdp != NULL) { entry.cmdtype = cmdp->cmdtype; entry.u = cmdp->param; } else { @@ -4426,8 +4412,7 @@ describe_command(char *command) } return 127; } - -out: + out: outstr("\n", stdout); return 0; } @@ -4543,7 +4528,8 @@ static void varunset(const char *, const char *, const char *, int) * Returns an stalloced string. */ -static char * preglob(const char *pattern, int quoted, int flag) { +static char * preglob(const char *pattern, int quoted, int flag) +{ flag |= RMESCAPE_GLOB; if (quoted) { flag |= RMESCAPE_QUOTED; @@ -4581,8 +4567,7 @@ static void expandhere(union node *arg, int fd) * perform splitting and file name expansion. When arglist is NULL, perform * here document expansion. */ - -void +static void expandarg(union node *arg, struct arglist *arglist, int flag) { struct strlist *sp; @@ -4631,7 +4616,6 @@ expandarg(union node *arg, struct arglist *arglist, int flag) * characters to allow for further processing. Otherwise treat * $@ like $* since no splitting will be performed. */ - static void argstr(char *p, int flag) { @@ -4668,14 +4652,14 @@ argstr(char *p, int flag) char *q; flag &= ~EXP_TILDE; -tilde: + tilde: q = p; if (*q == CTLESC && (flag & EXP_QWORD)) q++; if (*q == '~') p = exptilde(p, q, flag); } -start: + start: startloc = expdest - (char *)stackblock(); for (;;) { length += strcspn(p + length, reject); @@ -4739,7 +4723,7 @@ start: goto start; } inquotes = !inquotes; -addquote: + addquote: if (quotes) { p--; length++; @@ -4767,7 +4751,7 @@ addquote: #endif } } -breakloop: + breakloop: ; } @@ -4798,12 +4782,13 @@ exptilde(char *startp, char *p, int flag) goto done; } } -done: + done: *p = '\0'; if (*name == '\0') { home = lookupvar(homestr); } else { - if ((pw = getpwnam(name)) == NULL) + pw = getpwnam(name); + if (pw == NULL) goto lose; home = pw->pw_dir; } @@ -4814,7 +4799,7 @@ done: strtodest(home, SQSYNTAX, quotes); recordregion(startloc, expdest - (char *)stackblock(), 0); return p; -lose: + lose: *p = c; return startp; } @@ -4922,10 +4907,10 @@ expari(int quotes) } #endif + /* * Expand stuff in backwards quotes. */ - static void expbackq(union node *cmd, int quoted, int quotes) { @@ -4952,7 +4937,7 @@ expbackq(union node *cmd, int quoted, int quotes) goto read; for (;;) { memtodest(p, i, syntax, quotes); -read: + read: if (in.fd < 0) break; i = safe_read(in.fd, buf, sizeof(buf)); @@ -5146,7 +5131,7 @@ evalvar(char *p, int flag) startloc = expdest - (char *)stackblock(); p = strchr(p, '=') + 1; -again: + again: varlen = varvalue(var, varflags, flag); if (varflags & VSNUL) varlen--; @@ -5157,7 +5142,7 @@ again: } if (subtype == VSMINUS) { -vsplus: + vsplus: if (varlen < 0) { argstr( p, flag | EXP_TILDE | @@ -5199,7 +5184,7 @@ vsplus: if (subtype == VSNORMAL) { if (!easy) goto end; -record: + record: recordregion(startloc, expdest - (char *)stackblock(), quoted); goto end; } @@ -5235,11 +5220,12 @@ record: goto record; } -end: + end: if (subtype != VSNORMAL) { /* skip to end of alternative */ int nesting = 1; for (;;) { - if ((c = *p++) == CTLESC) + c = *p++; + if (c == CTLESC) p++; else if (c == CTLBACKQ || c == (CTLBACKQ|CTLQUOTE)) { if (varlen >= 0) @@ -5260,7 +5246,6 @@ end: /* * Put a string on the stack. */ - static void memtodest(const char *p, size_t len, int syntax, int quotes) { char *q = expdest; @@ -5290,7 +5275,6 @@ strtodest(const char *p, int syntax, int quotes) /* * Add the value of a specialized variable to the stack string. */ - static ssize_t varvalue(char *name, int varflags, int flags) { @@ -5324,7 +5308,7 @@ varvalue(char *name, int varflags, int flags) num = backgndpid; if (num == 0) return -1; -numvar: + numvar: len = cvtnum(num); break; case '-': @@ -5345,8 +5329,9 @@ numvar: sep = ifsset() ? SC2INT(ifsval()[0]) : ' '; if (quotes && (SIT(sep, syntax) == CCTL || SIT(sep, syntax) == CBACK)) sepq = 1; -param: - if (!(ap = shellparam.p)) + param: + ap = shellparam.p; + if (!ap) return -1; while ((p = *ap++)) { size_t partlen; @@ -5389,7 +5374,7 @@ param: goto value; default: p = lookupvar(name); -value: + value: if (!p) return -1; @@ -5409,7 +5394,6 @@ value: * Record the fact that we have to scan this region of the * string for IFS characters. */ - static void recordregion(int start, int end, int nulonly) { @@ -5513,7 +5497,7 @@ ifsbreakup(char *string, struct arglist *arglist) if (!*start) return; -add: + add: sp = (struct strlist *)stalloc(sizeof(*sp)); sp->text = start; *arglist->lastp = sp; @@ -5580,7 +5564,7 @@ expandmeta(struct strlist *str, int flag) /* * no matches */ -nometa: + nometa: *exparg.lastp = str; rmescapes(str->text); exparg.lastp = &str->next; @@ -5595,10 +5579,10 @@ nometa: } } + /* * Add a file name to the list. */ - static void addfname(const char *name) { @@ -5614,7 +5598,6 @@ addfname(const char *name) /* * Do metacharacter (i.e. *, ?, [...]) expansion. */ - static void expmeta(char *enddir, char *name) { @@ -5656,7 +5639,7 @@ expmeta(char *enddir, char *name) start = p + 1; } } -out: + out: if (metaflag == 0) { /* we've reached the end of the file name */ if (enddir != expdir) metaflag++; @@ -5687,7 +5670,8 @@ out: cp = expdir; enddir[-1] = '\0'; } - if ((dirp = opendir(cp)) == NULL) + dirp = opendir(cp); + if (dirp == NULL) return; if (enddir != expdir) enddir[-1] = '/'; @@ -5723,12 +5707,12 @@ out: endname[-1] = '/'; } + /* * Sort the results of file name expansion. It calculates the number of * strings to sort and then calls msort (short for merge sort) to do the * work. */ - static struct strlist * expsort(struct strlist *str) { @@ -5771,14 +5755,16 @@ msort(struct strlist *list, int len) { *lpp = p; lpp = &p->next; - if ((p = *lpp) == NULL) { + p = *lpp; + if (p == NULL) { *lpp = q; break; } } else { *lpp = q; lpp = &q->next; - if ((q = *lpp) == NULL) { + q = *lpp; + if (q == NULL) { *lpp = p; break; } @@ -5791,7 +5777,6 @@ msort(struct strlist *list, int len) /* * Returns true if the pattern matches the string. */ - static int patmatch(char *pattern, const char *string) { return pmatch(preglob(pattern, 0, 0), string); @@ -5801,7 +5786,6 @@ static int patmatch(char *pattern, const char *string) /* * Remove any CTLESC characters from a string. */ - static char * _rmescapes(char *str, int flag) { @@ -5855,7 +5839,7 @@ _rmescapes(char *str, int flag) } } notescaped = globbing; -copy: + copy: *q++ = *p++; } *q = '\0'; @@ -5870,8 +5854,7 @@ copy: /* * See if a pattern matches in a case statement. */ - -int +static int casematch(union node *pattern, char *val) { struct stackmark smark; @@ -5888,10 +5871,10 @@ casematch(union node *pattern, char *val) return result; } + /* * Our own itoa(). */ - static int cvtnum(arith_t num) { @@ -6043,7 +6026,7 @@ static int preadfd(void) char *buf = parsefile->buf; parsenextc = buf; -retry: + retry: #if ENABLE_FEATURE_EDITING if (!iflag || parsefile->fd) nr = safe_read(parsefile->fd, buf, BUFSIZ - 1); @@ -6095,8 +6078,7 @@ retry: * 3) If the is more stuff in this buffer, use it else call read to fill it. * 4) Process input up to the next newline, deleting nul characters. */ - -int +static int preadbuffer(void) { char *q; @@ -6120,8 +6102,9 @@ preadbuffer(void) more = parselleft; if (more <= 0) { -again: - if ((more = preadfd()) <= 0) { + again: + more = preadfd(); + if (more <= 0) { parselleft = parsenleft = EOF_NLEFT; return PEOF; } @@ -6171,8 +6154,7 @@ again: * Undo the last call to pgetc. Only one character may be pushed back. * PEOF may be pushed back. */ - -void +static void pungetc(void) { parsenleft++; @@ -6183,7 +6165,7 @@ pungetc(void) * Push a string back onto the input at this current parsefile level. * We handle aliases this way. */ -void +static void pushstring(char *s, void *ap) { struct strpush *sp; @@ -6212,7 +6194,7 @@ pushstring(char *s, void *ap) INTON; } -void +static void popstring(void) { struct strpush *sp = parsefile->strpush; @@ -6241,11 +6223,11 @@ popstring(void) INTON; } + /* * Set the input to take input from a file. If push is set, push the * old input onto the stack first. */ - static int setinputfile(const char *fname, int flags) { @@ -6253,7 +6235,8 @@ setinputfile(const char *fname, int flags) int fd2; INTOFF; - if ((fd = open(fname, O_RDONLY)) < 0) { + fd = open(fname, O_RDONLY); + if (fd < 0) { if (flags & INPUT_NOFILE_OK) goto out; sh_error("Can't open %s", fname); @@ -6266,7 +6249,7 @@ setinputfile(const char *fname, int flags) fd = fd2; } setinputfd(fd, flags & INPUT_PUSH_FILE); -out: + out: INTON; return fd; } @@ -6276,7 +6259,6 @@ out: * Like setinputfile, but takes an open file descriptor. Call this with * interrupts off. */ - static void setinputfd(int fd, int push) { @@ -6296,7 +6278,6 @@ setinputfd(int fd, int push) /* * Like setinputfile, but takes input from a string. */ - static void setinputstring(char *string) { @@ -6314,7 +6295,6 @@ setinputstring(char *string) * To handle the "." command, a stack of input files is used. Pushfile * adds a new entry to the stack and popfile restores the previous level. */ - static void pushfile(void) { @@ -6358,7 +6338,6 @@ popfile(void) /* * Return to top level. */ - static void popallfiles(void) { @@ -6371,7 +6350,6 @@ popallfiles(void) * Close the file(s) that the shell is reading commands from. Called * after a fork is done. */ - static void closescript(void) { @@ -6484,8 +6462,7 @@ set_curjob(struct job *jp, unsigned mode) * * Called with interrupts off. */ - -void +static void setjobctl(int on) { int fd; @@ -6511,8 +6488,9 @@ setjobctl(int on) goto out; fcntl(fd, F_SETFD, FD_CLOEXEC); do { /* while we are in the background */ - if ((pgrp = tcgetpgrp(fd)) < 0) { -out: + pgrp = tcgetpgrp(fd); + if (pgrp < 0) { + out: sh_warnx("can't access tty; job control turned off"); mflag = on = 0; goto close; @@ -6538,7 +6516,7 @@ out: setsignal(SIGTSTP); setsignal(SIGTTOU); setsignal(SIGTTIN); -close: + close: close(fd); fd = -1; } @@ -6556,7 +6534,7 @@ killcmd(int argc, char **argv) struct job *jp; if (argc <= 1) { -usage: + usage: sh_error( "Usage: kill [-s sigspec | -signum | -sigspec] [pid | job]... or\n" "kill -l [exitstatus]" @@ -6697,7 +6675,7 @@ restartjob(struct job *jp, int mode) ps->status = -1; } } while (ps++, --i); -out: + out: status = (mode == FORK_FG) ? waitforjob(jp) : 0; INTON; return status; @@ -6738,8 +6716,7 @@ sprint_status(char *s, int status, int sigonly) else col = fmtstr(s, 16, "Done"); } - -out: + out: return col; } @@ -6791,8 +6768,7 @@ showjob(FILE *out, struct job *jp, int mode) do { /* for each process */ col = fmtstr(s, 48, " |\n%*c%d ", indent, ' ', ps->pid) - 3; - -start: + start: fprintf(out, "%s%*c%s", s, 33 - col >= 0 ? 33 - col : 0, ' ', ps->cmd ); @@ -6845,7 +6821,6 @@ jobscmd(int argc, char **argv) * Print a list of jobs. If "change" is nonzero, only print jobs whose * statuses have changed since the last call to showjobs. */ - static void showjobs(FILE *out, int mode) { @@ -6864,10 +6839,10 @@ showjobs(FILE *out, int mode) } #endif /* JOBS */ + /* * Mark a job structure as unused. */ - static void freejob(struct job *jp) { @@ -6928,7 +6903,7 @@ waitcmd(int argc, char **argv) if (job->ps[job->nprocs - 1].pid == pid) break; job = job->prev_job; -start: + start: if (!job) goto repeat; } while (1); @@ -6939,11 +6914,11 @@ start: dowait(DOWAIT_BLOCK, 0); job->waited = 1; retval = getstatus(job); -repeat: + repeat: ; } while (*++argv); -out: + out: return retval; } @@ -6951,7 +6926,6 @@ out: /* * Convert a job name to a job structure. */ - static struct job * getjob(const char *name, int getctl) { @@ -6977,14 +6951,14 @@ getjob(const char *name, int getctl) if (!p[1]) { if (c == '+' || c == '%') { -currentjob: + currentjob: err_msg = "No current job"; goto check; } else if (c == '-') { if (jp) jp = jp->prev_job; err_msg = "No previous job"; -check: + check: if (!jp) goto err; goto gotit; @@ -7020,14 +6994,14 @@ check: jp = jp->prev_job; } -gotit: + gotit: #if JOBS err_msg = "job %s not created under job control"; if (getctl && jp->jobctl == 0) goto err; #endif return jp; -err: + err: sh_error(err_msg, name); } @@ -7136,7 +7110,6 @@ growjobtab(void) * * Called with interrupts off. */ - static void forkchild(struct job *jp, union node *n, int mode) { int oldlvl; @@ -7240,6 +7213,7 @@ forkshell(struct job *jp, union node *n, int mode) return pid; } + /* * Wait for job to finish. * @@ -7260,8 +7234,7 @@ forkshell(struct job *jp, union node *n, int mode) * * Called with interrupts off. */ - -int +static int waitforjob(struct job *jp) { int st; @@ -7320,7 +7293,6 @@ waitforjob(struct job *jp) * (as opposed to running a builtin command or just typing return), * and the jobs command may give out of date information. */ - static int waitproc(int block, int *status) { int flags = 0; @@ -7334,10 +7306,10 @@ static int waitproc(int block, int *status) return wait3(status, flags, (struct rusage *)NULL); } + /* * Wait for a process to terminate. */ - static int dowait(int block, struct job *job) { @@ -7391,7 +7363,7 @@ dowait(int block, struct job *job) jobless--; goto out; -gotjob: + gotjob: if (state != JOBRUNNING) { thisjob->changed = 1; @@ -7407,7 +7379,7 @@ gotjob: } } -out: + out: INTON; if (thisjob && thisjob == job) { @@ -7428,7 +7400,6 @@ out: /* * return 1 if there are stopped jobs, otherwise 0 */ - int stoppedjobs(void) { @@ -7453,7 +7424,6 @@ out: * Return a string identifying a command (to be printed by the * jobs command). */ - #if JOBS static char *cmdnextc; @@ -7503,7 +7473,7 @@ cmdtxt(union node *n) goto binop; case NOR: p = " || "; -binop: + binop: cmdtxt(n->nbinary.ch1); cmdputs(p); n = n->nbinary.ch2; @@ -7515,7 +7485,7 @@ binop: case NNOT: cmdputs("!"); n = n->nnot.com; -donode: + donode: cmdtxt(n); break; case NIF: @@ -7540,14 +7510,14 @@ donode: goto until; case NUNTIL: p = "until "; -until: + until: cmdputs(p); cmdtxt(n->nbinary.ch1); n = n->nbinary.ch2; p = "; done"; -dodo: + dodo: cmdputs("; do "); -dotail: + dotail: cmdtxt(n); goto dotail2; case NFOR: @@ -7568,7 +7538,7 @@ dotail: break; case NARG: p = n->narg.text; -dotail2: + dotail2: cmdputs(p); break; case NHERE: @@ -7607,7 +7577,7 @@ dotail2: goto redir; case NFROMTO: p = "<>"; -redir: + redir: s[0] = n->nfile.fd + '0'; s[1] = '\0'; cmdputs(s); @@ -7714,10 +7684,10 @@ cmdputs(const char *s) break; } USTPUTC(c, nextc); -checkstr: + checkstr: if (!str) continue; -dostr: + dostr: while ((c = *str++)) { USTPUTC(c, nextc); } @@ -7793,14 +7763,12 @@ static time_t mailtime[MAXMBOXES]; static int mail_var_path_changed; - /* * Print appropriate message(s) if mail has arrived. * If mail_var_path_changed is set, * then the value of MAIL has mail_var_path_changed, * so we just update the values. */ - static void chkmail(void) { @@ -7869,7 +7837,6 @@ static void read_profile(const char *); * exception occurs. When an exception occurs the variable "state" * is used to figure out how far we had gotten. */ - int ash_main(int argc, char **argv); int ash_main(int argc, char **argv) { @@ -7949,11 +7916,11 @@ int ash_main(int argc, char **argv) if (isloginsh) { state = 1; read_profile("/etc/profile"); -state1: + state1: state = 2; read_profile(".profile"); } -state2: + state2: state = 3; if ( #ifndef linux @@ -7961,11 +7928,12 @@ state2: #endif iflag ) { - if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') { + shinit = lookupvar("ENV"); + if (shinit != NULL && *shinit != '\0') { read_profile(shinit); } } -state3: + state3: state = 4; if (minusc) evalstring(minusc, 0); @@ -8000,7 +7968,6 @@ state3: * Read and execute commands. "Top" is nonzero for the top level command * loop; it turns on prompting if the shell is interactive. */ - static int cmdloop(int top) { @@ -8057,7 +8024,6 @@ cmdloop(int top) /* * Read /etc/profile or .profile. Return on error. */ - static void read_profile(const char *name) { @@ -8077,7 +8043,6 @@ read_profile(const char *name) /* * Read a file containing shell functions. */ - static void readcmdfile(char *name) { @@ -8091,7 +8056,6 @@ readcmdfile(char *name) * Take commands from a file. To be compatible we should do a path * search for the file, which is necessary to find sub-commands. */ - static char * find_dot_file(char *name) { char *fullname; @@ -8186,7 +8150,6 @@ testcmd(int argc, char **argv) /* * Same for malloc, realloc, but returns an error when out of space. */ - static pointer ckrealloc(pointer p, size_t nbytes) { @@ -8205,7 +8168,6 @@ ckmalloc(size_t nbytes) /* * Make a copy of a string in safe storage. */ - static char * savestr(const char *s) { @@ -8224,8 +8186,6 @@ savestr(const char *s) * The size 504 was chosen because the Ultrix malloc handles that size * well. */ - - static pointer stalloc(size_t nbytes) { @@ -8260,7 +8220,7 @@ stalloc(size_t nbytes) } -void +static void stunalloc(pointer p) { #if DEBUG @@ -8274,7 +8234,7 @@ stunalloc(pointer p) } -void +static void setstackmark(struct stackmark *mark) { mark->stackp = stackp; @@ -8285,7 +8245,7 @@ setstackmark(struct stackmark *mark) } -void +static void popstackmark(struct stackmark *mark) { struct stack_block *sp; @@ -8313,8 +8273,7 @@ popstackmark(struct stackmark *mark) * possibly moving it (like realloc). Grabstackblock actually allocates the * part of the block that has been used. */ - -void +static void growstackblock(void) { size_t newlen; @@ -8374,6 +8333,7 @@ static void grabstackblock(size_t len) stacknleft -= len; } + /* * The following routines are somewhat easier to use than the above. * The user declares a variable of type STACKSTR, which may be declared @@ -8391,8 +8351,7 @@ static void grabstackblock(size_t len) * CHECKSTACKSPACE can be called before USTPUTC to ensure that there * is space for at least one character. */ - -void * +static void * growstackstr(void) { size_t len = stackblocksize(); @@ -8407,8 +8366,7 @@ growstackstr(void) /* * Called from CHECKSTRSPACE. */ - -char * +static char * makestrspace(size_t newlen, char *p) { size_t len = p - stacknxt; @@ -8426,7 +8384,7 @@ makestrspace(size_t newlen, char *p) return stackblock() + len; } -char * +static char * stnputs(const char *s, size_t n, char *p) { p = makestrspace(n, p); @@ -8434,7 +8392,7 @@ stnputs(const char *s, size_t n, char *p) return p; } -char * +static char * stputs(const char *s, char *p) { return stnputs(s, strlen(s), p); @@ -8452,8 +8410,7 @@ stputs(const char *s, char *p) /* * prefix -- see if pfx is a prefix of string. */ - -char * +static char * prefix(const char *string, const char *pfx) { while (*pfx) { @@ -8468,11 +8425,9 @@ prefix(const char *string, const char *pfx) * Convert a string of digits to an integer, printing an error message on * failure. */ - -int +static int number(const char *s) { - if (! is_number(s)) sh_error(illnum, s); return atoi(s); @@ -8482,8 +8437,7 @@ number(const char *s) /* * Check for a valid number. This should be elsewhere. */ - -int +static int is_number(const char *p) { do { @@ -8498,9 +8452,9 @@ is_number(const char *p) * Produce a possibly single quoted string suitable as input to the shell. * The return string is allocated on the stack. */ - -char * -single_quote(const char *s) { +static char * +single_quote(const char *s) +{ char *p; STARTSTACKSTR(p); @@ -8539,11 +8493,11 @@ single_quote(const char *s) { return stackblock(); } + /* * Like strdup but works with the ash stack. */ - -char * +static char * sstrdup(const char *p) { size_t len = strlen(p) + 1; @@ -8764,7 +8718,6 @@ nodesavestr(char *s) /* * Free a parse tree. */ - static void freefunc(struct funcnode *f) { @@ -8780,8 +8733,7 @@ static void setoption(int, int); /* * Process the shell command line arguments. */ - -void +static void procargs(int argc, char **argv) { int i; @@ -8820,7 +8772,7 @@ procargs(int argc, char **argv) goto setarg0; } else if (!sflag) { setinputfile(*xargv, 0); -setarg0: + setarg0: arg0 = *xargv++; commandname = arg0; } @@ -8839,7 +8791,7 @@ setarg0: } -void +static void optschanged(void) { #if DEBUG @@ -8869,11 +8821,11 @@ static void minus_o(char *name, int val) } } + /* * Process shell options. The global variable argptr contains a pointer * to the argument list; we advance it past the options. */ - static void options(int cmdline) { @@ -8885,7 +8837,8 @@ options(int cmdline) minusc = NULL; while ((p = *argptr) != NULL) { argptr++; - if ((c = *p++) == '-') { + c = *p++; + if (c == '-') { val = 1; if (p[0] == '\0' || LONE_DASH(p)) { if (!cmdline) { @@ -8941,8 +8894,7 @@ setoption(int flag, int val) /* * Set the shell parameters. */ - -void +static void setparam(char **argv) { char **newparam; @@ -8969,8 +8921,7 @@ setparam(char **argv) /* * Free the list of positional parameters. */ - -void +static void freeparam(volatile struct shparam *param) { char **ap; @@ -8986,8 +8937,7 @@ freeparam(volatile struct shparam *param) /* * The shift builtin command. */ - -int +static int shiftcmd(int argc, char **argv) { int n; @@ -9018,8 +8968,7 @@ shiftcmd(int argc, char **argv) /* * The set command builtin. */ - -int +static int setcmd(int argc, char **argv) { if (argc == 1) @@ -9103,7 +9052,7 @@ getopts(char *optstr, char *optvar, char **optfirst, int *param_optind, int *opt /* Current word is done, advance */ p = *optnext; if (p == NULL || *p != '-' || *++p == '\0') { -atend: + atend: p = NULL; done = 1; goto out; @@ -9152,8 +9101,7 @@ atend: p = NULL; } else err |= setvarsafe("OPTARG", nullstr, 0); - -out: + out: *optoff = p ? p - *(optnext - 1) : -1; *param_optind = optnext - optfirst + 1; fmtstr(s, sizeof(s), "%d", *param_optind); @@ -9170,14 +9118,14 @@ out: return done; } + /* * The getopts builtin. Shellparam.optnext points to the next argument * to be processed. Shellparam.optptr points to the next character to * be processed in the current argument. If shellparam.optnext is NULL, * then it's the first time getopts has been called. */ - -int +static int getoptscmd(int argc, char **argv) { char **optbase; @@ -9190,8 +9138,7 @@ getoptscmd(int argc, char **argv) shellparam.optind = 1; shellparam.optoff = -1; } - } - else { + } else { optbase = &argv[3]; if (shellparam.optind > argc - 2) { shellparam.optind = 1; @@ -9214,7 +9161,6 @@ getoptscmd(int argc, char **argv) * other arguments are unnecessary. It return the character, or '\0' on * end of input. */ - static int nextopt(const char *optstring) { @@ -9222,7 +9168,8 @@ nextopt(const char *optstring) const char *q; char c; - if ((p = optptr) == NULL || *p == '\0') { + p = optptr; + if (p == NULL || *p == '\0') { p = *argptr; if (p == NULL || *p != '-' || *++p == '\0') return '\0'; @@ -9250,7 +9197,7 @@ nextopt(const char *optstring) /* output.c */ -void +static void outstr(const char *p, FILE *file) { INTOFF; @@ -9258,7 +9205,7 @@ outstr(const char *p, FILE *file) INTON; } -void +static void flushall(void) { INTOFF; @@ -9267,7 +9214,7 @@ flushall(void) INTON; } -void +static void flusherr(void) { INTOFF; @@ -9300,7 +9247,7 @@ out1fmt(const char *fmt, ...) } -int +static int fmtstr(char *outbuf, size_t length, const char *fmt, ...) { va_list ap; @@ -9359,7 +9306,6 @@ static void setprompt(int); * Read and parse a command. Returns NEOF on end of file. (NULL is a * valid parse tree indicating a blank line.) */ - union node * parsecmd(int interact) { @@ -9408,8 +9354,7 @@ list(int nlflag) } if (n1 == NULL) { n1 = n2; - } - else { + } else { n3 = (union node *)stalloc(sizeof(struct nbinary)); n3->type = NSEMI; n3->nbinary.ch1 = n1; @@ -9457,7 +9402,8 @@ andor(void) n1 = pipeline(); for (;;) { - if ((t = readtoken()) == TAND) { + t = readtoken(); + if (t == TAND) { t = NAND; } else if (t == TOR) { t = NOR; @@ -9633,7 +9579,7 @@ command(void) if (lasttoken != TIN) synexpect(TIN); cpp = &n1->ncase.cases; -next_case: + next_case: checkkwd = CHKNL | CHKKWD; t = readtoken(); while (t != TESAC) { @@ -9660,7 +9606,8 @@ next_case: cpp = &cp->nclist.next; checkkwd = CHKNL | CHKKWD; - if ((t = readtoken()) != TESAC) { + t = readtoken(); + if (t != TESAC) { if (t != TENDCASE) synexpect(TENDCASE); else @@ -9689,7 +9636,7 @@ next_case: if (readtoken() != t) synexpect(t); -redir: + redir: /* Now check for redirection which may follow command */ checkkwd = CHKKWD | CHKALIAS; rpp = rpp2; @@ -9709,7 +9656,6 @@ redir: } n1->nredir.redirect = redir; } - return n1; } @@ -9782,7 +9728,7 @@ simplecmd(void) { goto out; } } -out: + out: *app = NULL; *vpp = NULL; *rpp = NULL; @@ -9807,7 +9753,7 @@ makename(void) return n; } -void fixredir(union node *n, const char *text, int err) +static void fixredir(union node *n, const char *text, int err) { TRACE(("Fix redir %s %d\n", text, err)); if (!err) @@ -9842,7 +9788,7 @@ parsefname(void) if (quoteflag == 0) n->type = NXHERE; TRACE(("Here document %d\n", n->type)); - if (! noexpand(wordtext) || (i = strlen(wordtext)) == 0 || i > EOFMARKLEN) + if (!noexpand(wordtext) || (i = strlen(wordtext)) == 0 || i > EOFMARKLEN) synerror("Illegal eof marker for << redirection"); rmescapes(wordtext); here->eofmark = wordtext; @@ -9850,7 +9796,7 @@ parsefname(void) if (heredoclist == NULL) heredoclist = here; else { - for (p = heredoclist ; p->next ; p = p->next); + for (p = heredoclist; p->next; p = p->next); p->next = here; } } else if (n->type == NTOFD || n->type == NFROMFD) { @@ -9864,7 +9810,6 @@ parsefname(void) /* * Input any here documents. */ - static void parseheredoc(void) { @@ -9908,7 +9853,7 @@ readtoken(void) #endif #if ENABLE_ASH_ALIAS -top: + top: #endif t = xxreadtoken(); @@ -9933,7 +9878,8 @@ top: if (checkkwd & CHKKWD) { const char *const *pp; - if ((pp = findkwd(wordtext))) { + pp = findkwd(wordtext); + if (pp) { lasttoken = t = pp - tokname_array; TRACE(("keyword %s recognized\n", tokname(t))); goto out; @@ -9943,7 +9889,8 @@ top: if (checkkwd & CHKALIAS) { #if ENABLE_ASH_ALIAS struct alias *ap; - if ((ap = lookupalias(wordtext, 1)) != NULL) { + ap = lookupalias(wordtext, 1); + if (ap != NULL) { if (*ap->val) { pushstring(ap->val, ap); } @@ -9951,7 +9898,7 @@ top: } #endif } -out: + out: checkkwd = 0; #if DEBUG if (!alreadyseen) @@ -10054,11 +10001,10 @@ static int xxreadtoken(void) } } } - return lasttoken = xxreadtoken_tokens[p - xxreadtoken_chars]; } } - } + } /* for */ } @@ -10128,7 +10074,7 @@ xxreadtoken(void) goto breakloop; } } -breakloop: + breakloop: return readtoken1(c, BASESYNTAX, (char *)NULL, 0); #undef RETURN } @@ -10372,7 +10318,6 @@ readtoken1(int firstc, int syntax, char *eofmark, int striptabs) * is called, c is set to the first character of the next input line. If * we are at the end of the here document, this routine sets the c to PEOF. */ - checkend: { if (eofmark) { #if ENABLE_ASH_ALIAS @@ -10410,7 +10355,6 @@ checkend: { * specifying the fd to be redirected. The variable "c" contains the * first character of the redirection operator. */ - parseredir: { char fd = *out; union node *np; @@ -10431,7 +10375,8 @@ parseredir: { } } else { /* c == '<' */ np->nfile.fd = 0; - switch (c = pgetc()) { + c = pgetc(); + switch (c) { case '<': if (sizeof(struct nfile) != sizeof(struct nhere)) { np = (union node *)stalloc(sizeof(struct nhere)); @@ -10440,7 +10385,8 @@ parseredir: { np->type = NHERE; heredoc = (struct heredoc *)stalloc(sizeof(struct heredoc)); heredoc->here = np; - if ((c = pgetc()) == '-') { + c = pgetc(); + if (c == '-') { heredoc->striptabs = 1; } else { heredoc->striptabs = 0; @@ -10473,7 +10419,6 @@ parseredir: { * Parse a substitution. At this point, we have read the dollar sign * and nothing else. */ - parsesub: { int subtype; int typeloc; @@ -10507,12 +10452,12 @@ parsesub: { if (c == '{') { c = pgetc(); if (c == '#') { - if ((c = pgetc()) == '}') + c = pgetc(); + if (c == '}') c = '#'; else subtype = VSLENGTH; - } - else + } else subtype = 0; } if (c > PEOA_OR_PEOF && is_name(c)) { @@ -10582,7 +10527,6 @@ parsesub: { * list of commands (passed by reference), and savelen is the number of * characters on the top of the stack which must be preserved. */ - parsebackq: { struct nodelist **nlpp; int savepbq; @@ -10629,12 +10573,14 @@ parsebackq: { if (needprompt) { setprompt(2); } - switch (pc = pgetc()) { + pc = pgetc(); + switch (pc) { case '`': goto done; case '\\': - if ((pc = pgetc()) == '\n') { + pc = pgetc(); + if (pc == '\n') { plinno++; if (doprompt) setprompt(2); @@ -10671,7 +10617,7 @@ parsebackq: { } STPUTC(pc, pout); } -done: + done: STPUTC('\0', pout); psavelen = pout - (char *)stackblock(); if (psavelen > 0) { @@ -10763,7 +10709,6 @@ parsearith: { * Returns true if the text contains nothing to expand (no dollar signs * or backquotes). */ - static int noexpand(char *text) { @@ -10787,7 +10732,6 @@ noexpand(char *text) * Return of a legal variable name (a letter or underscore followed by zero or * more letters, underscores, and digits). */ - static char * endofname(const char *name) { @@ -10809,7 +10753,6 @@ endofname(const char *name) * is the token that is expected, or -1 if more than one type of token can * occur at this point. */ - static void synexpect(int token) { char msg[64]; @@ -10834,7 +10777,6 @@ synerror(const char *msg) * called by editline -- any expansions to the prompt * should be added here. */ - #if ENABLE_ASH_EXPAND_PRMT static const char * expandstr(const char *ps) @@ -10963,12 +10905,12 @@ static int noclobberopen(const char *fname) return -1; } + /* * Handle here documents. Normally we fork off a process to write the * data to a pipe. If the document is short, we can stuff the data in * the pipe without forking. */ - static int openhere(union node *redir) { int pip[2]; @@ -10998,7 +10940,7 @@ static int openhere(union node *redir) expandhere(redir->nhere.doc, pip[1]); _exit(0); } -out: + out: close(pip[1]); return pip[0]; } @@ -11012,31 +10954,36 @@ openredirect(union node *redir) switch (redir->nfile.type) { case NFROM: fname = redir->nfile.expfname; - if ((f = open(fname, O_RDONLY)) < 0) + f = open(fname, O_RDONLY); + if (f < 0) goto eopen; break; case NFROMTO: fname = redir->nfile.expfname; - if ((f = open(fname, O_RDWR|O_CREAT|O_TRUNC, 0666)) < 0) + f = open(fname, O_RDWR|O_CREAT|O_TRUNC, 0666); + if (f < 0) goto ecreate; break; case NTO: /* Take care of noclobber mode. */ if (Cflag) { fname = redir->nfile.expfname; - if ((f = noclobberopen(fname)) < 0) + f = noclobberopen(fname); + if (f < 0) goto ecreate; break; } /* FALLTHROUGH */ case NCLOBBER: fname = redir->nfile.expfname; - if ((f = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) + f = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666); + if (f < 0) goto ecreate; break; case NAPPEND: fname = redir->nfile.expfname; - if ((f = open(fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0) + f = open(fname, O_WRONLY|O_CREAT|O_APPEND, 0666); + if (f < 0) goto ecreate; break; default: @@ -11055,9 +11002,9 @@ openredirect(union node *redir) } return f; -ecreate: + ecreate: sh_error("cannot create %s: %s", fname, errmsg(errno, E_CREAT)); -eopen: + eopen: sh_error("cannot open %s: %s", fname, errmsg(errno, E_OPEN)); } @@ -11078,6 +11025,7 @@ static void dupredirect(union node *redir, int f) } } + /* * Process a list of redirection commands. If the REDIR_PUSH flag is set, * old file descriptors are stashed away so that the redirection can be @@ -11085,7 +11033,6 @@ static void dupredirect(union node *redir, int f) * standard output, and the standard error if it becomes a duplicate of * stdout, is saved in memory. */ - static void redirect(union node *redir, int flags) { @@ -11151,8 +11098,7 @@ redirect(union node *redir, int flags) /* * Undo the effects of the last redirection. */ - -void +static void popredir(int drop) { struct redirtab *rp; @@ -11184,8 +11130,7 @@ popredir(int drop) /* * Discard all saved file descriptors. */ - -void +static void clearredir(int drop) { for (;;) { @@ -11202,8 +11147,7 @@ clearredir(int drop) * if the source file descriptor is closed, EMPTY if there are no unused * file descriptors left. */ - -int +static int copyfd(int from, int to) { int newfd; @@ -11219,7 +11163,7 @@ copyfd(int from, int to) } -int +static int redirectsafe(union node *redir, int flags) { int err; @@ -11228,7 +11172,8 @@ redirectsafe(union node *redir, int flags) struct jmploc jmploc; SAVEINT(saveint); - if (!(err = setjmp(jmploc.loc) * 2)) { + err = setjmp(jmploc.loc) * 2; + if (!err) { handler = &jmploc; redirect(redir, flags); } @@ -11249,7 +11194,7 @@ static void indent(int, char *, FILE *); static void trstring(char *); -void +static void showtree(union node *n) { trputs("showtree called\n"); @@ -11276,7 +11221,7 @@ shtree(union node *n, int ind, char *pfx, FILE *fp) goto binop; case NOR: s = " || "; -binop: + binop: shtree(n->nbinary.ch1, ind, NULL, fp); /* if (ind < 0) */ fputs(s, fp); @@ -11450,10 +11395,10 @@ indent(int amount, char *pfx, FILE *fp) */ -FILE *tracefile; +static FILE *tracefile; -void +static void trputc(int c) { if (debug != 1) @@ -11461,7 +11406,7 @@ trputc(int c) putc(c, tracefile); } -void +static void trace(const char *fmt, ...) { va_list va; @@ -11473,7 +11418,7 @@ trace(const char *fmt, ...) va_end(va); } -void +static void tracev(const char *fmt, va_list va) { if (debug != 1) @@ -11482,7 +11427,7 @@ tracev(const char *fmt, va_list va) } -void +static void trputs(const char *s) { if (debug != 1) @@ -11512,7 +11457,7 @@ trstring(char *s) case CTLVAR+CTLQUOTE: c = 'V'; goto backslash; case CTLBACKQ: c = 'q'; goto backslash; case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash; -backslash: putc('\\', tracefile); + backslash: putc('\\', tracefile); putc(c, tracefile); break; default: @@ -11531,7 +11476,7 @@ backslash: putc('\\', tracefile); } -void +static void trargs(char **ap) { if (debug != 1) @@ -11546,7 +11491,7 @@ trargs(char **ap) } -void +static void opentrace(void) { char s[100]; @@ -11568,14 +11513,16 @@ opentrace(void) return; } } else { - if ((tracefile = fopen(s, "a")) == NULL) { + tracefile = fopen(s, "a"); + if (tracefile == NULL) { fprintf(stderr, "Can't open %s\n", s); debug = 0; return; } } #ifdef O_APPEND - if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0) + flags = fcntl(fileno(tracefile), F_GETFL, 0); + if (flags >= 0) fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND); #endif setlinebuf(tracefile); @@ -11602,8 +11549,7 @@ opentrace(void) /* * The trap builtin. */ - -int +static int trapcmd(int argc, char **argv) { char *action; @@ -11629,7 +11575,8 @@ trapcmd(int argc, char **argv) else action = *ap++; while (*ap) { - if ((signo = get_signum(*ap)) < 0) + signo = get_signum(*ap); + if (signo < 0) sh_error("%s: bad trap", *ap); INTOFF; if (action) { @@ -11653,8 +11600,7 @@ trapcmd(int argc, char **argv) /* * Clear traps on a fork. */ - -void +static void clear_traps(void) { char **tp; @@ -11676,15 +11622,15 @@ clear_traps(void) * Set the signal handler for the specified signal. The routine figures * out what it should be set to. */ - -void +static void setsignal(int signo) { int action; char *t, tsig; struct sigaction act; - if ((t = trap[signo]) == NULL) + t = trap[signo]; + if (t == NULL) action = S_DFL; else if (*t != '\0') action = S_CATCH; @@ -11759,11 +11705,11 @@ setsignal(int signo) sigaction(signo, &act, 0); } + /* * Ignore a signal. */ - -void +static void ignoresig(int signo) { if (sigmode[signo - 1] != S_IGN && sigmode[signo - 1] != S_HARD_IGN) { @@ -11776,8 +11722,7 @@ ignoresig(int signo) /* * Signal handler. */ - -void +static void onsig(int signo) { gotsig[signo - 1] = 1; @@ -11795,8 +11740,7 @@ onsig(int signo) * Called to execute a trap. Perhaps we should avoid entering new trap * handlers while we are executing a trap handler. */ - -int +static int dotrap(void) { char *p; @@ -11830,8 +11774,7 @@ dotrap(void) /* * Controls whether the shell is interactive or not. */ - -void +static void setinteractive(int on) { static int is_interactive; @@ -11889,11 +11832,11 @@ static int helpcmd(int argc, char **argv) } #endif /* FEATURE_SH_EXTRA_QUIET */ + /* * Called to exit the shell. */ - -void +static void exitshell(void) { struct jmploc loc; @@ -11912,12 +11855,13 @@ exitshell(void) goto out; } handler = &loc; - if ((p = trap[0])) { + p = trap[0]; + if (p) { trap[0] = NULL; evalstring(p, 0); } flushall(); -out: + out: setjobctl(0); _exit(status); /* NOTREACHED */ @@ -11939,8 +11883,7 @@ static struct var **findvar(struct var **, const char *); /* * Safe version of setvar, returns 1 on success 0 on failure. */ - -int +static int setvarsafe(const char *name, const char *val, int flags) { int err; @@ -11962,11 +11905,11 @@ setvarsafe(const char *name, const char *val, int flags) } #endif + /* * Set the value of a variable. The flags argument is ored with the * flags of the variable. If val is NULL, the variable is unset. */ - static void setvar(const char *name, const char *val, int flags) { @@ -12006,8 +11949,7 @@ setvar(const char *name, const char *val, int flags) * will go away. * Called with interrupts off. */ - -void +static void setvareq(char *s, int flags) { struct var *vp, **vpp; @@ -12054,7 +11996,6 @@ setvareq(char *s, int flags) /* * Process a linked list of variable assignments. */ - static void listsetvar(struct strlist *list_set_var, int flags) { @@ -12073,13 +12014,13 @@ listsetvar(struct strlist *list_set_var, int flags) /* * Find the value of a variable. Returns NULL if not set. */ - static char * lookupvar(const char *name) { struct var *v; - if ((v = *findvar(hashvar(name), name))) { + v = *findvar(hashvar(name), name); + if (v) { #ifdef DYNAMIC_VAR /* * Dynamic variables are implemented roughly the same way they are @@ -12101,7 +12042,6 @@ lookupvar(const char *name) /* * Search the environment of a builtin command. */ - static char * bltinlookup(const char *name) { @@ -12118,7 +12058,6 @@ bltinlookup(const char *name) /* * Generate a list of variables satisfying the given conditions. */ - static char ** listvars(int on, int off, char ***end) { @@ -12154,7 +12093,6 @@ listvars(int on, int off, char ***end) * instead of hashed lists. * For now just roll 'em through qsort for printing... */ - static int showvars(const char *sep_prefix, int on, int off) { @@ -12185,7 +12123,6 @@ showvars(const char *sep_prefix, int on, int off) /* * The export and readonly commands. */ - static int exportcmd(int argc, char **argv) { @@ -12199,10 +12136,12 @@ exportcmd(int argc, char **argv) notp = nextopt("p") - 'p'; if (notp && ((name = *(aptr = argptr)))) { do { - if ((p = strchr(name, '=')) != NULL) { + p = strchr(name, '='); + if (p != NULL) { p++; } else { - if ((vp = *findvar(hashvar(name), name))) { + vp = *findvar(hashvar(name), name); + if (vp) { vp->flags |= flag; continue; } @@ -12222,7 +12161,6 @@ exportcmd(int argc, char **argv) * will be restored when the shell function returns. We handle the name * "-" as a special case. */ - static void mklocal(char *name) { struct localvar *lvp; @@ -12263,10 +12201,10 @@ static void mklocal(char *name) INTON; } + /* * The "local" command. */ - static int localcmd(int argc, char **argv) { @@ -12284,7 +12222,6 @@ localcmd(int argc, char **argv) * Called after a function returns. * Interrupts must be off. */ - static void poplocalvars(void) { @@ -12319,8 +12256,7 @@ poplocalvars(void) * variable to allow a function to be unset when there is a readonly variable * with the same name. */ - -int +static int unsetcmd(int argc, char **argv) { char **ap; @@ -12349,8 +12285,7 @@ unsetcmd(int argc, char **argv) /* * Unset the specified variable. */ - -int +static int unsetvar(const char *s) { struct var **vpp; @@ -12385,8 +12320,7 @@ unsetvar(const char *s) ok: retval = 0; } - -out: + out: return retval; } @@ -12394,7 +12328,6 @@ out: /* * Find the appropriate entry in the hash table from the name. */ - static struct var ** hashvar(const char *p) { @@ -12412,8 +12345,7 @@ hashvar(const char *p) * string must be terminated by '='; the second may be terminated by * either '=' or '\0'. */ - -int +static int varcmp(const char *p, const char *q) { int c, d; @@ -12428,7 +12360,7 @@ varcmp(const char *p, const char *q) c = 0; if (d == '=') d = 0; -out: + out: return c - d; } @@ -12513,7 +12445,6 @@ dash_arith(const char *s) * * Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru> */ - static int letcmd(int argc, char **argv) { @@ -12550,7 +12481,6 @@ typedef enum __rlimit_resource rlim_t; * * This uses unbuffered input, which may be avoidable in some cases. */ - static int readcmd(int argc, char **argv) { @@ -12639,9 +12569,11 @@ readcmd(int argc, char **argv) if (prompt && isatty(0)) { out2str(prompt); } - if (*(ap = argptr) == NULL) + ap = argptr; + if (*ap == NULL) sh_error("arg count"); - if ((ifs = bltinlookup("IFS")) == NULL) + ifs = bltinlookup("IFS"); + if (ifs == NULL) ifs = defifs; #if ENABLE_ASH_READ_NCHARS if (nch_flag || silent) { @@ -12712,7 +12644,7 @@ readcmd(int argc, char **argv) startword = 1; STARTSTACKSTR(p); } else { -put: + put: STPUTC(c, p); } } @@ -12756,7 +12688,8 @@ static int umaskcmd(int argc, char **argv) umask(mask); INTON; - if ((ap = *argptr) == NULL) { + ap = *argptr; + if (ap == NULL) { if (symbolic_mode) { char buf[18]; char *p = buf; @@ -13465,7 +13398,8 @@ static arith_t arith(const char *expr, int *perrcode) *perrcode = errcode = 0; while (1) { - if ((arithval = *expr) == 0) { + arithval = *expr; + if (arithval == 0) { if (p == endexpression) { /* Null expression. */ return 0; @@ -13503,7 +13437,8 @@ static arith_t arith(const char *expr, int *perrcode) /* Skip whitespace */ goto prologue; } - if ((p = endofname(expr)) != expr) { + p = endofname(expr); + if (p != expr) { size_t var_name_size = (p-expr) + 1; /* trailing zero */ numstackptr->var = alloca(var_name_size); |