From owner-svn-src-all@FreeBSD.ORG Sun Oct 5 21:51:38 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5E8D286C; Sun, 5 Oct 2014 21:51:38 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4A79CF96; Sun, 5 Oct 2014 21:51:38 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s95LpcLj035050; Sun, 5 Oct 2014 21:51:38 GMT (envelope-from jilles@FreeBSD.org) Received: (from jilles@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id s95Lpbvx035042; Sun, 5 Oct 2014 21:51:37 GMT (envelope-from jilles@FreeBSD.org) Message-Id: <201410052151.s95Lpbvx035042@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: jilles set sender to jilles@FreeBSD.org using -f From: Jilles Tjoelker Date: Sun, 5 Oct 2014 21:51:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r272575 - head/bin/sh X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 Oct 2014 21:51:38 -0000 Author: jilles Date: Sun Oct 5 21:51:36 2014 New Revision: 272575 URL: https://svnweb.freebsd.org/changeset/base/272575 Log: sh: Eliminate some gotos. Modified: head/bin/sh/eval.c head/bin/sh/expand.c head/bin/sh/jobs.c head/bin/sh/redir.c head/bin/sh/trap.c Modified: head/bin/sh/eval.c ============================================================================== --- head/bin/sh/eval.c Sun Oct 5 21:39:50 2014 (r272574) +++ head/bin/sh/eval.c Sun Oct 5 21:51:36 2014 (r272575) @@ -316,9 +316,10 @@ evalloop(union node *n, int flags) loopnest++; status = 0; for (;;) { - evaltree(n->nbinary.ch1, EV_TESTED); + if (!evalskip) + evaltree(n->nbinary.ch1, EV_TESTED); if (evalskip) { -skipping: if (evalskip == SKIPCONT && --skipcount <= 0) { + if (evalskip == SKIPCONT && --skipcount <= 0) { evalskip = 0; continue; } @@ -337,8 +338,6 @@ skipping: if (evalskip == SKIPCONT && } evaltree(n->nbinary.ch2, flags); status = exitstatus; - if (evalskip) - goto skipping; } loopnest--; exitstatus = status; @@ -648,15 +647,15 @@ evalbackcmd(union node *n, struct backcm struct jmploc *savehandler; struct localvar *savelocalvars; - setstackmark(&smark); result->fd = -1; result->buf = NULL; result->nleft = 0; result->jp = NULL; if (n == NULL) { exitstatus = 0; - goto out; + return; } + setstackmark(&smark); exitstatus = oexitstatus; if (is_valid_fast_cmdsubst(n)) { savelocalvars = localvars; @@ -698,7 +697,6 @@ evalbackcmd(union node *n, struct backcm result->fd = pip[0]; result->jp = jp; } -out: popstackmark(&smark); TRACE(("evalbackcmd done: fd=%d buf=%p nleft=%d jp=%p\n", result->fd, result->buf, result->nleft, result->jp)); Modified: head/bin/sh/expand.c ============================================================================== --- head/bin/sh/expand.c Sun Oct 5 21:39:50 2014 (r272574) +++ head/bin/sh/expand.c Sun Oct 5 21:51:36 2014 (r272575) @@ -328,24 +328,19 @@ exptilde(char *p, int flag) done: *p = '\0'; if (*(startp+1) == '\0') { - if ((home = lookupvar("HOME")) == NULL) - goto lose; + home = lookupvar("HOME"); } else { - if ((pw = getpwnam(startp+1)) == NULL) - goto lose; - home = pw->pw_dir; + pw = getpwnam(startp+1); + home = pw != NULL ? pw->pw_dir : NULL; } - if (*home == '\0') - goto lose; *p = c; + if (home == NULL || *home == '\0') + return (startp); if (quotes) STPUTS_QUOTES(home, SQSYNTAX, expdest); else STPUTS(home, expdest); return (p); -lose: - *p = c; - return (startp); } Modified: head/bin/sh/jobs.c ============================================================================== --- head/bin/sh/jobs.c Sun Oct 5 21:39:50 2014 (r272574) +++ head/bin/sh/jobs.c Sun Oct 5 21:51:36 2014 (r272575) @@ -373,13 +373,13 @@ showjob(struct job *jp, int mode) strcat(statestr, " (core dumped)"); } - for (ps = jp->ps ; ; ps++) { /* for each process */ + for (ps = jp->ps ; procno > 0 ; ps++, procno--) { /* for each process */ if (mode == SHOWJOBS_PIDS || mode == SHOWJOBS_PGIDS) { out1fmt("%d\n", (int)ps->pid); - goto skip; + continue; } if (mode != SHOWJOBS_VERBOSE && ps != jp->ps) - goto skip; + continue; if (jobno == curr && ps == jp->ps) c = '+'; else if (jobno == prev && ps == jp->ps) @@ -410,8 +410,6 @@ showjob(struct job *jp, int mode) out1c('\n'); } else printjobcmd(jp); -skip: if (--procno <= 0) - break; } } Modified: head/bin/sh/redir.c ============================================================================== --- head/bin/sh/redir.c Sun Oct 5 21:39:50 2014 (r272574) +++ head/bin/sh/redir.c Sun Oct 5 21:51:36 2014 (r272575) @@ -173,21 +173,12 @@ openredirect(union node *redir, char mem fname = redir->nfile.expfname; if ((f = open(fname, O_RDONLY)) < 0) error("cannot open %s: %s", fname, strerror(errno)); -movefd: - if (f != fd) { - if (dup2(f, fd) == -1) { - e = errno; - close(f); - error("%d: %s", fd, strerror(e)); - } - close(f); - } break; case NFROMTO: fname = redir->nfile.expfname; if ((f = open(fname, O_RDWR|O_CREAT, 0666)) < 0) error("cannot create %s: %s", fname, strerror(errno)); - goto movefd; + break; case NTO: if (Cflag) { fname = redir->nfile.expfname; @@ -205,19 +196,19 @@ movefd: } else error("cannot create %s: %s", fname, strerror(EEXIST)); - goto movefd; + break; } /* FALLTHROUGH */ case NCLOBBER: fname = redir->nfile.expfname; if ((f = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) error("cannot create %s: %s", fname, strerror(errno)); - goto movefd; + break; case NAPPEND: fname = redir->nfile.expfname; if ((f = open(fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0) error("cannot create %s: %s", fname, strerror(errno)); - goto movefd; + break; case NTOFD: case NFROMFD: if (redir->ndup.dupfd >= 0) { /* if not ">&-" */ @@ -231,14 +222,22 @@ movefd: } else { close(fd); } - break; + return; case NHERE: case NXHERE: f = openhere(redir); - goto movefd; + break; default: abort(); } + if (f != fd) { + if (dup2(f, fd) == -1) { + e = errno; + close(f); + error("%d: %s", fd, strerror(e)); + } + close(f); + } } Modified: head/bin/sh/trap.c ============================================================================== --- head/bin/sh/trap.c Sun Oct 5 21:39:50 2014 (r272574) +++ head/bin/sh/trap.c Sun Oct 5 21:51:36 2014 (r272575) @@ -510,28 +510,25 @@ exitshell_savedstatus(void) exiting_exitstatus = oexitstatus; } exitstatus = oexitstatus = exiting_exitstatus; - if (setjmp(loc1.loc)) { - goto l1; + if (!setjmp(loc1.loc)) { + handler = &loc1; + if ((p = trap[0]) != NULL && *p != '\0') { + /* + * Reset evalskip, or the trap on EXIT could be + * interrupted if the last command was a "return". + */ + evalskip = 0; + trap[0] = NULL; + evalstring(p, 0); + } } - if (setjmp(loc2.loc)) { - goto l2; - } - handler = &loc1; - if ((p = trap[0]) != NULL && *p != '\0') { - /* - * Reset evalskip, or the trap on EXIT could be - * interrupted if the last command was a "return". - */ - evalskip = 0; - trap[0] = NULL; - evalstring(p, 0); - } -l1: handler = &loc2; /* probably unnecessary */ - flushall(); + if (!setjmp(loc2.loc)) { + handler = &loc2; /* probably unnecessary */ + flushall(); #if JOBS - setjobctl(0); + setjobctl(0); #endif -l2: + } if (sig != 0 && sig != SIGSTOP && sig != SIGTSTP && sig != SIGTTIN && sig != SIGTTOU) { signal(sig, SIG_DFL);