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authorPeter Stephenson <pws@users.sourceforge.net>2011-02-21 11:28:49 +0000
committerPeter Stephenson <pws@users.sourceforge.net>2011-02-21 11:28:49 +0000
commit0e792b944707fdb8abafa4b4e3f3952154189c6f (patch)
tree0730059b6994adb39e85e65f6eb282310164e2d1
parent3c020a9a9c3b0cee6c25e565e001e3bbc0e1c421 (diff)
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28784: exit on exec redirection error with POISX_BUILTINS
-rw-r--r--ChangeLog7
-rw-r--r--Doc/Zsh/options.yo4
-rw-r--r--Src/exec.c19
-rw-r--r--Test/A04redirect.ztst12
4 files changed, 39 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index b5e23d523..c0fb29e8b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-02-21  Peter Stephenson  <pws@csr.com>
+
+	* 28784: Doc/Zsh/options.yo, Test/A04redirect.ztst, Src/exec.c:
+	exit on exec redirection error with POSIXBUILTINS.
+
 2011-02-19  Frank Terbeck  <ft@bewatermyfriend.org>
 
 	* 28776: Functions/VCS_Info/VCS_INFO_bydir_detect,
@@ -14233,5 +14238,5 @@
 
 *****************************************************
 * This is used by the shell to define $ZSH_PATCHLEVEL
-* $Revision: 1.5203 $
+* $Revision: 1.5204 $
 *****************************************************
diff --git a/Doc/Zsh/options.yo b/Doc/Zsh/options.yo
index a96597157..842e5c27b 100644
--- a/Doc/Zsh/options.yo
+++ b/Doc/Zsh/options.yo
@@ -1866,6 +1866,10 @@ tt(source),
 tt(times),
 tt(trap) and
 tt(unset).
+
+In addition, a failed redirection after tt(exec) causes a non-interactive
+shell to exit and an interactive shell to return to its top-level
+processing.
 )
 pindex(POSIX_IDENTIFIERS)
 pindex(NO_POSIX_IDENTIFIERS)
diff --git a/Src/exec.c b/Src/exec.c
index 11d37f1b3..da67465d8 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -181,7 +181,15 @@ struct execstack *exstack;
 /**/
 mod_export Funcstack funcstack;
 
-#define execerr() if (!forked) { lastval = 1; goto done; } else _exit(1)
+#define execerr()				\
+    do {					\
+	if (!forked) {				\
+	    redir_err = lastval = 1;		\
+	    goto done;				\
+	} else {				\
+	    _exit(1);				\
+	}					\
+    } while (0)
 
 static int doneps4;
 static char *STTYval;
@@ -2312,7 +2320,7 @@ execcmd(Estate state, int input, int output, int how, int last1)
     struct multio *mfds[10];
     char *text;
     int save[10];
-    int fil, dfil, is_cursh, type, do_exec = 0, i, htok = 0;
+    int fil, dfil, is_cursh, type, do_exec = 0, redir_err = 0, i, htok = 0;
     int nullexec = 0, assign = 0, forked = 0;
     int is_shfunc = 0, is_builtin = 0, is_exec = 0, use_defpath = 0;
     /* Various flags to the command. */
@@ -3289,6 +3297,13 @@ execcmd(Estate state, int input, int output, int how, int last1)
     fixfds(save);
 
  done:
+    if (redir_err && isset(POSIXBUILTINS)) {
+	if (!isset(INTERACTIVE)) {
+	    /* We've already _exit'ed if forked */
+	    exit(1);
+	}
+	errflag = 1;
+    }
     if (newxtrerr) {
 	fil = fileno(newxtrerr);
 	fclose(newxtrerr);
diff --git a/Test/A04redirect.ztst b/Test/A04redirect.ztst
index 1c63b6377..c35977c66 100644
--- a/Test/A04redirect.ztst
+++ b/Test/A04redirect.ztst
@@ -366,3 +366,15 @@
 >more output:
 >This file contains data.
 >This file contains data.
+
+  $ZTST_testdir/../Src/zsh -fc 'exec >/nonexistent/nonexistent
+  echo output'
+0:failed exec redir, no POSIX_BUILTINS
+>output
+?zsh:1: no such file or directory: /nonexistent/nonexistent
+
+  $ZTST_testdir/../Src/zsh -f -o POSIX_BUILTINS -c '
+  exec >/nonexistent/nonexistent
+  echo output'
+1:failed exec redir, POSIX_BUILTINS
+?zsh:2: no such file or directory: /nonexistent/nonexistent