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- Hack poptBadOption() to return something semi-meaningful on exec alias

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failures (#697435, #710267)
This commit is contained in:
Panu Matilainen 2012-08-02 16:16:49 +03:00
parent f3d7f8c4f4
commit 69ee8930bc
2 changed files with 77 additions and 1 deletions
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70
popt-1.13-execfail.patch Normal file
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@ -0,0 +1,70 @@
Kludge poptBadOption() to return something semi-meaningful on exec alias fail
- poptBadOption() is totally unaware of exec alias failures, and
will return either the first argument or last option, giving
wonderfully misleading error messages (#697435, #710267).
- Remember execvp() first argument on failure and return that
from poptBadOption() if present to give the user a reasonable
clue what exactly went wrong.
diff -up popt-1.13/popt.c.execfail popt-1.13/popt.c
--- popt-1.13/popt.c.execfail 2012-08-02 16:08:34.762315304 +0300
+++ popt-1.13/popt.c 2012-08-02 16:11:41.352683721 +0300
@@ -186,6 +186,7 @@ poptContext poptGetContext(const char *
con->flags = flags;
con->execs = NULL;
con->numExecs = 0;
+ con->execFail = NULL;
con->finalArgvAlloced = argc * 2;
con->finalArgv = calloc( con->finalArgvAlloced, sizeof(*con->finalArgv) );
con->execAbsolute = 1;
@@ -234,6 +235,7 @@ void poptResetContext(poptContext con)
con->nextLeftover = 0;
con->restLeftover = 0;
con->doExec = NULL;
+ con->execFail = _free(con->execFail);
if (con->finalArgv != NULL)
for (i = 0; i < con->finalArgvCount; i++) {
@@ -468,6 +470,7 @@ if (_popt_debug)
/*@-nullstate@*/
rc = execvp(argv[0], (char *const *)argv);
/*@=nullstate@*/
+ con->execFail = xstrdup(argv[0]);
exit:
if (argv) {
@@ -1194,11 +1197,19 @@ int poptAddItem(poptContext con, poptIte
const char * poptBadOption(poptContext con, unsigned int flags)
{
struct optionStackEntry * os = NULL;
+ const char *badOpt = NULL;
- if (con != NULL)
- os = (flags & POPT_BADOPTION_NOALIAS) ? con->optionStack : con->os;
+ if (con != NULL) {
+ /* Stupid hack to return something semi-meaningful from exec failure */
+ if (con->execFail) {
+ badOpt = con->execFail;
+ } else {
+ os = (flags & POPT_BADOPTION_NOALIAS) ? con->optionStack : con->os;
+ badOpt = os->argv[os->next - 1];
+ }
+ }
- return (os != NULL && os->argv != NULL ? os->argv[os->next - 1] : NULL);
+ return badOpt;
}
const char * poptStrerror(const int error)
diff -up popt-1.13/poptint.h.execfail popt-1.13/poptint.h
--- popt-1.13/poptint.h.execfail 2012-08-02 16:08:34.000000000 +0300
+++ popt-1.13/poptint.h 2012-08-02 16:12:35.796500122 +0300
@@ -78,6 +78,7 @@ struct poptContext_s {
/*@owned@*/ /*@null@*/
poptItem execs;
int numExecs;
+ char * execFail;
/*@only@*/ /*@null@*/
const char ** finalArgv;
int finalArgvCount;

8
popt.spec
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@ -1,7 +1,7 @@
Summary: C library for parsing command line parameters
Name: popt
Version: 1.13
Release: 11%{?dist}
Release: 12%{?dist}
License: MIT
Group: System Environment/Libraries
URL: http://www.rpm5.org/
@ -9,6 +9,7 @@ Source: http://www.rpm5.org/files/%{name}/%{name}-%{version}.tar.gz
Patch0: popt-1.13-multilib.patch
Patch1: popt-1.13-popt_fprintf.patch
Patch2: popt-1.13-alias-equal-arg.patch
Patch3: popt-1.13-execfail.patch
BuildRequires: gettext, doxygen, graphviz
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@ -46,6 +47,7 @@ Install it if you need to link statically with libpopt.
%patch0 -p1 -b .multilib
%patch1 -p1 -b .popt_fprintf
%patch2 -p1 -b .alias-equal-arg
%patch3 -p1 -b .execfail
%build
%configure --libdir=/%{_lib}
@ -94,6 +96,10 @@ rm -rf $RPM_BUILD_ROOT
%{_libdir}/libpopt.a
%changelog
* Thu Aug 02 2012 Panu Matilainen <pmatilai@redhat.com> - 1.13-12
- Hack poptBadOption() to return something semi-meaningful on exec alias
failures (#697435, #710267)
* Sat Jul 21 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.13-11
- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild