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- avoid assertion failure due to access permissions (#579476)

This commit is contained in:
Kamil Dudka 2010-04-05 23:53:06 +00:00
parent 9517481aff
commit 8440b32a33
2 changed files with 594 additions and 1 deletions
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586
findutils-4.5.7-bz579476.patch Normal file
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@ -0,0 +1,586 @@
ChangeLog | 74 ++++++++++++++++++++++++++++++++++++++++++++++++
NEWS | 1 +
find/defs.h | 12 ++++++-
find/find.c | 8 +++--
find/ftsfind.c | 53 ++++++++++++++++------------------
find/parser.c | 10 +++---
find/pred.c | 8 ++--
find/sharefile.c | 2 +-
find/tree.c | 1 +
find/util.c | 83 ++++++++++++++++++++++++++++++++++++++++++-----------
10 files changed, 191 insertions(+), 61 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index abe1993..8bcae9b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,77 @@
+ 2010-04-05 James Youngman <jay@gnu.org>
+
+ Don't issue an error message twice for the same target file.
+ * find/defs.h (struct state): New member,
+ already_issued_stat_error_msg, used to de-duplicate error
+ messages. If it is true, we already issued an error message for
+ the current target file.
+ Declare fatal_target_file_error, fatal_nontarget_file_error,
+ nonfatal_target_file_error, nonfatal_nontarget_file_error.
+ Between them, they replace fatal_file_error and
+ nonfatal_file_error. The *target_file_error versions are
+ de-duplicated and the nontarget_file_error_versions are not.
+ * find/util.c (nonfatal_nontarget_file_error): Implement.
+ (fatal_nontarget_file_error): Implement.
+ (nonfatal_target_file_error): Implement.
+ (fatal_target_file_error): Implement.
+ (fatal_file_error): Remove.
+ (nonfatal_file_error): Remove.
+ (error_severity): Define error_severity (moved from ftsfind.c)
+ (get_statinfo): Call nonfatal_target_file_error in order to avoid
+ a duplicate message. ALso call error_severity after a different
+ call to error to preserve the constraint that we exit with a
+ nonzero status if we issue a diagnostic.
+ (cleanup): Call nonfatal_nontarget_file_error instead of
+ nonfatal_file_error.
+ * find/tree.c (build_expression_tree): Initialise
+ state.already_issued_stat_error_msg.
+ * find/find.c (main): Initialise state.already_issued_stat_error_msg.
+ (wd_sanity_check): Call fatal_target_file_error instead of
+ fatal_file_error.
+ (chdir_back): Call fatal_nontarget_file_error instead of
+ fatal_file_error.
+ (process_path): Initialise state.already_issued_stat_error_msg.
+ * find/ftsfind.c (consider_visiting): Call
+ nonfatal_target_file_error instead of calling error directly.
+ (find): Call error_severity to ensure exit status is nonzero after
+ a call to error.
+ (main): Initialise state.already_issued_stat_error_msg.
+ (error_severity): Move to util.c.
+ * find/parser.c (collect_arg_stat_info): Call
+ fatal_target_file_error instead of fatal_file_error.
+ (parse_newerXY): Likewise.
+ (parse_samefile): Likewise.
+ (parse_samefile): Likewise.
+ (open_output_file): Call fatal_nontarget_file_error instead of
+ fatal_file_error.
+ * find/pred.c (checked_fprintf): Likewise.
+ (checked_print_quoted): Likewise.
+ (checked_fwrite): Likewise.
+ (checked_fflush): Likewise.
+ * find/sharefile.c (entry_free): Likewise.
+
+ Fix Savannah bug #29435: fd_is_cloexec does not work on Fedora
+ buildhosts.
+ Fix open_cloexec on hosts which ignore O_CLOEXEC (i.e. old kernels).
+ * lib/fdleak.c (o_cloexec_works): New function, detects whether
+ the open flag O_CLOEXEC has any effect.
+ (open_cloexec): Call o_cloexec_works, just once, to find out
+ whether O_CLOEXEC is effective. If not, set the close-on-exec
+ flag on fds by calling set_cloexec_flag.
+ * NEWS: Mention this bugfix.
+
+2010-04-04 Martin von Gagern <Martin.vGagern@gmx.net>
+
+ Fix Savannah bug #27213: avoid failed assertions for
+ non-executable directories.
+ (consider_visiting): Continue (after issuing an error message)
+ even if ent->fts_info == FTS_NS.
+ * find/util.c (get_statinfo): If we cannot stat the file, issue a
+ diagnostic, but continue anyway.
+ * find/ftsfind.c (consider_visiting): Don't assert-fail if
+ ent->fts_info == FTS_NSOK. Don't assert-fail if state.type is
+ nonzero.
+
2010-04-04 James Youngman <jay@gnu.org>
Fix Savannah bug #29435: fd_is_cloexec does not work on Fedora
diff --git a/NEWS b/NEWS
index e171b87..3f81b88 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,7 @@ GNU findutils NEWS - User visible changes. -*- outline -*- (allout)
#29435: fd_is_cloexec does not work on Fedora buildhosts
+#27213: avoid failed assertions for non-executable directories.
* Major changes in release 4.5.7, 2010-04-03
diff --git a/find/defs.h b/find/defs.h
index 4ade8f4..b2e255a 100644
--- a/find/defs.h
+++ b/find/defs.h
@@ -504,11 +504,16 @@ extern boolean check_nofollow(void);
void complete_pending_execs(struct predicate *p);
void complete_pending_execdirs(int dir_fd); /* Passing dir_fd is an unpleasant CodeSmell. */
const char *safely_quote_err_filename (int n, char const *arg);
-void fatal_file_error(const char *name) ATTRIBUTE_NORETURN;
-void nonfatal_file_error(const char *name);
+
+void fatal_target_file_error (int errno_value, const char *name) ATTRIBUTE_NORETURN;
+void fatal_nontarget_file_error (int errno_value, const char *name) ATTRIBUTE_NORETURN;
+void nonfatal_target_file_error (int erron_value, const char *name);
+void nonfatal_nontarget_file_error (int erron_value, const char *name);
+
int process_leading_options PARAMS((int argc, char *argv[]));
void set_option_defaults PARAMS((struct options *p));
+void error_severity PARAMS((int level));
#if 0
#define apply_predicate(pathname, stat_buf_ptr, node) \
@@ -669,6 +674,9 @@ struct state
/* Shared files, opened via the interface in sharefile.h. */
sharefile_handle shared_files;
+
+ /* Avoid multiple error messages for the same file. */
+ boolean already_issued_stat_error_msg;
};
/* finddata.c */
diff --git a/find/find.c b/find/find.c
index 336e120..e058814 100644
--- a/find/find.c
+++ b/find/find.c
@@ -135,6 +135,7 @@ main (int argc, char **argv)
remember_non_cloexec_fds ();
}
+ state.already_issued_stat_error_msg = false;
state.shared_files = sharefile_init ("w");
if (NULL == state.shared_files)
{
@@ -472,7 +473,7 @@ wd_sanity_check (const char *thing_to_stat,
set_stat_placeholders (newinfo);
if ((*options.xstat) (current_dir, newinfo) != 0)
- fatal_file_error (thing_to_stat);
+ fatal_target_file_error (errno, thing_to_stat);
if (old_dev != newinfo->st_dev)
{
@@ -943,7 +944,7 @@ chdir_back (void)
#endif
if (chdir (starting_dir) != 0)
- fatal_file_error (starting_dir);
+ fatal_nontarget_file_error (errno, starting_dir);
wd_sanity_check (starting_dir,
program_name,
@@ -962,7 +963,7 @@ chdir_back (void)
if (fchdir (starting_desc) != 0)
{
- fatal_file_error (starting_dir);
+ fatal_nontarget_file_error (errno, starting_dir);
}
}
}
@@ -1183,6 +1184,7 @@ process_path (char *pathname, char *name, boolean leaf, char *parent,
state.type = 0;
state.have_stat = false;
state.have_type = false;
+ state.already_issued_stat_error_msg = false;
if (!digest_mode (&mode, pathname, name, &stat_buf, leaf))
return 0;
diff --git a/find/ftsfind.c b/find/ftsfind.c
index b3a08f9..692d9f5 100644
--- a/find/ftsfind.c
+++ b/find/ftsfind.c
@@ -173,18 +173,6 @@ inside_dir (int dir_fd)
static void init_mounted_dev_list (void);
#endif
-/* We have encountered an error which should affect the exit status.
- * This is normally used to change the exit status from 0 to 1.
- * However, if the exit status is already 2 for example, we don't want to
- * reduce it to 1.
- */
-static void
-error_severity (int level)
-{
- if (state.exit_status < level)
- state.exit_status = level;
-}
-
#define STRINGIFY(X) #X
#define HANDLECASE(N) case N: return #N;
@@ -371,9 +359,6 @@ show_outstanding_execdirs (FILE *fp)
/* No debug output is wanted. */
}
}
-
-
-
static void
consider_visiting (FTS *p, FTSENT *ent)
@@ -410,15 +395,13 @@ consider_visiting (FTS *p, FTSENT *ent)
if (ent->fts_info == FTS_ERR
|| ent->fts_info == FTS_DNR)
{
- error (0, ent->fts_errno, "%s",
- safely_quote_err_filename (0, ent->fts_path));
- error_severity (1);
+ nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
return;
}
else if (ent->fts_info == FTS_DC)
{
issue_loop_warning (ent);
- error_severity (1);
+ error_severity (EXIT_FAILURE);
return;
}
else if (ent->fts_info == FTS_SLNONE)
@@ -432,8 +415,7 @@ consider_visiting (FTS *p, FTSENT *ent)
*/
if (symlink_loop (ent->fts_accpath))
{
- error (0, ELOOP, "%s", safely_quote_err_filename (0, ent->fts_path));
- error_severity (1);
+ nonfatal_target_file_error (ELOOP, ent->fts_path);
return;
}
}
@@ -442,9 +424,7 @@ consider_visiting (FTS *p, FTSENT *ent)
if (ent->fts_level == 0)
{
/* e.g., nonexistent starting point */
- error (0, ent->fts_errno, "%s",
- safely_quote_err_filename (0, ent->fts_path));
- error_severity (1); /* remember problem */
+ nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
return;
}
else
@@ -454,11 +434,24 @@ consider_visiting (FTS *p, FTSENT *ent)
*/
if (symlink_loop (ent->fts_accpath))
{
- error (0, ELOOP, "%s",
- safely_quote_err_filename (0, ent->fts_path));
- error_severity (1);
+ nonfatal_target_file_error (ELOOP, ent->fts_path);
return;
}
+ else
+ {
+ nonfatal_target_file_error (ent->fts_errno, ent->fts_path);
+ /* Continue despite the error, as file name without stat info
+ * might be better than not even processing the file name. This
+ * can lead to repeated error messages later on, though, if a
+ * predicate requires stat information.
+ *
+ * Not printing an error message here would be even more wrong,
+ * though, as this could cause the contents of a directory to be
+ * silently ignored, as the directory wouldn't be identified as
+ * such.
+ */
+ }
+
}
}
@@ -467,7 +460,7 @@ consider_visiting (FTS *p, FTSENT *ent)
|| ent->fts_info == FTS_NS /* e.g. symlink loop */)
{
assert (!state.have_stat);
- assert (ent->fts_info == FTS_NSOK || state.type != 0);
+ assert (ent->fts_info == FTS_NSOK || state.type == 0);
mode = state.type;
}
else
@@ -621,11 +614,13 @@ find (char *arg)
{
error (0, errno, _("cannot search %s"),
safely_quote_err_filename (0, arg));
+ error_severity (EXIT_FAILURE);
}
else
{
while ( (ent=fts_read (p)) != NULL )
{
+ state.already_issued_stat_error_msg = false;
state.have_stat = false;
state.have_type = !!ent->fts_statp->st_mode;
state.type = state.have_type ? ent->fts_statp->st_mode : 0;
@@ -640,6 +635,7 @@ find (char *arg)
error (0, errno,
_("failed to restore working directory after searching %s"),
arg);
+ error_severity (EXIT_FAILURE);
return false;
}
p = NULL;
@@ -689,6 +685,7 @@ main (int argc, char **argv)
else
set_program_name ("find");
+ state.already_issued_stat_error_msg = false;
state.exit_status = 0;
state.execdirs_outstanding = false;
state.cwd_dir_fd = AT_FDCWD;
diff --git a/find/parser.c b/find/parser.c
index 8238671..8668ce4 100644
--- a/find/parser.c
+++ b/find/parser.c
@@ -744,7 +744,7 @@ collect_arg_stat_info (char **argv, int *arg_ptr, struct stat *p,
}
else
{
- fatal_file_error (filename);
+ fatal_target_file_error (errno, filename);
}
}
else
@@ -1685,7 +1685,7 @@ parse_newerXY (const struct parser_table* entry, char **argv, int *arg_ptr)
/* Stat the named file. */
set_stat_placeholders (&stat_newer);
if ((*options.xstat) (argv[*arg_ptr], &stat_newer))
- fatal_file_error (argv[*arg_ptr]);
+ fatal_target_file_error (errno, argv[*arg_ptr]);
if (!get_stat_Ytime (&stat_newer, y, &our_pred->args.reftime.ts))
{
@@ -2425,7 +2425,7 @@ parse_samefile (const struct parser_table* entry, char **argv, int *arg_ptr)
*/
if (0 != fstat (fd, &fst))
{
- fatal_file_error (argv[*arg_ptr]);
+ fatal_target_file_error (errno, argv[*arg_ptr]);
}
else
{
@@ -2435,7 +2435,7 @@ parse_samefile (const struct parser_table* entry, char **argv, int *arg_ptr)
* destination of the link, not the link itself.
*/
if ((*options.xstat) (argv[*arg_ptr], &st))
- fatal_file_error (argv[*arg_ptr]);
+ fatal_target_file_error (errno, argv[*arg_ptr]);
if ((options.symlink_handling == SYMLINK_NEVER_DEREF)
&& (!options.open_nofollow_available))
@@ -3799,7 +3799,7 @@ open_output_file (const char *path, struct format_val *p)
if (p->stream == NULL)
{
- fatal_file_error (path);
+ fatal_nontarget_file_error (errno, path);
}
}
diff --git a/find/pred.c b/find/pred.c
index cb61ed2..44db6a6 100644
--- a/find/pred.c
+++ b/find/pred.c
@@ -696,7 +696,7 @@ checked_fprintf (struct format_val *dest, const char *fmt, ...)
va_start (ap, fmt);
rv = vfprintf (dest->stream, fmt, ap);
if (rv < 0)
- nonfatal_file_error (dest->filename);
+ nonfatal_nontarget_file_error (errno, dest->filename);
}
@@ -707,7 +707,7 @@ checked_print_quoted (struct format_val *dest,
int rv = print_quoted (dest->stream, dest->quote_opts, dest->dest_is_tty,
format, s);
if (rv < 0)
- nonfatal_file_error (dest->filename);
+ nonfatal_nontarget_file_error (errno, dest->filename);
}
@@ -716,7 +716,7 @@ checked_fwrite (void *p, size_t siz, size_t nmemb, struct format_val *dest)
{
int items_written = fwrite (p, siz, nmemb, dest->stream);
if (items_written < nmemb)
- nonfatal_file_error (dest->filename);
+ nonfatal_nontarget_file_error (errno, dest->filename);
}
static void
@@ -724,7 +724,7 @@ checked_fflush (struct format_val *dest)
{
if (0 != fflush (dest->stream))
{
- nonfatal_file_error (dest->filename);
+ nonfatal_nontarget_file_error (errno, dest->filename);
}
}
diff --git a/find/sharefile.c b/find/sharefile.c
index 8e0f4cc..1442d7b 100644
--- a/find/sharefile.c
+++ b/find/sharefile.c
@@ -76,7 +76,7 @@ entry_free (void *pv)
if (p->fp)
{
if (0 != fclose (p->fp))
- fatal_file_error (p->name);
+ fatal_nontarget_file_error (errno, p->name);
}
free (p->name);
free (p);
diff --git a/find/tree.c b/find/tree.c
index 08f2f0a..d07b125 100644
--- a/find/tree.c
+++ b/find/tree.c
@@ -1283,6 +1283,7 @@ build_expression_tree (int argc, char *argv[], int end_of_leading_options)
/* Build the input order list. */
while (i < argc )
{
+ state.already_issued_stat_error_msg = false;
if (!looks_like_expression (argv[i], false))
{
error (0, 0, _("paths must precede expression: %s"), argv[i]);
diff --git a/find/util.c b/find/util.c
index 3761a61..a789131 100644
--- a/find/util.c
+++ b/find/util.c
@@ -210,15 +210,14 @@ get_statinfo (const char *pathname, const char *name, struct stat *p)
/* Savannah bug #16378. */
error (0, 0, _("WARNING: file %s appears to have mode 0000"),
quotearg_n_style (0, options.err_quoting_style, name));
+ error_severity (1);
}
}
else
{
if (!options.ignore_readdir_race || (errno != ENOENT) )
{
- error (0, errno, "%s",
- safely_quote_err_filename (0, pathname));
- state.exit_status = 1;
+ nonfatal_target_file_error (errno, pathname);
}
return -1;
}
@@ -272,6 +271,10 @@ get_info (const char *pathname,
int result = get_statinfo (pathname, state.rel_pathname, p);
if (result != 0)
{
+ return -1; /* failure. */
+ }
+ else
+ {
/* Verify some postconditions. We can't check st_mode for
non-zero-ness because of Savannah bug #16378 (which is
that broken NFS servers can return st_mode==0). */
@@ -283,10 +286,6 @@ get_info (const char *pathname,
{
assert (p->st_ino);
}
- return -1; /* failure. */
- }
- else
- {
return 0; /* success. */
}
}
@@ -486,7 +485,7 @@ cleanup (void)
}
if (fflush (stdout) == EOF)
- nonfatal_file_error ("standard output");
+ nonfatal_nontarget_file_error (errno, "standard output");
}
/* Savannah bug #16378 manifests as an assertion failure in pred_type()
@@ -1074,35 +1073,83 @@ safely_quote_err_filename (int n, char const *arg)
return quotearg_n_style (n, options.err_quoting_style, arg);
}
+/* We have encountered an error which should affect the exit status.
+ * This is normally used to change the exit status from 0 to 1.
+ * However, if the exit status is already 2 for example, we don't want to
+ * reduce it to 1.
+ */
+void
+error_severity (int level)
+{
+ if (state.exit_status < level)
+ state.exit_status = level;
+}
+
/* report_file_err
*/
static void
-report_file_err(int exitval, int errno_value, const char *name)
+report_file_err(int exitval, int errno_value,
+ boolean is_target_file, const char *name)
{
/* It is important that the errno value is passed in as a function
* argument before we call safely_quote_err_filename(), because otherwise
* we might find that safely_quote_err_filename() changes errno.
*/
- if (state.exit_status < 1)
- state.exit_status = 1;
-
- error (exitval, errno_value, "%s", safely_quote_err_filename (0, name));
+ if (!is_target_file || !state.already_issued_stat_error_msg)
+ {
+ error (exitval, errno_value, "%s", safely_quote_err_filename (0, name));
+ error_severity (1);
+ }
+ if (is_target_file)
+ {
+ state.already_issued_stat_error_msg = true;
+ }
}
-/* fatal_file_error
+/* nonfatal_target_file_error
*
*/
void
-fatal_file_error(const char *name)
+nonfatal_target_file_error (int errno_value, const char *name)
{
- report_file_err (1, errno, name);
+ report_file_err (0, errno_value, true, name);
+}
+
+/* fatal_target_file_error
+ *
+ * Report an error on a target file (i.e. a file we are searching).
+ * Such errors are only reported once per searched file.
+ *
+ */
+void
+fatal_target_file_error(int errno_value, const char *name)
+{
+ report_file_err (1, errno_value, true, name);
/*NOTREACHED*/
abort ();
}
+/* nonfatal_nontarget_file_error
+ *
+ */
void
-nonfatal_file_error (const char *name)
+nonfatal_nontarget_file_error (int errno_value, const char *name)
{
- report_file_err (0, errno, name);
+ report_file_err (0, errno_value, false, name);
}
+/* fatal_nontarget_file_error
+ *
+ */
+void
+fatal_nontarget_file_error(int errno_value, const char *name)
+{
+ /* We're going to exit fatally, so make sure we always isssue the error
+ * message, even if it will be duplicate. Motivation: otherwise it may
+ * not be clear what went wrong.
+ */
+ state.already_issued_stat_error_msg = false;
+ report_file_err (1, errno_value, false, name);
+ /*NOTREACHED*/
+ abort ();
+}

9
findutils.spec
View File

@ -1,7 +1,7 @@
Summary: The GNU versions of find utilities (find and xargs)
Name: findutils
Version: 4.5.7
Release: 3%{?dist}
Release: 4%{?dist}
Epoch: 1
License: GPLv3+
Group: Applications/File
@ -26,6 +26,9 @@ Patch4: findutils-4.5.7-warnings.patch
# upstream commit a44cece
Patch5: findutils-4.5.7-fdleak.patch
# rhbz #579476 (upstream bug #27213)
Patch6: findutils-4.5.7-bz579476.patch
Requires(post): /sbin/install-info
Requires(preun): /sbin/install-info
Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@ -53,6 +56,7 @@ useful for finding things on your system.
%patch3 -p1
%patch4 -p1
%patch5 -p1
%patch6 -p1
# needed because of findutils-4.4.0-no-locate.patch
aclocal -I gnulib/m4 -I m4
@ -110,6 +114,9 @@ rm -rf $RPM_BUILD_ROOT
%{_infodir}/find-maint.info.gz
%changelog
* Tue Apr 06 2010 Kamil Dudka <kdudka@redhat.com> - 1:4.5.7-4
- avoid assertion failure due to access permissions (#579476)
* Sun Apr 04 2010 Kamil Dudka <kdudka@redhat.com> - 1:4.5.7-3
- upstream bugfix http://savannah.gnu.org/bugs/?29435