73 lines
2.4 KiB
Diff
73 lines
2.4 KiB
Diff
|
commit 2aa0974d2573441bffd596b07bff8698b1f2f18c
|
||
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
||
|
|
Date: Fri Oct 20 14:29:50 2023 +0200
|
||
|
|
|
||
|
|
elf: ldconfig should skip temporary files created by package managers
|
||
|
|
|
||
|
|
This avoids crashes due to partially written files, after a package
|
||
|
|
update is interrupted.
|
||
|
|
|
||
|
|
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
||
|
|
|
||
|
|
Conflicts:
|
||
|
|
elf/ldconfig.c
|
||
|
|
(missing alloca removal downstream)
|
||
|
|
|
||
|
|
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
|
||
|
|
index be47ad8c2d7f89f3..f0c811001965cc46 100644
|
||
|
|
--- a/elf/ldconfig.c
|
||
|
|
+++ b/elf/ldconfig.c
|
||
|
|
@@ -778,6 +778,31 @@ struct dlib_entry
|
||
|
|
struct dlib_entry *next;
|
||
|
|
};
|
||
|
|
|
||
|
|
+/* Skip some temporary DSO files. These files may be partially written
|
||
|
|
+ and lead to ldconfig crashes when examined. */
|
||
|
|
+static bool
|
||
|
|
+skip_dso_based_on_name (const char *name, size_t len)
|
||
|
|
+{
|
||
|
|
+ /* Skip temporary files created by the prelink program. Files with
|
||
|
|
+ names like these are never really DSOs we want to look at. */
|
||
|
|
+ if (len >= sizeof (".#prelink#") - 1)
|
||
|
|
+ {
|
||
|
|
+ if (strcmp (name + len - sizeof (".#prelink#") + 1,
|
||
|
|
+ ".#prelink#") == 0)
|
||
|
|
+ return true;
|
||
|
|
+ if (len >= sizeof (".#prelink#.XXXXXX") - 1
|
||
|
|
+ && memcmp (name + len - sizeof (".#prelink#.XXXXXX")
|
||
|
|
+ + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0)
|
||
|
|
+ return true;
|
||
|
|
+ }
|
||
|
|
+ /* Skip temporary files created by RPM. */
|
||
|
|
+ if (memchr (name, len, ';') != NULL)
|
||
|
|
+ return true;
|
||
|
|
+ /* Skip temporary files created by dpkg. */
|
||
|
|
+ if (len > 4 && memcmp (name + len - 4, ".tmp", 4) == 0)
|
||
|
|
+ return true;
|
||
|
|
+ return false;
|
||
|
|
+}
|
||
|
|
|
||
|
|
static void
|
||
|
|
search_dir (const struct dir_entry *entry)
|
||
|
|
@@ -854,18 +879,8 @@ search_dir (const struct dir_entry *entry)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
size_t len = strlen (direntry->d_name);
|
||
|
|
- /* Skip temporary files created by the prelink program. Files with
|
||
|
|
- names like these are never really DSOs we want to look at. */
|
||
|
|
- if (len >= sizeof (".#prelink#") - 1)
|
||
|
|
- {
|
||
|
|
- if (strcmp (direntry->d_name + len - sizeof (".#prelink#") + 1,
|
||
|
|
- ".#prelink#") == 0)
|
||
|
|
- continue;
|
||
|
|
- if (len >= sizeof (".#prelink#.XXXXXX") - 1
|
||
|
|
- && memcmp (direntry->d_name + len - sizeof (".#prelink#.XXXXXX")
|
||
|
|
- + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0)
|
||
|
|
- continue;
|
||
|
|
- }
|
||
|
|
+ if (skip_dso_based_on_name (direntry->d_name, len))
|
||
|
|
+ continue;
|
||
|
|
len += strlen (entry->path) + 2;
|
||
|
|
if (len > file_name_len)
|
||
|
|
{
|