|
 |
5523e9 |
commit 73bd9636d0e76a4d255776b7733667198b9ef585
|
|
|
5523e9 |
Author: Panu Matilainen <pmatilai@redhat.com>
|
|
|
5523e9 |
Date: Mon Jan 7 15:52:43 2013 +0200
|
|
|
5523e9 |
|
|
|
5523e9 |
Filter ELF dependencies by name
|
|
|
5523e9 |
|
|
|
5523e9 |
- Instead of vain heuristics on DT_SONAME presence, filter out
|
|
|
5523e9 |
irregular sonames from all dependencies: linkable library names generally
|
|
|
5523e9 |
must contain ".so" and start with "lib" for the linker to find it at all,
|
|
|
5523e9 |
anything else is an exception of one kind or another (the prime exception
|
|
|
5523e9 |
of ld.so variants we handle here). This weeds out provides for most
|
|
|
5523e9 |
dlopen()'ed modules etc, and filtering both provides and requires
|
|
|
5523e9 |
by the same rules means we wont generate requires for things that wont be
|
|
|
5523e9 |
provided. Of course this also means we can omit things that are in
|
|
|
5523e9 |
DT_NEEDED, but these should be rare exceptions which the new
|
|
|
5523e9 |
--no-filter-soname switch is for.
|
|
|
5523e9 |
|
|
|
5523e9 |
diff --git a/tools/elfdeps.c b/tools/elfdeps.c
|
|
|
5523e9 |
index fc9a905..a0db9f7 100644
|
|
|
5523e9 |
--- a/tools/elfdeps.c
|
|
|
5523e9 |
+++ b/tools/elfdeps.c
|
|
|
5523e9 |
@@ -15,6 +15,7 @@
|
|
|
5523e9 |
int filter_private = 0;
|
|
|
5523e9 |
int soname_only = 0;
|
|
|
5523e9 |
int fake_soname = 1;
|
|
|
5523e9 |
+int filter_soname = 1;
|
|
|
5523e9 |
|
|
|
5523e9 |
typedef struct elfInfo_s {
|
|
|
5523e9 |
Elf *elf;
|
|
|
5523e9 |
@@ -36,6 +37,31 @@ static int skipPrivate(const char *s)
|
|
|
5523e9 |
return (filter_private && rstreq(s, "GLIBC_PRIVATE"));
|
|
|
5523e9 |
}
|
|
|
5523e9 |
|
|
|
5523e9 |
+/*
|
|
|
5523e9 |
+ * Rough soname sanity filtering: all sane soname's dependencies need to
|
|
|
5523e9 |
+ * contain ".so", and normal linkable libraries start with "lib",
|
|
|
5523e9 |
+ * everything else is an exception of some sort. The most notable
|
|
|
5523e9 |
+ * and common exception is the dynamic linker itself, which we allow
|
|
|
5523e9 |
+ * here, the rest can use --no-filter-soname.
|
|
|
5523e9 |
+ */
|
|
|
5523e9 |
+static int skipSoname(const char *soname)
|
|
|
5523e9 |
+{
|
|
|
5523e9 |
+ if (filter_soname) {
|
|
|
5523e9 |
+ if (!strstr(soname, ".so"))
|
|
|
5523e9 |
+ return 1;
|
|
|
5523e9 |
+
|
|
|
5523e9 |
+ if (rstreqn(soname, "ld.", 3) || rstreqn(soname, "ld-", 3))
|
|
|
5523e9 |
+ return 0;
|
|
|
5523e9 |
+
|
|
|
5523e9 |
+ if (rstreqn(soname, "lib", 3))
|
|
|
5523e9 |
+ return 0;
|
|
|
5523e9 |
+ else
|
|
|
5523e9 |
+ return 1;
|
|
|
5523e9 |
+ }
|
|
|
5523e9 |
+
|
|
|
5523e9 |
+ return 0;
|
|
|
5523e9 |
+}
|
|
|
5523e9 |
+
|
|
|
5523e9 |
static const char *mkmarker(GElf_Ehdr *ehdr)
|
|
|
5523e9 |
{
|
|
|
5523e9 |
const char *marker = NULL;
|
|
|
5523e9 |
@@ -58,6 +84,10 @@ static void addDep(ARGV_t *deps,
|
|
|
5523e9 |
const char *soname, const char *ver, const char *marker)
|
|
|
5523e9 |
{
|
|
|
5523e9 |
char *dep = NULL;
|
|
|
5523e9 |
+
|
|
|
5523e9 |
+ if (skipSoname(soname))
|
|
|
5523e9 |
+ return;
|
|
|
5523e9 |
+
|
|
|
5523e9 |
if (ver || marker) {
|
|
|
5523e9 |
rasprintf(&dep,
|
|
|
5523e9 |
"%s(%s)%s", soname, ver ? ver : "", marker ? marker : "");
|
|
|
5523e9 |
@@ -293,6 +323,7 @@ int main(int argc, char *argv[])
|
|
|
5523e9 |
{ "filter-private", 0, POPT_ARG_VAL, &filter_private, -1, NULL, NULL },
|
|
|
5523e9 |
{ "soname-only", 0, POPT_ARG_VAL, &soname_only, -1, NULL, NULL },
|
|
|
5523e9 |
{ "no-fake-soname", 0, POPT_ARG_VAL, &fake_soname, 0, NULL, NULL },
|
|
|
5523e9 |
+ { "no-filter-soname", 0, POPT_ARG_VAL, &filter_soname, 0, NULL, NULL },
|
|
|
5523e9 |
POPT_AUTOHELP
|
|
|
5523e9 |
POPT_TABLEEND
|
|
|
5523e9 |
};
|