Modules fixes for v5.4-rc5
- Revert __ksymtab_$namespace.$symbol naming scheme back to __ksymtab_$symbol, as it was causing issues with depmod. Instead, have modpost extract a symbol's namespace from __kstrtabns and __ksymtab_strings. - Fix `make nsdeps` for out of tree kernel builds (make O=...) caused by unescaped '/'. Use a different sed delimiter to avoid this problem. Signed-off-by: Jessica Yu <jeyu@kernel.org> -----BEGIN PGP SIGNATURE----- iQIcBAABCgAGBQJdsxgtAAoJEMBFfjjOO8Fy4UcP/A7IynJnayv1WYYf9OpwsRjg YDFaxqcvB9ynnv7hfHA1UK6c8FJZFEBzFc4fOvatuNOfp8Hj8dhX1Hq0nVJNDEoD ma3hgPIT2pjUstBd9exXFY6SJT3hoPHwmKP6U1ah8NXVkudpr9KjPoKRd4+dDCpG ZdU6Ff0oDhxmneyqcNJZtXMq9ISl2nWaMuAMet54+NmWySfxoDUd4K4+xTMoiQ05 dPQJUEqzVAM9MRazJR/Kbi0st5b4Y4XnvJMWkN2PDgRDWJg11cS2RMb5Rkq1Nt0X hW317kH05/r+81BsjFPbVYcx64gJMmoiwBBWOMepPm5VWRJ2Cy3DiH+Vj6d49qNl c80m1rHmbJIS0GV9PslJyZncRw0eyweT3KQE3wGfVKJFzizxN08sZnW3gpnAVzix 2cB4x0dSSDEZJbB5jzD/dDoRYPIKTeB3geWsWUXY6ILfou22vjT91/A615DwJUjj 1rnmuUsc5fawA6R8P8L1mVQQQ9CMgPnK5GBOzuQdrVZmO8FDAe8h/A/nhKBbBWSE HdCe1TSfgkun+jaUqnzg/3tFGkXk1xcYKL2zfwUCTikjX03b/dixct9FRSll6LkZ s6tMQ861l01io15mCCwjiDTcxim+Rlvt7yhG69DLERBMDMOKVL5/fNADbeJQCVg3 PVBW6Bx9h5wWQqyHQ7PY =Ge3Z -----END PGP SIGNATURE----- Merge tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull modules fixes from Jessica Yu: - Revert __ksymtab_$namespace.$symbol naming scheme back to __ksymtab_$symbol, as it was causing issues with depmod. Instead, have modpost extract a symbol's namespace from __kstrtabns and __ksymtab_strings. - Fix `make nsdeps` for out of tree kernel builds (make O=...) caused by unescaped '/'. Use a different sed delimiter to avoid this problem. * tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: scripts/nsdeps: use alternative sed delimiter symbol namespaces: revert to previous __ksymtab name scheme modpost: make updating the symbol namespace explicit modpost: delegate updating namespaces to separate function
This commit is contained in:
commit
9e2dd2ca85
@ -18,8 +18,6 @@ extern struct module __this_module;
|
|||||||
#define THIS_MODULE ((struct module *)0)
|
#define THIS_MODULE ((struct module *)0)
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#define NS_SEPARATOR "."
|
|
||||||
|
|
||||||
#ifdef CONFIG_MODVERSIONS
|
#ifdef CONFIG_MODVERSIONS
|
||||||
/* Mark the CRC weak since genksyms apparently decides not to
|
/* Mark the CRC weak since genksyms apparently decides not to
|
||||||
* generate a checksums for some symbols */
|
* generate a checksums for some symbols */
|
||||||
@ -48,11 +46,11 @@ extern struct module __this_module;
|
|||||||
* absolute relocations that require runtime processing on relocatable
|
* absolute relocations that require runtime processing on relocatable
|
||||||
* kernels.
|
* kernels.
|
||||||
*/
|
*/
|
||||||
#define __KSYMTAB_ENTRY_NS(sym, sec, ns) \
|
#define __KSYMTAB_ENTRY_NS(sym, sec) \
|
||||||
__ADDRESSABLE(sym) \
|
__ADDRESSABLE(sym) \
|
||||||
asm(" .section \"___ksymtab" sec "+" #sym "\", \"a\" \n" \
|
asm(" .section \"___ksymtab" sec "+" #sym "\", \"a\" \n" \
|
||||||
" .balign 4 \n" \
|
" .balign 4 \n" \
|
||||||
"__ksymtab_" #ns NS_SEPARATOR #sym ": \n" \
|
"__ksymtab_" #sym ": \n" \
|
||||||
" .long " #sym "- . \n" \
|
" .long " #sym "- . \n" \
|
||||||
" .long __kstrtab_" #sym "- . \n" \
|
" .long __kstrtab_" #sym "- . \n" \
|
||||||
" .long __kstrtabns_" #sym "- . \n" \
|
" .long __kstrtabns_" #sym "- . \n" \
|
||||||
@ -74,16 +72,14 @@ struct kernel_symbol {
|
|||||||
int namespace_offset;
|
int namespace_offset;
|
||||||
};
|
};
|
||||||
#else
|
#else
|
||||||
#define __KSYMTAB_ENTRY_NS(sym, sec, ns) \
|
#define __KSYMTAB_ENTRY_NS(sym, sec) \
|
||||||
static const struct kernel_symbol __ksymtab_##sym##__##ns \
|
static const struct kernel_symbol __ksymtab_##sym \
|
||||||
asm("__ksymtab_" #ns NS_SEPARATOR #sym) \
|
|
||||||
__attribute__((section("___ksymtab" sec "+" #sym), used)) \
|
__attribute__((section("___ksymtab" sec "+" #sym), used)) \
|
||||||
__aligned(sizeof(void *)) \
|
__aligned(sizeof(void *)) \
|
||||||
= { (unsigned long)&sym, __kstrtab_##sym, __kstrtabns_##sym }
|
= { (unsigned long)&sym, __kstrtab_##sym, __kstrtabns_##sym }
|
||||||
|
|
||||||
#define __KSYMTAB_ENTRY(sym, sec) \
|
#define __KSYMTAB_ENTRY(sym, sec) \
|
||||||
static const struct kernel_symbol __ksymtab_##sym \
|
static const struct kernel_symbol __ksymtab_##sym \
|
||||||
asm("__ksymtab_" #sym) \
|
|
||||||
__attribute__((section("___ksymtab" sec "+" #sym), used)) \
|
__attribute__((section("___ksymtab" sec "+" #sym), used)) \
|
||||||
__aligned(sizeof(void *)) \
|
__aligned(sizeof(void *)) \
|
||||||
= { (unsigned long)&sym, __kstrtab_##sym, NULL }
|
= { (unsigned long)&sym, __kstrtab_##sym, NULL }
|
||||||
@ -115,7 +111,7 @@ struct kernel_symbol {
|
|||||||
static const char __kstrtabns_##sym[] \
|
static const char __kstrtabns_##sym[] \
|
||||||
__attribute__((section("__ksymtab_strings"), used, aligned(1))) \
|
__attribute__((section("__ksymtab_strings"), used, aligned(1))) \
|
||||||
= #ns; \
|
= #ns; \
|
||||||
__KSYMTAB_ENTRY_NS(sym, sec, ns)
|
__KSYMTAB_ENTRY_NS(sym, sec)
|
||||||
|
|
||||||
#define ___EXPORT_SYMBOL(sym, sec) \
|
#define ___EXPORT_SYMBOL(sym, sec) \
|
||||||
___export_symbol_common(sym, sec); \
|
___export_symbol_common(sym, sec); \
|
||||||
|
@ -348,26 +348,38 @@ static enum export export_from_sec(struct elf_info *elf, unsigned int sec)
|
|||||||
return export_unknown;
|
return export_unknown;
|
||||||
}
|
}
|
||||||
|
|
||||||
static char *sym_extract_namespace(const char **symname)
|
static const char *namespace_from_kstrtabns(struct elf_info *info,
|
||||||
|
Elf_Sym *kstrtabns)
|
||||||
{
|
{
|
||||||
char *namespace = NULL;
|
char *value = info->ksymtab_strings + kstrtabns->st_value;
|
||||||
char *ns_separator;
|
return value[0] ? value : NULL;
|
||||||
|
}
|
||||||
|
|
||||||
ns_separator = strchr(*symname, '.');
|
static void sym_update_namespace(const char *symname, const char *namespace)
|
||||||
if (ns_separator) {
|
{
|
||||||
namespace = NOFAIL(strndup(*symname, ns_separator - *symname));
|
struct symbol *s = find_symbol(symname);
|
||||||
*symname = ns_separator + 1;
|
|
||||||
|
/*
|
||||||
|
* That symbol should have been created earlier and thus this is
|
||||||
|
* actually an assertion.
|
||||||
|
*/
|
||||||
|
if (!s) {
|
||||||
|
merror("Could not update namespace(%s) for symbol %s\n",
|
||||||
|
namespace, symname);
|
||||||
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
return namespace;
|
free(s->namespace);
|
||||||
|
s->namespace =
|
||||||
|
namespace && namespace[0] ? NOFAIL(strdup(namespace)) : NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Add an exported symbol - it may have already been added without a
|
* Add an exported symbol - it may have already been added without a
|
||||||
* CRC, in this case just update the CRC
|
* CRC, in this case just update the CRC
|
||||||
**/
|
**/
|
||||||
static struct symbol *sym_add_exported(const char *name, const char *namespace,
|
static struct symbol *sym_add_exported(const char *name, struct module *mod,
|
||||||
struct module *mod, enum export export)
|
enum export export)
|
||||||
{
|
{
|
||||||
struct symbol *s = find_symbol(name);
|
struct symbol *s = find_symbol(name);
|
||||||
|
|
||||||
@ -383,8 +395,6 @@ static struct symbol *sym_add_exported(const char *name, const char *namespace,
|
|||||||
s->module = mod;
|
s->module = mod;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
free(s->namespace);
|
|
||||||
s->namespace = namespace ? strdup(namespace) : NULL;
|
|
||||||
s->preloaded = 0;
|
s->preloaded = 0;
|
||||||
s->vmlinux = is_vmlinux(mod->name);
|
s->vmlinux = is_vmlinux(mod->name);
|
||||||
s->kernel = 0;
|
s->kernel = 0;
|
||||||
@ -583,6 +593,10 @@ static int parse_elf(struct elf_info *info, const char *filename)
|
|||||||
info->export_unused_gpl_sec = i;
|
info->export_unused_gpl_sec = i;
|
||||||
else if (strcmp(secname, "__ksymtab_gpl_future") == 0)
|
else if (strcmp(secname, "__ksymtab_gpl_future") == 0)
|
||||||
info->export_gpl_future_sec = i;
|
info->export_gpl_future_sec = i;
|
||||||
|
else if (strcmp(secname, "__ksymtab_strings") == 0)
|
||||||
|
info->ksymtab_strings = (void *)hdr +
|
||||||
|
sechdrs[i].sh_offset -
|
||||||
|
sechdrs[i].sh_addr;
|
||||||
|
|
||||||
if (sechdrs[i].sh_type == SHT_SYMTAB) {
|
if (sechdrs[i].sh_type == SHT_SYMTAB) {
|
||||||
unsigned int sh_link_idx;
|
unsigned int sh_link_idx;
|
||||||
@ -672,7 +686,6 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
|
|||||||
enum export export;
|
enum export export;
|
||||||
bool is_crc = false;
|
bool is_crc = false;
|
||||||
const char *name;
|
const char *name;
|
||||||
char *namespace;
|
|
||||||
|
|
||||||
if ((!is_vmlinux(mod->name) || mod->is_dot_o) &&
|
if ((!is_vmlinux(mod->name) || mod->is_dot_o) &&
|
||||||
strstarts(symname, "__ksymtab"))
|
strstarts(symname, "__ksymtab"))
|
||||||
@ -745,9 +758,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
|
|||||||
/* All exported symbols */
|
/* All exported symbols */
|
||||||
if (strstarts(symname, "__ksymtab_")) {
|
if (strstarts(symname, "__ksymtab_")) {
|
||||||
name = symname + strlen("__ksymtab_");
|
name = symname + strlen("__ksymtab_");
|
||||||
namespace = sym_extract_namespace(&name);
|
sym_add_exported(name, mod, export);
|
||||||
sym_add_exported(name, namespace, mod, export);
|
|
||||||
free(namespace);
|
|
||||||
}
|
}
|
||||||
if (strcmp(symname, "init_module") == 0)
|
if (strcmp(symname, "init_module") == 0)
|
||||||
mod->has_init = 1;
|
mod->has_init = 1;
|
||||||
@ -2043,6 +2054,16 @@ static void read_symbols(const char *modname)
|
|||||||
handle_moddevtable(mod, &info, sym, symname);
|
handle_moddevtable(mod, &info, sym, symname);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Apply symbol namespaces from __kstrtabns_<symbol> entries. */
|
||||||
|
for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
|
||||||
|
symname = remove_dot(info.strtab + sym->st_name);
|
||||||
|
|
||||||
|
if (strstarts(symname, "__kstrtabns_"))
|
||||||
|
sym_update_namespace(symname + strlen("__kstrtabns_"),
|
||||||
|
namespace_from_kstrtabns(&info,
|
||||||
|
sym));
|
||||||
|
}
|
||||||
|
|
||||||
// check for static EXPORT_SYMBOL_* functions && global vars
|
// check for static EXPORT_SYMBOL_* functions && global vars
|
||||||
for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
|
for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
|
||||||
unsigned char bind = ELF_ST_BIND(sym->st_info);
|
unsigned char bind = ELF_ST_BIND(sym->st_info);
|
||||||
@ -2196,7 +2217,7 @@ static int check_exports(struct module *mod)
|
|||||||
else
|
else
|
||||||
basename = mod->name;
|
basename = mod->name;
|
||||||
|
|
||||||
if (exp->namespace && exp->namespace[0]) {
|
if (exp->namespace) {
|
||||||
add_namespace(&mod->required_namespaces,
|
add_namespace(&mod->required_namespaces,
|
||||||
exp->namespace);
|
exp->namespace);
|
||||||
|
|
||||||
@ -2454,12 +2475,12 @@ static void read_dump(const char *fname, unsigned int kernel)
|
|||||||
mod = new_module(modname);
|
mod = new_module(modname);
|
||||||
mod->skip = 1;
|
mod->skip = 1;
|
||||||
}
|
}
|
||||||
s = sym_add_exported(symname, namespace, mod,
|
s = sym_add_exported(symname, mod, export_no(export));
|
||||||
export_no(export));
|
|
||||||
s->kernel = kernel;
|
s->kernel = kernel;
|
||||||
s->preloaded = 1;
|
s->preloaded = 1;
|
||||||
s->is_static = 0;
|
s->is_static = 0;
|
||||||
sym_update_crc(symname, mod, crc, export_no(export));
|
sym_update_crc(symname, mod, crc, export_no(export));
|
||||||
|
sym_update_namespace(symname, namespace);
|
||||||
}
|
}
|
||||||
release_file(file, size);
|
release_file(file, size);
|
||||||
return;
|
return;
|
||||||
|
@ -143,6 +143,7 @@ struct elf_info {
|
|||||||
Elf_Section export_gpl_sec;
|
Elf_Section export_gpl_sec;
|
||||||
Elf_Section export_unused_gpl_sec;
|
Elf_Section export_unused_gpl_sec;
|
||||||
Elf_Section export_gpl_future_sec;
|
Elf_Section export_gpl_future_sec;
|
||||||
|
char *ksymtab_strings;
|
||||||
char *strtab;
|
char *strtab;
|
||||||
char *modinfo;
|
char *modinfo;
|
||||||
unsigned int modinfo_len;
|
unsigned int modinfo_len;
|
||||||
|
@ -33,7 +33,7 @@ generate_deps() {
|
|||||||
if [ ! -f "$ns_deps_file" ]; then return; fi
|
if [ ! -f "$ns_deps_file" ]; then return; fi
|
||||||
local mod_source_files=`cat $mod_file | sed -n 1p \
|
local mod_source_files=`cat $mod_file | sed -n 1p \
|
||||||
| sed -e 's/\.o/\.c/g' \
|
| sed -e 's/\.o/\.c/g' \
|
||||||
| sed "s/[^ ]* */${srctree}\/&/g"`
|
| sed "s|[^ ]* *|${srctree}/&|g"`
|
||||||
for ns in `cat $ns_deps_file`; do
|
for ns in `cat $ns_deps_file`; do
|
||||||
echo "Adding namespace $ns to module $mod_name (if needed)."
|
echo "Adding namespace $ns to module $mod_name (if needed)."
|
||||||
generate_deps_for_ns $ns $mod_source_files
|
generate_deps_for_ns $ns $mod_source_files
|
||||||
|
Loading…
Reference in New Issue
Block a user