module: sysfs cleanup
We change the sysfs functions to take struct load_info, and call them all in mod_sysfs_setup(). We also clean up the #ifdefs a little. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
parent
d913188c75
commit
8f6d037815
|
|
@ -1126,8 +1126,9 @@ static const struct kernel_symbol *resolve_symbol_wait(Elf_Shdr *sechdrs,
|
|||
* /sys/module/foo/sections stuff
|
||||
* J. Corbet <corbet@lwn.net>
|
||||
*/
|
||||
#if defined(CONFIG_KALLSYMS) && defined(CONFIG_SYSFS)
|
||||
#ifdef CONFIG_SYSFS
|
||||
|
||||
#ifdef CONFIG_KALLSYMS
|
||||
static inline bool sect_empty(const Elf_Shdr *sect)
|
||||
{
|
||||
return !(sect->sh_flags & SHF_ALLOC) || sect->sh_size == 0;
|
||||
|
|
@ -1164,8 +1165,7 @@ static void free_sect_attrs(struct module_sect_attrs *sect_attrs)
|
|||
kfree(sect_attrs);
|
||||
}
|
||||
|
||||
static void add_sect_attrs(struct module *mod, unsigned int nsect,
|
||||
char *secstrings, Elf_Shdr *sechdrs)
|
||||
static void add_sect_attrs(struct module *mod, const struct load_info *info)
|
||||
{
|
||||
unsigned int nloaded = 0, i, size[2];
|
||||
struct module_sect_attrs *sect_attrs;
|
||||
|
|
@ -1173,8 +1173,8 @@ static void add_sect_attrs(struct module *mod, unsigned int nsect,
|
|||
struct attribute **gattr;
|
||||
|
||||
/* Count loaded sections and allocate structures */
|
||||
for (i = 0; i < nsect; i++)
|
||||
if (!sect_empty(&sechdrs[i]))
|
||||
for (i = 0; i < info->hdr->e_shnum; i++)
|
||||
if (!sect_empty(&info->sechdrs[i]))
|
||||
nloaded++;
|
||||
size[0] = ALIGN(sizeof(*sect_attrs)
|
||||
+ nloaded * sizeof(sect_attrs->attrs[0]),
|
||||
|
|
@ -1191,11 +1191,12 @@ static void add_sect_attrs(struct module *mod, unsigned int nsect,
|
|||
sect_attrs->nsections = 0;
|
||||
sattr = §_attrs->attrs[0];
|
||||
gattr = §_attrs->grp.attrs[0];
|
||||
for (i = 0; i < nsect; i++) {
|
||||
if (sect_empty(&sechdrs[i]))
|
||||
for (i = 0; i < info->hdr->e_shnum; i++) {
|
||||
Elf_Shdr *sec = &info->sechdrs[i];
|
||||
if (sect_empty(sec))
|
||||
continue;
|
||||
sattr->address = sechdrs[i].sh_addr;
|
||||
sattr->name = kstrdup(secstrings + sechdrs[i].sh_name,
|
||||
sattr->address = sec->sh_addr;
|
||||
sattr->name = kstrdup(info->secstrings + sec->sh_name,
|
||||
GFP_KERNEL);
|
||||
if (sattr->name == NULL)
|
||||
goto out;
|
||||
|
|
@ -1263,8 +1264,7 @@ static void free_notes_attrs(struct module_notes_attrs *notes_attrs,
|
|||
kfree(notes_attrs);
|
||||
}
|
||||
|
||||
static void add_notes_attrs(struct module *mod, unsigned int nsect,
|
||||
char *secstrings, Elf_Shdr *sechdrs)
|
||||
static void add_notes_attrs(struct module *mod, const struct load_info *info)
|
||||
{
|
||||
unsigned int notes, loaded, i;
|
||||
struct module_notes_attrs *notes_attrs;
|
||||
|
|
@ -1276,9 +1276,9 @@ static void add_notes_attrs(struct module *mod, unsigned int nsect,
|
|||
|
||||
/* Count notes sections and allocate structures. */
|
||||
notes = 0;
|
||||
for (i = 0; i < nsect; i++)
|
||||
if (!sect_empty(&sechdrs[i]) &&
|
||||
(sechdrs[i].sh_type == SHT_NOTE))
|
||||
for (i = 0; i < info->hdr->e_shnum; i++)
|
||||
if (!sect_empty(&info->sechdrs[i]) &&
|
||||
(info->sechdrs[i].sh_type == SHT_NOTE))
|
||||
++notes;
|
||||
|
||||
if (notes == 0)
|
||||
|
|
@ -1292,15 +1292,15 @@ static void add_notes_attrs(struct module *mod, unsigned int nsect,
|
|||
|
||||
notes_attrs->notes = notes;
|
||||
nattr = ¬es_attrs->attrs[0];
|
||||
for (loaded = i = 0; i < nsect; ++i) {
|
||||
if (sect_empty(&sechdrs[i]))
|
||||
for (loaded = i = 0; i < info->hdr->e_shnum; ++i) {
|
||||
if (sect_empty(&info->sechdrs[i]))
|
||||
continue;
|
||||
if (sechdrs[i].sh_type == SHT_NOTE) {
|
||||
if (info->sechdrs[i].sh_type == SHT_NOTE) {
|
||||
sysfs_bin_attr_init(nattr);
|
||||
nattr->attr.name = mod->sect_attrs->attrs[loaded].name;
|
||||
nattr->attr.mode = S_IRUGO;
|
||||
nattr->size = sechdrs[i].sh_size;
|
||||
nattr->private = (void *) sechdrs[i].sh_addr;
|
||||
nattr->size = info->sechdrs[i].sh_size;
|
||||
nattr->private = (void *) info->sechdrs[i].sh_addr;
|
||||
nattr->read = module_notes_read;
|
||||
++nattr;
|
||||
}
|
||||
|
|
@ -1331,8 +1331,8 @@ static void remove_notes_attrs(struct module *mod)
|
|||
|
||||
#else
|
||||
|
||||
static inline void add_sect_attrs(struct module *mod, unsigned int nsect,
|
||||
char *sectstrings, Elf_Shdr *sechdrs)
|
||||
static inline void add_sect_attrs(struct module *mod,
|
||||
const struct load_info *info)
|
||||
{
|
||||
}
|
||||
|
||||
|
|
@ -1340,17 +1340,16 @@ static inline void remove_sect_attrs(struct module *mod)
|
|||
{
|
||||
}
|
||||
|
||||
static inline void add_notes_attrs(struct module *mod, unsigned int nsect,
|
||||
char *sectstrings, Elf_Shdr *sechdrs)
|
||||
static inline void add_notes_attrs(struct module *mod,
|
||||
const struct load_info *info)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void remove_notes_attrs(struct module *mod)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
#endif /* CONFIG_KALLSYMS */
|
||||
|
||||
#ifdef CONFIG_SYSFS
|
||||
static void add_usage_links(struct module *mod)
|
||||
{
|
||||
#ifdef CONFIG_MODULE_UNLOAD
|
||||
|
|
@ -1455,6 +1454,7 @@ out:
|
|||
}
|
||||
|
||||
static int mod_sysfs_setup(struct module *mod,
|
||||
const struct load_info *info,
|
||||
struct kernel_param *kparam,
|
||||
unsigned int num_params)
|
||||
{
|
||||
|
|
@ -1479,6 +1479,8 @@ static int mod_sysfs_setup(struct module *mod,
|
|||
goto out_unreg_param;
|
||||
|
||||
add_usage_links(mod);
|
||||
add_sect_attrs(mod, info);
|
||||
add_notes_attrs(mod, info);
|
||||
|
||||
kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
|
||||
return 0;
|
||||
|
|
@ -1495,32 +1497,26 @@ out:
|
|||
|
||||
static void mod_sysfs_fini(struct module *mod)
|
||||
{
|
||||
remove_notes_attrs(mod);
|
||||
remove_sect_attrs(mod);
|
||||
kobject_put(&mod->mkobj.kobj);
|
||||
}
|
||||
|
||||
#else /* CONFIG_SYSFS */
|
||||
#else /* !CONFIG_SYSFS */
|
||||
|
||||
static inline int mod_sysfs_init(struct module *mod)
|
||||
static int mod_sysfs_init(struct module *mod)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int mod_sysfs_setup(struct module *mod,
|
||||
static int mod_sysfs_setup(struct module *mod,
|
||||
const struct load_info *info,
|
||||
struct kernel_param *kparam,
|
||||
unsigned int num_params)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int module_add_modinfo_attrs(struct module *mod)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void module_remove_modinfo_attrs(struct module *mod)
|
||||
{
|
||||
}
|
||||
|
||||
static void mod_sysfs_fini(struct module *mod)
|
||||
{
|
||||
}
|
||||
|
|
@ -1561,8 +1557,6 @@ static void free_module(struct module *mod)
|
|||
mutex_lock(&module_mutex);
|
||||
stop_machine(__unlink_module, mod, NULL);
|
||||
mutex_unlock(&module_mutex);
|
||||
remove_notes_attrs(mod);
|
||||
remove_sect_attrs(mod);
|
||||
mod_kobject_remove(mod);
|
||||
|
||||
/* Remove dynamic debug info */
|
||||
|
|
@ -2691,13 +2685,10 @@ static noinline struct module *load_module(void __user *umod,
|
|||
if (err < 0)
|
||||
goto unlink;
|
||||
|
||||
err = mod_sysfs_setup(mod, mod->kp, mod->num_kp);
|
||||
err = mod_sysfs_setup(mod, &info, mod->kp, mod->num_kp);
|
||||
if (err < 0)
|
||||
goto unlink;
|
||||
|
||||
add_sect_attrs(mod, info.hdr->e_shnum, info.secstrings, info.sechdrs);
|
||||
add_notes_attrs(mod, info.hdr->e_shnum, info.secstrings, info.sechdrs);
|
||||
|
||||
/* Get rid of temporary copy and strmap. */
|
||||
kfree(info.strmap);
|
||||
free_copy(&info);
|
||||
|
|
|
|||
Loading…
Reference in New Issue