-/* Rewritten by Rusty Russell, on the backs of many others...
+/*
Copyright (C) 2002 Richard Henderson
Copyright (C) 2001 Rusty Russell, 2002 Rusty Russell IBM.
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleloader.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/vermagic.h>
#include <linux/notifier.h>
+#include <linux/sched.h>
#include <linux/stop_machine.h>
#include <linux/device.h>
#include <linux/string.h>
-#include <linux/sched.h>
#include <linux/mutex.h>
+#include <linux/unwind.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <asm/cacheflush.h>
+#include <linux/license.h>
#if 0
#define DEBUGP printk
static DEFINE_MUTEX(module_mutex);
static LIST_HEAD(modules);
-static DEFINE_MUTEX(notify_mutex);
-static struct notifier_block * module_notify_list;
+static BLOCKING_NOTIFIER_HEAD(module_notify_list);
int register_module_notifier(struct notifier_block * nb)
{
- int err;
- mutex_lock(¬ify_mutex);
- err = notifier_chain_register(&module_notify_list, nb);
- mutex_unlock(¬ify_mutex);
- return err;
+ return blocking_notifier_chain_register(&module_notify_list, nb);
}
EXPORT_SYMBOL(register_module_notifier);
int unregister_module_notifier(struct notifier_block * nb)
{
- int err;
- mutex_lock(¬ify_mutex);
- err = notifier_chain_unregister(&module_notify_list, nb);
- mutex_unlock(¬ify_mutex);
- return err;
+ return blocking_notifier_chain_unregister(&module_notify_list, nb);
}
EXPORT_SYMBOL(unregister_module_notifier);
return try_module_get(mod);
}
+static inline void add_taint_module(struct module *mod, unsigned flag)
+{
+ add_taint(flag);
+ mod->taints |= flag;
+}
+
/* A thread that wants to hold a reference to a module only while it
* is running can call ths to safely exit.
* nfsd and lockd use this.
extern const struct kernel_symbol __stop___ksymtab_gpl[];
extern const struct kernel_symbol __start___ksymtab_gpl_future[];
extern const struct kernel_symbol __stop___ksymtab_gpl_future[];
+extern const struct kernel_symbol __start___ksymtab_unused[];
+extern const struct kernel_symbol __stop___ksymtab_unused[];
+extern const struct kernel_symbol __start___ksymtab_unused_gpl[];
+extern const struct kernel_symbol __stop___ksymtab_unused_gpl[];
+extern const struct kernel_symbol __start___ksymtab_gpl_future[];
+extern const struct kernel_symbol __stop___ksymtab_gpl_future[];
extern const unsigned long __start___kcrctab[];
extern const unsigned long __start___kcrctab_gpl[];
extern const unsigned long __start___kcrctab_gpl_future[];
+extern const unsigned long __start___kcrctab_unused[];
+extern const unsigned long __start___kcrctab_unused_gpl[];
#ifndef CONFIG_MODVERSIONS
#define symversion(base, idx) NULL
#else
-#define symversion(base, idx) ((base) ? ((base) + (idx)) : NULL)
+#define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL)
#endif
/* lookup symbol in given range of kernel_symbols */
return NULL;
}
+static void printk_unused_warning(const char *name)
+{
+ printk(KERN_WARNING "Symbol %s is marked as UNUSED, "
+ "however this module is using it.\n", name);
+ printk(KERN_WARNING "This symbol will go away in the future.\n");
+ printk(KERN_WARNING "Please evalute if this is the right api to use, "
+ "and if it really is, submit a report the linux kernel "
+ "mailinglist together with submitting your code for "
+ "inclusion.\n");
+}
+
/* Find a symbol, return value, crc and module which owns it */
static unsigned long __find_symbol(const char *name,
struct module **owner,
return ks->value;
}
+ ks = lookup_symbol(name, __start___ksymtab_unused,
+ __stop___ksymtab_unused);
+ if (ks) {
+ printk_unused_warning(name);
+ *crc = symversion(__start___kcrctab_unused,
+ (ks - __start___ksymtab_unused));
+ return ks->value;
+ }
+
+ if (gplok)
+ ks = lookup_symbol(name, __start___ksymtab_unused_gpl,
+ __stop___ksymtab_unused_gpl);
+ if (ks) {
+ printk_unused_warning(name);
+ *crc = symversion(__start___kcrctab_unused_gpl,
+ (ks - __start___ksymtab_unused_gpl));
+ return ks->value;
+ }
+
/* Now try modules. */
list_for_each_entry(mod, &modules, list) {
*owner = mod;
return ks->value;
}
}
+ ks = lookup_symbol(name, mod->unused_syms, mod->unused_syms + mod->num_unused_syms);
+ if (ks) {
+ printk_unused_warning(name);
+ *crc = symversion(mod->unused_crcs, (ks - mod->unused_syms));
+ return ks->value;
+ }
+
+ if (gplok) {
+ ks = lookup_symbol(name, mod->unused_gpl_syms,
+ mod->unused_gpl_syms + mod->num_unused_gpl_syms);
+ if (ks) {
+ printk_unused_warning(name);
+ *crc = symversion(mod->unused_gpl_crcs,
+ (ks - mod->unused_gpl_syms));
+ return ks->value;
+ }
+ }
ks = lookup_symbol(name, mod->gpl_future_syms,
(mod->gpl_future_syms +
mod->num_gpl_future_syms));
return 0;
}
-/* Find a symbol in this elf symbol table */
-static unsigned long find_local_symbol(Elf_Shdr *sechdrs,
- unsigned int symindex,
- const char *strtab,
- const char *name)
-{
- unsigned int i;
- Elf_Sym *sym = (void *)sechdrs[symindex].sh_addr;
-
- /* Search (defined) internal symbols first. */
- for (i = 1; i < sechdrs[symindex].sh_size/sizeof(*sym); i++) {
- if (sym[i].st_shndx != SHN_UNDEF
- && strcmp(name, strtab + sym[i].st_name) == 0)
- return sym[i].st_value;
- }
- return 0;
-}
-
/* Search for module by name: must hold module_mutex. */
static struct module *find_module(const char *name)
{
void symbol_put_addr(void *addr)
{
- unsigned long flags;
+ struct module *modaddr;
- spin_lock_irqsave(&modlist_lock, flags);
- if (!kernel_text_address((unsigned long)addr))
- BUG();
+ if (core_kernel_text((unsigned long)addr))
+ return;
- module_put(module_text_address((unsigned long)addr));
- spin_unlock_irqrestore(&modlist_lock, flags);
+ if (!(modaddr = module_text_address((unsigned long)addr)))
+ BUG();
+ module_put(modaddr);
}
EXPORT_SYMBOL_GPL(symbol_put_addr);
.show = show_refcnt,
};
+void module_put(struct module *module)
+{
+ if (module) {
+ unsigned int cpu = get_cpu();
+ local_dec(&module->ref[cpu].count);
+ /* Maybe they're waiting for us to drop reference? */
+ if (unlikely(!module_is_live(module)))
+ wake_up_process(module->waiter);
+ put_cpu();
+ }
+}
+EXPORT_SYMBOL(module_put);
+
#else /* !CONFIG_MODULE_UNLOAD */
static void print_unload_info(struct seq_file *m, struct module *mod)
{
}
#endif /* CONFIG_MODULE_UNLOAD */
+static ssize_t show_initstate(struct module_attribute *mattr,
+ struct module *mod, char *buffer)
+{
+ const char *state = "unknown";
+
+ switch (mod->state) {
+ case MODULE_STATE_LIVE:
+ state = "live";
+ break;
+ case MODULE_STATE_COMING:
+ state = "coming";
+ break;
+ case MODULE_STATE_GOING:
+ state = "going";
+ break;
+ }
+ return sprintf(buffer, "%s\n", state);
+}
+
+static struct module_attribute initstate = {
+ .attr = { .name = "initstate", .mode = 0444, .owner = THIS_MODULE },
+ .show = show_initstate,
+};
+
static struct module_attribute *modinfo_attrs[] = {
&modinfo_version,
&modinfo_srcversion,
+ &initstate,
#ifdef CONFIG_MODULE_UNLOAD
&refcnt,
#endif
NULL,
};
-#ifdef CONFIG_OBSOLETE_MODPARM
-/* Bounds checking done below */
-static int obsparm_copy_string(const char *val, struct kernel_param *kp)
-{
- strcpy(kp->arg, val);
- return 0;
-}
-
-static int set_obsolete(const char *val, struct kernel_param *kp)
-{
- unsigned int min, max;
- unsigned int size, maxsize;
- int dummy;
- char *endp;
- const char *p;
- struct obsolete_modparm *obsparm = kp->arg;
-
- if (!val) {
- printk(KERN_ERR "Parameter %s needs an argument\n", kp->name);
- return -EINVAL;
- }
-
- /* type is: [min[-max]]{b,h,i,l,s} */
- p = obsparm->type;
- min = simple_strtol(p, &endp, 10);
- if (endp == obsparm->type)
- min = max = 1;
- else if (*endp == '-') {
- p = endp+1;
- max = simple_strtol(p, &endp, 10);
- } else
- max = min;
- switch (*endp) {
- case 'b':
- return param_array(kp->name, val, min, max, obsparm->addr,
- 1, param_set_byte, &dummy);
- case 'h':
- return param_array(kp->name, val, min, max, obsparm->addr,
- sizeof(short), param_set_short, &dummy);
- case 'i':
- return param_array(kp->name, val, min, max, obsparm->addr,
- sizeof(int), param_set_int, &dummy);
- case 'l':
- return param_array(kp->name, val, min, max, obsparm->addr,
- sizeof(long), param_set_long, &dummy);
- case 's':
- return param_array(kp->name, val, min, max, obsparm->addr,
- sizeof(char *), param_set_charp, &dummy);
-
- case 'c':
- /* Undocumented: 1-5c50 means 1-5 strings of up to 49 chars,
- and the decl is "char xxx[5][50];" */
- p = endp+1;
- maxsize = simple_strtol(p, &endp, 10);
- /* We check lengths here (yes, this is a hack). */
- p = val;
- while (p[size = strcspn(p, ",")]) {
- if (size >= maxsize)
- goto oversize;
- p += size+1;
- }
- if (size >= maxsize)
- goto oversize;
- return param_array(kp->name, val, min, max, obsparm->addr,
- maxsize, obsparm_copy_string, &dummy);
- }
- printk(KERN_ERR "Unknown obsolete parameter type %s\n", obsparm->type);
- return -EINVAL;
- oversize:
- printk(KERN_ERR
- "Parameter %s doesn't fit in %u chars.\n", kp->name, maxsize);
- return -EINVAL;
-}
-
-static int obsolete_params(const char *name,
- char *args,
- struct obsolete_modparm obsparm[],
- unsigned int num,
- Elf_Shdr *sechdrs,
- unsigned int symindex,
- const char *strtab)
-{
- struct kernel_param *kp;
- unsigned int i;
- int ret;
-
- kp = kmalloc(sizeof(kp[0]) * num, GFP_KERNEL);
- if (!kp)
- return -ENOMEM;
-
- for (i = 0; i < num; i++) {
- char sym_name[128 + sizeof(MODULE_SYMBOL_PREFIX)];
-
- snprintf(sym_name, sizeof(sym_name), "%s%s",
- MODULE_SYMBOL_PREFIX, obsparm[i].name);
-
- kp[i].name = obsparm[i].name;
- kp[i].perm = 000;
- kp[i].set = set_obsolete;
- kp[i].get = NULL;
- obsparm[i].addr
- = (void *)find_local_symbol(sechdrs, symindex, strtab,
- sym_name);
- if (!obsparm[i].addr) {
- printk("%s: falsely claims to have parameter %s\n",
- name, obsparm[i].name);
- ret = -EINVAL;
- goto out;
- }
- kp[i].arg = &obsparm[i];
- }
-
- ret = parse_args(name, args, kp, num, NULL);
- out:
- kfree(kp);
- return ret;
-}
-#else
-static int obsolete_params(const char *name,
- char *args,
- struct obsolete_modparm obsparm[],
- unsigned int num,
- Elf_Shdr *sechdrs,
- unsigned int symindex,
- const char *strtab)
-{
- if (num != 0)
- printk(KERN_WARNING "%s: Ignoring obsolete parameters\n",
- name);
- return 0;
-}
-#endif /* CONFIG_OBSOLETE_MODPARM */
-
static const char vermagic[] = VERMAGIC_STRING;
#ifdef CONFIG_MODVERSIONS
return 0;
}
/* Not in module's version table. OK, but that taints the kernel. */
- if (!(tainted & TAINT_FORCED_MODULE)) {
+ if (!(tainted & TAINT_FORCED_MODULE))
printk("%s: no version for \"%s\" found: kernel tainted.\n",
mod->name, symname);
- add_taint(TAINT_FORCED_MODULE);
- }
+ add_taint_module(mod, TAINT_FORCED_MODULE);
return 1;
}
unsigned long ret;
const unsigned long *crc;
- ret = __find_symbol(name, &owner, &crc, mod->license_gplok);
+ ret = __find_symbol(name, &owner, &crc,
+ !(mod->taints & TAINT_PROPRIETARY_MODULE));
if (ret) {
/* use_module can fail due to OOM, or module unloading */
if (!check_version(sechdrs, versindex, name, mod, crc) ||
return sprintf(buf, "0x%lx\n", sattr->address);
}
+static void free_sect_attrs(struct module_sect_attrs *sect_attrs)
+{
+ int section;
+
+ for (section = 0; section < sect_attrs->nsections; section++)
+ kfree(sect_attrs->attrs[section].name);
+ kfree(sect_attrs);
+}
+
static void add_sect_attrs(struct module *mod, unsigned int nsect,
char *secstrings, Elf_Shdr *sechdrs)
{
+ nloaded * sizeof(sect_attrs->attrs[0]),
sizeof(sect_attrs->grp.attrs[0]));
size[1] = (nloaded + 1) * sizeof(sect_attrs->grp.attrs[0]);
- if (! (sect_attrs = kmalloc(size[0] + size[1], GFP_KERNEL)))
+ sect_attrs = kzalloc(size[0] + size[1], GFP_KERNEL);
+ if (sect_attrs == NULL)
return;
/* Setup section attributes. */
sect_attrs->grp.name = "sections";
sect_attrs->grp.attrs = (void *)sect_attrs + size[0];
+ sect_attrs->nsections = 0;
sattr = §_attrs->attrs[0];
gattr = §_attrs->grp.attrs[0];
for (i = 0; i < nsect; i++) {
if (! (sechdrs[i].sh_flags & SHF_ALLOC))
continue;
sattr->address = sechdrs[i].sh_addr;
- strlcpy(sattr->name, secstrings + sechdrs[i].sh_name,
- MODULE_SECT_NAME_LEN);
+ sattr->name = kstrdup(secstrings + sechdrs[i].sh_name,
+ GFP_KERNEL);
+ if (sattr->name == NULL)
+ goto out;
+ sect_attrs->nsections++;
sattr->mattr.show = module_sect_show;
sattr->mattr.store = NULL;
sattr->mattr.attr.name = sattr->name;
mod->sect_attrs = sect_attrs;
return;
out:
- kfree(sect_attrs);
+ free_sect_attrs(sect_attrs);
}
static void remove_sect_attrs(struct module *mod)
&mod->sect_attrs->grp);
/* We are positive that no one is using any sect attrs
* at this point. Deallocate immediately. */
- kfree(mod->sect_attrs);
+ free_sect_attrs(mod->sect_attrs);
mod->sect_attrs = NULL;
}
}
-
#else
+
static inline void add_sect_attrs(struct module *mod, unsigned int nsect,
char *sectstrings, Elf_Shdr *sechdrs)
{
{
int err;
+ if (!module_subsys.kset.subsys) {
+ printk(KERN_ERR "%s: module_subsys not initialized\n",
+ mod->name);
+ err = -EINVAL;
+ goto out;
+ }
memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj));
err = kobject_set_name(&mod->mkobj.kobj, "%s", mod->name);
if (err)
goto out;
kobj_set_kset_s(&mod->mkobj, module_subsys);
mod->mkobj.mod = mod;
- err = kobject_register(&mod->mkobj.kobj);
+
+ /* delay uevent until full sysfs population */
+ kobject_init(&mod->mkobj.kobj);
+ err = kobject_add(&mod->mkobj.kobj);
if (err)
goto out;
+ mod->drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");
+ if (!mod->drivers_dir)
+ goto out_unreg;
+
err = module_param_sysfs_setup(mod, kparam, num_params);
if (err)
- goto out_unreg;
+ goto out_unreg_drivers;
err = module_add_modinfo_attrs(mod);
if (err)
- goto out_unreg;
+ goto out_unreg_param;
+ kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
return 0;
+out_unreg_drivers:
+ kobject_unregister(mod->drivers_dir);
+out_unreg_param:
+ module_param_sysfs_remove(mod);
out_unreg:
- kobject_unregister(&mod->mkobj.kobj);
+ kobject_del(&mod->mkobj.kobj);
+ kobject_put(&mod->mkobj.kobj);
out:
return err;
}
{
module_remove_modinfo_attrs(mod);
module_param_sysfs_remove(mod);
+ kobject_unregister(mod->drivers_dir);
kobject_unregister(&mod->mkobj.kobj);
}
remove_sect_attrs(mod);
mod_kobject_remove(mod);
+ unwind_remove_table(mod->unwind_info, 0);
+
/* Arch-specific cleanup. */
module_arch_cleanup(mod);
if (mod->percpu)
percpu_modfree(mod->percpu);
+ /* Free lock-classes: */
+ lockdep_free_key_range(mod->module_core, mod->core_size);
+
/* Finally, free the core (containing the module structure) */
module_free(mod, mod->module_core);
}
}
}
-static inline int license_is_gpl_compatible(const char *license)
-{
- return (strcmp(license, "GPL") == 0
- || strcmp(license, "GPL v2") == 0
- || strcmp(license, "GPL and additional rights") == 0
- || strcmp(license, "Dual BSD/GPL") == 0
- || strcmp(license, "Dual MPL/GPL") == 0);
-}
-
static void set_license(struct module *mod, const char *license)
{
if (!license)
license = "unspecified";
- mod->license_gplok = license_is_gpl_compatible(license);
- if (!mod->license_gplok && !(tainted & TAINT_PROPRIETARY_MODULE)) {
- printk(KERN_WARNING "%s: module license '%s' taints kernel.\n",
- mod->name, license);
- add_taint(TAINT_PROPRIETARY_MODULE);
+ if (!license_is_gpl_compatible(license)) {
+ if (!(tainted & TAINT_PROPRIETARY_MODULE))
+ printk(KERN_WARNING "%s: module license '%s' taints "
+ "kernel.\n", mod->name, license);
+ add_taint_module(mod, TAINT_PROPRIETARY_MODULE);
}
}
if (!mod && lookup_symbol(name, __start___ksymtab, __stop___ksymtab))
return 1;
else
- if (lookup_symbol(name, mod->syms, mod->syms + mod->num_syms))
+ if (mod && lookup_symbol(name, mod->syms, mod->syms + mod->num_syms))
return 1;
else
return 0;
Elf_Ehdr *hdr;
Elf_Shdr *sechdrs;
char *secstrings, *args, *modmagic, *strtab = NULL;
- unsigned int i, symindex = 0, strindex = 0, setupindex, exindex,
- exportindex, modindex, obsparmindex, infoindex, gplindex,
- crcindex, gplcrcindex, versindex, pcpuindex, gplfutureindex,
- gplfuturecrcindex;
- long arglen;
+ unsigned int i;
+ unsigned int symindex = 0;
+ unsigned int strindex = 0;
+ unsigned int setupindex;
+ unsigned int exindex;
+ unsigned int exportindex;
+ unsigned int modindex;
+ unsigned int obsparmindex;
+ unsigned int infoindex;
+ unsigned int gplindex;
+ unsigned int crcindex;
+ unsigned int gplcrcindex;
+ unsigned int versindex;
+ unsigned int pcpuindex;
+ unsigned int gplfutureindex;
+ unsigned int gplfuturecrcindex;
+ unsigned int unwindex = 0;
+ unsigned int unusedindex;
+ unsigned int unusedcrcindex;
+ unsigned int unusedgplindex;
+ unsigned int unusedgplcrcindex;
struct module *mod;
long err = 0;
void *percpu = NULL, *ptr = NULL; /* Stops spurious gcc warning */
exportindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab");
gplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl");
gplfutureindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl_future");
+ unusedindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused");
+ unusedgplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused_gpl");
crcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab");
gplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl");
gplfuturecrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl_future");
+ unusedcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_unused");
+ unusedgplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_unused_gpl");
setupindex = find_sec(hdr, sechdrs, secstrings, "__param");
exindex = find_sec(hdr, sechdrs, secstrings, "__ex_table");
obsparmindex = find_sec(hdr, sechdrs, secstrings, "__obsparm");
versindex = find_sec(hdr, sechdrs, secstrings, "__versions");
infoindex = find_sec(hdr, sechdrs, secstrings, ".modinfo");
pcpuindex = find_pcpusec(hdr, sechdrs, secstrings);
+#ifdef ARCH_UNWIND_SECTION_NAME
+ unwindex = find_sec(hdr, sechdrs, secstrings, ARCH_UNWIND_SECTION_NAME);
+#endif
/* Don't keep modinfo section */
sechdrs[infoindex].sh_flags &= ~(unsigned long)SHF_ALLOC;
sechdrs[symindex].sh_flags |= SHF_ALLOC;
sechdrs[strindex].sh_flags |= SHF_ALLOC;
#endif
+ if (unwindex)
+ sechdrs[unwindex].sh_flags |= SHF_ALLOC;
/* Check module struct version now, before we try to use module. */
if (!check_modstruct_version(sechdrs, versindex, mod)) {
modmagic = get_modinfo(sechdrs, infoindex, "vermagic");
/* This is allowed: modprobe --force will invalidate it. */
if (!modmagic) {
- add_taint(TAINT_FORCED_MODULE);
+ add_taint_module(mod, TAINT_FORCED_MODULE);
printk(KERN_WARNING "%s: no version magic, tainting kernel.\n",
mod->name);
} else if (!same_magic(modmagic, vermagic)) {
}
/* Now copy in args */
- arglen = strlen_user(uargs);
- if (!arglen) {
- err = -EFAULT;
+ args = strndup_user(uargs, ~0UL >> 1);
+ if (IS_ERR(args)) {
+ err = PTR_ERR(args);
goto free_hdr;
}
- args = kmalloc(arglen, GFP_KERNEL);
- if (!args) {
- err = -ENOMEM;
- goto free_hdr;
- }
- if (copy_from_user(args, uargs, arglen) != 0) {
- err = -EFAULT;
- goto free_mod;
- }
-
- /* Userspace could have altered the string after the strlen_user() */
- args[arglen - 1] = '\0';
if (find_module(mod->name)) {
err = -EEXIST;
if (strcmp(mod->name, "ndiswrapper") == 0)
add_taint(TAINT_PROPRIETARY_MODULE);
if (strcmp(mod->name, "driverloader") == 0)
- add_taint(TAINT_PROPRIETARY_MODULE);
+ add_taint_module(mod, TAINT_PROPRIETARY_MODULE);
/* Set up MODINFO_ATTR fields */
setup_modinfo(mod, sechdrs, infoindex);
mod->gpl_crcs = (void *)sechdrs[gplcrcindex].sh_addr;
mod->num_gpl_future_syms = sechdrs[gplfutureindex].sh_size /
sizeof(*mod->gpl_future_syms);
+ mod->num_unused_syms = sechdrs[unusedindex].sh_size /
+ sizeof(*mod->unused_syms);
+ mod->num_unused_gpl_syms = sechdrs[unusedgplindex].sh_size /
+ sizeof(*mod->unused_gpl_syms);
mod->gpl_future_syms = (void *)sechdrs[gplfutureindex].sh_addr;
if (gplfuturecrcindex)
mod->gpl_future_crcs = (void *)sechdrs[gplfuturecrcindex].sh_addr;
+ mod->unused_syms = (void *)sechdrs[unusedindex].sh_addr;
+ if (unusedcrcindex)
+ mod->unused_crcs = (void *)sechdrs[unusedcrcindex].sh_addr;
+ mod->unused_gpl_syms = (void *)sechdrs[unusedgplindex].sh_addr;
+ if (unusedgplcrcindex)
+ mod->unused_crcs = (void *)sechdrs[unusedgplcrcindex].sh_addr;
+
#ifdef CONFIG_MODVERSIONS
if ((mod->num_syms && !crcindex) ||
(mod->num_gpl_syms && !gplcrcindex) ||
- (mod->num_gpl_future_syms && !gplfuturecrcindex)) {
+ (mod->num_gpl_future_syms && !gplfuturecrcindex) ||
+ (mod->num_unused_syms && !unusedcrcindex) ||
+ (mod->num_unused_gpl_syms && !unusedgplcrcindex)) {
printk(KERN_WARNING "%s: No versions for exported symbols."
" Tainting kernel.\n", mod->name);
- add_taint(TAINT_FORCED_MODULE);
+ add_taint_module(mod, TAINT_FORCED_MODULE);
}
#endif
set_fs(old_fs);
mod->args = args;
- if (obsparmindex) {
- err = obsolete_params(mod->name, mod->args,
- (struct obsolete_modparm *)
- sechdrs[obsparmindex].sh_addr,
- sechdrs[obsparmindex].sh_size
- / sizeof(struct obsolete_modparm),
- sechdrs, symindex,
- (char *)sechdrs[strindex].sh_addr);
- if (setupindex)
- printk(KERN_WARNING "%s: Ignoring new-style "
- "parameters in presence of obsolete ones\n",
- mod->name);
- } else {
- /* Size of section 0 is 0, so this works well if no params */
- err = parse_args(mod->name, mod->args,
- (struct kernel_param *)
- sechdrs[setupindex].sh_addr,
- sechdrs[setupindex].sh_size
- / sizeof(struct kernel_param),
- NULL);
- }
+ if (obsparmindex)
+ printk(KERN_WARNING "%s: Ignoring obsolete parameters\n",
+ mod->name);
+
+ /* Size of section 0 is 0, so this works well if no params */
+ err = parse_args(mod->name, mod->args,
+ (struct kernel_param *)
+ sechdrs[setupindex].sh_addr,
+ sechdrs[setupindex].sh_size
+ / sizeof(struct kernel_param),
+ NULL);
if (err < 0)
goto arch_cleanup;
goto arch_cleanup;
add_sect_attrs(mod, hdr->e_shnum, secstrings, sechdrs);
+ /* Size of section 0 is 0, so this works well if no unwind info. */
+ mod->unwind_info = unwind_add_table(mod,
+ (void *)sechdrs[unwindex].sh_addr,
+ sechdrs[unwindex].sh_size);
+
/* Get rid of temporary copy */
vfree(hdr);
/* Drop lock so they can recurse */
mutex_unlock(&module_mutex);
- mutex_lock(¬ify_mutex);
- notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod);
- mutex_unlock(¬ify_mutex);
+ blocking_notifier_call_chain(&module_notify_list,
+ MODULE_STATE_COMING, mod);
/* Start the module */
if (mod->init != NULL)
mod->state = MODULE_STATE_LIVE;
/* Drop initial reference. */
module_put(mod);
+ unwind_remove_table(mod->unwind_info, 1);
module_free(mod, mod->module_init);
mod->module_init = NULL;
mod->init_size = 0;
list_for_each_entry(mod, &modules, list) {
if (within(addr, mod->module_init, mod->init_size)
|| within(addr, mod->module_core, mod->core_size)) {
- *modname = mod->name;
+ if (modname)
+ *modname = mod->name;
return get_ksymbol(mod, addr, size, offset);
}
}
return NULL;
}
-struct module *module_get_kallsym(unsigned int symnum,
- unsigned long *value,
- char *type,
- char namebuf[128])
+struct module *module_get_kallsym(unsigned int symnum, unsigned long *value,
+ char *type, char *name, size_t namelen)
{
struct module *mod;
if (symnum < mod->num_symtab) {
*value = mod->symtab[symnum].st_value;
*type = mod->symtab[symnum].st_info;
- strncpy(namebuf,
- mod->strtab + mod->symtab[symnum].st_name,
- 127);
+ strlcpy(name, mod->strtab + mod->symtab[symnum].st_name,
+ namelen);
mutex_unlock(&module_mutex);
return mod;
}
mutex_unlock(&module_mutex);
}
+static char *taint_flags(unsigned int taints, char *buf)
+{
+ int bx = 0;
+
+ if (taints) {
+ buf[bx++] = '(';
+ if (taints & TAINT_PROPRIETARY_MODULE)
+ buf[bx++] = 'P';
+ if (taints & TAINT_FORCED_MODULE)
+ buf[bx++] = 'F';
+ /*
+ * TAINT_FORCED_RMMOD: could be added.
+ * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
+ * apply to modules.
+ */
+ buf[bx++] = ')';
+ }
+ buf[bx] = '\0';
+
+ return buf;
+}
+
static int m_show(struct seq_file *m, void *p)
{
struct module *mod = list_entry(p, struct module, list);
+ char buf[8];
+
seq_printf(m, "%s %lu",
mod->name, mod->init_size + mod->core_size);
print_unload_info(m, mod);
/* Used by oprofile and other similar tools. */
seq_printf(m, " 0x%p", mod->module_core);
+ /* Taints info */
+ if (mod->taints)
+ seq_printf(m, " %s", taint_flags(mod->taints, buf));
+
seq_printf(m, "\n");
return 0;
}
Where refcount is a number or -, and deps is a comma-separated list
of depends or -.
*/
-struct seq_operations modules_op = {
+const struct seq_operations modules_op = {
.start = m_start,
.next = m_next,
.stop = m_stop,
return e;
}
+/*
+ * Is this a valid module address?
+ */
+int is_module_address(unsigned long addr)
+{
+ unsigned long flags;
+ struct module *mod;
+
+ spin_lock_irqsave(&modlist_lock, flags);
+
+ list_for_each_entry(mod, &modules, list) {
+ if (within(addr, mod->module_core, mod->core_size)) {
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ return 1;
+ }
+ }
+
+ spin_unlock_irqrestore(&modlist_lock, flags);
+
+ return 0;
+}
+
+
/* Is this a valid kernel address? We don't grab the lock: we are oopsing. */
struct module *__module_text_address(unsigned long addr)
{
void print_modules(void)
{
struct module *mod;
+ char buf[8];
printk("Modules linked in:");
list_for_each_entry(mod, &modules, list)
- printk(" %s", mod->name);
+ printk(" %s%s", mod->name, taint_flags(mod->taints, buf));
printk("\n");
}
void module_add_driver(struct module *mod, struct device_driver *drv)
{
+ int no_warn;
+
if (!mod || !drv)
return;
- /* Don't check return code; this call is idempotent */
- sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+ /* Don't check return codes; these calls are idempotent */
+ no_warn = sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+ no_warn = sysfs_create_link(mod->drivers_dir, &drv->kobj, drv->name);
}
EXPORT_SYMBOL(module_add_driver);
if (!drv)
return;
sysfs_remove_link(&drv->kobj, "module");
+ if (drv->owner && drv->owner->drivers_dir)
+ sysfs_remove_link(drv->owner->drivers_dir, drv->name);
}
EXPORT_SYMBOL(module_remove_driver);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff