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-rw-r--r--kernel/module.c452
1 files changed, 159 insertions, 293 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 5aad477ddc79..ddfe45ac2fd1 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -39,6 +39,7 @@
#include <linux/device.h>
#include <linux/string.h>
#include <linux/sched.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <asm/cacheflush.h>
@@ -60,18 +61,18 @@
static DEFINE_SPINLOCK(modlist_lock);
/* List of modules, protected by module_mutex AND modlist_lock */
-static DECLARE_MUTEX(module_mutex);
+static DEFINE_MUTEX(module_mutex);
static LIST_HEAD(modules);
-static DECLARE_MUTEX(notify_mutex);
+static DEFINE_MUTEX(notify_mutex);
static struct notifier_block * module_notify_list;
int register_module_notifier(struct notifier_block * nb)
{
int err;
- down(&notify_mutex);
+ mutex_lock(&notify_mutex);
err = notifier_chain_register(&module_notify_list, nb);
- up(&notify_mutex);
+ mutex_unlock(&notify_mutex);
return err;
}
EXPORT_SYMBOL(register_module_notifier);
@@ -79,9 +80,9 @@ EXPORT_SYMBOL(register_module_notifier);
int unregister_module_notifier(struct notifier_block * nb)
{
int err;
- down(&notify_mutex);
+ mutex_lock(&notify_mutex);
err = notifier_chain_unregister(&module_notify_list, nb);
- up(&notify_mutex);
+ mutex_unlock(&notify_mutex);
return err;
}
EXPORT_SYMBOL(unregister_module_notifier);
@@ -126,8 +127,11 @@ extern const struct kernel_symbol __start___ksymtab[];
extern const struct kernel_symbol __stop___ksymtab[];
extern const struct kernel_symbol __start___ksymtab_gpl[];
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 unsigned long __start___kcrctab[];
extern const unsigned long __start___kcrctab_gpl[];
+extern const unsigned long __start___kcrctab_gpl_future[];
#ifndef CONFIG_MODVERSIONS
#define symversion(base, idx) NULL
@@ -135,6 +139,18 @@ extern const unsigned long __start___kcrctab_gpl[];
#define symversion(base, idx) ((base) ? ((base) + (idx)) : NULL)
#endif
+/* lookup symbol in given range of kernel_symbols */
+static const struct kernel_symbol *lookup_symbol(const char *name,
+ const struct kernel_symbol *start,
+ const struct kernel_symbol *stop)
+{
+ const struct kernel_symbol *ks = start;
+ for (; ks < stop; ks++)
+ if (strcmp(ks->name, name) == 0)
+ return ks;
+ return NULL;
+}
+
/* Find a symbol, return value, crc and module which owns it */
static unsigned long __find_symbol(const char *name,
struct module **owner,
@@ -142,64 +158,81 @@ static unsigned long __find_symbol(const char *name,
int gplok)
{
struct module *mod;
- unsigned int i;
+ const struct kernel_symbol *ks;
/* Core kernel first. */
*owner = NULL;
- for (i = 0; __start___ksymtab+i < __stop___ksymtab; i++) {
- if (strcmp(__start___ksymtab[i].name, name) == 0) {
- *crc = symversion(__start___kcrctab, i);
- return __start___ksymtab[i].value;
- }
+ ks = lookup_symbol(name, __start___ksymtab, __stop___ksymtab);
+ if (ks) {
+ *crc = symversion(__start___kcrctab, (ks - __start___ksymtab));
+ return ks->value;
}
if (gplok) {
- for (i = 0; __start___ksymtab_gpl+i<__stop___ksymtab_gpl; i++)
- if (strcmp(__start___ksymtab_gpl[i].name, name) == 0) {
- *crc = symversion(__start___kcrctab_gpl, i);
- return __start___ksymtab_gpl[i].value;
- }
+ ks = lookup_symbol(name, __start___ksymtab_gpl,
+ __stop___ksymtab_gpl);
+ if (ks) {
+ *crc = symversion(__start___kcrctab_gpl,
+ (ks - __start___ksymtab_gpl));
+ return ks->value;
+ }
+ }
+ ks = lookup_symbol(name, __start___ksymtab_gpl_future,
+ __stop___ksymtab_gpl_future);
+ if (ks) {
+ if (!gplok) {
+ printk(KERN_WARNING "Symbol %s is being used "
+ "by a non-GPL module, which will not "
+ "be allowed in the future\n", name);
+ printk(KERN_WARNING "Please see the file "
+ "Documentation/feature-removal-schedule.txt "
+ "in the kernel source tree for more "
+ "details.\n");
+ }
+ *crc = symversion(__start___kcrctab_gpl_future,
+ (ks - __start___ksymtab_gpl_future));
+ return ks->value;
}
/* Now try modules. */
list_for_each_entry(mod, &modules, list) {
*owner = mod;
- for (i = 0; i < mod->num_syms; i++)
- if (strcmp(mod->syms[i].name, name) == 0) {
- *crc = symversion(mod->crcs, i);
- return mod->syms[i].value;
- }
+ ks = lookup_symbol(name, mod->syms, mod->syms + mod->num_syms);
+ if (ks) {
+ *crc = symversion(mod->crcs, (ks - mod->syms));
+ return ks->value;
+ }
if (gplok) {
- for (i = 0; i < mod->num_gpl_syms; i++) {
- if (strcmp(mod->gpl_syms[i].name, name) == 0) {
- *crc = symversion(mod->gpl_crcs, i);
- return mod->gpl_syms[i].value;
- }
+ ks = lookup_symbol(name, mod->gpl_syms,
+ mod->gpl_syms + mod->num_gpl_syms);
+ if (ks) {
+ *crc = symversion(mod->gpl_crcs,
+ (ks - mod->gpl_syms));
+ return ks->value;
}
}
+ ks = lookup_symbol(name, mod->gpl_future_syms,
+ (mod->gpl_future_syms +
+ mod->num_gpl_future_syms));
+ if (ks) {
+ if (!gplok) {
+ printk(KERN_WARNING "Symbol %s is being used "
+ "by a non-GPL module, which will not "
+ "be allowed in the future\n", name);
+ printk(KERN_WARNING "Please see the file "
+ "Documentation/feature-removal-schedule.txt "
+ "in the kernel source tree for more "
+ "details.\n");
+ }
+ *crc = symversion(mod->gpl_future_crcs,
+ (ks - mod->gpl_future_syms));
+ return ks->value;
+ }
}
DEBUGP("Failed to find symbol %s\n", name);
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)
{
@@ -379,7 +412,6 @@ static inline void percpu_modcopy(void *pcpudst, const void *src,
}
#endif /* CONFIG_SMP */
-#ifdef CONFIG_MODULE_UNLOAD
#define MODINFO_ATTR(field) \
static void setup_modinfo_##field(struct module *mod, const char *s) \
{ \
@@ -411,12 +443,7 @@ static struct module_attribute modinfo_##field = { \
MODINFO_ATTR(version);
MODINFO_ATTR(srcversion);
-static struct module_attribute *modinfo_attrs[] = {
- &modinfo_version,
- &modinfo_srcversion,
- NULL,
-};
-
+#ifdef CONFIG_MODULE_UNLOAD
/* Init the unload section of the module. */
static void module_unload_init(struct module *mod)
{
@@ -557,7 +584,7 @@ static void free_module(struct module *mod);
static void wait_for_zero_refcount(struct module *mod)
{
/* Since we might sleep for some time, drop the semaphore first */
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
for (;;) {
DEBUGP("Looking at refcount...\n");
set_current_state(TASK_UNINTERRUPTIBLE);
@@ -566,7 +593,7 @@ static void wait_for_zero_refcount(struct module *mod)
schedule();
}
current->state = TASK_RUNNING;
- down(&module_mutex);
+ mutex_lock(&module_mutex);
}
asmlinkage long
@@ -583,7 +610,7 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
return -EFAULT;
name[MODULE_NAME_LEN-1] = '\0';
- if (down_interruptible(&module_mutex) != 0)
+ if (mutex_lock_interruptible(&module_mutex) != 0)
return -EINTR;
mod = find_module(name);
@@ -632,14 +659,14 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
/* Final destruction now noone is using it. */
if (mod->exit != NULL) {
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
mod->exit();
- down(&module_mutex);
+ mutex_lock(&module_mutex);
}
free_module(mod);
out:
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
return ret;
}
@@ -731,138 +758,14 @@ static inline void module_unload_init(struct module *mod)
}
#endif /* CONFIG_MODULE_UNLOAD */
-#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 struct module_attribute *modinfo_attrs[] = {
+ &modinfo_version,
+ &modinfo_srcversion,
+#ifdef CONFIG_MODULE_UNLOAD
+ &refcnt,
+#endif
+ NULL,
+};
static const char vermagic[] = VERMAGIC_STRING;
@@ -1056,37 +959,28 @@ static inline void remove_sect_attrs(struct module *mod)
}
#endif /* CONFIG_KALLSYMS */
-
-#ifdef CONFIG_MODULE_UNLOAD
-static inline int module_add_refcnt_attr(struct module *mod)
-{
- return sysfs_create_file(&mod->mkobj.kobj, &refcnt.attr);
-}
-static void module_remove_refcnt_attr(struct module *mod)
-{
- return sysfs_remove_file(&mod->mkobj.kobj, &refcnt.attr);
-}
-#else
-static inline int module_add_refcnt_attr(struct module *mod)
-{
- return 0;
-}
-static void module_remove_refcnt_attr(struct module *mod)
-{
-}
-#endif
-
-#ifdef CONFIG_MODULE_UNLOAD
static int module_add_modinfo_attrs(struct module *mod)
{
struct module_attribute *attr;
+ struct module_attribute *temp_attr;
int error = 0;
int i;
+ mod->modinfo_attrs = kzalloc((sizeof(struct module_attribute) *
+ (ARRAY_SIZE(modinfo_attrs) + 1)),
+ GFP_KERNEL);
+ if (!mod->modinfo_attrs)
+ return -ENOMEM;
+
+ temp_attr = mod->modinfo_attrs;
for (i = 0; (attr = modinfo_attrs[i]) && !error; i++) {
if (!attr->test ||
- (attr->test && attr->test(mod)))
- error = sysfs_create_file(&mod->mkobj.kobj,&attr->attr);
+ (attr->test && attr->test(mod))) {
+ memcpy(temp_attr, attr, sizeof(*temp_attr));
+ temp_attr->attr.owner = mod;
+ error = sysfs_create_file(&mod->mkobj.kobj,&temp_attr->attr);
+ ++temp_attr;
+ }
}
return error;
}
@@ -1096,12 +990,16 @@ static void module_remove_modinfo_attrs(struct module *mod)
struct module_attribute *attr;
int i;
- for (i = 0; (attr = modinfo_attrs[i]); i++) {
+ for (i = 0; (attr = &mod->modinfo_attrs[i]); i++) {
+ /* pick a field to test for end of list */
+ if (!attr->attr.name)
+ break;
sysfs_remove_file(&mod->mkobj.kobj,&attr->attr);
- attr->free(mod);
+ if (attr->free)
+ attr->free(mod);
}
+ kfree(mod->modinfo_attrs);
}
-#endif
static int mod_sysfs_setup(struct module *mod,
struct kernel_param *kparam,
@@ -1119,19 +1017,13 @@ static int mod_sysfs_setup(struct module *mod,
if (err)
goto out;
- err = module_add_refcnt_attr(mod);
- if (err)
- goto out_unreg;
-
err = module_param_sysfs_setup(mod, kparam, num_params);
if (err)
goto out_unreg;
-#ifdef CONFIG_MODULE_UNLOAD
err = module_add_modinfo_attrs(mod);
if (err)
goto out_unreg;
-#endif
return 0;
@@ -1143,10 +1035,7 @@ out:
static void mod_kobject_remove(struct module *mod)
{
-#ifdef CONFIG_MODULE_UNLOAD
module_remove_modinfo_attrs(mod);
-#endif
- module_remove_refcnt_attr(mod);
module_param_sysfs_remove(mod);
kobject_unregister(&mod->mkobj.kobj);
@@ -1424,7 +1313,6 @@ static char *get_modinfo(Elf_Shdr *sechdrs,
return NULL;
}
-#ifdef CONFIG_MODULE_UNLOAD
static void setup_modinfo(struct module *mod, Elf_Shdr *sechdrs,
unsigned int infoindex)
{
@@ -1439,23 +1327,17 @@ static void setup_modinfo(struct module *mod, Elf_Shdr *sechdrs,
attr->attr.name));
}
}
-#endif
#ifdef CONFIG_KALLSYMS
int is_exported(const char *name, const struct module *mod)
{
- unsigned int i;
-
- if (!mod) {
- for (i = 0; __start___ksymtab+i < __stop___ksymtab; i++)
- if (strcmp(__start___ksymtab[i].name, name) == 0)
- return 1;
- return 0;
- }
- for (i = 0; i < mod->num_syms; i++)
- if (strcmp(mod->syms[i].name, name) == 0)
+ if (!mod && lookup_symbol(name, __start___ksymtab, __stop___ksymtab))
+ return 1;
+ else
+ if (lookup_symbol(name, mod->syms, mod->syms + mod->num_syms))
return 1;
- return 0;
+ else
+ return 0;
}
/* As per nm */
@@ -1537,8 +1419,8 @@ static struct module *load_module(void __user *umod,
char *secstrings, *args, *modmagic, *strtab = NULL;
unsigned int i, symindex = 0, strindex = 0, setupindex, exindex,
exportindex, modindex, obsparmindex, infoindex, gplindex,
- crcindex, gplcrcindex, versindex, pcpuindex;
- long arglen;
+ crcindex, gplcrcindex, versindex, pcpuindex, gplfutureindex,
+ gplfuturecrcindex;
struct module *mod;
long err = 0;
void *percpu = NULL, *ptr = NULL; /* Stops spurious gcc warning */
@@ -1618,8 +1500,10 @@ static struct module *load_module(void __user *umod,
/* Optional sections */
exportindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab");
gplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl");
+ gplfutureindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl_future");
crcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab");
gplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl");
+ gplfuturecrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl_future");
setupindex = find_sec(hdr, sechdrs, secstrings, "__param");
exindex = find_sec(hdr, sechdrs, secstrings, "__ex_table");
obsparmindex = find_sec(hdr, sechdrs, secstrings, "__obsparm");
@@ -1655,23 +1539,11 @@ static struct module *load_module(void __user *umod,
}
/* Now copy in args */
- arglen = strlen_user(uargs);
- if (!arglen) {
- err = -EFAULT;
- goto free_hdr;
- }
- args = kmalloc(arglen, GFP_KERNEL);
- if (!args) {
- err = -ENOMEM;
+ args = strndup_user(uargs, ~0UL >> 1);
+ if (IS_ERR(args)) {
+ err = PTR_ERR(args);
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;
@@ -1755,10 +1627,8 @@ static struct module *load_module(void __user *umod,
if (strcmp(mod->name, "driverloader") == 0)
add_taint(TAINT_PROPRIETARY_MODULE);
-#ifdef CONFIG_MODULE_UNLOAD
/* Set up MODINFO_ATTR fields */
setup_modinfo(mod, sechdrs, infoindex);
-#endif
/* Fix up syms, so that st_value is a pointer to location. */
err = simplify_symbols(sechdrs, symindex, strtab, versindex, pcpuindex,
@@ -1775,10 +1645,16 @@ static struct module *load_module(void __user *umod,
mod->gpl_syms = (void *)sechdrs[gplindex].sh_addr;
if (gplcrcindex)
mod->gpl_crcs = (void *)sechdrs[gplcrcindex].sh_addr;
+ mod->num_gpl_future_syms = sechdrs[gplfutureindex].sh_size /
+ sizeof(*mod->gpl_future_syms);
+ mod->gpl_future_syms = (void *)sechdrs[gplfutureindex].sh_addr;
+ if (gplfuturecrcindex)
+ mod->gpl_future_crcs = (void *)sechdrs[gplfuturecrcindex].sh_addr;
#ifdef CONFIG_MODVERSIONS
if ((mod->num_syms && !crcindex) ||
- (mod->num_gpl_syms && !gplcrcindex)) {
+ (mod->num_gpl_syms && !gplcrcindex) ||
+ (mod->num_gpl_future_syms && !gplfuturecrcindex)) {
printk(KERN_WARNING "%s: No versions for exported symbols."
" Tainting kernel.\n", mod->name);
add_taint(TAINT_FORCED_MODULE);
@@ -1847,27 +1723,17 @@ static struct module *load_module(void __user *umod,
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;
@@ -1933,13 +1799,13 @@ sys_init_module(void __user *umod,
return -EPERM;
/* Only one module load at a time, please */
- if (down_interruptible(&module_mutex) != 0)
+ if (mutex_lock_interruptible(&module_mutex) != 0)
return -EINTR;
/* Do all the hard work */
mod = load_module(umod, len, uargs);
if (IS_ERR(mod)) {
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
return PTR_ERR(mod);
}
@@ -1948,11 +1814,11 @@ sys_init_module(void __user *umod,
stop_machine_run(__link_module, mod, NR_CPUS);
/* Drop lock so they can recurse */
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
- down(&notify_mutex);
+ mutex_lock(&notify_mutex);
notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod);
- up(&notify_mutex);
+ mutex_unlock(&notify_mutex);
/* Start the module */
if (mod->init != NULL)
@@ -1967,15 +1833,15 @@ sys_init_module(void __user *umod,
mod->name);
else {
module_put(mod);
- down(&module_mutex);
+ mutex_lock(&module_mutex);
free_module(mod);
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
}
return ret;
}
/* Now it's a first class citizen! */
- down(&module_mutex);
+ mutex_lock(&module_mutex);
mod->state = MODULE_STATE_LIVE;
/* Drop initial reference. */
module_put(mod);
@@ -1983,7 +1849,7 @@ sys_init_module(void __user *umod,
mod->module_init = NULL;
mod->init_size = 0;
mod->init_text_size = 0;
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
return 0;
}
@@ -2073,7 +1939,7 @@ struct module *module_get_kallsym(unsigned int symnum,
{
struct module *mod;
- down(&module_mutex);
+ mutex_lock(&module_mutex);
list_for_each_entry(mod, &modules, list) {
if (symnum < mod->num_symtab) {
*value = mod->symtab[symnum].st_value;
@@ -2081,12 +1947,12 @@ struct module *module_get_kallsym(unsigned int symnum,
strncpy(namebuf,
mod->strtab + mod->symtab[symnum].st_name,
127);
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
return mod;
}
symnum -= mod->num_symtab;
}
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
return NULL;
}
@@ -2129,7 +1995,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
struct list_head *i;
loff_t n = 0;
- down(&module_mutex);
+ mutex_lock(&module_mutex);
list_for_each(i, &modules) {
if (n++ == *pos)
break;
@@ -2150,7 +2016,7 @@ static void *m_next(struct seq_file *m, void *p, loff_t *pos)
static void m_stop(struct seq_file *m, void *p)
{
- up(&module_mutex);
+ mutex_unlock(&module_mutex);
}
static int m_show(struct seq_file *m, void *p)
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-09 14:36:23 +0200