Two persons told me independantly that this patch is utter crap and
doesn't even compile. And they're right..
Here's a version that does not even compile but even boot and cover
more uses.
Note that the return value of set_binfmt isn't yet checked. That's
another patch.
--- 1.24/crypto/api.c Sun Dec 8 17:36:48 2002
+++ edited/crypto/api.c Sun Dec 29 23:45:53 2002
@@ -29,8 +29,7 @@
static inline void crypto_alg_put(struct crypto_alg *alg)
{
- if (alg->cra_module)
- __MOD_DEC_USE_COUNT(alg->cra_module);
+ module_put(alg->cra_module);
}
struct crypto_alg *crypto_alg_lookup(const char *name)
--- 1.61/drivers/block/genhd.c Wed Dec 4 19:07:17 2002
+++ edited/drivers/block/genhd.c Sun Dec 29 23:52:58 2002
@@ -168,15 +168,13 @@
best = p->range;
*part = dev - p->dev;
if (p->lock && p->lock(dev, data) < 0) {
- if (owner)
- __MOD_DEC_USE_COUNT(owner);
+ module_put(owner);
continue;
}
read_unlock(&gendisk_lock);
disk = probe(dev, part, data);
/* Currently ->owner protects _only_ ->probe() itself. */
- if (owner)
- __MOD_DEC_USE_COUNT(owner);
+ module_put(owner);
if (disk)
return disk;
goto retry;
--- 1.119/fs/block_dev.c Sun Dec 15 18:49:04 2002
+++ edited/fs/block_dev.c Sun Dec 29 21:50:13 2002
@@ -623,8 +623,7 @@
}
} else {
put_disk(disk);
- if (owner)
- __MOD_DEC_USE_COUNT(owner);
+ module_put(owner);
if (bdev->bd_contains == bdev) {
if (bdev->bd_disk->fops->open) {
ret = bdev->bd_disk->fops->open(inode, file);
@@ -651,8 +650,7 @@
blkdev_put(bdev->bd_contains, BDEV_RAW);
bdev->bd_contains = NULL;
put_disk(disk);
- if (owner)
- __MOD_DEC_USE_COUNT(owner);
+ module_put(owner);
out:
up(&bdev->bd_sem);
unlock_kernel();
@@ -723,9 +721,10 @@
}
if (!bdev->bd_openers) {
struct module *owner = disk->fops->owner;
+
put_disk(disk);
- if (owner)
- __MOD_DEC_USE_COUNT(owner);
+ module_put(owner);
+
bdev->bd_disk = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
if (bdev != bdev->bd_contains) {
===== fs/dquot.c 1.52 vs edited =====
--- 1.52/fs/dquot.c Wed Nov 27 18:11:14 2002
+++ edited/fs/dquot.c Sun Dec 29 21:33:57 2002
@@ -111,8 +111,7 @@
static void put_quota_format(struct quota_format_type *fmt)
{
- if (fmt->qf_owner)
- __MOD_DEC_USE_COUNT(fmt->qf_owner);
+ module_put(fmt->qf_owner);
}
/*
===== fs/exec.c 1.58 vs edited =====
--- 1.58/fs/exec.c Sun Dec 15 06:07:04 2002
+++ edited/fs/exec.c Sun Dec 29 23:06:11 2002
@@ -102,8 +102,7 @@
static inline void put_binfmt(struct linux_binfmt * fmt)
{
- if (fmt->module)
- __MOD_DEC_USE_COUNT(fmt->module);
+ module_put(fmt->module);
}
/*
@@ -1108,14 +1107,18 @@
return retval;
}
-void set_binfmt(struct linux_binfmt *new)
+int set_binfmt(struct linux_binfmt *new)
{
struct linux_binfmt *old = current->binfmt;
- if (new && new->module)
- __MOD_INC_USE_COUNT(new->module);
+
+ if (new) {
+ if (!try_module_get(new->module))
+ return -1;
+ }
current->binfmt = new;
- if (old && old->module)
- __MOD_DEC_USE_COUNT(old->module);
+ if (old)
+ module_put(old->module);
+ return 0;
}
#define CORENAME_MAX_SIZE 64
===== fs/nls/nls_base.c 1.7 vs edited =====
--- 1.7/fs/nls/nls_base.c Wed Aug 28 03:53:09 2002
+++ edited/fs/nls/nls_base.c Sun Dec 29 23:46:36 2002
@@ -245,8 +245,7 @@
void unload_nls(struct nls_table *nls)
{
- if (nls->owner)
- __MOD_DEC_USE_COUNT(nls->owner);
+ module_put(nls->owner);
}
wchar_t charset2uni[256] = {
===== fs/partitions/check.c 1.90 vs edited =====
--- 1.90/fs/partitions/check.c Thu Dec 5 14:01:25 2002
+++ edited/fs/partitions/check.c Sun Dec 29 23:45:36 2002
@@ -565,8 +565,7 @@
dname->name = NULL;
if (hd) {
dname->name = disk_name(hd, part, dname->namebuf);
- if (hd->fops->owner)
- __MOD_DEC_USE_COUNT(hd->fops->owner);
+ module_put(hd->fops->owner);
put_disk(hd);
}
if (!dname->name) {
===== include/linux/binfmts.h 1.5 vs edited =====
--- 1.5/include/linux/binfmts.h Sun Dec 15 06:07:04 2002
+++ edited/include/linux/binfmts.h Sun Dec 29 23:06:35 2002
@@ -58,13 +58,7 @@
extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
extern void compute_creds(struct linux_binprm *binprm);
extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
-extern void set_binfmt(struct linux_binfmt *new);
-
-
-#if 0
-/* this went away now */
-#define change_ldt(a,b) setup_arg_pages(a,b)
-#endif
+extern int set_binfmt(struct linux_binfmt *new);
#endif /* __KERNEL__ */
#endif /* _LINUX_BINFMTS_H */
===== include/linux/compiler.h 1.7 vs edited =====
--- 1.7/include/linux/compiler.h Sat Dec 28 12:45:03 2002
+++ edited/include/linux/compiler.h Sun Dec 29 18:52:54 2002
@@ -21,9 +21,9 @@
* and then gcc will emit a warning for each usage of the function.
*/
#if __GNUC__ >= 3
-#define deprecated __attribute__((deprecated))
+#define __deprecated __attribute__((deprecated))
#else
-#define deprecated
+#define __deprecated
#endif
/* This macro obfuscates arithmetic on a variable address so that gcc
===== include/linux/fs.h 1.204 vs edited =====
--- 1.204/include/linux/fs.h Sat Dec 14 18:20:24 2002
+++ edited/include/linux/fs.h Sun Dec 29 23:05:01 2002
@@ -983,13 +983,13 @@
/* Alas, no aliases. Too much hassle with bringing module.h everywhere */
#define fops_get(fops) \
(((fops) && (fops)->owner) \
- ? ( try_inc_mod_count((fops)->owner) ? (fops) : NULL ) \
+ ? (try_inc_mod_count((fops)->owner) ? (fops) : NULL) \
: (fops))
#define fops_put(fops) \
do { \
if ((fops) && (fops)->owner) \
- __MOD_DEC_USE_COUNT((fops)->owner); \
+ module_put((fops)->owner); \
} while(0)
extern int register_filesystem(struct file_system_type *);
===== include/linux/ioport.h 1.5 vs edited =====
--- 1.5/include/linux/ioport.h Sat Dec 28 17:14:46 2002
+++ edited/include/linux/ioport.h Sun Dec 29 18:53:36 2002
@@ -108,7 +108,7 @@
#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n))
#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
-extern int deprecated __check_region(struct resource *, unsigned long, unsigned long);
+extern int __deprecated __check_region(struct resource *, unsigned long, unsigned long);
extern void __release_region(struct resource *, unsigned long, unsigned long);
#define get_ioport_list(buf) get_resource_list(&ioport_resource, buf, PAGE_SIZE)
===== include/linux/module.h 1.30 vs edited =====
--- 1.30/include/linux/module.h Mon Dec 2 01:44:43 2002
+++ edited/include/linux/module.h Sun Dec 29 19:50:27 2002
@@ -296,9 +296,20 @@
#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
-#define __MOD_INC_USE_COUNT(mod) \
- do { __unsafe(mod); (void)try_module_get(mod); } while(0)
-#define __MOD_DEC_USE_COUNT(mod) module_put(mod)
+static inline void __deprecated __MOD_INC_USE_COUNT(struct module *module)
+{
+ __unsafe(module);
+ /*
+ * Yes, we ignore the retval here, that's why it's deprecated.
+ */
+ try_module_get(module);
+}
+
+static inline void __deprecated __MOD_DEC_USE_COUNT(struct module *module)
+{
+ module_put(module);
+}
+
#define SET_MODULE_OWNER(dev) ((dev)->owner = THIS_MODULE)
struct obsolete_modparm {
@@ -319,14 +330,21 @@
/* People do this inside their init routines, when the module isn't
"live" yet. They should no longer be doing that, but
meanwhile... */
+static inline void __deprecated _MOD_INC_USE_COUNT(struct module *module)
+{
+ __unsafe(module);
+
#if defined(CONFIG_MODULE_UNLOAD) && defined(MODULE)
-#define MOD_INC_USE_COUNT \
- do { __unsafe(THIS_MODULE); local_inc(&THIS_MODULE->ref[get_cpu()].count); put_cpu(); } while (0)
+ local_inc(&module->ref[get_cpu()].count);
+ put_cpu();
#else
-#define MOD_INC_USE_COUNT \
- do { __unsafe(THIS_MODULE); (void)try_module_get(THIS_MODULE); } while (0)
+ try_module_get(module);
#endif
-#define MOD_DEC_USE_COUNT module_put(THIS_MODULE)
+}
+#define MOD_INC_USE_COUNT \
+ _MOD_INC_USE_COUNT(THIS_MODULE)
+#define MOD_DEC_USE_COUNT \
+ __MOD_DEC_USE_COUNT(THIS_MODULE)
#define try_inc_mod_count(mod) try_module_get(mod)
#define EXPORT_NO_SYMBOLS
extern int module_dummy_usage;
@@ -364,5 +382,4 @@
extern const void *inter_module_get(const char *);
extern const void *inter_module_get_request(const char *, const char *);
extern void inter_module_put(const char *);
-
#endif /* _LINUX_MODULE_H */
===== include/linux/personality.h 1.4 vs edited =====
--- 1.4/include/linux/personality.h Fri Aug 30 10:00:40 2002
+++ edited/include/linux/personality.h Sun Dec 29 23:44:39 2002
@@ -107,22 +107,4 @@
#define set_personality(pers) \
((current->personality == pers) ? 0 : __set_personality(pers))
-/*
- * Load an execution domain.
- */
-#define get_exec_domain(ep) \
-do { \
- if (ep != NULL && ep->module != NULL) \
- __MOD_INC_USE_COUNT(ep->module); \
-} while (0)
-
-/*
- * Unload an execution domain.
- */
-#define put_exec_domain(ep) \
-do { \
- if (ep != NULL && ep->module != NULL) \
- __MOD_DEC_USE_COUNT(ep->module); \
-} while (0)
-
#endif /* _LINUX_PERSONALITY_H */
===== include/linux/wait.h 1.12 vs edited =====
--- 1.12/include/linux/wait.h Fri Nov 15 10:36:32 2002
+++ edited/include/linux/wait.h Sun Dec 29 19:05:26 2002
@@ -11,6 +11,7 @@
#ifdef __KERNEL__
#include <linux/config.h>
+#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/stddef.h>
#include <linux/spinlock.h>
@@ -244,11 +245,11 @@
* They are racy. DO NOT use them, use the wait_event* interfaces above.
* We plan to remove these interfaces during 2.7.
*/
-extern void FASTCALL(sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
+extern void __deprecated FASTCALL(sleep_on(wait_queue_head_t *q));
+extern long __deprecated FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
signed long timeout));
-extern void FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
+extern void __deprecated FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
+extern long __deprecated FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
signed long timeout));
/*
--- 1.11/kernel/exec_domain.c Wed Nov 13 19:56:02 2002
+++ edited/kernel/exec_domain.c Sun Dec 29 23:42:14 2002
@@ -172,7 +172,7 @@
fsp = copy_fs_struct(current->fs);
if (fsp == NULL) {
- put_exec_domain(ep);
+ module_put(ep->module);
return -ENOMEM;;
}
@@ -194,10 +194,7 @@
current_thread_info()->exec_domain = ep;
set_fs_altroot();
- put_exec_domain(oep);
-
- printk(KERN_DEBUG "[%s:%d]: set personality to %lx\n",
- current->comm, current->pid, personality);
+ module_put(oep->module);
return 0;
}
===== kernel/exit.c 1.76 vs edited =====
--- 1.76/kernel/exit.c Mon Dec 2 08:44:31 2002
+++ edited/kernel/exit.c Sun Dec 29 23:44:15 2002
@@ -664,9 +664,9 @@
if (current->leader)
disassociate_ctty(1);
- put_exec_domain(tsk->thread_info->exec_domain);
- if (tsk->binfmt && tsk->binfmt->module)
- __MOD_DEC_USE_COUNT(tsk->binfmt->module);
+ module_put(tsk->thread_info->exec_domain->module);
+ if (tsk->binfmt)
+ module_put(tsk->binfmt->module);
tsk->exit_code = code;
exit_notify();
===== kernel/fork.c 1.93 vs edited =====
--- 1.93/kernel/fork.c Sat Dec 14 12:42:12 2002
+++ edited/kernel/fork.c Sun Dec 29 23:43:58 2002
@@ -743,10 +743,11 @@
if (nr_threads >= max_threads)
goto bad_fork_cleanup_count;
- get_exec_domain(p->thread_info->exec_domain);
+ if (!try_module_get(p->thread_info->exec_domain->module))
+ goto bad_fork_cleanup_count;
- if (p->binfmt && p->binfmt->module)
- __MOD_INC_USE_COUNT(p->binfmt->module);
+ if (p->binfmt && !try_module_get(p->binfmt->module))
+ goto bad_fork_cleanup_put_domain;
#ifdef CONFIG_PREEMPT
/*
@@ -958,9 +959,10 @@
bad_fork_cleanup:
if (p->pid > 0)
free_pidmap(p->pid);
- put_exec_domain(p->thread_info->exec_domain);
- if (p->binfmt && p->binfmt->module)
- __MOD_DEC_USE_COUNT(p->binfmt->module);
+ if (p->binfmt)
+ module_put(p->binfmt->module);
+bad_fork_cleanup_put_domain:
+ module_put(p->thread_info->exec_domain->module);
bad_fork_cleanup_count:
atomic_dec(&p->user->processes);
free_uid(p->user);
===== kernel/intermodule.c 1.1 vs edited =====
--- 1.1/kernel/intermodule.c Fri Nov 8 23:08:33 2002
+++ edited/kernel/intermodule.c Sun Dec 29 21:32:41 2002
@@ -166,7 +166,7 @@
ime = list_entry(tmp, struct inter_module_entry, list);
if (strcmp(ime->im_name, im_name) == 0) {
if (ime->owner)
- __MOD_DEC_USE_COUNT(ime->owner);
+ module_put(ime->owner);
spin_unlock(&ime_lock);
return;
}
===== kernel/resource.c 1.7 vs edited =====
--- 1.7/kernel/resource.c Sat Dec 28 17:05:55 2002
+++ edited/kernel/resource.c Sun Dec 29 18:53:07 2002
@@ -237,7 +237,7 @@
return res;
}
-int deprecated __check_region(struct resource *parent, unsigned long start, unsigned long n)
+int __deprecated __check_region(struct resource *parent, unsigned long start, unsigned long n)
{
struct resource * res;
===== kernel/sched.c 1.145 vs edited =====
--- 1.145/kernel/sched.c Mon Dec 2 08:06:13 2002
+++ edited/kernel/sched.c Sun Dec 29 18:57:50 2002
@@ -1238,7 +1238,7 @@
__remove_wait_queue(q, &wait); \
spin_unlock_irqrestore(&q->lock, flags);
-void interruptible_sleep_on(wait_queue_head_t *q)
+void __deprecated interruptible_sleep_on(wait_queue_head_t *q)
{
SLEEP_ON_VAR
@@ -1249,7 +1249,7 @@
SLEEP_ON_TAIL
}
-long interruptible_sleep_on_timeout(wait_queue_head_t *q, long timeout)
+long __deprecated interruptible_sleep_on_timeout(wait_queue_head_t *q, long timeout)
{
SLEEP_ON_VAR
@@ -1262,7 +1262,7 @@
return timeout;
}
-void sleep_on(wait_queue_head_t *q)
+void __deprecated sleep_on(wait_queue_head_t *q)
{
SLEEP_ON_VAR
@@ -1273,7 +1273,7 @@
SLEEP_ON_TAIL
}
-long sleep_on_timeout(wait_queue_head_t *q, long timeout)
+long __deprecated sleep_on_timeout(wait_queue_head_t *q, long timeout)
{
SLEEP_ON_VAR
-
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