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kernel: use non-racy method for proc entries creation 

Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Denis V. Lunev 2008-04-29 01:02:31 -07:00 committed by Linus Torvalds
parent ac41cfd19b
commit c33fff0afb
10 changed files with 16 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/configs.c
View File

@ -79,11 +79,11 @@ static int __init ikconfig_init(void)
struct proc_dir_entry *entry;
/* create the current config file */
entry = create_proc_entry("config.gz", S_IFREG | S_IRUGO, NULL);
entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL,
&ikconfig_file_ops);
if (!entry)
return -ENOMEM;
entry->proc_fops = &ikconfig_file_ops;
entry->size = kernel_config_data_size;
return 0;

7
kernel/dma.c
View File

@ -149,12 +149,7 @@ static const struct file_operations proc_dma_operations = {
static int __init proc_dma_init(void)
{
struct proc_dir_entry *e;
e = create_proc_entry("dma", 0, NULL);
if (e)
e->proc_fops = &proc_dma_operations;
proc_create("dma", 0, NULL, &proc_dma_operations);
return 0;
}

6
kernel/kallsyms.c
View File

@ -472,11 +472,7 @@ static const struct file_operations kallsyms_operations = {
static int __init kallsyms_init(void)
{
struct proc_dir_entry *entry;
entry = create_proc_entry("kallsyms", 0444, NULL);
if (entry)
entry->proc_fops = &kallsyms_operations;
proc_create("kallsyms", 0444, NULL, &kallsyms_operations);
return 0;
}
__initcall(kallsyms_init);

9
kernel/latencytop.c
View File

@ -233,14 +233,7 @@ static struct file_operations lstats_fops = {
static int __init init_lstats_procfs(void)
{
struct proc_dir_entry *pe;
pe = create_proc_entry("latency_stats", 0644, NULL);
if (!pe)
return -ENOMEM;
pe->proc_fops = &lstats_fops;
proc_create("latency_stats", 0644, NULL, &lstats_fops);
return 0;
}
__initcall(init_lstats_procfs);

16
kernel/lockdep_proc.c
View File

@ -660,20 +660,12 @@ static const struct file_operations proc_lock_stat_operations = {
static int __init lockdep_proc_init(void)
{
struct proc_dir_entry *entry;
entry = create_proc_entry("lockdep", S_IRUSR, NULL);
if (entry)
entry->proc_fops = &proc_lockdep_operations;
entry = create_proc_entry("lockdep_stats", S_IRUSR, NULL);
if (entry)
entry->proc_fops = &proc_lockdep_stats_operations;
proc_create("lockdep", S_IRUSR, NULL, &proc_lockdep_operations);
proc_create("lockdep_stats", S_IRUSR, NULL,
&proc_lockdep_stats_operations);
#ifdef CONFIG_LOCK_STAT
entry = create_proc_entry("lock_stat", S_IRUSR, NULL);
if (entry)
entry->proc_fops = &proc_lock_stat_operations;
proc_create("lock_stat", S_IRUSR, NULL, &proc_lock_stat_operations);
#endif
return 0;

4
kernel/profile.c
View File

@ -587,10 +587,10 @@ static int __init create_proc_profile(void)
return 0;
if (create_hash_tables())
return -1;
entry = create_proc_entry("profile", S_IWUSR | S_IRUGO, NULL);
entry = proc_create("profile", S_IWUSR | S_IRUGO,
NULL, &proc_profile_operations);
if (!entry)
return 0;
entry->proc_fops = &proc_profile_operations;
entry->size = (1+prof_len) * sizeof(atomic_t);
hotcpu_notifier(profile_cpu_callback, 0);
return 0;

10
kernel/resource.c
View File

@ -131,14 +131,8 @@ static const struct file_operations proc_iomem_operations = {
static int __init ioresources_init(void)
{
struct proc_dir_entry *entry;
entry = create_proc_entry("ioports", 0, NULL);
if (entry)
entry->proc_fops = &proc_ioports_operations;
entry = create_proc_entry("iomem", 0, NULL);
if (entry)
entry->proc_fops = &proc_iomem_operations;
proc_create("ioports", 0, NULL, &proc_ioports_operations);
proc_create("iomem", 0, NULL, &proc_iomem_operations);
return 0;
}
__initcall(ioresources_init);

5
kernel/sched_debug.c
View File

@ -277,12 +277,9 @@ static int __init init_sched_debug_procfs(void)
{
struct proc_dir_entry *pe;
pe = create_proc_entry("sched_debug", 0644, NULL);
pe = proc_create("sched_debug", 0644, NULL, &sched_debug_fops);
if (!pe)
return -ENOMEM;
pe->proc_fops = &sched_debug_fops;
return 0;
}

5
kernel/time/timer_list.c
View File

@ -278,12 +278,9 @@ static int __init init_timer_list_procfs(void)
{
struct proc_dir_entry *pe;
pe = create_proc_entry("timer_list", 0644, NULL);
pe = proc_create("timer_list", 0644, NULL, &timer_list_fops);
if (!pe)
return -ENOMEM;
pe->proc_fops = &timer_list_fops;
return 0;
}
__initcall(init_timer_list_procfs);

5
kernel/time/timer_stats.c
View File

@ -415,12 +415,9 @@ static int __init init_tstats_procfs(void)
{
struct proc_dir_entry *pe;
pe = create_proc_entry("timer_stats", 0644, NULL);
pe = proc_create("timer_stats", 0644, NULL, &tstats_fops);
if (!pe)
return -ENOMEM;
pe->proc_fops = &tstats_fops;
return 0;
}
__initcall(init_tstats_procfs);