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crypto: fips - Move fips_enabled sysctl into fips.c 

There is currently a large ifdef FIPS code section in proc.c.
Ostensibly it's there because the fips_enabled sysctl sits under
/proc/sys/crypto.  However, no other crypto sysctls exist.

In fact, the whole ethos of the crypto API is against such user
interfaces so this patch moves all the FIPS sysctl code over to
fips.c.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-04-22 13:25:56 +08:00
parent 76450f93f1
commit 94072cb20e
2 changed files with 48 additions and 41 deletions
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48
crypto/fips.c
View File

@ -13,7 +13,9 @@
#include <linux/export.h> #include <linux/export.h>
#include <linux/fips.h> #include <linux/fips.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/sysctl.h>
int fips_enabled; int fips_enabled;
EXPORT_SYMBOL_GPL(fips_enabled); EXPORT_SYMBOL_GPL(fips_enabled);
@ -28,3 +30,49 @@ static int fips_enable(char *str)
} }
__setup("fips=", fips_enable); __setup("fips=", fips_enable);
static struct ctl_table crypto_sysctl_table[] = {
{
.procname = "fips_enabled",
.data = &fips_enabled,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec
},
{}
};
static struct ctl_table crypto_dir_table[] = {
{
.procname = "crypto",
.mode = 0555,
.child = crypto_sysctl_table
},
{}
};
static struct ctl_table_header *crypto_sysctls;
static void crypto_proc_fips_init(void)
{
crypto_sysctls = register_sysctl_table(crypto_dir_table);
}
static void crypto_proc_fips_exit(void)
{
unregister_sysctl_table(crypto_sysctls);
}
static int __init fips_init(void)
{
crypto_proc_fips_init();
return 0;
}
static void __exit fips_exit(void)
{
crypto_proc_fips_exit();
}
module_init(fips_init);
module_exit(fips_exit);

41
crypto/proc.c
View File

@ -20,47 +20,8 @@
#include <linux/rwsem.h> #include <linux/rwsem.h>
#include <linux/proc_fs.h> #include <linux/proc_fs.h>
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/sysctl.h>
#include "internal.h" #include "internal.h"
#ifdef CONFIG_CRYPTO_FIPS
static struct ctl_table crypto_sysctl_table[] = {
{
.procname = "fips_enabled",
.data = &fips_enabled,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec
},
{}
};
static struct ctl_table crypto_dir_table[] = {
{
.procname = "crypto",
.mode = 0555,
.child = crypto_sysctl_table
},
{}
};
static struct ctl_table_header *crypto_sysctls;
static void crypto_proc_fips_init(void)
{
crypto_sysctls = register_sysctl_table(crypto_dir_table);
}
static void crypto_proc_fips_exit(void)
{
if (crypto_sysctls)
unregister_sysctl_table(crypto_sysctls);
}
#else
#define crypto_proc_fips_init()
#define crypto_proc_fips_exit()
#endif
static void *c_start(struct seq_file *m, loff_t *pos) static void *c_start(struct seq_file *m, loff_t *pos)
{ {
down_read(&crypto_alg_sem); down_read(&crypto_alg_sem);
@ -148,11 +109,9 @@ static const struct file_operations proc_crypto_ops = {
void __init crypto_init_proc(void) void __init crypto_init_proc(void)
{ {
proc_create("crypto", 0, NULL, &proc_crypto_ops); proc_create("crypto", 0, NULL, &proc_crypto_ops);
crypto_proc_fips_init();
} }
void __exit crypto_exit_proc(void) void __exit crypto_exit_proc(void)
{ {
crypto_proc_fips_exit();
remove_proc_entry("crypto", NULL); remove_proc_entry("crypto", NULL);
} }