proc: move /proc/execdomains to kernel/exec_domain.c

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

2 files changed, 27 insertions, 15 deletions

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 15257d4b1b91..424b9d03b1a0 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -63,7 +63,6 @@
  * have a way to deal with that gracefully. Right now I used straightforward
  * wrappers, but this needs further analysis wrt potential overflows.
  */
-extern int get_exec_domain_list(char *);
 
 static int proc_calc_metrics(char *page, char **start, off_t off,
                                  int count, int *eof, int len)
@@ -486,13 +485,6 @@ static const struct file_operations proc_locks_operations = {
 };
 #endif /* CONFIG_FILE_LOCKING */
 
-static int execdomains_read_proc(char *page, char **start, off_t off,
-                                 int count, int *eof, void *data)
-{
-        int len = get_exec_domain_list(page);
-        return proc_calc_metrics(page, start, off, count, eof, len);
-}
-
 #ifdef CONFIG_PROC_PAGE_MONITOR
 #define KPMSIZE sizeof(u64)
 #define KPMMASK (KPMSIZE - 1)
@@ -632,7 +624,6 @@ void __init proc_misc_init(void)
                 char *name;
                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
         } *p, simple_ones[] = {
-                {"execdomains", execdomains_read_proc},
                 {NULL,}
         };
         for (p = simple_ones; p->name; p++)
diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index 0d407e886735..0511716e9424 100644
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -12,7 +12,9 @@
 #include <linux/kmod.h>
 #include <linux/module.h>
 #include <linux/personality.h>
+#include <linux/proc_fs.h>
 #include <linux/sched.h>
+#include <linux/seq_file.h>
 #include <linux/syscalls.h>
 #include <linux/sysctl.h>
 #include <linux/types.h>
@@ -173,20 +175,39 @@ __set_personality(u_long personality)
         return 0;
 }
 
-int
-get_exec_domain_list(char *page)
+#ifdef CONFIG_PROC_FS
+static int execdomains_proc_show(struct seq_file *m, void *v)
 {
         struct exec_domain      *ep;
-        int                     len = 0;
 
         read_lock(&exec_domains_lock);
-        for (ep = exec_domains; ep && len < PAGE_SIZE - 80; ep = ep->next)
-                len += sprintf(page + len, "%d-%d\t%-16s\t[%s]\n",
+        for (ep = exec_domains; ep; ep = ep->next)
+                seq_printf(m, "%d-%d\t%-16s\t[%s]\n",
                                ep->pers_low, ep->pers_high, ep->name,
                                module_name(ep->module));
         read_unlock(&exec_domains_lock);
-        return (len);
+        return 0;
+}
+
+static int execdomains_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, execdomains_proc_show, NULL);
+}
+
+static const struct file_operations execdomains_proc_fops = {
+        .open           = execdomains_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static int __init proc_execdomains_init(void)
+{
+        proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
+        return 0;
 }
+module_init(proc_execdomains_init);
+#endif
 
 asmlinkage long
 sys_personality(u_long personality)