X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=kernel%2Fexec_domain.c;h=c35452cadded85de8e4505def877b3c5561c991f;hb=260c64d23532caf19abb77e696971da05c388489;hp=3c2eaea66b1e16347bcd564b0c492b8f026dcf21;hpb=6ab3d5624e172c553004ecc862bfeac16d9d68b7;p=safe%2Fjmp%2Flinux-2.6

diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index 3c2eaea..c35452c 100644
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -12,10 +12,13 @@
 #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>
+#include <linux/fs_struct.h>
 
 
 static void default_handler(int, struct pt_regs *);
@@ -57,7 +60,7 @@ lookup_exec_domain(u_long personality)
 {
 	struct exec_domain *	ep;
 	u_long			pers = personality(personality);
-		
+
 	read_lock(&exec_domains_lock);
 	for (ep = exec_domains; ep; ep = ep->next) {
 		if (pers >= ep->pers_low && pers <= ep->pers_high)
@@ -65,7 +68,7 @@ lookup_exec_domain(u_long personality)
 				goto out;
 	}
 
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
 	read_unlock(&exec_domains_lock);
 	request_module("personality-%ld", pers);
 	read_lock(&exec_domains_lock);
@@ -143,54 +146,49 @@ __set_personality(u_long personality)
 		return 0;
 	}
 
-	if (atomic_read(&current->fs->count) != 1) {
-		struct fs_struct *fsp, *ofsp;
-
-		fsp = copy_fs_struct(current->fs);
-		if (fsp == NULL) {
-			module_put(ep->module);
-			return -ENOMEM;
-		}
-
-		task_lock(current);
-		ofsp = current->fs;
-		current->fs = fsp;
-		task_unlock(current);
-
-		put_fs_struct(ofsp);
-	}
-
-	/*
-	 * At that point we are guaranteed to be the sole owner of
-	 * current->fs.
-	 */
-
 	current->personality = personality;
 	oep = current_thread_info()->exec_domain;
 	current_thread_info()->exec_domain = ep;
-	set_fs_altroot();
 
 	module_put(oep->module);
 	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;
 }
 
-asmlinkage long
-sys_personality(u_long personality)
+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
+
+SYSCALL_DEFINE1(personality, u_long, personality)
 {
 	u_long old = current->personality;