X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fproc%2Finode.c;h=5b0367f6845a365c7e54c4ce36cd238e205bfdbe;hb=refs%2Fheads%2Fvserver;hp=b4d3e54809c27843e1a9008f4dd215a82176ce6c;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index b4d3e5480..5b0367f68 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -14,13 +14,12 @@
 #include <linux/limits.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/parser.h>
 #include <linux/smp_lock.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
 
-extern void free_proc_entry(struct proc_dir_entry *);
+#include "internal.h"
 
 static inline struct proc_dir_entry * de_get(struct proc_dir_entry *de)
 {
@@ -59,12 +58,11 @@ static void de_put(struct proc_dir_entry *de)
 static void proc_delete_inode(struct inode *inode)
 {
 	struct proc_dir_entry *de;
-	struct task_struct *tsk;
 
-	/* Let go of any associated process */
-	tsk = PROC_I(inode)->task;
-	if (tsk)
-		put_task_struct(tsk);
+	truncate_inode_pages(&inode->i_data, 0);
+
+	/* Stop tracking associated processes */
+	put_pid(PROC_I(inode)->pid);
 
 	/* Let go of any associated proc directory entry */
 	de = PROC_I(inode)->pde;
@@ -83,18 +81,18 @@ static void proc_read_inode(struct inode * inode)
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
 }
 
-static kmem_cache_t * proc_inode_cachep;
+static struct kmem_cache * proc_inode_cachep;
 
 static struct inode *proc_alloc_inode(struct super_block *sb)
 {
 	struct proc_inode *ei;
 	struct inode *inode;
 
-	ei = (struct proc_inode *)kmem_cache_alloc(proc_inode_cachep, SLAB_KERNEL);
+	ei = (struct proc_inode *)kmem_cache_alloc(proc_inode_cachep, GFP_KERNEL);
 	if (!ei)
 		return NULL;
-	ei->task = NULL;
-	ei->type = 0;
+	ei->pid = NULL;
+	ei->fd = 0;
 	ei->op.proc_get_link = NULL;
 	ei->pde = NULL;
 	inode = &ei->vfs_inode;
@@ -107,7 +105,7 @@ static void proc_destroy_inode(struct inode *inode)
 	kmem_cache_free(proc_inode_cachep, PROC_I(inode));
 }
 
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
 {
 	struct proc_inode *ei = (struct proc_inode *) foo;
 
@@ -120,7 +118,8 @@ int __init proc_init_inodecache(void)
 {
 	proc_inode_cachep = kmem_cache_create("proc_inode_cache",
 					     sizeof(struct proc_inode),
-					     0, SLAB_RECLAIM_ACCOUNT,
+					     0, (SLAB_RECLAIM_ACCOUNT|
+						SLAB_MEM_SPREAD),
 					     init_once, NULL);
 	if (proc_inode_cachep == NULL)
 		return -ENOMEM;
@@ -143,51 +142,6 @@ static struct super_operations proc_sops = {
 	.remount_fs	= proc_remount,
 };
 
-enum {
-	Opt_uid, Opt_gid, Opt_err
-};
-
-static match_table_t tokens = {
-	{Opt_uid, "uid=%u"},
-	{Opt_gid, "gid=%u"},
-	{Opt_err, NULL}
-};
-
-static int parse_options(char *options,uid_t *uid,gid_t *gid)
-{
-	char *p;
-	int option;
-
-	*uid = current->uid;
-	*gid = current->gid;
-	if (!options)
-		return 1;
-
-	while ((p = strsep(&options, ",")) != NULL) {
-		substring_t args[MAX_OPT_ARGS];
-		int token;
-		if (!*p)
-			continue;
-
-		token = match_token(p, tokens, args);
-		switch (token) {
-		case Opt_uid:
-			if (match_int(args, &option))
-				return 0;
-			*uid = option;
-			break;
-		case Opt_gid:
-			if (match_int(args, &option))
-				return 0;
-			*gid = option;
-			break;
-		default:
-			return 0;
-		}
-	}
-	return 1;
-}
-
 struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
 				struct proc_dir_entry *de)
 {
@@ -200,10 +154,13 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
 
 	WARN_ON(de && de->deleted);
 
+	if (de != NULL && !try_module_get(de->owner))
+		goto out_mod;
+
 	inode = iget(sb, ino);
 	if (!inode)
-		goto out_fail;
-	
+		goto out_ino;
+
 	PROC_I(inode)->pde = de;
 	if (de) {
 		if (de->mode) {
@@ -217,43 +174,41 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
 			inode->i_size = de->size;
 		if (de->nlink)
 			inode->i_nlink = de->nlink;
-		if (!try_module_get(de->owner))
-			goto out_fail;
 		if (de->proc_iops)
 			inode->i_op = de->proc_iops;
 		if (de->proc_fops)
 			inode->i_fop = de->proc_fops;
 	}
 
-out:
 	return inode;
 
-out_fail:
+out_ino:
+	if (de != NULL)
+		module_put(de->owner);
+out_mod:
 	de_put(de);
-	goto out;
+	return NULL;
 }			
 
 int proc_fill_super(struct super_block *s, void *data, int silent)
 {
 	struct inode * root_inode;
 
-	s->s_flags |= MS_NODIRATIME;
+	s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC;
 	s->s_blocksize = 1024;
 	s->s_blocksize_bits = 10;
 	s->s_magic = PROC_SUPER_MAGIC;
 	s->s_op = &proc_sops;
+	s->s_time_gran = 1;
 	
 	root_inode = proc_get_inode(s, PROC_ROOT_INO, &proc_root);
 	if (!root_inode)
 		goto out_no_root;
-	/*
-	 * Fixup the root inode's nlink value
-	 */
-	root_inode->i_nlink += nr_processes();
+	root_inode->i_uid = 0;
+	root_inode->i_gid = 0;
 	s->s_root = d_alloc_root(root_inode);
 	if (!s->s_root)
 		goto out_no_root;
-	parse_options(data, &root_inode->i_uid, &root_inode->i_gid);
 	return 0;
 
 out_no_root: