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Commit cc41a536 authored by Richard Weinberger's avatar Richard Weinberger
Browse files

ubifs: Use a random number for cookies 



Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 528e3d17

fs/ubifs/journal.c

+3 −0
Original line number Diff line number Diff line
@@ -589,6 +589,7 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir, 
	dent->nlen = cpu_to_le16(fname_len(nm));

	memcpy(dent->name, fname_name(nm), fname_len(nm));

	dent->name[fname_len(nm)] = '\0';

	dent->cookie = prandom_u32();



	zero_dent_node_unused(dent);

	ubifs_prep_grp_node(c, dent, dlen, 0);
@@ -1124,6 +1125,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir, 
	dent->nlen = cpu_to_le16(fname_len(new_nm));

	memcpy(dent->name, fname_name(new_nm), fname_len(new_nm));

	dent->name[fname_len(new_nm)] = '\0';

	dent->cookie = prandom_u32();

	zero_dent_node_unused(dent);

	ubifs_prep_grp_node(c, dent, dlen1, 0);
@@ -1142,6 +1144,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir, 
	dent2->nlen = cpu_to_le16(fname_len(old_nm));

	memcpy(dent2->name, fname_name(old_nm), fname_len(old_nm));

	dent2->name[fname_len(old_nm)] = '\0';

	dent2->cookie = prandom_u32();

	zero_dent_node_unused(dent2);

	ubifs_prep_grp_node(c, dent2, dlen2, 0);

fs/ubifs/ubifs.h

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/security.h>

#include <linux/xattr.h>

#include <linux/fscrypto.h>

#include <linux/random.h>

#include "ubifs-media.h"



/* Version of this UBIFS implementation */