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Date: Thu, 20 Sep 2012 04:41:55 -0700
From: "Eric W. Biederman" <ebiederm@...ssion.com>
To: <linux-fsdevel@...r.kernel.org>
Cc: <linux-kernel@...r.kernel.org>, Serge Hallyn <serge@...lyn.com>,
Linux Containers <containers@...ts.linux-foundation.org>,
"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 14/25] userns: Convert hfsplus to use kuid and kgid where appropriate
From: "Eric W. Biederman" <ebiederm@...ssion.com>
Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
fs/hfsplus/catalog.c | 4 ++--
fs/hfsplus/hfsplus_fs.h | 4 ++--
fs/hfsplus/inode.c | 8 ++++----
fs/hfsplus/options.c | 15 ++++++++++++---
init/Kconfig | 1 -
5 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
index ec2a9c2..798d9c4 100644
--- a/fs/hfsplus/catalog.c
+++ b/fs/hfsplus/catalog.c
@@ -80,8 +80,8 @@ void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
perms->userflags = HFSPLUS_I(inode)->userflags;
perms->mode = cpu_to_be16(inode->i_mode);
- perms->owner = cpu_to_be32(inode->i_uid);
- perms->group = cpu_to_be32(inode->i_gid);
+ perms->owner = cpu_to_be32(i_uid_read(inode));
+ perms->group = cpu_to_be32(i_gid_read(inode));
if (S_ISREG(inode->i_mode))
perms->dev = cpu_to_be32(inode->i_nlink);
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 558dbb4..c571de2 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -149,8 +149,8 @@ struct hfsplus_sb_info {
u32 type;
umode_t umask;
- uid_t uid;
- gid_t gid;
+ kuid_t uid;
+ kgid_t gid;
int part, session;
unsigned long flags;
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 3d8b4a6..2172aa5 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -233,12 +233,12 @@ static void hfsplus_get_perms(struct inode *inode,
mode = be16_to_cpu(perms->mode);
- inode->i_uid = be32_to_cpu(perms->owner);
- if (!inode->i_uid && !mode)
+ i_uid_write(inode, be32_to_cpu(perms->owner));
+ if (!i_uid_read(inode) && !mode)
inode->i_uid = sbi->uid;
- inode->i_gid = be32_to_cpu(perms->group);
- if (!inode->i_gid && !mode)
+ i_gid_write(inode, be32_to_cpu(perms->group));
+ if (!i_gid_read(inode) && !mode)
inode->i_gid = sbi->gid;
if (dir) {
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 06fa561..ed257c6 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -135,14 +135,22 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
printk(KERN_ERR "hfs: uid requires an argument\n");
return 0;
}
- sbi->uid = (uid_t)tmp;
+ sbi->uid = make_kuid(current_user_ns(), (uid_t)tmp);
+ if (!uid_valid(sbi->uid)) {
+ printk(KERN_ERR "hfs: invalid uid specified\n");
+ return 0;
+ }
break;
case opt_gid:
if (match_int(&args[0], &tmp)) {
printk(KERN_ERR "hfs: gid requires an argument\n");
return 0;
}
- sbi->gid = (gid_t)tmp;
+ sbi->gid = make_kgid(current_user_ns(), (gid_t)tmp);
+ if (!gid_valid(sbi->gid)) {
+ printk(KERN_ERR "hfs: invalid gid specified\n");
+ return 0;
+ }
break;
case opt_part:
if (match_int(&args[0], &sbi->part)) {
@@ -215,7 +223,8 @@ int hfsplus_show_options(struct seq_file *seq, struct dentry *root)
if (sbi->type != HFSPLUS_DEF_CR_TYPE)
seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask,
- sbi->uid, sbi->gid);
+ from_kuid_munged(&init_user_ns, sbi->uid),
+ from_kgid_munged(&init_user_ns, sbi->gid));
if (sbi->part >= 0)
seq_printf(seq, ",part=%u", sbi->part);
if (sbi->session >= 0)
diff --git a/init/Kconfig b/init/Kconfig
index 6038d64..9cf8cb1 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -943,7 +943,6 @@ config UIDGID_CONVERTED
depends on CODA_FS = n
depends on FUSE_FS = n
depends on GFS2_FS = n
- depends on HFSPLUS_FS = n
depends on HPFS_FS = n
depends on ISO9660_FS = n
depends on JFFS2_FS = n
--
1.7.5.4
--
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