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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-02-07 15:41:24 -0800 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-05-15 14:59:27 -0700 |
| commit | 1523299d5817773e344d135d4b1c485f269400bc (patch) | |
| tree | eef0768f5418facb1d37dbe99f346b9d77223f9f /fs/ext3/super.c | |
| parent | b8a9f9e183229d163d8ace855cbbb63c209fba3c (diff) | |
| download | op-kernel-dev-1523299d5817773e344d135d4b1c485f269400bc.zip op-kernel-dev-1523299d5817773e344d135d4b1c485f269400bc.tar.gz | |
userns: Convert ext3 to use kuid/kgid where appropriate
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/ext3/super.c')
| -rw-r--r-- | fs/ext3/super.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c index cf0b592..94ef7e6 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -617,13 +617,15 @@ static int ext3_show_options(struct seq_file *seq, struct dentry *root) seq_puts(seq, ",grpid"); if (!test_opt(sb, GRPID) && (def_mount_opts & EXT3_DEFM_BSDGROUPS)) seq_puts(seq, ",nogrpid"); - if (sbi->s_resuid != EXT3_DEF_RESUID || + if (!uid_eq(sbi->s_resuid, make_kuid(&init_user_ns, EXT3_DEF_RESUID)) || le16_to_cpu(es->s_def_resuid) != EXT3_DEF_RESUID) { - seq_printf(seq, ",resuid=%u", sbi->s_resuid); + seq_printf(seq, ",resuid=%u", + from_kuid_munged(&init_user_ns, sbi->s_resuid)); } - if (sbi->s_resgid != EXT3_DEF_RESGID || + if (!gid_eq(sbi->s_resgid, make_kgid(&init_user_ns, EXT3_DEF_RESGID)) || le16_to_cpu(es->s_def_resgid) != EXT3_DEF_RESGID) { - seq_printf(seq, ",resgid=%u", sbi->s_resgid); + seq_printf(seq, ",resgid=%u", + from_kgid_munged(&init_user_ns, sbi->s_resgid)); } if (test_opt(sb, ERRORS_RO)) { int def_errors = le16_to_cpu(es->s_errors); @@ -967,6 +969,8 @@ static int parse_options (char *options, struct super_block *sb, substring_t args[MAX_OPT_ARGS]; int data_opt = 0; int option; + kuid_t uid; + kgid_t gid; #ifdef CONFIG_QUOTA int qfmt; #endif @@ -1000,12 +1004,23 @@ static int parse_options (char *options, struct super_block *sb, case Opt_resuid: if (match_int(&args[0], &option)) return 0; - sbi->s_resuid = option; + uid = make_kuid(current_user_ns(), option); + if (!uid_valid(uid)) { + ext3_msg(sb, KERN_ERR, "Invalid uid value %d", option); + return -1; + + } + sbi->s_resuid = uid; break; case Opt_resgid: if (match_int(&args[0], &option)) return 0; - sbi->s_resgid = option; + gid = make_kgid(current_user_ns(), option); + if (!gid_valid(gid)) { + ext3_msg(sb, KERN_ERR, "Invalid gid value %d", option); + return -1; + } + sbi->s_resgid = gid; break; case Opt_sb: /* handled by get_sb_block() instead of here */ @@ -1651,8 +1666,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) } sb->s_fs_info = sbi; sbi->s_mount_opt = 0; - sbi->s_resuid = EXT3_DEF_RESUID; - sbi->s_resgid = EXT3_DEF_RESGID; + sbi->s_resuid = make_kuid(&init_user_ns, EXT3_DEF_RESUID); + sbi->s_resgid = make_kgid(&init_user_ns, EXT3_DEF_RESGID); sbi->s_sb_block = sb_block; blocksize = sb_min_blocksize(sb, EXT3_MIN_BLOCK_SIZE); @@ -1716,8 +1731,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) else set_opt(sbi->s_mount_opt, ERRORS_RO); - sbi->s_resuid = le16_to_cpu(es->s_def_resuid); - sbi->s_resgid = le16_to_cpu(es->s_def_resgid); + sbi->s_resuid = make_kuid(&init_user_ns, le16_to_cpu(es->s_def_resuid)); + sbi->s_resgid = make_kgid(&init_user_ns, le16_to_cpu(es->s_def_resgid)); /* enable barriers by default */ set_opt(sbi->s_mount_opt, BARRIER); |
