From: "Aneesh Kumar K.V" Subject: [PATCH -V5 24/24] ext4: Add temporary richacl mount option for ext4 Date: Wed, 23 Feb 2011 19:22:11 +0530 Message-ID: <1298469131-16555-25-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1298469131-16555-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Cc: aneesh.kumar@linux.vnet.ibm.com, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org To: sfrench@us.ibm.com, agruen@linbit.com, dilger.kernel@dilger.ca, sandeen@redhat.com, tytso@mit.edu, bfields@fieldses.org, jlayton@redhat.com Return-path: In-Reply-To: <1298469131-16555-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org This helps in easy testing of the patchset. The mount option will be later removed in favour of a feature flag. ***Should be folded before merging*** Signed-off-by: Aneesh Kumar K.V --- fs/ext4/super.c | 52 +++++++++++++++++++++++++++++++++++++++++----------- 1 files changed, 41 insertions(+), 11 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index adc97b7..9f3fe61 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1011,6 +1011,10 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) if (!(sb->s_flags & MS_POSIXACL) && (def_mount_opts & EXT4_DEFM_ACL)) seq_puts(seq, ",noacl"); #endif +#ifdef CONFIG_EXT4_FS_RICHACL + if (sb->s_flags & MS_RICHACL) + seq_puts(seq, ",richacl"); +#endif if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) { seq_printf(seq, ",commit=%u", (unsigned) (sbi->s_commit_interval / HZ)); @@ -1262,6 +1266,7 @@ enum { Opt_dioread_nolock, Opt_dioread_lock, Opt_discard, Opt_nodiscard, Opt_init_inode_table, Opt_noinit_inode_table, + Opt_richacl, }; static const match_table_t tokens = { @@ -1337,6 +1342,7 @@ static const match_table_t tokens = { {Opt_init_inode_table, "init_itable=%u"}, {Opt_init_inode_table, "init_itable"}, {Opt_noinit_inode_table, "noinit_itable"}, + {Opt_richacl, "richacl"}, {Opt_err, NULL}, }; @@ -1363,6 +1369,35 @@ static ext4_fsblk_t get_sb_block(void **data) return sb_block; } +static void enable_acl(struct super_block *sb) +{ +#if !defined(CONFIG_EXT4_FS_POSIX_ACL) + ext4_msg(sb, KERN_ERR, "acl options not supported"); + return; +#endif + sb->s_flags |= MS_POSIXACL; +} + +static void disable_acl(struct super_block *sb) +{ +#if !defined(CONFIG_EXT4_FS_POSIX_ACL) + ext4_msg(sb, KERN_ERR, "acl options not supported"); + return; +#endif + sb->s_flags &= ~MS_POSIXACL; + return; +} + +static void enable_richacl(struct super_block *sb) +{ +#if !defined(CONFIG_EXT4_FS_RICHACL) + ext4_msg(sb, KERN_ERR, "richacl options not supported"); + return; +#endif + sb->s_flags |= MS_RICHACL; + return; +} + #define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3)) static char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n" "Contact linux-ext4@vger.kernel.org if you think we should keep it.\n"; @@ -1527,19 +1562,12 @@ static int parse_options(char *options, struct super_block *sb, ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported"); break; #endif -#ifdef CONFIG_EXT4_FS_POSIX_ACL case Opt_acl: - sb->s_flags |= MS_POSIXACL; + enable_acl(sb); break; case Opt_noacl: - sb->s_flags &= ~MS_POSIXACL; + disable_acl(sb); break; -#else - case Opt_acl: - case Opt_noacl: - ext4_msg(sb, KERN_ERR, "(no)acl options not supported"); - break; -#endif case Opt_journal_update: /* @@@ FIXME */ /* Eventually we will want to be able to create @@ -1826,6 +1854,8 @@ set_qf_format: break; case Opt_noinit_inode_table: clear_opt(sb, INIT_INODE_TABLE); + case Opt_richacl: + enable_richacl(sb); break; default: ext4_msg(sb, KERN_ERR, @@ -3099,9 +3129,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (def_mount_opts & EXT4_DEFM_XATTR_USER) set_opt(sb, XATTR_USER); #endif -#ifdef CONFIG_EXT4_FS_POSIX_ACL +#if defined(CONFIG_EXT4_FS_POSIX_ACL) if (def_mount_opts & EXT4_DEFM_ACL) - sb->s_flags |= MS_POSIXACL; + enable_acl(sb); #endif if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA) set_opt(sb, JOURNAL_DATA); -- 1.7.1