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author | Dmitry Monakhov <dmonakhov@openvz.org> | 2010-02-16 08:31:50 +0300 |
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committer | Jan Kara <jack@suse.cz> | 2010-03-05 00:20:26 +0100 |
commit | 8ddd69d6df4758bf0cab981481af24cc84419567 (patch) | |
tree | 126eb5877e092963b7ed1cf143e3ce0bac6a7c85 /fs/quota/dquot.c | |
parent | ad1e6e8da9fe8cb7ecfde8eabacedc3b50fceae4 (diff) | |
download | kernel_samsung_tuna-8ddd69d6df4758bf0cab981481af24cc84419567.zip kernel_samsung_tuna-8ddd69d6df4758bf0cab981481af24cc84419567.tar.gz kernel_samsung_tuna-8ddd69d6df4758bf0cab981481af24cc84419567.tar.bz2 |
quota: generalize quota transfer interface
Current quota transfer interface support only uid/gid.
This patch extend interface in order to support various quotas types
The goal is accomplished without changes in most frequently used
vfs_dq_transfer() func.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota/dquot.c')
-rw-r--r-- | fs/quota/dquot.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 5a831dc..4d2041f 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1695,15 +1695,13 @@ EXPORT_SYMBOL(dquot_free_inode); * This operation can block, but only after everything is updated * A transaction must be started when entering this function. */ -int dquot_transfer(struct inode *inode, struct iattr *iattr) +int dquot_transfer(struct inode *inode, qid_t *chid, unsigned long mask) { qsize_t space, cur_space; qsize_t rsv_space = 0; struct dquot *transfer_from[MAXQUOTAS]; struct dquot *transfer_to[MAXQUOTAS]; int cnt, ret = QUOTA_OK; - int chuid = iattr->ia_valid & ATTR_UID && inode->i_uid != iattr->ia_uid, - chgid = iattr->ia_valid & ATTR_GID && inode->i_gid != iattr->ia_gid; char warntype_to[MAXQUOTAS]; char warntype_from_inodes[MAXQUOTAS], warntype_from_space[MAXQUOTAS]; @@ -1717,13 +1715,10 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr) transfer_to[cnt] = NULL; warntype_to[cnt] = QUOTA_NL_NOWARN; } - if (chuid) - transfer_to[USRQUOTA] = dqget(inode->i_sb, iattr->ia_uid, - USRQUOTA); - if (chgid) - transfer_to[GRPQUOTA] = dqget(inode->i_sb, iattr->ia_gid, - GRPQUOTA); - + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { + if (mask & (1 << cnt)) + transfer_to[cnt] = dqget(inode->i_sb, chid[cnt], cnt); + } down_write(&sb_dqopt(inode->i_sb)->dqptr_sem); if (IS_NOQUOTA(inode)) { /* File without quota accounting? */ up_write(&sb_dqopt(inode->i_sb)->dqptr_sem); @@ -1799,12 +1794,25 @@ over_quota: } EXPORT_SYMBOL(dquot_transfer); -/* Wrapper for transferring ownership of an inode */ +/* Wrapper for transferring ownership of an inode for uid/gid only + * Called from FSXXX_setattr() + */ int vfs_dq_transfer(struct inode *inode, struct iattr *iattr) { + qid_t chid[MAXQUOTAS]; + unsigned long mask = 0; + + if (iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) { + mask |= 1 << USRQUOTA; + chid[USRQUOTA] = iattr->ia_uid; + } + if (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid) { + mask |= 1 << GRPQUOTA; + chid[GRPQUOTA] = iattr->ia_gid; + } if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) { vfs_dq_init(inode); - if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA) + if (inode->i_sb->dq_op->transfer(inode, chid, mask) == NO_QUOTA) return 1; } return 0; |