1 files changed, 0 insertions, 394 deletions
diff --git a/ANDROID_3.4.5/fs/quota/quota.c b/ANDROID_3.4.5/fs/quota/quota.c
deleted file mode 100644
index 9a391204..00000000
--- a/ANDROID_3.4.5/fs/quota/quota.c
+++ /dev/null
@@ -1,394 +0,0 @@
-/*
- * Quota code necessary even when VFS quota support is not compiled
- * into the kernel.  The interesting stuff is over in dquot.c, here
- * we have symbols for initial quotactl(2) handling, the sysctl(2)
- * variables, etc - things needed even when quota support disabled.
- */
-
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/slab.h>
-#include <asm/current.h>
-#include <asm/uaccess.h>
-#include <linux/kernel.h>
-#include <linux/security.h>
-#include <linux/syscalls.h>
-#include <linux/capability.h>
-#include <linux/quotaops.h>
-#include <linux/types.h>
-#include <linux/writeback.h>
-
-static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
-				     qid_t id)
-{
-	switch (cmd) {
-	/* these commands do not require any special privilegues */
-	case Q_GETFMT:
-	case Q_SYNC:
-	case Q_GETINFO:
-	case Q_XGETQSTAT:
-	case Q_XQUOTASYNC:
-		break;
-	/* allow to query information for dquots we "own" */
-	case Q_GETQUOTA:
-	case Q_XGETQUOTA:
-		if ((type == USRQUOTA && current_euid() == id) ||
-		    (type == GRPQUOTA && in_egroup_p(id)))
-			break;
-		/*FALLTHROUGH*/
-	default:
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-	}
-
-	return security_quotactl(cmd, type, id, sb);
-}
-
-static void quota_sync_one(struct super_block *sb, void *arg)
-{
-	if (sb->s_qcop && sb->s_qcop->quota_sync)
-		sb->s_qcop->quota_sync(sb, *(int *)arg, 1);
-}
-
-static int quota_sync_all(int type)
-{
-	int ret;
-
-	if (type >= MAXQUOTAS)
-		return -EINVAL;
-	ret = security_quotactl(Q_SYNC, type, 0, NULL);
-	if (!ret)
-		iterate_supers(quota_sync_one, &type);
-	return ret;
-}
-
-static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id,
-		         struct path *path)
-{
-	if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_on_meta)
-		return -ENOSYS;
-	if (sb->s_qcop->quota_on_meta)
-		return sb->s_qcop->quota_on_meta(sb, type, id);
-	if (IS_ERR(path))
-		return PTR_ERR(path);
-	return sb->s_qcop->quota_on(sb, type, id, path);
-}
-
-static int quota_getfmt(struct super_block *sb, int type, void __user *addr)
-{
-	__u32 fmt;
-
-	down_read(&sb_dqopt(sb)->dqptr_sem);
-	if (!sb_has_quota_active(sb, type)) {
-		up_read(&sb_dqopt(sb)->dqptr_sem);
-		return -ESRCH;
-	}
-	fmt = sb_dqopt(sb)->info[type].dqi_format->qf_fmt_id;
-	up_read(&sb_dqopt(sb)->dqptr_sem);
-	if (copy_to_user(addr, &fmt, sizeof(fmt)))
-		return -EFAULT;
-	return 0;
-}
-
-static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
-{
-	struct if_dqinfo info;
-	int ret;
-
-	if (!sb->s_qcop->get_info)
-		return -ENOSYS;
-	ret = sb->s_qcop->get_info(sb, type, &info);
-	if (!ret && copy_to_user(addr, &info, sizeof(info)))
-		return -EFAULT;
-	return ret;
-}
-
-static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
-{
-	struct if_dqinfo info;
-
-	if (copy_from_user(&info, addr, sizeof(info)))
-		return -EFAULT;
-	if (!sb->s_qcop->set_info)
-		return -ENOSYS;
-	return sb->s_qcop->set_info(sb, type, &info);
-}
-
-static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src)
-{
-	dst->dqb_bhardlimit = src->d_blk_hardlimit;
-	dst->dqb_bsoftlimit = src->d_blk_softlimit;
-	dst->dqb_curspace = src->d_bcount;
-	dst->dqb_ihardlimit = src->d_ino_hardlimit;
-	dst->dqb_isoftlimit = src->d_ino_softlimit;
-	dst->dqb_curinodes = src->d_icount;
-	dst->dqb_btime = src->d_btimer;
-	dst->dqb_itime = src->d_itimer;
-	dst->dqb_valid = QIF_ALL;
-}
-
-static int quota_getquota(struct super_block *sb, int type, qid_t id,
-			  void __user *addr)
-{
-	struct fs_disk_quota fdq;
-	struct if_dqblk idq;
-	int ret;
-
-	if (!sb->s_qcop->get_dqblk)
-		return -ENOSYS;
-	ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
-	if (ret)
-		return ret;
-	copy_to_if_dqblk(&idq, &fdq);
-	if (copy_to_user(addr, &idq, sizeof(idq)))
-		return -EFAULT;
-	return 0;
-}
-
-static void copy_from_if_dqblk(struct fs_disk_quota *dst, struct if_dqblk *src)
-{
-	dst->d_blk_hardlimit = src->dqb_bhardlimit;
-	dst->d_blk_softlimit  = src->dqb_bsoftlimit;
-	dst->d_bcount = src->dqb_curspace;
-	dst->d_ino_hardlimit = src->dqb_ihardlimit;
-	dst->d_ino_softlimit = src->dqb_isoftlimit;
-	dst->d_icount = src->dqb_curinodes;
-	dst->d_btimer = src->dqb_btime;
-	dst->d_itimer = src->dqb_itime;
-
-	dst->d_fieldmask = 0;
-	if (src->dqb_valid & QIF_BLIMITS)
-		dst->d_fieldmask |= FS_DQ_BSOFT | FS_DQ_BHARD;
-	if (src->dqb_valid & QIF_SPACE)
-		dst->d_fieldmask |= FS_DQ_BCOUNT;
-	if (src->dqb_valid & QIF_ILIMITS)
-		dst->d_fieldmask |= FS_DQ_ISOFT | FS_DQ_IHARD;
-	if (src->dqb_valid & QIF_INODES)
-		dst->d_fieldmask |= FS_DQ_ICOUNT;
-	if (src->dqb_valid & QIF_BTIME)
-		dst->d_fieldmask |= FS_DQ_BTIMER;
-	if (src->dqb_valid & QIF_ITIME)
-		dst->d_fieldmask |= FS_DQ_ITIMER;
-}
-
-static int quota_setquota(struct super_block *sb, int type, qid_t id,
-			  void __user *addr)
-{
-	struct fs_disk_quota fdq;
-	struct if_dqblk idq;
-
-	if (copy_from_user(&idq, addr, sizeof(idq)))
-		return -EFAULT;
-	if (!sb->s_qcop->set_dqblk)
-		return -ENOSYS;
-	copy_from_if_dqblk(&fdq, &idq);
-	return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
-}
-
-static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr)
-{
-	__u32 flags;
-
-	if (copy_from_user(&flags, addr, sizeof(flags)))
-		return -EFAULT;
-	if (!sb->s_qcop->set_xstate)
-		return -ENOSYS;
-	return sb->s_qcop->set_xstate(sb, flags, cmd);
-}
-
-static int quota_getxstate(struct super_block *sb, void __user *addr)
-{
-	struct fs_quota_stat fqs;
-	int ret;
-
-	if (!sb->s_qcop->get_xstate)
-		return -ENOSYS;
-	ret = sb->s_qcop->get_xstate(sb, &fqs);
-	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
-		return -EFAULT;
-	return ret;
-}
-
-static int quota_setxquota(struct super_block *sb, int type, qid_t id,
-			   void __user *addr)
-{
-	struct fs_disk_quota fdq;
-
-	if (copy_from_user(&fdq, addr, sizeof(fdq)))
-		return -EFAULT;
-	if (!sb->s_qcop->set_dqblk)
-		return -ENOSYS;
-	return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
-}
-
-static int quota_getxquota(struct super_block *sb, int type, qid_t id,
-			   void __user *addr)
-{
-	struct fs_disk_quota fdq;
-	int ret;
-
-	if (!sb->s_qcop->get_dqblk)
-		return -ENOSYS;
-	ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
-	if (!ret && copy_to_user(addr, &fdq, sizeof(fdq)))
-		return -EFAULT;
-	return ret;
-}
-
-/* Copy parameters and call proper function */
-static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
-		       void __user *addr, struct path *path)
-{
-	int ret;
-
-	if (type >= (XQM_COMMAND(cmd) ? XQM_MAXQUOTAS : MAXQUOTAS))
-		return -EINVAL;
-	if (!sb->s_qcop)
-		return -ENOSYS;
-
-	ret = check_quotactl_permission(sb, type, cmd, id);
-	if (ret < 0)
-		return ret;
-
-	switch (cmd) {
-	case Q_QUOTAON:
-		return quota_quotaon(sb, type, cmd, id, path);
-	case Q_QUOTAOFF:
-		if (!sb->s_qcop->quota_off)
-			return -ENOSYS;
-		return sb->s_qcop->quota_off(sb, type);
-	case Q_GETFMT:
-		return quota_getfmt(sb, type, addr);
-	case Q_GETINFO:
-		return quota_getinfo(sb, type, addr);
-	case Q_SETINFO:
-		return quota_setinfo(sb, type, addr);
-	case Q_GETQUOTA:
-		return quota_getquota(sb, type, id, addr);
-	case Q_SETQUOTA:
-		return quota_setquota(sb, type, id, addr);
-	case Q_SYNC:
-		if (!sb->s_qcop->quota_sync)
-			return -ENOSYS;
-		return sb->s_qcop->quota_sync(sb, type, 1);
-	case Q_XQUOTAON:
-	case Q_XQUOTAOFF:
-	case Q_XQUOTARM:
-		return quota_setxstate(sb, cmd, addr);
-	case Q_XGETQSTAT:
-		return quota_getxstate(sb, addr);
-	case Q_XSETQLIM:
-		return quota_setxquota(sb, type, id, addr);
-	case Q_XGETQUOTA:
-		return quota_getxquota(sb, type, id, addr);
-	case Q_XQUOTASYNC:
-		if (sb->s_flags & MS_RDONLY)
-			return -EROFS;
-		/* XFS quotas are fully coherent now, making this call a noop */
-		return 0;
-	default:
-		return -EINVAL;
-	}
-}
-
-/* Return 1 if 'cmd' will block on frozen filesystem */
-static int quotactl_cmd_write(int cmd)
-{
-	switch (cmd) {
-	case Q_GETFMT:
-	case Q_GETINFO:
-	case Q_SYNC:
-	case Q_XGETQSTAT:
-	case Q_XGETQUOTA:
-	case Q_XQUOTASYNC:
-		return 0;
-	}
-	return 1;
-}
-
-/*
- * look up a superblock on which quota ops will be performed
- * - use the name of a block device to find the superblock thereon
- */
-static struct super_block *quotactl_block(const char __user *special, int cmd)
-{
-#ifdef CONFIG_BLOCK
-	struct block_device *bdev;
-	struct super_block *sb;
-	char *tmp = getname(special);
-
-	if (IS_ERR(tmp))
-		return ERR_CAST(tmp);
-	bdev = lookup_bdev(tmp);
-	putname(tmp);
-	if (IS_ERR(bdev))
-		return ERR_CAST(bdev);
-	if (quotactl_cmd_write(cmd))
-		sb = get_super_thawed(bdev);
-	else
-		sb = get_super(bdev);
-	bdput(bdev);
-	if (!sb)
-		return ERR_PTR(-ENODEV);
-
-	return sb;
-#else
-	return ERR_PTR(-ENODEV);
-#endif
-}
-
-/*
- * This is the system call interface. This communicates with
- * the user-level programs. Currently this only supports diskquota
- * calls. Maybe we need to add the process quotas etc. in the future,
- * but we probably should use rlimits for that.
- */
-SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
-		qid_t, id, void __user *, addr)
-{
-	uint cmds, type;
-	struct super_block *sb = NULL;
-	struct path path, *pathp = NULL;
-	int ret;
-
-	cmds = cmd >> SUBCMDSHIFT;
-	type = cmd & SUBCMDMASK;
-
-	/*
-	 * As a special case Q_SYNC can be called without a specific device.
-	 * It will iterate all superblocks that have quota enabled and call
-	 * the sync action on each of them.
-	 */
-	if (!special) {
-		if (cmds == Q_SYNC)
-			return quota_sync_all(type);
-		return -ENODEV;
-	}
-
-	/*
-	 * Path for quotaon has to be resolved before grabbing superblock
-	 * because that gets s_umount sem which is also possibly needed by path
-	 * resolution (think about autofs) and thus deadlocks could arise.
-	 */
-	if (cmds == Q_QUOTAON) {
-		ret = user_path_at(AT_FDCWD, addr, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path);
-		if (ret)
-			pathp = ERR_PTR(ret);
-		else
-			pathp = &path;
-	}
-
-	sb = quotactl_block(special, cmds);
-	if (IS_ERR(sb)) {
-		ret = PTR_ERR(sb);
-		goto out;
-	}
-
-	ret = do_quotactl(sb, type, cmds, id, addr, pathp);
-
-	drop_super(sb);
-out:
-	if (pathp && !IS_ERR(pathp))
-		path_put(pathp);
-	return ret;
-}