/*
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* quota.c --- code for handling ext4 quota inodes
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*
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*/
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#include "config.h"
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#ifdef HAVE_SYS_MOUNT_H
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#include <sys/param.h>
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#include <sys/mount.h>
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#define MNT_FL (MS_MGC_VAL | MS_RDONLY)
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include "e2fsck.h"
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#include "problem.h"
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static errcode_t move_quota_inode(ext2_filsys fs, ext2_ino_t from_ino,
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ext2_ino_t to_ino, enum quota_type qtype)
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{
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struct ext2_inode inode;
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errcode_t retval;
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char qf_name[QUOTA_NAME_LEN];
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/* We need the inode bitmap to be loaded */
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retval = ext2fs_read_bitmaps(fs);
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if (retval) {
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com_err("ext2fs_read_bitmaps", retval, "%s",
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_("in move_quota_inode"));
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return retval;
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}
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retval = ext2fs_read_inode(fs, from_ino, &inode);
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if (retval) {
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com_err("ext2fs_read_inode", retval, "%s",
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_("in move_quota_inode"));
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return retval;
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}
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inode.i_links_count = 1;
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inode.i_mode = LINUX_S_IFREG | 0600;
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inode.i_flags = EXT2_IMMUTABLE_FL;
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if (ext2fs_has_feature_extents(fs->super))
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inode.i_flags |= EXT4_EXTENTS_FL;
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retval = ext2fs_write_new_inode(fs, to_ino, &inode);
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if (retval) {
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com_err("ext2fs_write_new_inode", retval, "%s",
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_("in move_quota_inode"));
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return retval;
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}
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/* unlink the old inode */
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quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
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retval = ext2fs_unlink(fs, EXT2_ROOT_INO, qf_name, from_ino, 0);
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if (retval) {
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com_err("ext2fs_unlink", retval, "%s",
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_("in move_quota_inode"));
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return retval;
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}
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ext2fs_inode_alloc_stats(fs, from_ino, -1);
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/* Clear out the original inode in the inode-table block. */
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memset(&inode, 0, sizeof(struct ext2_inode));
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ext2fs_write_inode(fs, from_ino, &inode);
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return 0;
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}
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void e2fsck_hide_quota(e2fsck_t ctx)
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{
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struct ext2_super_block *sb = ctx->fs->super;
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struct problem_context pctx;
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ext2_filsys fs = ctx->fs;
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enum quota_type qtype;
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ext2_ino_t quota_ino;
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clear_problem_context(&pctx);
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if ((ctx->options & E2F_OPT_READONLY) ||
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!ext2fs_has_feature_quota(sb))
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return;
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for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
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pctx.dir = 2; /* This is a guess, but it's a good one */
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pctx.ino = *quota_sb_inump(sb, qtype);
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pctx.num = qtype;
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quota_ino = quota_type2inum(qtype, fs->super);
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if (pctx.ino && (pctx.ino != quota_ino) &&
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fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
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if (move_quota_inode(fs, pctx.ino, quota_ino, qtype))
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continue;
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*quota_sb_inump(sb, qtype) = quota_ino;
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ext2fs_mark_super_dirty(fs);
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}
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}
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return;
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}
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void e2fsck_validate_quota_inodes(e2fsck_t ctx)
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{
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struct ext2_super_block *sb = ctx->fs->super;
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struct problem_context pctx;
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ext2_filsys fs = ctx->fs;
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enum quota_type qtype;
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clear_problem_context(&pctx);
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for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
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pctx.ino = *quota_sb_inump(sb, qtype);
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pctx.num = qtype;
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if (pctx.ino &&
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((pctx.ino == EXT2_BAD_INO) ||
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(pctx.ino == EXT2_ROOT_INO) ||
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(pctx.ino == EXT2_BOOT_LOADER_INO) ||
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(pctx.ino == EXT2_UNDEL_DIR_INO) ||
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(pctx.ino == EXT2_RESIZE_INO) ||
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(pctx.ino == EXT2_JOURNAL_INO) ||
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(pctx.ino == EXT2_EXCLUDE_INO) ||
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(pctx.ino == EXT4_REPLICA_INO) ||
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(pctx.ino > fs->super->s_inodes_count)) &&
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fix_problem(ctx, PR_0_INVALID_QUOTA_INO, &pctx)) {
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*quota_sb_inump(sb, qtype) = 0;
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ext2fs_mark_super_dirty(fs);
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}
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}
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}
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