mirror of https://gitee.com/openkylin/linux.git
xfs: move xfs_fc_parse_param() above xfs_fc_get_tree()
Grouping the options parsing and mount handling functions above the struct fs_context_operations but below the struct super_operations should improve (some) the grouping of the super operations while also improving the grouping of the options parsing and mount handling code. Lastly move xfs_fc_parse_param() and related functions down to above xfs_fc_get_tree() and it's related functions. But leave the options enum, struct fs_parameter_spec and the struct fs_parameter_description declarations at the top since that's the logical place for them. This is a straight code move, there aren't any functional changes. Signed-off-by: Ian Kent <raven@themaw.net> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Ian Kent
Darrick J. Wong
parent
2f8d66b3cd
commit
8757c38f2c
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@ -111,264 +111,6 @@ static const struct fs_parameter_description xfs_fs_parameters = {
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.specs = xfs_param_specs,
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};
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static int
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suffix_kstrtoint(
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const char *s,
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unsigned int base,
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int *res)
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{
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int last, shift_left_factor = 0, _res;
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char *value;
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int ret = 0;
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value = kstrdup(s, GFP_KERNEL);
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if (!value)
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return -ENOMEM;
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last = strlen(value) - 1;
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if (value[last] == 'K' || value[last] == 'k') {
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shift_left_factor = 10;
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value[last] = '\0';
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}
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if (value[last] == 'M' || value[last] == 'm') {
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shift_left_factor = 20;
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value[last] = '\0';
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}
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if (value[last] == 'G' || value[last] == 'g') {
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shift_left_factor = 30;
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value[last] = '\0';
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}
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if (kstrtoint(value, base, &_res))
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ret = -EINVAL;
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kfree(value);
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*res = _res << shift_left_factor;
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return ret;
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}
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/*
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* Set mount state from a mount option.
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*
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* NOTE: mp->m_super is NULL here!
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*/
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static int
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xfs_fc_parse_param(
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struct fs_context *fc,
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struct fs_parameter *param)
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{
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struct xfs_mount *mp = fc->s_fs_info;
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struct fs_parse_result result;
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int size = 0;
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int opt;
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opt = fs_parse(fc, &xfs_fs_parameters, param, &result);
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if (opt < 0)
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return opt;
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switch (opt) {
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case Opt_logbufs:
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mp->m_logbufs = result.uint_32;
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return 0;
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case Opt_logbsize:
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if (suffix_kstrtoint(param->string, 10, &mp->m_logbsize))
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return -EINVAL;
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return 0;
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case Opt_logdev:
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kfree(mp->m_logname);
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mp->m_logname = kstrdup(param->string, GFP_KERNEL);
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if (!mp->m_logname)
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return -ENOMEM;
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return 0;
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case Opt_rtdev:
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kfree(mp->m_rtname);
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mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
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if (!mp->m_rtname)
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return -ENOMEM;
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return 0;
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case Opt_allocsize:
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if (suffix_kstrtoint(param->string, 10, &size))
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return -EINVAL;
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mp->m_allocsize_log = ffs(size) - 1;
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mp->m_flags |= XFS_MOUNT_ALLOCSIZE;
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return 0;
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case Opt_grpid:
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case Opt_bsdgroups:
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mp->m_flags |= XFS_MOUNT_GRPID;
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return 0;
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case Opt_nogrpid:
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case Opt_sysvgroups:
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mp->m_flags &= ~XFS_MOUNT_GRPID;
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return 0;
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case Opt_wsync:
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mp->m_flags |= XFS_MOUNT_WSYNC;
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return 0;
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case Opt_norecovery:
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mp->m_flags |= XFS_MOUNT_NORECOVERY;
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return 0;
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case Opt_noalign:
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mp->m_flags |= XFS_MOUNT_NOALIGN;
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return 0;
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case Opt_swalloc:
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mp->m_flags |= XFS_MOUNT_SWALLOC;
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return 0;
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case Opt_sunit:
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mp->m_dalign = result.uint_32;
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return 0;
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case Opt_swidth:
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mp->m_swidth = result.uint_32;
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return 0;
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case Opt_inode32:
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mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
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return 0;
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case Opt_inode64:
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mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
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return 0;
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case Opt_nouuid:
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mp->m_flags |= XFS_MOUNT_NOUUID;
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return 0;
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case Opt_ikeep:
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mp->m_flags |= XFS_MOUNT_IKEEP;
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return 0;
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case Opt_noikeep:
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mp->m_flags &= ~XFS_MOUNT_IKEEP;
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return 0;
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case Opt_largeio:
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mp->m_flags |= XFS_MOUNT_LARGEIO;
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return 0;
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case Opt_nolargeio:
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mp->m_flags &= ~XFS_MOUNT_LARGEIO;
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return 0;
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case Opt_attr2:
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mp->m_flags |= XFS_MOUNT_ATTR2;
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return 0;
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case Opt_noattr2:
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mp->m_flags &= ~XFS_MOUNT_ATTR2;
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mp->m_flags |= XFS_MOUNT_NOATTR2;
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return 0;
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case Opt_filestreams:
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mp->m_flags |= XFS_MOUNT_FILESTREAMS;
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return 0;
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case Opt_noquota:
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mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
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mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
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mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
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return 0;
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case Opt_quota:
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case Opt_uquota:
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case Opt_usrquota:
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mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
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XFS_UQUOTA_ENFD);
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return 0;
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case Opt_qnoenforce:
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case Opt_uqnoenforce:
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mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_UQUOTA_ENFD;
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return 0;
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case Opt_pquota:
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case Opt_prjquota:
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mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
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XFS_PQUOTA_ENFD);
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return 0;
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case Opt_pqnoenforce:
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mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_PQUOTA_ENFD;
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return 0;
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case Opt_gquota:
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case Opt_grpquota:
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mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
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XFS_GQUOTA_ENFD);
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return 0;
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case Opt_gqnoenforce:
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mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_GQUOTA_ENFD;
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return 0;
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case Opt_discard:
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mp->m_flags |= XFS_MOUNT_DISCARD;
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return 0;
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case Opt_nodiscard:
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mp->m_flags &= ~XFS_MOUNT_DISCARD;
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return 0;
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#ifdef CONFIG_FS_DAX
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case Opt_dax:
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mp->m_flags |= XFS_MOUNT_DAX;
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return 0;
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#endif
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default:
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xfs_warn(mp, "unknown mount option [%s].", param->key);
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return -EINVAL;
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}
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return 0;
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}
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static int
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xfs_fc_validate_params(
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struct xfs_mount *mp)
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{
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/*
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* no recovery flag requires a read-only mount
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*/
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if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
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!(mp->m_flags & XFS_MOUNT_RDONLY)) {
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xfs_warn(mp, "no-recovery mounts must be read-only.");
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return -EINVAL;
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}
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if ((mp->m_flags & XFS_MOUNT_NOALIGN) &&
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(mp->m_dalign || mp->m_swidth)) {
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xfs_warn(mp,
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"sunit and swidth options incompatible with the noalign option");
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return -EINVAL;
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}
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if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
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xfs_warn(mp, "quota support not available in this kernel.");
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return -EINVAL;
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}
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if ((mp->m_dalign && !mp->m_swidth) ||
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(!mp->m_dalign && mp->m_swidth)) {
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xfs_warn(mp, "sunit and swidth must be specified together");
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return -EINVAL;
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}
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if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
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xfs_warn(mp,
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"stripe width (%d) must be a multiple of the stripe unit (%d)",
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mp->m_swidth, mp->m_dalign);
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return -EINVAL;
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}
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if (mp->m_logbufs != -1 &&
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mp->m_logbufs != 0 &&
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(mp->m_logbufs < XLOG_MIN_ICLOGS ||
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mp->m_logbufs > XLOG_MAX_ICLOGS)) {
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xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
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mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
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return -EINVAL;
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}
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if (mp->m_logbsize != -1 &&
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mp->m_logbsize != 0 &&
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(mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
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mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
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!is_power_of_2(mp->m_logbsize))) {
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xfs_warn(mp,
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"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
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mp->m_logbsize);
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return -EINVAL;
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}
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if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) &&
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(mp->m_allocsize_log > XFS_MAX_IO_LOG ||
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mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
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xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
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mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
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return -EINVAL;
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}
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return 0;
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}
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struct proc_xfs_info {
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uint64_t flag;
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char *str;
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@ -1383,6 +1125,265 @@ xfs_mount_alloc(void)
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return mp;
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}
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static int
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suffix_kstrtoint(
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const char *s,
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unsigned int base,
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int *res)
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{
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int last, shift_left_factor = 0, _res;
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char *value;
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int ret = 0;
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value = kstrdup(s, GFP_KERNEL);
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if (!value)
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return -ENOMEM;
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last = strlen(value) - 1;
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if (value[last] == 'K' || value[last] == 'k') {
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shift_left_factor = 10;
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value[last] = '\0';
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}
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if (value[last] == 'M' || value[last] == 'm') {
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shift_left_factor = 20;
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value[last] = '\0';
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}
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if (value[last] == 'G' || value[last] == 'g') {
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shift_left_factor = 30;
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value[last] = '\0';
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}
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if (kstrtoint(value, base, &_res))
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ret = -EINVAL;
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kfree(value);
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*res = _res << shift_left_factor;
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return ret;
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}
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/*
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* Set mount state from a mount option.
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*
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* NOTE: mp->m_super is NULL here!
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*/
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static int
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xfs_fc_parse_param(
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struct fs_context *fc,
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struct fs_parameter *param)
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{
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struct xfs_mount *mp = fc->s_fs_info;
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struct fs_parse_result result;
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int size = 0;
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int opt;
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opt = fs_parse(fc, &xfs_fs_parameters, param, &result);
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if (opt < 0)
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return opt;
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switch (opt) {
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case Opt_logbufs:
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mp->m_logbufs = result.uint_32;
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return 0;
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case Opt_logbsize:
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if (suffix_kstrtoint(param->string, 10, &mp->m_logbsize))
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return -EINVAL;
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return 0;
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case Opt_logdev:
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kfree(mp->m_logname);
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mp->m_logname = kstrdup(param->string, GFP_KERNEL);
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if (!mp->m_logname)
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return -ENOMEM;
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return 0;
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case Opt_rtdev:
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kfree(mp->m_rtname);
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mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
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if (!mp->m_rtname)
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return -ENOMEM;
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return 0;
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case Opt_allocsize:
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if (suffix_kstrtoint(param->string, 10, &size))
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return -EINVAL;
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mp->m_allocsize_log = ffs(size) - 1;
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mp->m_flags |= XFS_MOUNT_ALLOCSIZE;
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return 0;
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case Opt_grpid:
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case Opt_bsdgroups:
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mp->m_flags |= XFS_MOUNT_GRPID;
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return 0;
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case Opt_nogrpid:
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case Opt_sysvgroups:
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mp->m_flags &= ~XFS_MOUNT_GRPID;
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return 0;
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case Opt_wsync:
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mp->m_flags |= XFS_MOUNT_WSYNC;
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return 0;
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case Opt_norecovery:
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mp->m_flags |= XFS_MOUNT_NORECOVERY;
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return 0;
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case Opt_noalign:
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mp->m_flags |= XFS_MOUNT_NOALIGN;
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return 0;
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case Opt_swalloc:
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mp->m_flags |= XFS_MOUNT_SWALLOC;
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return 0;
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case Opt_sunit:
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mp->m_dalign = result.uint_32;
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return 0;
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case Opt_swidth:
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mp->m_swidth = result.uint_32;
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return 0;
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case Opt_inode32:
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mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
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return 0;
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case Opt_inode64:
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mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
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return 0;
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case Opt_nouuid:
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mp->m_flags |= XFS_MOUNT_NOUUID;
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return 0;
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case Opt_ikeep:
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mp->m_flags |= XFS_MOUNT_IKEEP;
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return 0;
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case Opt_noikeep:
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mp->m_flags &= ~XFS_MOUNT_IKEEP;
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return 0;
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case Opt_largeio:
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mp->m_flags |= XFS_MOUNT_LARGEIO;
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return 0;
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case Opt_nolargeio:
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mp->m_flags &= ~XFS_MOUNT_LARGEIO;
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return 0;
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case Opt_attr2:
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mp->m_flags |= XFS_MOUNT_ATTR2;
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return 0;
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case Opt_noattr2:
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mp->m_flags &= ~XFS_MOUNT_ATTR2;
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mp->m_flags |= XFS_MOUNT_NOATTR2;
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return 0;
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case Opt_filestreams:
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mp->m_flags |= XFS_MOUNT_FILESTREAMS;
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return 0;
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case Opt_noquota:
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mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
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mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
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mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
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return 0;
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case Opt_quota:
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case Opt_uquota:
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case Opt_usrquota:
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mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
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XFS_UQUOTA_ENFD);
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return 0;
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case Opt_qnoenforce:
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case Opt_uqnoenforce:
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mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_UQUOTA_ENFD;
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return 0;
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case Opt_pquota:
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case Opt_prjquota:
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mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
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XFS_PQUOTA_ENFD);
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return 0;
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case Opt_pqnoenforce:
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mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_PQUOTA_ENFD;
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return 0;
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case Opt_gquota:
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case Opt_grpquota:
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mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
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XFS_GQUOTA_ENFD);
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return 0;
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case Opt_gqnoenforce:
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mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
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mp->m_qflags &= ~XFS_GQUOTA_ENFD;
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return 0;
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case Opt_discard:
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mp->m_flags |= XFS_MOUNT_DISCARD;
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return 0;
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case Opt_nodiscard:
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mp->m_flags &= ~XFS_MOUNT_DISCARD;
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return 0;
|
||||
#ifdef CONFIG_FS_DAX
|
||||
case Opt_dax:
|
||||
mp->m_flags |= XFS_MOUNT_DAX;
|
||||
return 0;
|
||||
#endif
|
||||
default:
|
||||
xfs_warn(mp, "unknown mount option [%s].", param->key);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
xfs_fc_validate_params(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
/*
|
||||
* no recovery flag requires a read-only mount
|
||||
*/
|
||||
if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
|
||||
!(mp->m_flags & XFS_MOUNT_RDONLY)) {
|
||||
xfs_warn(mp, "no-recovery mounts must be read-only.");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if ((mp->m_flags & XFS_MOUNT_NOALIGN) &&
|
||||
(mp->m_dalign || mp->m_swidth)) {
|
||||
xfs_warn(mp,
|
||||
"sunit and swidth options incompatible with the noalign option");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
|
||||
xfs_warn(mp, "quota support not available in this kernel.");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if ((mp->m_dalign && !mp->m_swidth) ||
|
||||
(!mp->m_dalign && mp->m_swidth)) {
|
||||
xfs_warn(mp, "sunit and swidth must be specified together");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
|
||||
xfs_warn(mp,
|
||||
"stripe width (%d) must be a multiple of the stripe unit (%d)",
|
||||
mp->m_swidth, mp->m_dalign);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (mp->m_logbufs != -1 &&
|
||||
mp->m_logbufs != 0 &&
|
||||
(mp->m_logbufs < XLOG_MIN_ICLOGS ||
|
||||
mp->m_logbufs > XLOG_MAX_ICLOGS)) {
|
||||
xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
|
||||
mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (mp->m_logbsize != -1 &&
|
||||
mp->m_logbsize != 0 &&
|
||||
(mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
|
||||
mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
|
||||
!is_power_of_2(mp->m_logbsize))) {
|
||||
xfs_warn(mp,
|
||||
"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
|
||||
mp->m_logbsize);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) &&
|
||||
(mp->m_allocsize_log > XFS_MAX_IO_LOG ||
|
||||
mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
|
||||
xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
|
||||
mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
xfs_fc_fill_super(
|
||||
struct super_block *sb,
|
||||
|
|
|
|||
Loading…
Reference in New Issue