Author: pfg Date: Sun Jul 2 20:47:25 2017 New Revision: 320578 URL: https://svnweb.freebsd.org/changeset/base/320578
Log: ext2fs: be more verbose about unsupported ext2fs features. It is useful to know exactly what features may be lacking when trying to mount ext4 filesystems. Submitted by: Fedor Uporov Differential Revision: https://reviews.freebsd.org/D11208 Modified: head/sys/fs/ext2fs/ext2_vfsops.c head/sys/fs/ext2fs/ext2fs.h Modified: head/sys/fs/ext2fs/ext2_vfsops.c ============================================================================== --- head/sys/fs/ext2fs/ext2_vfsops.c Sun Jul 2 19:13:01 2017 (r320577) +++ head/sys/fs/ext2fs/ext2_vfsops.c Sun Jul 2 20:47:25 2017 (r320578) @@ -279,6 +279,7 @@ ext2_mount(struct mount *mp) static int ext2_check_sb_compat(struct ext2fs *es, struct cdev *dev, int ronly) { + uint32_t i, mask; if (es->e2fs_magic != E2FS_MAGIC) { printf("ext2fs: %s: wrong magic number %#x (expected %#x)\n", @@ -286,17 +287,29 @@ ext2_check_sb_compat(struct ext2fs *es, struct cdev *d return (1); } if (es->e2fs_rev > E2FS_REV0) { - if (es->e2fs_features_incompat & ~(EXT2F_INCOMPAT_SUPP | - EXT4F_RO_INCOMPAT_SUPP)) { - printf( -"WARNING: mount of %s denied due to unsupported optional features\n", - devtoname(dev)); + mask = es->e2fs_features_incompat & ~(EXT2F_INCOMPAT_SUPP | + EXT4F_RO_INCOMPAT_SUPP); + if (mask) { + printf("WARNING: mount of %s denied due to " + "unsupported optional features:\n", devtoname(dev)); + for (i = 0; + i < sizeof(incompat)/sizeof(struct ext2_feature); + i++) + if (mask & incompat[i].mask) + printf("%s ", incompat[i].name); + printf("\n"); return (1); } - if (!ronly && - (es->e2fs_features_rocompat & ~EXT2F_ROCOMPAT_SUPP)) { + mask = es->e2fs_features_rocompat & ~EXT2F_ROCOMPAT_SUPP; + if (!ronly && mask) { printf("WARNING: R/W mount of %s denied due to " - "unsupported optional features\n", devtoname(dev)); + "unsupported optional features:\n", devtoname(dev)); + for (i = 0; + i < sizeof(ro_compat)/sizeof(struct ext2_feature); + i++) + if (mask & ro_compat[i].mask) + printf("%s ", ro_compat[i].name); + printf("\n"); return (1); } } Modified: head/sys/fs/ext2fs/ext2fs.h ============================================================================== --- head/sys/fs/ext2fs/ext2fs.h Sun Jul 2 19:13:01 2017 (r320577) +++ head/sys/fs/ext2fs/ext2fs.h Sun Jul 2 20:47:25 2017 (r320578) @@ -203,10 +203,13 @@ struct csum { * compatible/incompatible features */ #define EXT2F_COMPAT_PREALLOC 0x0001 +#define EXT2F_COMPAT_IMAGIC_INODES 0x0002 #define EXT2F_COMPAT_HASJOURNAL 0x0004 #define EXT2F_COMPAT_EXT_ATTR 0x0008 #define EXT2F_COMPAT_RESIZE 0x0010 #define EXT2F_COMPAT_DIRHASHINDEX 0x0020 +#define EXT2F_COMPAT_LAZY_BG 0x0040 +#define EXT2F_COMPAT_EXCLUDE_BITMAP 0x0100 #define EXT2F_COMPAT_SPARSESUPER2 0x0200 #define EXT2F_ROCOMPAT_SPARSESUPER 0x0001 @@ -216,15 +219,18 @@ struct csum { #define EXT2F_ROCOMPAT_GDT_CSUM 0x0010 #define EXT2F_ROCOMPAT_DIR_NLINK 0x0020 #define EXT2F_ROCOMPAT_EXTRA_ISIZE 0x0040 +#define EXT2F_ROCOMPAT_HAS_SNAPSHOT 0x0080 #define EXT2F_ROCOMPAT_QUOTA 0x0100 #define EXT2F_ROCOMPAT_BIGALLOC 0x0200 #define EXT2F_ROCOMPAT_METADATA_CKSUM 0x0400 +#define EXT2F_ROCOMPAT_REPLICA 0x0800 #define EXT2F_ROCOMPAT_READONLY 0x1000 #define EXT2F_ROCOMPAT_PROJECT 0x2000 #define EXT2F_INCOMPAT_COMP 0x0001 #define EXT2F_INCOMPAT_FTYPE 0x0002 #define EXT2F_INCOMPAT_RECOVER 0x0004 +#define EXT2F_INCOMPAT_JOURNAL_DEV 0x0008 #define EXT2F_INCOMPAT_META_BG 0x0010 #define EXT2F_INCOMPAT_EXTENTS 0x0040 #define EXT2F_INCOMPAT_64BIT 0x0080 @@ -236,6 +242,58 @@ struct csum { #define EXT2F_INCOMPAT_LARGEDIR 0x4000 #define EXT2F_INCOMPAT_INLINE_DATA 0x8000 #define EXT2F_INCOMPAT_ENCRYPT 0x10000 + +struct ext2_feature +{ + int mask; + const char *name; +}; + +static const struct ext2_feature compat[] = { + { EXT2F_COMPAT_PREALLOC, "dir_prealloc" }, + { EXT2F_COMPAT_IMAGIC_INODES, "imagic_inodes" }, + { EXT2F_COMPAT_HASJOURNAL, "has_journal" }, + { EXT2F_COMPAT_EXT_ATTR, "ext_attr" }, + { EXT2F_COMPAT_RESIZE, "resize_inode" }, + { EXT2F_COMPAT_DIRHASHINDEX, "dir_index" }, + { EXT2F_COMPAT_EXCLUDE_BITMAP, "snapshot_bitmap" }, + { EXT2F_COMPAT_SPARSESUPER2, "sparse_super2" } +}; + +static const struct ext2_feature ro_compat[] = { + { EXT2F_ROCOMPAT_SPARSESUPER, "sparse_super" }, + { EXT2F_ROCOMPAT_LARGEFILE, "large_file" }, + { EXT2F_ROCOMPAT_BTREE_DIR, "btree_dir" }, + { EXT2F_ROCOMPAT_HUGE_FILE, "huge_file" }, + { EXT2F_ROCOMPAT_GDT_CSUM, "uninit_groups" }, + { EXT2F_ROCOMPAT_DIR_NLINK, "dir_nlink" }, + { EXT2F_ROCOMPAT_EXTRA_ISIZE, "extra_isize" }, + { EXT2F_ROCOMPAT_HAS_SNAPSHOT, "snapshot" }, + { EXT2F_ROCOMPAT_QUOTA, "quota" }, + { EXT2F_ROCOMPAT_BIGALLOC, "bigalloc" }, + { EXT2F_ROCOMPAT_METADATA_CKSUM, "metadata_csum" }, + { EXT2F_ROCOMPAT_REPLICA, "replica" }, + { EXT2F_ROCOMPAT_READONLY, "ro" }, + { EXT2F_ROCOMPAT_PROJECT, "project" } +}; + +static const struct ext2_feature incompat[] = { + { EXT2F_INCOMPAT_COMP, "compression" }, + { EXT2F_INCOMPAT_FTYPE, "filetype" }, + { EXT2F_INCOMPAT_RECOVER, "needs_recovery" }, + { EXT2F_INCOMPAT_JOURNAL_DEV, "journal_dev" }, + { EXT2F_INCOMPAT_META_BG, "meta_bg" }, + { EXT2F_INCOMPAT_EXTENTS, "extents" }, + { EXT2F_INCOMPAT_64BIT, "64bit" }, + { EXT2F_INCOMPAT_MMP, "mmp" }, + { EXT2F_INCOMPAT_FLEX_BG, "flex_bg" }, + { EXT2F_INCOMPAT_EA_INODE, "ea_inode" }, + { EXT2F_INCOMPAT_DIRDATA, "dirdata" }, + { EXT2F_INCOMPAT_CSUM_SEED, "metadata_csum_seed" }, + { EXT2F_INCOMPAT_LARGEDIR, "large_dir" }, + { EXT2F_INCOMPAT_INLINE_DATA, "inline_data" }, + { EXT2F_INCOMPAT_ENCRYPT, "encrypt" } +}; /* * Features supported in this implementation _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
