[25/32] xfs_db: report parent pointers embedded in xattrs

Message ID	170405006434.1804688.3757235808372242607.stgit@frogsfrogsfrogs (mailing list archive)
State	Superseded, archived
Headers	show Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFE92C2C5 for <linux-xfs@vger.kernel.org>; Sun, 31 Dec 2023 23:11:37 +0000 (UTC) Date: Sun, 31 Dec 2023 15:11:37 -0800 Subject: [PATCH 25/32] xfs_db: report parent pointers embedded in xattrs From: "Darrick J. Wong" <djwong@kernel.org> To: djwong@kernel.org, cem@kernel.org Cc: catherine.hoang@oracle.com, linux-xfs@vger.kernel.org, allison.henderson@oracle.com Message-ID: <170405006434.1804688.3757235808372242607.stgit@frogsfrogsfrogs> In-Reply-To: <170405006077.1804688.8762482665401724622.stgit@frogsfrogsfrogs> References: <170405006077.1804688.8762482665401724622.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit
Series	[01/32] xfs: add parent pointer support to attribute code \| expand [01/32] xfs: add parent pointer support to attribute code [02/32] xfs: define parent pointer ondisk extended attribute format [03/32] xfs: add parent pointer validator functions [04/32] xfs: extend transaction reservations for parent attributes [05/32] xfs: parent pointer attribute creation [06/32] xfs: add parent attributes to link [07/32] xfs: add parent attributes to symlink [08/32] xfs: remove parent pointers in unlink [09/32] xfs: Add parent pointers to rename [10/32] xfs: pass the attr value to put_listent when possible [11/32] xfs: Add parent pointer ioctl [12/32] xfs: fix unit conversion error in xfs_log_calc_max_attrsetm_res [13/32] xfs: drop compatibility minimum log size computations for reflink [14/32] xfs: don't remove the attr fork when parent pointers are enabled [15/32] xfs: Add the parent pointer support to the superblock version 5. [16/32] libfrog: add parent pointer support code [17/32] libfrog: detect looping paths when walking directory parent pointers [18/32] xfs_io: adapt parent command to new parent pointer ioctls [19/32] xfs_io: Add i, n and f flags to parent command [20/32] xfs_logprint: decode parent pointers in ATTRI items fully [21/32] xfs_spaceman: report file paths [22/32] xfs_scrub: use parent pointers when possible to report file operations [23/32] xfs_db: report parent pointers in version command [24/32] xfs_db: report parent bit on xattrs [25/32] xfs_db: report parent pointers embedded in xattrs [26/32] xfs_db: obfuscate dirent and parent pointer names consistently [27/32] libxfs: export attr3_leaf_hdr_from_disk via libxfs_api_defs.h [28/32] xfs_db: add a parents command to list the parents of a file [29/32] libxfs: create new files with attr forks if necessary [30/32] xfsprogs: Fix default superblock attr bits [31/32] mkfs: Add parent pointers during protofile creation [32/32] mkfs: enable formatting with parent pointers

diff --git a/db/attr.c b/db/attr.c index f29e4a54454..9e7bbd164df 100644 --- a/db/attr.c +++ b/db/attr.c @@ -19,6 +19,8 @@ static int attr_leaf_entries_count(void *obj, int startoff); static int attr_leaf_hdr_count(void *obj, int startoff); static int attr_leaf_name_local_count(void *obj, int startoff); static int attr_leaf_name_local_name_count(void *obj, int startoff); +static int attr_leaf_name_pptr_count(void *obj, int startoff); +static int attr_leaf_name_pptr_namelen(void *obj, int startoff); static int attr_leaf_name_local_value_count(void *obj, int startoff); static int attr_leaf_name_local_value_offset(void *obj, int startoff, int idx); @@ -111,6 +113,8 @@ const field_t attr_leaf_map_flds[] = { #define LNOFF(f) bitize(offsetof(xfs_attr_leaf_name_local_t, f)) #define LVOFF(f) bitize(offsetof(xfs_attr_leaf_name_remote_t, f)) +#define PPOFF(f) bitize(offsetof(xfs_attr_leaf_name_local_t, nameval) + \ + offsetof(struct xfs_parent_name_rec, f)) const field_t attr_leaf_name_flds[] = { { "valuelen", FLDT_UINT16D, OI(LNOFF(valuelen)), attr_leaf_name_local_count, FLD_COUNT, TYP_NONE }, @@ -118,6 +122,14 @@ const field_t attr_leaf_name_flds[] = { attr_leaf_name_local_count, FLD_COUNT, TYP_NONE }, { "name", FLDT_CHARNS, OI(LNOFF(nameval)), attr_leaf_name_local_name_count, FLD_COUNT, TYP_NONE }, + { "parent_ino", FLDT_INO, OI(PPOFF(p_ino)), + attr_leaf_name_pptr_count, FLD_COUNT, TYP_INODE }, + { "parent_gen", FLDT_UINT32D, OI(PPOFF(p_gen)), + attr_leaf_name_pptr_count, FLD_COUNT, TYP_NONE }, + { "parent_namehash", FLDT_UINT32X, OI(PPOFF(p_namehash)), + attr_leaf_name_pptr_count, FLD_COUNT, TYP_NONE }, + { "parent_name", FLDT_CHARNS, attr_leaf_name_local_value_offset, + attr_leaf_name_pptr_namelen, FLD_COUNT|FLD_OFFSET, TYP_NONE }, { "value", FLDT_CHARNS, attr_leaf_name_local_value_offset, attr_leaf_name_local_value_count, FLD_COUNT|FLD_OFFSET, TYP_NONE }, { "valueblk", FLDT_UINT32X, OI(LVOFF(valueblk)), @@ -273,6 +285,26 @@ attr_leaf_name_local_count( __attr_leaf_name_local_count); } +static int +__attr_leaf_name_pptr_count( + struct xfs_attr_leafblock *leaf, + struct xfs_attr_leaf_entry *e, + int i) +{ + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 1; + return 0; +} + +static int +attr_leaf_name_pptr_count( + void *obj, + int startoff) +{ + return attr_leaf_entry_walk(obj, startoff, + __attr_leaf_name_pptr_count); +} + static int __attr_leaf_name_local_name_count( struct xfs_attr_leafblock *leaf, @@ -283,6 +315,8 @@ __attr_leaf_name_local_name_count( if (!(e->flags & XFS_ATTR_LOCAL)) return 0; + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 0; l = xfs_attr3_leaf_name_local(leaf, i); return l->namelen; @@ -297,6 +331,32 @@ attr_leaf_name_local_name_count( __attr_leaf_name_local_name_count); } +static int +__attr_leaf_name_pptr_namelen( + struct xfs_attr_leafblock *leaf, + struct xfs_attr_leaf_entry *e, + int i) +{ + struct xfs_attr_leaf_name_local *l; + + if (!(e->flags & XFS_ATTR_LOCAL)) + return 0; + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) != XFS_ATTR_PARENT) + return 0; + + l = xfs_attr3_leaf_name_local(leaf, i); + return be16_to_cpu(l->valuelen); +} + +static int +attr_leaf_name_pptr_namelen( + void *obj, + int startoff) +{ + return attr_leaf_entry_walk(obj, startoff, + __attr_leaf_name_pptr_namelen); +} + static int __attr_leaf_name_local_value_count( struct xfs_attr_leafblock *leaf, @@ -307,6 +367,8 @@ __attr_leaf_name_local_value_count( if (!(e->flags & XFS_ATTR_LOCAL)) return 0; + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 0; l = xfs_attr3_leaf_name_local(leaf, i); return be16_to_cpu(l->valuelen); diff --git a/db/attrshort.c b/db/attrshort.c index 872d771d5ed..9cd3411bee4 100644 --- a/db/attrshort.c +++ b/db/attrshort.c @@ -13,6 +13,8 @@ #include "attrshort.h" static int attr_sf_entry_name_count(void *obj, int startoff); +static int attr_sf_entry_pptr_count(void *obj, int startoff); +static int attr_sf_entry_pptr_namelen(void *obj, int startoff); static int attr_sf_entry_value_count(void *obj, int startoff); static int attr_sf_entry_value_offset(void *obj, int startoff, int idx); static int attr_shortform_list_count(void *obj, int startoff); @@ -34,6 +36,8 @@ const field_t attr_sf_hdr_flds[] = { }; #define EOFF(f) bitize(offsetof(struct xfs_attr_sf_entry, f)) +#define PPOFF(f) bitize(offsetof(struct xfs_attr_sf_entry, nameval) + \ + offsetof(struct xfs_parent_name_rec, f)) const field_t attr_sf_entry_flds[] = { { "namelen", FLDT_UINT8D, OI(EOFF(namelen)), C1, 0, TYP_NONE }, { "valuelen", FLDT_UINT8D, OI(EOFF(valuelen)), C1, 0, TYP_NONE }, @@ -49,11 +53,33 @@ const field_t attr_sf_entry_flds[] = { TYP_NONE }, { "name", FLDT_CHARNS, OI(EOFF(nameval)), attr_sf_entry_name_count, FLD_COUNT, TYP_NONE }, + { "parent_ino", FLDT_INO, OI(PPOFF(p_ino)), attr_sf_entry_pptr_count, + FLD_COUNT, TYP_INODE }, + { "parent_gen", FLDT_UINT32D, OI(PPOFF(p_gen)), attr_sf_entry_pptr_count, + FLD_COUNT, TYP_NONE }, + { "parent_namehash", FLDT_UINT32X, OI(PPOFF(p_namehash)), + attr_sf_entry_pptr_count, FLD_COUNT, TYP_NONE }, + { "parent_name", FLDT_CHARNS, attr_sf_entry_value_offset, + attr_sf_entry_pptr_namelen, FLD_COUNT|FLD_OFFSET, TYP_NONE }, { "value", FLDT_CHARNS, attr_sf_entry_value_offset, attr_sf_entry_value_count, FLD_COUNT|FLD_OFFSET, TYP_NONE }, { NULL } }; +static int +attr_sf_entry_pptr_count( + void *obj, + int startoff) +{ + struct xfs_attr_sf_entry *e; + + ASSERT(bitoffs(startoff) == 0); + e = (struct xfs_attr_sf_entry *)((char *)obj + byteize(startoff)); + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 1; + return 0; +} + static int attr_sf_entry_name_count( void *obj, @@ -63,6 +89,8 @@ attr_sf_entry_name_count( ASSERT(bitoffs(startoff) == 0); e = (struct xfs_attr_sf_entry *)((char *)obj + byteize(startoff)); + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 0; return e->namelen; } @@ -84,6 +112,22 @@ attr_sf_entry_size( return bitize((int)xfs_attr_sf_entsize(e)); } +static int +attr_sf_entry_pptr_namelen( + void *obj, + int startoff) +{ + struct xfs_attr_sf_entry *e; + + ASSERT(bitoffs(startoff) == 0); + e = (struct xfs_attr_sf_entry *)((char *)obj + byteize(startoff)); + + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) != XFS_ATTR_PARENT) + return 0; + + return e->valuelen; +} + static int attr_sf_entry_value_count( void *obj, @@ -93,6 +137,10 @@ attr_sf_entry_value_count( ASSERT(bitoffs(startoff) == 0); e = (struct xfs_attr_sf_entry *)((char *)obj + byteize(startoff)); + + if ((e->flags & XFS_ATTR_NSP_ONDISK_MASK) == XFS_ATTR_PARENT) + return 0; + return e->valuelen; }

[25/32] xfs_db: report parent pointers embedded in xattrs

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