kernel.git/fs/cifs/dfs_cache.c, branch linux-5.12.y

cifs: fix check of dfs interlinks

2021-07-14T14:59:27Z

[ Upstream commit 889c2a700799f3b6f82210925e1faf4a9b833c4a ] Interlink is a special type of DFS link that resolves to a different DFS domain-based namespace. To determine whether it is an interlink or not, check if ReferralServers and StorageServers bits are set to 1 and 0 respectively in ReferralHeaderFlags, as specified in MS-DFSC 3.1.5.4.5 Determining Whether a Referral Response is an Interlink. Signed-off-by: Paulo Alcantara (SUSE) Reviewed-by: Aurelien Aptel Signed-off-by: Steve French Signed-off-by: Sasha Levin

cifs: introduce helper for finding referral server to improve DFS target resolution

2021-02-25T18:19:15Z

Some servers seem to mistakenly report different values for capabilities and share flags, so we can't always rely on those values to decide whether the resolved target can handle any new DFS referrals. Add a new helper is_referral_server() to check if all resolved targets can handle new DFS referrals by directly looking at the GET_DFS_REFERRAL.ReferralHeaderFlags value as specified in MS-DFSC 2.2.4 RESP_GET_DFS_REFERRAL in addition to is_tcon_dfs(). Signed-off-by: Paulo Alcantara (SUSE) Cc: stable@vger.kernel.org # 5.11 Signed-off-by: Steve French

cifs: fix dfs domain referrals

2021-01-29T03:40:43Z

The new mount API requires additional changes to how DFS is handled. Additional testing of DFS uncovered problems with domain based DFS referrals (a follow on patch addresses DFS links) which this patch addresses. Signed-off-by: Ronnie Sahlberg Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French

cifs: check pointer before freeing

2021-01-13T18:55:29Z

clang static analysis reports this problem dfs_cache.c:591:2: warning: Argument to kfree() is a constant address (18446744073709551614), which is not memory allocated by malloc() kfree(vi); ^~~~~~~~~ In dfs_cache_del_vol() the volume info pointer 'vi' being freed is the return of a call to find_vol(). The large constant address is find_vol() returning an error. Add an error check to dfs_cache_del_vol() similar to the one done in dfs_cache_update_vol(). Fixes: 54be1f6c1c37 ("cifs: Add DFS cache routines") Signed-off-by: Tom Rix Reviewed-by: Nathan Chancellor CC: # v5.0+ Signed-off-by: Steve French

cifs: move cifs_cleanup_volume_info[_content] to fs_context.c

2020-12-14T15:26:30Z

and rename it to smb3_cleanup_fs_context[_content] Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French

cifs: remove the devname argument to cifs_compose_mount_options

2020-12-14T01:12:07Z

none of the callers use this argument any more. Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French

cifs: switch to new mount api

2020-12-14T01:12:07Z

See Documentation/filesystems/mount_api.rst for details on new mount API Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French

cifs: rename dup_vol to smb3_fs_context_dup and move it into fs_context.c

2020-12-14T01:12:07Z

Continue restructuring needed for support of new mount API Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French

cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h

2020-12-14T01:12:07Z

Harmonize and change all such variables to 'ctx', where possible. No changes to actual logic. Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French

Merge branch 'akpm' (patches from Andrew)

2020-08-07T18:39:33Z

Merge misc updates from Andrew Morton: - a few MM hotfixes - kthread, tools, scripts, ntfs and ocfs2 - some of MM Subsystems affected by this patch series: kthread, tools, scripts, ntfs, ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore, sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan). * emailed patches from Andrew Morton : (162 commits) mm: vmscan: consistent update to pgrefill mm/vmscan.c: fix typo khugepaged: khugepaged_test_exit() check mmget_still_valid() khugepaged: retract_page_tables() remember to test exit khugepaged: collapse_pte_mapped_thp() protect the pmd lock khugepaged: collapse_pte_mapped_thp() flush the right range mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible mm: thp: replace HTTP links with HTTPS ones mm/page_alloc: fix memalloc_nocma_{save/restore} APIs mm/page_alloc.c: skip setting nodemask when we are in interrupt mm/page_alloc: fallbacks at most has 3 elements mm/page_alloc: silence a KASAN false positive mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask() mm/page_alloc.c: simplify pageblock bitmap access mm/page_alloc.c: extract the common part in pfn_to_bitidx() mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits mm/shuffle: remove dynamic reconfiguration mm/memory_hotplug: document why shuffle_zone() is relevant mm/page_alloc: remove nr_free_pagecache_pages() mm: remove vm_total_pages ...