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| author | Alexei Starovoitov <ast@kernel.org> | 2024-10-24 18:45:59 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-10-24 18:47:28 -0700 |
| commit | bfa7b5c98be4bdcf8aaa4e5ca0b91359ea28c05c (patch) | |
| tree | 751b70005cb6641c42e90191f35dac731459a6ec /fs/smb/client/cifs_unicode.c | |
| parent | Merge branch 'share-user-memory-to-bpf-program-through-task-storage-map' (diff) | |
| parent | Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf (diff) | |
| download | linux-bfa7b5c98be4bdcf8aaa4e5ca0b91359ea28c05c.tar.gz linux-bfa7b5c98be4bdcf8aaa4e5ca0b91359ea28c05c.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Cross-merge bpf fixes after downstream PR.
No conflicts.
Adjacent changes in:
include/linux/bpf.h
include/uapi/linux/bpf.h
kernel/bpf/btf.c
kernel/bpf/helpers.c
kernel/bpf/syscall.c
kernel/bpf/verifier.c
kernel/trace/bpf_trace.c
mm/slab_common.c
tools/include/uapi/linux/bpf.h
tools/testing/selftests/bpf/Makefile
Link: https://lore.kernel.org/all/20241024215724.60017-1-daniel@iogearbox.net/
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'fs/smb/client/cifs_unicode.c')
| -rw-r--r-- | fs/smb/client/cifs_unicode.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/smb/client/cifs_unicode.c b/fs/smb/client/cifs_unicode.c index 79d99a913944..4cc6e0896fad 100644 --- a/fs/smb/client/cifs_unicode.c +++ b/fs/smb/client/cifs_unicode.c @@ -484,10 +484,21 @@ cifsConvertToUTF16(__le16 *target, const char *source, int srclen, /** * Remap spaces and periods found at the end of every * component of the path. The special cases of '.' and - * '..' do not need to be dealt with explicitly because - * they are addressed in namei.c:link_path_walk(). + * '..' are need to be handled because of symlinks. + * They are treated as non-end-of-string to avoid + * remapping and breaking symlinks pointing to . or .. **/ - if ((i == srclen - 1) || (source[i+1] == '\\')) + if ((i == 0 || source[i-1] == '\\') && + source[i] == '.' && + (i == srclen-1 || source[i+1] == '\\')) + end_of_string = false; /* "." case */ + else if (i >= 1 && + (i == 1 || source[i-2] == '\\') && + source[i-1] == '.' && + source[i] == '.' && + (i == srclen-1 || source[i+1] == '\\')) + end_of_string = false; /* ".." case */ + else if ((i == srclen - 1) || (source[i+1] == '\\')) end_of_string = true; else end_of_string = false; |