smb: client: allow creating symlinks via reparse points

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Add support for creating symlinks via IO_REPARSE_TAG_SYMLINK reparse
points in SMB2+.

These are fully supported by most SMB servers and documented in
MS-FSCC.  Also have the advantage of requiring fewer roundtrips as
their symlink targets can be parsed directly from CREATE responses on
STATUS_STOPPED_ON_SYMLINK errors.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311260838.nx5mkj1j-lkp@intel.com/
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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This commit is contained in:

Paulo Alcantara 2023-11-25 23:55:04 -03:00 • committed by Steve French

parent 5408990aa6

commit 514d793e27

3 changed files with 86 additions and 5 deletions

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6

fs/smb/client/cifsglob.h

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15

fs/smb/client/link.c

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70

fs/smb/client/smb2ops.c

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