Alan Somers 38b06f8ac4 fcntl: fix overflow when setting F_READAHEAD ... VOP_READ and VOP_WRITE take the seqcount in blocks in a 16-bit field. However, fcntl allows you to set the seqcount in bytes to any nonnegative 31-bit value. The result can be a 16-bit overflow, which will be sign-extended in functions like ffs_read. Fix this by sanitizing the argument in kern_fcntl. As a matter of policy, limit to IO_SEQMAX rather than INT16_MAX. Also, fifos have overloaded the f_seqcount field for a completely different purpose ever since r238936. Formalize that by using a union type. Reviewed by: cem MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D20710		2019-06-20 23:07:20 +00:00
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autofs	Ensure that directory entry padding bytes are zeroed.	2018-11-23 22:24:59 +00:00
cd9660	Ensure that directory entry padding bytes are zeroed.	2018-11-23 22:24:59 +00:00
cuse	Implement flag for telling cuse(3) clients if the peer is running in 32-bit	2019-04-18 19:04:07 +00:00
deadfs	Switch to use shared vnode locks for text files during image activation.	2019-05-05 11:20:43 +00:00
devfs	Extract eventfilter declarations to sys/_eventfilter.h	2019-05-20 00:38:23 +00:00
ext2fs	Separate kernel crc32() implementation to its own header (gsb_crc32.h) and	2019-06-17 19:49:08 +00:00
fdescfs	Ensure that directory entry padding bytes are zeroed.	2018-11-23 22:24:59 +00:00
fifofs	fcntl: fix overflow when setting F_READAHEAD	2019-06-20 23:07:20 +00:00
fuse	Remove "struct ucred*" argument from vtruncbuf	2019-05-24 20:27:50 +00:00
msdosfs	Remove "struct ucred*" argument from vtruncbuf	2019-05-24 20:27:50 +00:00
nandfs	Separate kernel crc32() implementation to its own header (gsb_crc32.h) and	2019-06-17 19:49:08 +00:00
nfs	Add #ifdef INET as requested by bz@.	2019-04-21 22:53:51 +00:00
nfsclient	Get rid of extraneous initialization.	2019-05-31 03:13:09 +00:00
nfsserver	Add support for the ModeSetMasked attribute to the NFSv4.1 server.	2019-04-19 23:35:08 +00:00
nullfs	Manually clear text references on reclaim for nullfs and tmpfs.	2019-06-05 20:16:25 +00:00
procfs	Plug memory disclosures via ptrace(2).	2018-12-03 20:54:17 +00:00
pseudofs	pseudofs: Ignore unsupported commands in vop_setattr.	2019-05-28 20:54:59 +00:00
smbfs	[smbfs] Allow semicolon in mounts that support long names	2019-01-20 05:52:16 +00:00
tmpfs	Manually clear text references on reclaim for nullfs and tmpfs.	2019-06-05 20:16:25 +00:00
udf	Ensure that directory entry padding bytes are zeroed.	2018-11-23 22:24:59 +00:00
unionfs	Include ktr.h in more compilation units	2019-05-21 20:38:48 +00:00