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2021-03-24cd9660, mfs: do not hide generic vop functions behind #defineSebastien Marie
It makes clearer which vop functions are real fileystem-implementations and which one are only stubs. No functional changes are intented. ok visa@
2021-03-05deregisterJonathan Gray
2021-03-05ansiJonathan Gray
2020-12-25Refactor klist insertion and removalVisa Hankala
Rename klist_{insert,remove}() to klist_{insert,remove}_locked(). These functions assume that the caller has locked the klist. The current state of locking remains intact because the kernel lock is still used with all klists. Add new functions klist_insert() and klist_remove() that lock the klist internally. This allows some code simplification. OK mpi@
2020-06-23Revert previous. hashfree() just calls free() which handles NULL withKenneth R Westerback
aplomb. 16 lines of 'C' can be so hard to grok at a glance. Prompted to look more closely at those 16 lines by mpi@.
2020-06-23hashfree() doesn't like NULL, so check for NULL if NULL is aKenneth R Westerback
possibility. i.e. when bailing out before calling hashinit().. COVERITY 1452907 ok mpi@
2020-06-11Rename poll-compatibility flag to better reflect what it is.Martin Pieuchot
While here prefix kernel-only EV flags with two underbars. Suggested by kettenis@, ok visa@
2020-06-08Use a new EV_OLDAPI flag to match the behavior of poll(2) and select(2).Martin Pieuchot
Adapt FS kqfilters to always return true when the flag is set and bypass the polling mechanism of the NFS thread. While here implement a write filter for NFS. ok visa@
2020-04-07Abstract the head of knote lists. This allows extending the lists,Visa Hankala
for example, with locking assertions. OK mpi@, anton@
2020-02-27Remove unused "struct proc *" argument from the following functions:Martin Pieuchot
- ufs_chown() & ufs_chmod() - ufs_reclaim() - ext2fs_chown() & ext2fs_chmod() - ntfs_ntget() & ntfs_ntput() - ntfs_vgetex(), ntfs_ntlookup() & ntfs_ntlookupfile() While here use `ap->a_p' directly when it is only required to re-enter the VFS layer in order to help reducing the loop. ok visa@
2020-02-20Replace field f_isfd with field f_flags in struct filterops to allowVisa Hankala
adding more filter properties without cluttering the struct. OK mpi@, anton@
2020-01-20struct vops is not modified during runtime so use const which moves eachClaudio Jeker
into read-only data segment. OK deraadt@ tedu@
2019-12-31Use C99 designated initializers with struct filterops. In addition,Visa Hankala
make the structs const so that the data are put in .rodata. OK mpi@, deraadt@, anton@, bluhm@
2019-12-26Convert struct vfsops initializer to C99 style.Alexander Bluhm
OK visa@
2019-08-05Allow concurrent reads of the f_offset field of struct file byanton
serializing both read/write operations using the existing file mutex. The vnode lock still grants exclusive write access to the offset; the mutex is only used to make the actual write atomic and prevent any concurrent reader from observing intermediate values. ok mpi@ visa@
2019-07-25vinvalbuf(9): tlseep -> tsleep_nsec(9); ok millert@cheloha
2019-07-12Revert anton@ changes about read/write unlockingsolene
https://marc.info/?l=openbsd-cvs&m=156277704122293&w=2 ok anton@
2019-07-10Make read/write of the f_offset field belonging to struct file MP-safe;anton
as part of the effort to unlock the kernel. Instead of relying on the vnode lock, introduce a dedicated lock per file. Exclusive write access is granted using the new foffset_enter and foffset_leave API. A convenience function foffset_get is also available for threads that only need to read the current offset. The lock acquisition order in vn_write has been changed to match the one in vn_read in order to avoid a potential deadlock. This change also gets rid of a documented race in vn_read(). Inspired by the FreeBSD implementation. With help and ok mpi@ visa@
2019-01-20remove unused i_lockf member from struct iso_node; ok tedu@ visa@anton
2018-09-26Move the allocating and freeing of mount points intoVisa Hankala
dedicated functions. OK deraadt@ mpi@
2018-05-27Drop unnecessary `p' parameter from vget(9).Visa Hankala
OK mpi@
2018-05-02Remove proc from the parameters of vn_lock(). The parameter isVisa Hankala
unnecessary because curproc always does the locking. OK mpi@
2018-04-28Clean up the parameters of VOP_LOCK() and VOP_UNLOCK(). It is alwaysVisa Hankala
curproc that does the locking or unlocking, so the proc parameter is pointless and can be dropped. OK mpi@, deraadt@
2018-03-28Use RWL_IS_VNODE with locks that are acquired through VOP_LOCK(),Visa Hankala
to appease WITNESS. ext2fs and ffs already use the flag. The same locking pattern appears with other file systems too, so this patch addresses the remaining cases. OK mpi@
2018-02-10Syncronize filesystems to disk when suspending. Each mountpoint's vnodesTheo de Raadt
are pushed to disk. Dangling vnodes (unlinked files still in use) and vnodes undergoing change by long-running syscalls are identified -- and such filesystems are marked dirty on-disk while we are suspended (in case power is lost, a fsck will be required). Filesystems without dangling or busy vnodes are marked clean, resulting in faster boots following "battery died" circumstances. Tested by numerous developers, thanks for the feedback.
2017-12-30Don't pull in <sys/file.h> just to get fcntl.hPhilip Guenther
ok deraadt@ krw@
2017-12-30Delete unnecessary <sys/file.h> includesPhilip Guenther
ok millert@ krw@
2017-12-11In uvm Chuck decided backing store would not be allocated proactivelyTheo de Raadt
for blocks re-fetchable from the filesystem. However at reboot time, filesystems are unmounted, and since processes lack backing store they are killed. Since the scheduler is still running, in some cases init is killed... which drops us to ddb [noted by bluhm]. Solution is to convert filesystems to read-only [proposed by kettenis]. The tale follows: sys_reboot() should pass proc * to MD boot() to vfs_shutdown() which completes current IO with vfs_busy VB_WRITE|VB_WAIT, then calls VFS_MOUNT() with MNT_UPDATE | MNT_RDONLY, soon teaching us that *fs_mount() calls a copyin() late... so store the sizes in vfsconflist[] and move the copyin() to sys_mount()... and notice nfs_mount copyin() is size-variant, so kill legacy struct nfs_args3. Next we learn ffs_mount()'s MNT_UPDATE code is sharp and rusty especially wrt softdep, so fix some bugs adn add ~MNT_SOFTDEP to the downgrade. Some vnodes need a little more help, so tie them to &dead_vnops. ffs_mount calling DIOCCACHESYNC is causing a bit of grief still but this issue is seperate and will be dealt with in time. couple hundred reboots by bluhm and myself, advice from guenther and others at the hut
2017-09-08If you use sys/param.h, you don't need sys/types.hTheo de Raadt
2017-04-20Tweak lock inits to make the system runnable with witness(4)Visa Hankala
on amd64 and i386.
2017-02-08Move a pointer deref to after a NULL test.Jonathan Gray
ok krw@
2016-09-24use hashfree in fs code. from Mathieu -Ted Unangst
ok guenther
2016-09-15all pools have their ipl set via pool_setipl, so fold it into pool_init.David Gwynne
the ioff argument to pool_init() is unused and has been for many years, so this replaces it with an ipl argument. because the ipl will be set on init we no longer need pool_setipl. most of these changes have been done with coccinelle using the spatch below. cocci sucks at formatting code though, so i fixed that by hand. the manpage and subr_pool.c bits i did myself. ok tedu@ jmatthew@ @ipl@ expression pp; expression ipl; expression s, a, o, f, m, p; @@ -pool_init(pp, s, a, o, f, m, p); -pool_setipl(pp, ipl); +pool_init(pp, s, a, ipl, f, m, p);
2016-09-07Remove usermount remnants. ok teduMartin Natano
2016-09-02Variable 'imp' is set earlier in cd9660_mount() if it's needed (whenTom Cosgrove
MNT_UPDATE is set in mnt_flag), so remove an unnecessary assignment later. ok bluhm
2016-08-25pool_setipl for udfDavid Gwynne
ok phessler@ krw@
2016-08-13Eliminate pointless casts to qaddr_t of a value being assigned to a void*Philip Guenther
ok kettenis@ krw@ natano@ dlg@ espie@
2016-06-19Remove the lockmgr() API. It is only used by filesystems, where it is aMartin Natano
trivial change to use rrw locks instead. All it needs is LK_* defines for the RW_* flags. tested by naddy and sthen on package building infrastructure input and ok jmc mpi tedu
2016-05-22When pulling an msdos formated umass stick during mount while theAlexander Bluhm
usb stack was busy, the kernel could trigger an uvm fault. There is a race between vop_generic_revoke() and sys_mount() where vgonel() could reset v_specinfo. Then v_specmountpoint is no longer valid. So after sleeping, msdosfs_mountfs() could crash in the error path. The code in the different *_mountfs() functions was inconsistent, implement the same check everywhere. OK krw@ natano@
2016-04-26Populate all necessary statfs members in .vfs_statfs. cd9660, udf,Martin Natano
msdosfs and nfsv2 don't set f_namemax. ntfs and ext2fs don't set f_namemeax and f_favail. fusefs doesn't set f_mntfromspec, f_favail and f_iosize. Also, make all filesystems use copy_statfs_info(), so that all statfs information is filled in correctly for the (sb != &mp->mnt-stat) case. ok stefan
2016-03-27When pulling and unmounting an umass USB stick, the file systemAlexander Bluhm
could end up in an inconsistent state. The fstype dependent mp->mnt_data was NULL, but the general mp was still listed as a valid mount point. Next access to the file system would crash with a NULL pointer dereference. If closing the device fails, the mount point must go away anyway. There is nothing we can do about it. Remove the workaround for the EIO error in the general unmount code, but do not generate any error in the file system specific unmount functions. OK natano@ beck@
2016-03-19Remove the unused flags argument from VOP_UNLOCK().natano
torture tested on amd64, i386 and macppc ok beck mpi stefan "the change looks right" deraadt
2016-03-17Set mnt_data to NULL after freeing the file system specific mount point.Alexander Bluhm
OK krw@ natano@ as part of a larger diff
2016-03-14Change a bunch of (<blah> *)0 to NULL.Kenneth R Westerback
ok beck@ deraadt@
2016-03-07Sync no-argument function declaration and definition by adding (void).Christian Weisgerber
ok mpi@ millert@
2016-02-27Move mnt_maxsymlink from struct mount to struct ufsmount.natano
The concept of differentiating between "short" and "long" symlinks is specific to ufs/, so it shouldn't creep into the generic fs layer. Inspired by a similar commit to NetBSD. While there replace all references to mnt_maxsymlinklen in ufs/ext2fs with EXT2_MAXSYMLINKLEN, which is the constant max short symlink len for ext2fs. This allows to get rid of some (mnt_maxsymlinklen == 0) checks there, which is always false for ext2fs. input and ok stefan@ ok millert@
2016-02-02Convert to uiomove(). From Martin Natano.Stefan Kempf
2016-01-19Convert min() and uiomovei() to ulmin() and uiomove().Stefan Kempf
Diff from Martin Natano ok kettenis@
2015-12-11implement kqfilter. copied from tmpfs (which I copied from ufs).Ted Unangst
hint about kqueue from jsg after a crashing httpd report from sevan
2015-09-23remove lockmgr_printinfo stubs. from Martin NatanoTed Unangst
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