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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
2017-04-11Partially revert previous mallocarray conversions that containDavid Hill
constants. The consensus is that if both operands are constant, we don't need mallocarray. Reminded by tedu@ ok deraadt@
2017-04-09Convert a malloc(9) to mallocarray(9)David Hill
ok deraadt@
2017-03-20Read the free clusters bitmap in 1MB chunksJeremie Courreges-Anglas
instead of trying to read it in one go and panic in malloc(9) with large NTFS filesystems. panic reported and fix tested by landry@
2016-09-24use hashfree in fs code. from Mathieu -Ted Unangst
ok guenther
2016-09-07Remove usermount remnants. ok teduMartin Natano
2016-09-01Remove the unused ntfs write code. ok benno beckMartin Natano
2016-08-31Remove some unnecessary assignments in ntfs_subr.c, and move oneTom Cosgrove
assignment into the for() loop where it looks better ok otto@ 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@
2016-08-10Kill stale prototypes.Martin Natano
ok deraadt millert stefan
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
2016-06-01mkdir() on ntfs should return EROFS, not ENOENT.Martin Natano
issue found by landry ok kettenis millert
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
2016-03-05ntfs populates ntfs_args, not msdosfs_args; ok espie@natano
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@
2016-02-07Convert to uiomove. While there, use size_t consistently forStefan Kempf
variables 'left' and 'tocopy' and adapt printf and DPRINTF format strings accordingly. From Martin Natano.
2015-03-14Remove some includes include-what-you-use claims don'tJonathan Gray
have any direct symbols used. Tested for indirect use by compiling amd64/i386/sparc64 kernels. ok tedu@ deraadt@
2015-02-10Convert uiomovei() with a constant size argument to uiomove().Miod Vallat
2015-02-10Switch uiomovei(..., sizeof whatever, ...) to uiomove().Miod Vallat
2015-02-10First step towards making uiomove() take a size_t size argument:Miod Vallat
- rename uiomove() to uiomovei() and update all its users. - introduce uiomove(), which is similar to uiomovei() but with a size_t. - rewrite uiomovei() as an uiomove() wrapper. ok kettenis@
2015-01-09rename desiredvnodes to initialvnodes. less of a lie. ok beck deraadtTed Unangst
2014-12-16must include lock.h if you want to play with locksTed Unangst
2014-12-09Sprinkle in a little more mallocarray().Doug Hogan
ok deraadt@ tedu@
2014-11-18Nuke yet more obvious #include duplications.Kenneth R Westerback
ok miod@
2014-11-18use siphash for key lookups in all the filesystem hashes.David Gwynne
ok deraadt@ tedu@
2014-09-14remove uneeded proc.h includesJonathan Gray
ok mpi@ kspillner@
2014-07-12add a size argument to free. will be used soon, but for now default to 0.Ted Unangst
after discussions with beck deraadt kettenis.
2014-07-08decouple struct uvmexp into a new file, so that uvm_extern.h and sysctl.hTheo de Raadt
don't need to be married. ok guenther miod beck jsing kettenis
2014-01-19lazy init nthash to save some memory when it's not used. ok jsingTed Unangst
2013-12-14Zero out dirent structures that will be copied out to avoid leaking garbagePhilip Guenther
in the padding or trailing name bytes. ok beck@ millert@ espie@
2013-12-12Set the d_off member as getdents() expects in ntfs_readdir()Philip Guenther
ok and nudge jsing@
2013-12-02Stop trying to put an off_t into an int, which results in a 2GB limit.Joel Sing
From NetBSD. ok krw@
2013-12-02Avoid truncating 64-bit on disk attribute values to 32-bits. Otherwise anJoel Sing
attribute's data length value wraps at 4GB. ok krw@
2013-12-02Use appropriate format specifiers in debug messages. In particular, avoidJoel Sing
casting almost everything to u_int32_t, then formatting as a signed int (which really helps when you're trying to debug based on 64-bit values). Looked over by krw@
2013-11-24Clean up the NTFS debug code - use uppercase names for the debug macros,Joel Sing
especially since 'dprintf' now has another meaning (at least outside of the kernel). Tweak the macro syntax so we can avoid having to double bracket all invocations. Also apply a good dose of style(9). ok krw@
2013-08-13Switch time_t, ino_t, clock_t, and struct kevent's ident and dataPhilip Guenther
members to 64bit types. Assign new syscall numbers for (almost all) the syscalls that involve the affected types, including anything with time_t, timeval, itimerval, timespec, rusage, dirent, stat, or kevent arguments. Add a d_off member to struct dirent and replace getdirentries() with getdents(), thus immensely simplifying and accelerating telldir/seekdir. Build perl with -DBIG_TIME. Bump the major on every single base library: the compat bits included here are only good enough to make the transition; the T32 compat option will be burned as soon as we've reached the new world are are happy with the snapshots for all architectures. DANGER: ABI incompatibility. Updating to this kernel requires extra work or you won't be able to login: install a snapshot instead. Much assistance in fixing userland issues from deraadt@ and tedu@ and build assistance from todd@ and otto@
2013-06-11final removal of daddr64_t. daddr_t has been 64 bit for a long enoughTheo de Raadt
test period; i think 3 years ago the last bugs fell out. ok otto beck others
2013-05-30More of the same: ntfs doesn't do inode numbers >2^32, so use a smaller typePhilip Guenther
internally, only using ino_t in the VFS layer APIs: vget, readdir, getattr
2013-04-15Add an f_mntfromspec member to struct statfs, which specifies the name ofJoel Sing
the special provided when the mount was requested. This may be the same as the special that was actually used for the mount (e.g. in the case of a device node) or it may be different (e.g. in the case of a DUID). Whilst here, change f_ctime to a 64 bit type and remove the pointless f_spare members. Compatibility goo courtesy of guenther@ ok krw@ millert@
2013-03-28Handle the pathconf _PC_PATH_MAX, _PC_PIPE_BUF, _PC_ASYNC_IO,Philip Guenther
_PC_PRIO_IO, and _PC_SYNC_IO names in VOP_PATHCONF(), as they're fs-independent for us. Since we don't support latter three on any fs, we can also define the related _POSIX_{ASYNC,PRIO,SYNC}_IO symbols in <unistd.h> (via sys/unistd.h) with value -1. Also, zap pointless tty-only values from procfs(!). ok beck@, deraadt@
2013-01-25Add _KERNEL guard to hide dprintf macro from userland.Brad Smith
ok millert@
2013-01-18Constrain the amount of kernel memory used by NTFS. Keep a small cache ofJoel Sing
loaded ntnodes and once the maximum is reached, unload the least recently used ntnode before loading a new one. This avoids leaving large data structures hanging around, which only get cleaned up when the vnode is reclaimed. Additionally, the buffer cache should contain the data needed to reload the ntnode. ok beck@
2013-01-14Free the directory block buffer at the completion of a readdir,Joel Sing
significantly reducing NTFS kernel memory usage. Without this the buffer is not usually freed until the vnode is reclaimed. Tested by Sebastian Neuper. ok beck@ krw@
2013-01-14Ansify and apply style(9) to function definitions.Joel Sing
ok krw@
2013-01-13Destatic.Joel Sing
ok krw@
2013-01-03Correct error handling in two hard to hit ENOTDIR error cases. These wouldJoel Sing
previously leave the ntnode locked and neglect to decrement the use count. ok krw@ miod@
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