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Brian Behlendorf e897a23eb1
Fix statfs(2) for 32-bit user space 
When handling a 32-bit statfs() system call the returned fields,
although 64-bit in the kernel, must be limited to 32-bits or an
EOVERFLOW error will be returned.

This is less of an issue for block counts since the default
reported block size in 128KiB. But since it is possible to
set a smaller block size, these values will be scaled as
needed to fit in a 32-bit unsigned long.

Unlike most other filesystems the total possible file counts
are more likely to overflow because they are calculated based
on the available free space in the pool. In order to prevent
this the reported value must be capped at 2^32-1. This is
only for statfs(2) reporting, there are no changes to the
internal ZFS limits.

Reviewed-by: Andreas Dilger <andreas.dilger@whamcloud.com>
Reviewed-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #7927 
Closes #7122 
Closes #7937
2018-09-24 17:11:25 -07:00
..
.gitignore Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
always-arch.m4 Illumos Crypto Port module added to enable native encryption in zfs 2016-07-20 10:43:30 -07:00
always-compiler-options.m4 Support -fsanitize=address with --enable-asan 2018-01-10 10:49:27 -08:00
always-pyzfs.m4 Fix inverted check for --enable-pyzfs 2018-05-03 11:10:26 -07:00
ax_code_coverage.m4 Fix "--enable-code-coverage" debug build 2017-09-22 22:16:18 -07:00
ax_python_devel.m4 Adopt pyzfs from ClusterHQ 2018-05-01 10:33:35 -07:00
config.awk Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
deb.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
kernel-acl-refcount.m4 Linux 4.16 compat: use correct *_dec_and_test() 2018-02-22 09:02:06 -08:00
kernel-acl.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
kernel-aio-fsync.m4 Kernel 4.9 compat: file_operations->aio_fsync removal 2016-11-15 09:20:46 -08:00
kernel-automount.m4 Fix snapshot automounting with GrSecurity constify plugin. 2012-08-24 08:56:38 -07:00
kernel-bdev-logical-size.m4 Only use gcc -Wunused-but-set-variable when available 2013-01-10 16:09:39 -08:00
kernel-bdev-physical-size.m4 Only use gcc -Wunused-but-set-variable when available 2013-01-10 16:09:39 -08:00
kernel-bdi.m4 Fix autoconf detection of super_setup_bdi_name 2017-07-25 10:30:20 -07:00
kernel-bio_set_dev.m4 Linux 3.14 compat: IO acct, global_page_state, etc 2017-09-16 11:00:19 -07:00
kernel-bio-bvec-iter.m4 Linux 3.14 compat: Immutable biovec changes in vdev_disk.c 2014-04-10 14:28:38 -07:00
kernel-bio-end-io-t-args.m4 Linux 4.13 compat: bio->bi_status and blk_status_t 2017-07-23 19:37:12 -07:00
kernel-bio-failfast.m4 Linux 2.6.36 compat, use REQ_FAILFAST_MASK and remove pre-2.6.36 support 2015-05-11 15:07:00 -07:00
kernel-bio-op.m4 Fix RHEL 7.4 bio_set_op_attrs build error 2017-06-27 12:00:27 -07:00
kernel-bio-rw-barrier.m4 zvol processing should use struct bio 2015-09-04 15:30:24 -04:00
kernel-bio-rw-discard.m4 zvol processing should use struct bio 2015-09-04 15:30:24 -04:00
kernel-blk-queue-bdi.m4 Enable Linux read-ahead for a single page on ZVOLs 2017-05-04 18:00:27 -04:00
kernel-blk-queue-flags.m4 Linux compat 4.16: blk_queue_flag_{set,clear} 2018-04-10 10:32:14 -07:00
kernel-blk-queue-flush.m4 Linux 4.7 compat: replace blk_queue_flush with blk_queue_write_cache 2016-05-20 11:08:55 -07:00
kernel-blk-queue-max-hw-sectors.m4 Only use gcc -Wunused-but-set-variable when available 2013-01-10 16:09:39 -08:00
kernel-blk-queue-max-segments.m4 Only use gcc -Wunused-but-set-variable when available 2013-01-10 16:09:39 -08:00
kernel-blk-queue-unplug.m4 Explicit block device plugging when submitting multiple BIOs 2016-09-29 13:13:31 -07:00
kernel-blkdev-get-by-path.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-blkdev-reread-part.m4 Add support for autoexpand property 2018-07-23 15:40:15 -07:00
kernel-block-device-operations.m4 Linux compat 4.18: check_disk_size_change() 2018-06-15 15:05:21 -07:00
kernel-clear-inode.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-commit-metadata.m4 Implement .commit_metadata hook for NFS export 2012-10-03 10:49:45 -07:00
kernel-create-nameidata.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
kernel-ctl-table-name.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-current_bio_tail.m4 zvol processing should use struct bio 2015-09-04 15:30:24 -04:00
kernel-current-time.m4 Linux 4.18 compat: inode timespec -> timespec64 2018-06-19 21:51:18 -07:00
kernel-d-make-root.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-d-obtain-alias.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-d-prune-aliases.m4 Add zfs_sb_prune_aliases() function 2015-06-22 10:22:49 -07:00
kernel-declare-event-class.m4 Swap DTRACE_PROBE* with Linux tracepoints 2014-11-17 11:13:55 -08:00
kernel-dentry-operations.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
kernel-dirty-inode.m4 Eliminate runtime function pointer mods in autotools checks 2013-03-04 08:49:17 -08:00
kernel-discard-granularity.m4 Set zvol discard_granularity to the volblocksize. 2012-08-07 14:55:31 -07:00
kernel-elevator-change.m4 Linux 4.14 compat: blk_queue_stackable() 2018-06-19 21:52:45 -07:00
kernel-encode-fh-inode.m4 Linux 3.5 compat, eops->encode_fh() takes inodes 2012-07-23 12:29:23 -07:00
kernel-evict-inode.m4 Fix build failures on PaX/GRSecurity patched kernels 2012-07-17 09:22:43 -07:00
kernel-fallocate-pax.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-fallocate.m4 Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
kernel-file-dentry.m4 Use file_dentry and file_inode wrappers 2016-08-11 12:06:37 -07:00
kernel-file-inode.m4 Linux 3.19 compat: file_inode was added 2015-02-10 11:24:51 -08:00
kernel-fmode-t.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-follow-down-one.m4 Linux 3.18 compat: Snapshot auto-mounting 2015-08-31 13:54:39 -07:00
kernel-fpu.m4 Support for vectorized algorithms on x86 2016-03-21 09:24:34 -07:00
kernel-fst-mount.m4 Allow mounting datasets more than once 2018-04-13 10:44:05 -07:00
kernel-fsync.m4 Eliminate runtime function pointer mods in autotools checks 2013-03-04 08:49:17 -08:00
kernel-generic_io_acct.m4 Linux 3.14 compat: IO acct, global_page_state, etc 2017-09-16 11:00:19 -07:00
kernel-generic_readlink.m4 4.10 compat - BIO flag changes and others 2016-12-30 16:03:59 -06:00
kernel-get-disk-and-module.m4 Linux 4.16 compat: get_disk_and_module() 2018-03-05 12:44:35 -08:00
kernel-get-disk-ro.m4 Only use gcc -Wunused-but-set-variable when available 2013-01-10 16:09:39 -08:00
kernel-get-link.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
kernel-global_page_state.m4 Fix free memory calculation on v3.14+ 2018-02-23 08:50:06 -08:00
kernel-group-info.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-in-compat-syscall.m4 Fix statfs(2) for 32-bit user space 2018-09-24 17:11:25 -07:00
kernel-inode-getattr.m4 Linux 4.11 compat: iops.getattr and friends 2017-03-20 17:51:16 -07:00
kernel-inode-lock.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-inode-set-flags.m4 Use inode_set_flags when available 2016-12-16 13:54:51 -08:00
kernel-inode-set-iversion.m4 Linux 4.16 compat: inode_set_iversion() 2018-02-08 21:25:19 -08:00
kernel-inode-times.m4 Linux 4.18 compat: inode timespec -> timespec64 2018-06-19 21:51:18 -07:00
kernel-insert-inode-locked.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-invalidate-bdev-args.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-is_owner_or_cap.m4 Refactor inode_owner_or_capable() autotools check 2014-05-01 10:06:49 -07:00
kernel-kmap-atomic-args.m4 Add compatibility layer for {kmap,kunmap}_atomic 2015-08-24 10:13:25 -07:00
kernel-kmem-cache.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-kmem.m4 Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
kernel-kuid-helpers.m4 Check whether the kernel supports i_uid/gid_read/write helpers 2016-07-25 13:21:49 -07:00
kernel-kuidgid.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-lookup-bdev.m4 Fix lookup_bdev() on Ubuntu 2016-10-26 10:30:43 -07:00
kernel-lookup-nameidata.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
kernel-lseek-execute.m4 Add SEEK_DATA/SEEK_HOLE to lseek()/llseek() 2013-07-02 09:24:43 -07:00
kernel-misc-minor.m4 Add kernel module auto-loading 2018-03-13 10:45:55 -07:00
kernel-mk-request-fn.m4 Linux 4.4 compat: make_request_fn returns blk_qc_t 2015-12-01 16:48:08 -08:00
kernel-mkdir-umode-t.m4 Fix spelling 2017-01-03 11:31:18 -06:00
kernel-mod-param.m4 Linux compat: Grsecurity kernel 2016-08-22 10:05:45 -07:00
kernel-objtool.m4 Suppress incorrect objtool warnings 2017-12-07 10:28:50 -08:00
kernel-open-bdev-exclusive.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-pde-data.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-put-link.m4 Linux 4.5 compat: get_link() / put_link() 2016-01-20 11:36:00 -08:00
kernel-rename.m4 Linux 4.9 compat: iops->rename() wants flags 2016-10-20 09:39:09 -07:00
kernel-rw.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-rwsem.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-sched.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-security-inode-init.m4 Use -Werror for all kernel configure tests. 2013-02-24 10:20:28 -08:00
kernel-set-fs-pwd.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-set-nlink.m4 Linux 3.2 compat: set_nlink() 2011-12-16 20:02:52 -08:00
kernel-setattr-prepare.m4 Linux 4.9 compat: inode_change_ok() renamed setattr_prepare() 2016-10-20 09:39:09 -07:00
kernel-sget-args.m4 Linux 3.6 compat, sget() 2012-10-14 13:06:48 -07:00
kernel-show-options.m4 Fix NULL pointer dereference on PaX/GRSecurity patched Linux 3.3 and later kernels 2012-07-20 12:31:45 -07:00
kernel-shrink.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-spinlock.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-submit_bio.m4 Linux 4.8 compat: submit_bio() 2016-07-29 14:48:00 -07:00
kernel-super-userns.m4 Linux 4.8 compat: new s_user_ns member of struct super_block 2016-08-08 10:47:22 -07:00
kernel-timer.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-tmpfile.m4 Add support for O_TMPFILE 2016-11-04 10:46:40 -07:00
kernel-truncate-range.m4 Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
kernel-truncate-setsize.m4 When checking for symbol exports, try compiling. 2012-07-26 13:42:57 -07:00
kernel-urange-sleep.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-userns-capabilities.m4 Take user namespaces into account in policy checks 2018-03-07 15:40:42 -08:00
kernel-vfs-direct_IO.m4 Direct IO support 2018-08-27 10:04:21 -07:00
kernel-vfs-fsync.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-vfs-getattr.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-vfs-iterate.m4 RHEL 7.5 compat: FMODE_KABI_ITERATE 2018-05-02 15:01:24 -07:00
kernel-vfs-rw-iterate.m4 Fix incompatibility with Reiser4 patched kernels 2018-01-09 16:18:19 -08:00
kernel-wait.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel-xattr-handler.m4 Fix spelling 2017-01-03 11:31:18 -06:00
kernel-zlib.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
kernel.m4 Fix statfs(2) for 32-bit user space 2018-09-24 17:11:25 -07:00
mount-helper.m4 The mount helper mount.zfs MUST be in /sbin (not '$sbindir'). 2015-05-18 16:54:36 -07:00
rpm.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
Rules.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
suppressed-warnings.txt Suppress packaging warning 2011-11-08 11:32:04 -08:00
tgz.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
toolchain-simd.m4 Add support for selecting encryption backend 2018-08-02 11:59:24 -07:00
user-dracut.m4 Accept udev and dracut paths specified by ./configure 2014-06-11 16:32:57 -07:00
user-libaio.m4 Fix mmap / libaio deadlock 2018-03-28 10:19:22 -07:00
user-libblkid.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
user-libexec.m4 Tunable directory for zfs runtime scripts 2018-06-07 09:59:59 -07:00
user-libssl.m4 Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
user-libtirpc.m4 Add support for libtirpc 2016-04-28 09:27:40 -07:00
user-libudev.m4 Fix WANT_DEVNAME2DEVID configure error 2016-04-01 09:06:54 -07:00
user-libuuid.m4 Cleanup linking 2016-03-18 13:31:11 -07:00
user-makedev.m4 glibc 2.5 compat: use correct header for makedev() et al. 2017-03-31 09:32:00 -07:00
user-runstatedir.m4 Add defs for makefile installation dir vars 2014-03-31 16:11:13 -07:00
user-systemd.m4 systemd mount generator and tracking ZEDLET 2018-04-06 14:11:09 -07:00
user-sysvinit.m4 Add systemd unit files for ZFS startup 2014-02-05 12:25:30 -08:00
user-udev.m4 Accept udev and dracut paths specified by ./configure 2014-06-11 16:32:57 -07:00
user-zlib.m4 Cleanup linking 2016-03-18 13:31:11 -07:00
user.m4 Tunable directory for zfs runtime scripts 2018-06-07 09:59:59 -07:00
zfs-build.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs-meta.m4 Update build system and packaging 2018-05-29 16:00:33 -07:00