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2013-02-26export kernel_write(), convert open-coded instancesAl Viro5-61/+24
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26fs: encode_fh: return FILEID_INVALID if invalid fid_typeNamjae Jeon12-21/+21
This patch is a follow up on below patch: [PATCH] exportfs: add FILEID_INVALID to indicate invalid fid_type commit: 216b6cbdcbd86b1db0754d58886b466ae31f5a63 Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Vivek Trivedi <t.vivek@samsung.com> Acked-by: Steven Whitehouse <swhiteho@redhat.com> Acked-by: Sage Weil <sage@inktank.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26kill f_vfsmntAl Viro5-6/+5
very few users left... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry opJeff Layton12-16/+84
The following set of operations on a NFS client and server will cause server# mkdir a client# cd a server# mv a a.bak client# sleep 30 # (or whatever the dir attrcache timeout is) client# stat . stat: cannot stat `.': Stale NFS file handle Obviously, we should not be getting an ESTALE error back there since the inode still exists on the server. The problem is that the lookup code will call d_revalidate on the dentry that "." refers to, because NFS has FS_REVAL_DOT set. nfs_lookup_revalidate will see that the parent directory has changed and will try to reverify the dentry by redoing a LOOKUP. That of course fails, so the lookup code returns ESTALE. The problem here is that d_revalidate is really a bad fit for this case. What we really want to know at this point is whether the inode is still good or not, but we don't really care what name it goes by or whether the dcache is still valid. Add a new d_op->d_weak_revalidate operation and have complete_walk call that instead of d_revalidate. The intent there is to allow for a "weaker" d_revalidate that just checks to see whether the inode is still good. This is also gives us an opportunity to kill off the FS_REVAL_DOT special casing. [AV: changed method name, added note in porting, fixed confusion re having it possibly called from RCU mode (it won't be)] Cc: NeilBrown <neilb@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26nfsd: handle vfs_getattr errors in acl protocolJ. Bruce Fields4-9/+24
We're currently ignoring errors from vfs_getattr. The correct thing to do is to do the stat in the main service procedure not in the response encoding. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26switch vfs_getattr() to struct pathAl Viro14-35/+40
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26default SET_PERSONALITY() in linux/elf.hAl Viro17-54/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26ceph: prepopulate inodes only when request is abortedSage Weil1-2/+38
If r_aborted is true, we do not hold the dir i_mutex, and cannot touch the dcache. However, we still need to update the inodes with the state returned by the MDS. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sage Weil <sage@inktank.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26d_hash_and_lookup(): export, switch open-coded instancesAl Viro4-24/+18
* calling conventions change - ERR_PTR() is returned on ->d_hash() errors; NULL is just for dcache miss now. * exported, open-coded instances in ncpfs and cifs converted. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate()Al Viro3-35/+33
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: split dropping the acls from v9fs_set_create_acl()Al Viro3-21/+28
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: switch v9fs_acl_chmod() from dentry to inode+fidAl Viro3-16/+13
caller has both, might as well pass them explicitly. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: switch v9fs_set_acl() from dentry to fidAl Viro1-5/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: lift the call of set_cached_acl() into the callers of v9fs_set_acl()Al Viro1-4/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-269p: add fid-based variant of v9fs_xattr_set()Al Viro2-15/+20
... making v9fs_xattr_set() a wrapper for it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26tegra: don't wank with d_find_alias()Al Viro1-9/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26lirc: get rid of bogus checksAl Viro1-10/+1
file argument is a struct file being passed to ->open() or already opened; none of the checks in lirc_get_pdata() can fail. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26hugetlb_file_setup(): use d_alloc_pseudo()Al Viro1-4/+15
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26shmem_setup_file(): use d_alloc_pseudo() instead of d_alloc()Al Viro1-4/+15
Note that provided ->d_dname() reproduces what we used to get for those guys in e.g. /proc/self/maps; it might be a good idea to change that to something less ugly, but for now let's keep the existing user-visible behaviour Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22oprofilefs: add missing ->i_mutex locking in object creationAl Viro1-3/+13
Right now it's safe only during initial mount *and* functions are asking to be abused for dynamic adding of objects. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22spufs_mkdir(): don't d_add() on negative parentAl Viro1-43/+21
NOTE: this really needs testing - I could've easily fucked up refcounting in there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22hostfs: directory methods have no business in non-directory inode_operationsAl Viro1-8/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22xenfs: switch to pure simple_fill_super()Al Viro1-55/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22__d_materialise_unique() is too genericAl Viro1-14/+5
Its first argument is always non-root, while the second one is always root. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22fs: Fix possible use-after-free with AIOJan Kara1-1/+1
Running AIO is pinning inode in memory using file reference. Once AIO is completed using aio_complete(), file reference is put and inode can be freed from memory. So we have to be sure that calling aio_complete() is the last thing we do with the inode. CC: Christoph Hellwig <hch@infradead.org> CC: Jens Axboe <axboe@kernel.dk> CC: Jeff Moyer <jmoyer@redhat.com> CC: stable@vger.kernel.org Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22constify d_lookup() argumentsAl Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22constify __d_lookup() argumentsAl Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22lookup_slow: get rid of name argumentAl Viro1-4/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22lookup_fast: get rid of name argumentAl Viro1-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22get rid of name and type arguments of walk_component()Al Viro1-10/+8
... always can be found in nameidata now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22link_path_walk(): move assignments to nd->last/nd->last_type upAl Viro1-12/+10
... and clean the main loop a bit Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22vfs: remove d_path_with_unreachableJeff Layton2-32/+0
The last caller was removed >2 years ago in commit 7b2a69ba7. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22clean shmem_file_setup() a bitAl Viro1-10/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22fs: Preserve error code in get_empty_filp(), part 2Anatol Pomozov8-22/+19
Allocating a file structure in function get_empty_filp() might fail because of several reasons: - not enough memory for file structures - operation is not allowed - user is over its limit Currently the function returns NULL in all cases and we loose the exact reason of the error. All callers of get_empty_filp() assume that the function can fail with ENFILE only. Return error through pointer. Change all callers to preserve this error code. [AV: cleaned up a bit, carved the get_empty_filp() part out into a separate commit (things remaining here deal with alloc_file()), removed pipe(2) behaviour change] Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22propagate error from get_empty_filp() to its callersAl Viro3-30/+28
Based on parts from Anatol's patch (the rest is the next commit). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22new helper: file_inode(file)Al Viro306-717/+696
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22mount: consolidate permission checksAl Viro1-33/+7
... and ask for global CAP_SYS_ADMIN only for superblock-level remounts Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22get rid of unprotected dereferencing of mnt->mnt_nsAl Viro1-12/+17
It's safe only under namespace_sem or vfsmount_lock; all places in fs/namespace.c that want mnt->mnt_ns->user_ns actually want to use current->nsproxy->mnt_ns->user_ns (note the calls of check_mnt() in there). Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-01-20Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signalLinus Torvalds6-14/+30
Pull misc syscall fixes from Al Viro: - compat syscall fixes (discussed back in December) - a couple of "make life easier for sigaltstack stuff by reducing inter-tree dependencies" - fix up compiler/asmlinkage calling convention disagreement of sys_clone() - misc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: sys_clone() needs asmlinkage_protect make sure that /linuxrc has std{in,out,err} x32: fix sigtimedwait x32: fix waitid() switch compat_sys_wait4() and compat_sys_waitid() to COMPAT_SYSCALL_DEFINE switch compat_sys_sigaltstack() to COMPAT_SYSCALL_DEFINE CONFIG_GENERIC_SIGALTSTACK build breakage with asm-generic/syscalls.h Ensure that kernel_init_freeable() is not inlined into non __init code
2013-01-20ia64: kill thread_matches(), unexport ptrace_check_attach()Oleg Nesterov3-29/+1
The ia64 function "thread_matches()" has no users since commit e868a55c2a8c ("[IA64] remove find_thread_for_addr()"). Remove it. This allows us to make ptrace_check_attach() static to kernel/ptrace.c, which is good since we'll need to change the semantics of it and fix up all the callers. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-19sys_clone() needs asmlinkage_protectAl Viro1-2/+4
Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-01-19make sure that /linuxrc has std{in,out,err}Al Viro1-0/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-01-18Merge tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds2-1/+11
Pull USB fixes from Greg Kroah-Hartman: "Here are 3 USB patches for 3.8-rc4. Two of them are new device id patches, and the third fixes a reported oops in the io_ti USB serial driver" * tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: io_ti: Fix NULL dereference in chase_port() USB: option: add TP-LINK HSUPA Modem MA180 USB: option: blacklist network interface on ONDA MT8205 4G LTE
2013-01-18Merge tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds10-9/+65
Pull tty/serial fixes from Greg Kroah-Hartman: "Here are a few tty/serial driver fixes for 3.8-rc4 that resolve a number of problems that people have been having, including the ptys ioctl issue that is a regression fix" * tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: 8250/16?50: Add support for Broadcom TruManage redirected serial port pty: return EINVAL for TIOCGPTN for BSD ptys serial:ifx6x60:Keep word size accordance with SPI controller tty: 8250_dw: Fix inverted arguments to serial_out in IRQ handler serial: samsung: remove redundant setting of line config during port reset serial:ifx6x60:Delete SPI timer when shut down port tty/8250: The correct device id for this card is 0x0022 tty/8250: pbn_b0_8_1152000_200 is supposed to be an 8 port definition tty: serial: vt8500: fix return value check in vt8500_serial_probe() serial: mxs-auart: Index is unsigned mxs: uart: fix setting RTS from software
2013-01-18Merge tag 'staging-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds8-28/+23
Pull staging driver bugfixes from Greg Kroah-Hartman: "Here are some bugfixes for the drivers/staging tree for 3.8-rc4. Nothing major, just a number of small fixes for problems that people have reported, including finally tracking down the root of the 64/32 bit problem with the vt6656 that has been driving people crazy for a while" * tag 'staging-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging/sb105x: PARPORT config is not good enough must use PARPORT_PC staging: wlan-ng: Fix clamping of returned SSID length staging: vt6656: Fix inconsistent structure packing staging:iio:adis16080: Perform sign extension iio: mxs-lradc: indexes are unsigned
2013-01-18Merge tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds1-14/+21
Pull char/misc driver fixes from Greg Kroah-Hartman: "Here are two hyperv patches for 3.8-rc4 that fix some reported problems hv_balloon driver" * tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: Drivers: hv: balloon: Fix a memory leak Drivers: hv: balloon: Fix a bug in the definition of struct dm_info_msg
2013-01-18Merge tag 'stable/for-linus-3.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xenLinus Torvalds7-114/+167
Pull Xen fixes from Konrad Rzeszutek Wilk: - CVE-2013-0190/XSA-40 (or stack corruption for 32-bit PV kernels) - Fix racy vma access spotted by Al Viro - Fix mmap batch ioctl potentially resulting in large O(n) page allcations. - Fix vcpu online/offline BUG:scheduling while atomic.. - Fix unbound buffer scanning for more than 32 vCPUs. - Fix grant table being incorrectly initialized - Fix incorrect check in pciback - Allow privcmd in backend domains. Fix up whitespace conflict due to ugly merge resolution in Xen tree in arch/arm/xen/enlighten.c * tag 'stable/for-linus-3.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: Fix stack corruption in xen_failsafe_callback for 32bit PVOPS guests. Revert "xen/smp: Fix CPU online/offline bug triggering a BUG: scheduling while atomic." xen/gntdev: remove erronous use of copy_to_user xen/gntdev: correctly unmap unlinked maps in mmu notifier xen/gntdev: fix unsafe vma access xen/privcmd: Fix mmap batch ioctl. Xen: properly bound buffer access when parsing cpu/*/availability xen/grant-table: correctly initialize grant table version 1 x86/xen : Fix the wrong check in pciback xen/privcmd: Relax access control in privcmd_ioctl_mmap
2013-01-18Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds2-3/+7
Pull m68knommu arch fixes from Greg Ungerer: "This contains a couple of fixes, both affecting compilation of non-mmu m68k targets." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: fix conditional use of init_pointer_table m68knommu: add KMAP definitions for non-MMU definitions
2013-01-18asm-generic, mm: pgtable: convert my_zero_pfn() to macros to fix buildKirill A. Shutemov1-4/+2
Commit 816422ad7647 ("asm-generic, mm: pgtable: consolidate zero page helpers") broke the compile on MIPS if SPARSEMEM is enabled. We get this: In file included from arch/mips/include/asm/pgtable.h:552, from include/linux/mm.h:44, from arch/mips/kernel/asm-offsets.c:14: include/asm-generic/pgtable.h: In function 'my_zero_pfn': include/asm-generic/pgtable.h:466: error: implicit declaration of function 'page_to_section' In file included from arch/mips/kernel/asm-offsets.c:14: include/linux/mm.h: At top level: include/linux/mm.h:738: error: conflicting types for 'page_to_section' include/asm-generic/pgtable.h:466: note: previous implicit declaration of 'page_to_section' was here Due header files inter-dependencies, the only way I see to fix it is convert my_zero_pfn() for __HAVE_COLOR_ZERO_PAGE to macros. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-17Linux 3.8-rc4Linus Torvalds1-1/+1
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