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David Howells afefdbb28a [PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers ... These patches make the kernel pass 64-bit inode numbers internally when communicating to userspace, even on a 32-bit system. They are required because some filesystems have intrinsic 64-bit inode numbers: NFS3+ and XFS for example. The 64-bit inode numbers are then propagated to userspace automatically where the arch supports it. Problems have been seen with userspace (eg: ld.so) using the 64-bit inode number returned by stat64() or getdents64() to differentiate files, and failing because the 64-bit inode number space was compressed to 32-bits, and so overlaps occur. This patch: Make filldir_t take a 64-bit inode number and struct kstat carry a 64-bit inode number so that 64-bit inode numbers can be passed back to userspace. The stat functions then returns the full 64-bit inode number where available and where possible. If it is not possible to represent the inode number supplied by the filesystem in the field provided by userspace, then error EOVERFLOW will be issued. Similarly, the getdents/readdir functions now pass the full 64-bit inode number to userspace where possible, returning EOVERFLOW instead when a directory entry is encountered that can't be properly represented. Note that this means that some inodes will not be stat'able on a 32-bit system with old libraries where they were before - but it does mean that there will be no ambiguity over what a 32-bit inode number refers to. Note similarly that directory scans may be cut short with an error on a 32-bit system with old libraries where the scan would work before for the same reasons. It is judged unlikely that this situation will occur because modern glibc uses 64-bit capable versions of stat and getdents class functions exclusively, and that older systems are unlikely to encounter unrepresentable inode numbers anyway. [akpm: alpha build fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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Makefile	Linux-2.6.12-rc2	20 years ago
conv.h	Linux-2.6.12-rc2	20 years ago
entry64.S	[SPARC64]: Mark __ex_table section correctly.	19 years ago
fs.c	[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers	19 years ago
ioctl.c	[PATCH] files: lock-free fd look-up	20 years ago
ipc.c	Linux-2.6.12-rc2	20 years ago
misc.c	[PATCH] namespaces: utsname: switch to using uts namespaces	19 years ago
signal.c	Linux-2.6.12-rc2	20 years ago
signal.h	Linux-2.6.12-rc2	20 years ago
socket.c	[NET]: Fix memory leak in sys_{send,recv}msg() w/compat	20 years ago
socksys.c	[SPARC64]: Fix section-mismatch errors in solaris emul module.	19 years ago
socksys.h	Linux-2.6.12-rc2	20 years ago
systbl.S	[SPARC]: Wire up sys_unshare().	19 years ago
timod.c	[PATCH] gfp_t: remaining bits of arch/*	20 years ago