ef3daeda7b
In ia64 kernel, the O_LARGEFILE flag is forced when opening a file. This is problematic for execution of 32 bit processes, which are not largefile aware, either by SW emulation or by HW execution. For such processes, the problem is two-fold: 1) When trying to open a file that is larger than 4G the operation should fail, but it's not 2) Writing to offset larger than 4G should fail, but it's not The proposed patch takes advantage of the way 32 bit processes are identified in ia64 systems. Such processes have PER_LINUX32 for their personality. With the patch, the ia64 kernel will not enforce the O_LARGEFILE flag if the current process has PER_LINUX32 set. The behavior for all other architectures remains unchanged. Signed-off-by: Yoav Zach <yoav.zach@intel.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
#ifndef _ASM_IA64_FCNTL_H
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#define _ASM_IA64_FCNTL_H
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/*
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* Based on <asm-i386/fcntl.h>.
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*
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* Modified 1998-2000
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* David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co.
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*/
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/*
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* open/fcntl - O_SYNC is only implemented on blocks devices and on
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* files located on an ext2 file system
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*/
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#define O_ACCMODE 0003
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#define O_RDONLY 00
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#define O_WRONLY 01
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#define O_RDWR 02
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#define O_CREAT 0100 /* not fcntl */
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#define O_EXCL 0200 /* not fcntl */
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#define O_NOCTTY 0400 /* not fcntl */
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#define O_TRUNC 01000 /* not fcntl */
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#define O_APPEND 02000
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#define O_NONBLOCK 04000
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#define O_NDELAY O_NONBLOCK
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#define O_SYNC 010000
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#define FASYNC 020000 /* fcntl, for BSD compatibility */
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#define O_DIRECT 040000 /* direct disk access hint - currently ignored */
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#define O_LARGEFILE 0100000
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#define O_DIRECTORY 0200000 /* must be a directory */
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#define O_NOFOLLOW 0400000 /* don't follow links */
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#define O_NOATIME 01000000
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#define F_DUPFD 0 /* dup */
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#define F_GETFD 1 /* get close_on_exec */
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#define F_SETFD 2 /* set/clear close_on_exec */
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#define F_GETFL 3 /* get file->f_flags */
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#define F_SETFL 4 /* set file->f_flags */
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#define F_GETLK 5
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#define F_SETLK 6
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#define F_SETLKW 7
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#define F_SETOWN 8 /* for sockets. */
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#define F_GETOWN 9 /* for sockets. */
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#define F_SETSIG 10 /* for sockets. */
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#define F_GETSIG 11 /* for sockets. */
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/* for F_[GET|SET]FL */
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#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
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/* for posix fcntl() and lockf() */
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#define F_RDLCK 0
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#define F_WRLCK 1
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#define F_UNLCK 2
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/* for old implementation of bsd flock () */
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#define F_EXLCK 4 /* or 3 */
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#define F_SHLCK 8 /* or 4 */
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/* for leases */
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#define F_INPROGRESS 16
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/* operations for bsd flock(), also used by the kernel implementation */
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#define LOCK_SH 1 /* shared lock */
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#define LOCK_EX 2 /* exclusive lock */
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#define LOCK_NB 4 /* or'd with one of the above to prevent
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blocking */
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#define LOCK_UN 8 /* remove lock */
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#define LOCK_MAND 32 /* This is a mandatory flock */
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#define LOCK_READ 64 /* ... Which allows concurrent read operations */
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#define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
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#define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
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struct flock {
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short l_type;
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short l_whence;
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off_t l_start;
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off_t l_len;
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pid_t l_pid;
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};
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#define F_LINUX_SPECIFIC_BASE 1024
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#define force_o_largefile() ( ! (current->personality & PER_LINUX32) )
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#endif /* _ASM_IA64_FCNTL_H */
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