diff options
| author | Andi Kleen <ak@suse.de> | 2007-06-20 12:23:30 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-20 14:27:25 -0700 |
| commit | e412ac4971d27ea84f3d63ce425c6ab2d6a67f23 (patch) | |
| tree | e73b08d0114f5cc63ad8f44f4e11434abc8f642f | |
| parent | 7c8545e98468c53809fc06788a3b9a34dff05240 (diff) | |
x86_64: Fix readahead/sync_file_range/fadvise64 compat calls
Correctly convert the u64 arguments from 32bit to 64bit.
Pointed out by Heiko Carstens.
I guess this proves Linus' theory that nobody uses the more exotic Linux
specific syscalls. It wasn't discovered by a user.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/x86_64/ia32/ia32entry.S | 6 | ||||
| -rw-r--r-- | arch/x86_64/ia32/sys_ia32.c | 19 |
2 files changed, 22 insertions, 3 deletions
diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S index 21868f9bed7..47565c3345d 100644 --- a/arch/x86_64/ia32/ia32entry.S +++ b/arch/x86_64/ia32/ia32entry.S @@ -620,7 +620,7 @@ ia32_sys_call_table: .quad quiet_ni_syscall /* tux */ .quad quiet_ni_syscall /* security */ .quad sys_gettid - .quad sys_readahead /* 225 */ + .quad sys32_readahead /* 225 */ .quad sys_setxattr .quad sys_lsetxattr .quad sys_fsetxattr @@ -645,7 +645,7 @@ ia32_sys_call_table: .quad compat_sys_io_getevents .quad compat_sys_io_submit .quad sys_io_cancel - .quad sys_fadvise64 /* 250 */ + .quad sys32_fadvise64 /* 250 */ .quad quiet_ni_syscall /* free_huge_pages */ .quad sys_exit_group .quad sys32_lookup_dcookie @@ -709,7 +709,7 @@ ia32_sys_call_table: .quad compat_sys_set_robust_list .quad compat_sys_get_robust_list .quad sys_splice - .quad sys_sync_file_range + .quad sys32_sync_file_range .quad sys_tee /* 315 */ .quad compat_sys_vmsplice .quad compat_sys_move_pages diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c index 200fdde18d9..99a78a3cce7 100644 --- a/arch/x86_64/ia32/sys_ia32.c +++ b/arch/x86_64/ia32/sys_ia32.c @@ -860,3 +860,22 @@ long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); } +asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, size_t count) +{ + return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); +} + +asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, + unsigned n_low, unsigned n_hi, int flags) +{ + return sys_sync_file_range(fd, + ((u64)off_hi << 32) | off_low, + ((u64)n_hi << 32) | n_low, flags); +} + +asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, size_t len, + int advice) +{ + return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, + len, advice); +} |