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consolidate compat lookup_dcookie() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-02-25 18:42:04 -05:00
parent 76b021d053
commit d5dc77bfee
18 changed files with 20 additions and 60 deletions
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7
arch/arm64/kernel/sys32.S
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@ -84,13 +84,6 @@ compat_sys_readahead_wrapper:
b sys_readahead
ENDPROC(compat_sys_readahead_wrapper)
compat_sys_lookup_dcookie:
orr x0, x0, x1, lsl #32
mov w1, w2
mov w2, w3
b sys_lookup_dcookie
ENDPROC(compat_sys_lookup_dcookie)
compat_sys_fadvise64_64_wrapper:
mov w6, w1
orr x1, x2, x3, lsl #32

6
arch/mips/kernel/linux32.c
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@ -259,12 +259,6 @@ asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
merge_64(len_a4, len_a5));
}
asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
size_t len)
{
return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
}
SYSCALL_DEFINE6(32_fanotify_mark, int, fanotify_fd, unsigned int, flags,
u64, a3, u64, a4, int, dfd, const char __user *, pathname)
{

2
arch/mips/kernel/scall64-o32.S
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@ -439,7 +439,7 @@ sys_call_table:
PTR compat_sys_io_submit
PTR sys_io_cancel /* 4245 */
PTR sys_exit_group
PTR sys32_lookup_dcookie
PTR compat_sys_lookup_dcookie
PTR sys_epoll_create
PTR sys_epoll_ctl
PTR sys_epoll_wait /* 4250 */

7
arch/parisc/kernel/sys_parisc32.c
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@ -75,13 +75,6 @@ asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
return sys_semctl (semid, semnum, cmd, arg);
}
long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
size_t len)
{
return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
buf, len);
}
asmlinkage long compat_sys_fanotify_mark(int fan_fd, int flags, u32 mask_hi,
u32 mask_lo, int fd,
const char __user *pathname)

2
arch/parisc/kernel/syscall_table.S
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@ -318,7 +318,7 @@
ENTRY_SAME(alloc_hugepages) /* 220 */
ENTRY_SAME(free_hugepages)
ENTRY_SAME(exit_group)
ENTRY_DIFF(lookup_dcookie)
ENTRY_COMP(lookup_dcookie)
ENTRY_SAME(epoll_create)
ENTRY_SAME(epoll_ctl) /* 225 */
ENTRY_SAME(epoll_wait)

2
arch/powerpc/include/asm/systbl.h
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@ -239,7 +239,7 @@ SYSCALL_SPU(io_cancel)
SYSCALL(set_tid_address)
SYSX_SPU(sys_fadvise64,ppc32_fadvise64,sys_fadvise64)
SYSCALL(exit_group)
SYSX(sys_lookup_dcookie,ppc32_lookup_dcookie,sys_lookup_dcookie)
COMPAT_SYS(lookup_dcookie)
SYSCALL_SPU(epoll_create)
SYSCALL_SPU(epoll_ctl)
SYSCALL_SPU(epoll_wait)

7
arch/powerpc/kernel/sys_ppc32.c
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@ -177,13 +177,6 @@ asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long h
return sys_ftruncate(fd, (high << 32) | low);
}
long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
size_t len)
{
return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
buf, len);
}
long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
size_t len, int advice)
{

7
arch/s390/kernel/compat_wrapper.S
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@ -926,13 +926,6 @@ ENTRY(sys_epoll_wait_wrapper)
lgfr %r5,%r5 # int
jg sys_epoll_wait # branch to system call
ENTRY(sys32_lookup_dcookie_wrapper)
sllg %r2,%r2,32 # get high word of 64bit dcookie
or %r2,%r3 # get low word of 64bit dcookie
llgtr %r3,%r4 # char *
llgfr %r4,%r5 # size_t
jg sys_lookup_dcookie
ENTRY(sys32_fadvise64_wrapper)
lgfr %r2,%r2 # int
sllg %r3,%r3,32 # get high word of 64bit loff_t

2
arch/s390/kernel/syscalls.S
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@ -118,7 +118,7 @@ SYSCALL(sys_newstat,sys_newstat,compat_sys_newstat_wrapper)
SYSCALL(sys_newlstat,sys_newlstat,compat_sys_newlstat_wrapper)
SYSCALL(sys_newfstat,sys_newfstat,compat_sys_newfstat_wrapper)
NI_SYSCALL /* old uname syscall */
SYSCALL(sys_lookup_dcookie,sys_lookup_dcookie,sys32_lookup_dcookie_wrapper) /* 110 */
SYSCALL(sys_lookup_dcookie,sys_lookup_dcookie,compat_sys_lookup_dcookie) /* 110 */
SYSCALL(sys_vhangup,sys_vhangup,sys_vhangup)
NI_SYSCALL /* old "idle" system call */
NI_SYSCALL /* vm86old for i386 */

8
arch/sparc/kernel/sys_sparc32.c
View File

@ -303,14 +303,6 @@ long compat_sys_fadvise64_64(int fd,
advice);
}
long sys32_lookup_dcookie(unsigned long cookie_high,
unsigned long cookie_low,
char __user *buf, size_t len)
{
return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
buf, len);
}
long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
{
return sys_sync_file_range(fd,

2
arch/sparc/kernel/systbls_64.S
View File

@ -59,7 +59,7 @@ sys_call_table32:
/*190*/ .word sys_init_module, sys_sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl
.word sys_epoll_wait, sys_ioprio_set, sys_getppid, compat_sys_sparc_sigaction, sys_sgetmask
/*200*/ .word sys_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir
.word sys32_readahead, sys32_socketcall, sys_syslog, sys32_lookup_dcookie, sys32_fadvise64
.word sys32_readahead, sys32_socketcall, sys_syslog, compat_sys_lookup_dcookie, sys32_fadvise64
/*210*/ .word sys32_fadvise64_64, sys_tgkill, sys_waitpid, sys_swapoff, compat_sys_sysinfo
.word compat_sys_ipc, sys32_sigreturn, sys_clone, sys_ioprio_get, compat_sys_adjtimex
/*220*/ .word compat_sys_sigprocmask, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid

5
arch/tile/kernel/compat.c
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@ -54,11 +54,6 @@ long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low);
}
long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len)
{
return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len);
}
long compat_sys_sync_file_range2(int fd, unsigned int flags,
u32 offset_lo, u32 offset_hi,
u32 nbytes_lo, u32 nbytes_hi)

6
arch/x86/ia32/sys_ia32.c
View File

@ -226,12 +226,6 @@ long sys32_vm86_warning(void)
return -ENOSYS;
}
long sys32_lookup_dcookie(u32 addr_low, u32 addr_high,
char __user *buf, size_t len)
{
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)
{

1
arch/x86/include/asm/sys_ia32.h
View File

@ -45,7 +45,6 @@ asmlinkage long sys32_personality(unsigned long);
long sys32_kill(int, int);
long sys32_fadvise64_64(int, __u32, __u32, __u32, __u32, int);
long sys32_vm86_warning(void);
long sys32_lookup_dcookie(u32, u32, char __user *, size_t);
asmlinkage ssize_t sys32_readahead(int, unsigned, unsigned, size_t);
asmlinkage long sys32_sync_file_range(int, unsigned, unsigned,

2
arch/x86/syscalls/syscall_32.tbl
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@ -259,7 +259,7 @@
250 i386 fadvise64 sys_fadvise64 sys32_fadvise64
# 251 is available for reuse (was briefly sys_set_zone_reclaim)
252 i386 exit_group sys_exit_group
253 i386 lookup_dcookie sys_lookup_dcookie sys32_lookup_dcookie
253 i386 lookup_dcookie sys_lookup_dcookie compat_sys_lookup_dcookie
254 i386 epoll_create sys_epoll_create
255 i386 epoll_ctl sys_epoll_ctl
256 i386 epoll_wait sys_epoll_wait

12
fs/dcookies.c
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@ -25,6 +25,7 @@
#include <linux/dcookies.h>
#include <linux/mutex.h>
#include <linux/path.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
/* The dcookies are allocated from a kmem_cache and
@ -202,6 +203,17 @@ out:
return err;
}
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, size_t, len)
{
#ifdef __BIG_ENDIAN
return sys_lookup_dcookie(((u64)w0 << 32) | w1, buf, len);
#else
return sys_lookup_dcookie(((u64)w1 << 32) | w0, buf, len);
#endif
}
#endif
static int dcookie_init(void)
{
struct list_head * d;

1
include/linux/compat.h
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@ -429,6 +429,7 @@ extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
compat_long_t addr, compat_long_t data);
asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, size_t);
/*
* epoll (fs/eventpoll.c) compat bits follow ...
*/

1
kernel/sys_ni.c
View File

@ -20,6 +20,7 @@ cond_syscall(sys_quotactl);
cond_syscall(sys32_quotactl);
cond_syscall(sys_acct);
cond_syscall(sys_lookup_dcookie);
cond_syscall(compat_sys_lookup_dcookie);
cond_syscall(sys_swapon);
cond_syscall(sys_swapoff);
cond_syscall(sys_kexec_load);