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sparc: switch compat {f,}truncate64() to COMPAT_SYSCALL_DEFINE 

... and drop the pointless checks - sys_truncate() itself
might've lacked the check when that stuff was first written,
but it has already grown one by the time that stuff went into
mainline.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-03-20 10:34:57 -04:00
parent 8c82ccd631
commit 3d0e354e4e
3 changed files with 12 additions and 18 deletions
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14
arch/sparc/kernel/sys_sparc32.c
View File

@ -52,20 +52,14 @@
#include "systbls.h"
asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, path, u32, high, u32, low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_truncate(path, (high << 32) | low);
return sys_truncate(path, ((u64)high << 32) | low);
}
asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, u32, high, u32, low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_ftruncate(fd, (high << 32) | low);
return sys_ftruncate(fd, ((u64)high << 32) | low);
}
static int cp_compat_stat64(struct kstat *stat,

12
arch/sparc/kernel/systbls.h
View File

@ -49,12 +49,12 @@ asmlinkage long sys_utrap_install(utrap_entry_t type,
asmlinkage long sys_memory_ordering(unsigned long model);
asmlinkage void sparc64_set_context(struct pt_regs *regs);
asmlinkage void sparc64_get_context(struct pt_regs *regs);
asmlinkage long sys32_truncate64(const char __user * path,
unsigned long high,
unsigned long low);
asmlinkage long sys32_ftruncate64(unsigned int fd,
unsigned long high,
unsigned long low);
asmlinkage long compat_sys_truncate64(const char __user * path,
u32 high,
u32 low);
asmlinkage long compat_sys_ftruncate64(unsigned int fd,
u32 high,
u32 low);
struct compat_stat64;
asmlinkage long compat_sys_stat64(const char __user * filename,
struct compat_stat64 __user *statbuf);

4
arch/sparc/kernel/systbls_64.S
View File

@ -34,8 +34,8 @@ sys_call_table32:
/*60*/ .word sys_umask, sys_chroot, compat_sys_newfstat, compat_sys_fstat64, sys_getpagesize
.word sys_msync, sys_vfork, compat_sys_pread64, compat_sys_pwrite64, sys_geteuid
/*70*/ .word sys_getegid, sys_mmap, sys_setreuid, sys_munmap, sys_mprotect
.word sys_madvise, sys_vhangup, sys32_truncate64, sys_mincore, sys_getgroups16
/*80*/ .word sys_setgroups16, sys_getpgrp, sys_setgroups, compat_sys_setitimer, sys32_ftruncate64
.word sys_madvise, sys_vhangup, compat_sys_truncate64, sys_mincore, sys_getgroups16
/*80*/ .word sys_setgroups16, sys_getpgrp, sys_setgroups, compat_sys_setitimer, compat_sys_ftruncate64
.word sys_swapon, compat_sys_getitimer, sys_setuid, sys_sethostname, sys_setgid
/*90*/ .word sys_dup2, sys_setfsuid, compat_sys_fcntl, compat_sys_select, sys_setfsgid
.word sys_fsync, sys_setpriority, sys_socket, sys_connect, sys_accept