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take compat_sys_old_getrlimit() to native syscall

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... and sanitize the ifdefs in there

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-05-26 22:04:29 -04:00
parent 123dbfe088
commit 613763a1f0
6 changed files with 25 additions and 33 deletions
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kernel/compat.c
-29
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@@ -468,35 +468,6 @@ COMPAT_SYSCALL_DEFINE2(setrlimit, unsigned int, resource,
return do_prlimit(current, resource, &r, NULL);
}
#ifdef COMPAT_RLIM_OLD_INFINITY
COMPAT_SYSCALL_DEFINE2(old_getrlimit, unsigned int, resource,
struct compat_rlimit __user *, rlim)
{
struct rlimit r;
int ret;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_old_getrlimit(resource, (struct rlimit __user *)&r);
set_fs(old_fs);
if (!ret) {
if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
r.rlim_cur = COMPAT_RLIM_INFINITY;
if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY)
r.rlim_max = COMPAT_RLIM_INFINITY;
if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
__put_user(r.rlim_cur, &rlim->rlim_cur) ||
__put_user(r.rlim_max, &rlim->rlim_max))
return -EFAULT;
}
return ret;
}
#endif
COMPAT_SYSCALL_DEFINE2(getrlimit, unsigned int, resource,
struct compat_rlimit __user *, rlim)
{