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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2017-05-31 04:33:51 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-09 23:51:33 -0400 |
| commit | d9e968cb9f849770288f5fde3d8d3a5f7e339052 (patch) | |
| tree | 7ceab9b36a791cd24813420c140f2475e6af5e7d /kernel/sys.c | |
| parent | times(2): move compat to native (diff) | |
| download | linux-dev-d9e968cb9f849770288f5fde3d8d3a5f7e339052.tar.xz linux-dev-d9e968cb9f849770288f5fde3d8d3a5f7e339052.zip | |
getrlimit()/setrlimit(): move compat to native
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | kernel/sys.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 161b5eae9c77..873e6eaa314f 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1332,6 +1332,54 @@ SYSCALL_DEFINE2(getrlimit, unsigned int, resource, struct rlimit __user *, rlim) return ret; } +#ifdef CONFIG_COMPAT + +COMPAT_SYSCALL_DEFINE2(setrlimit, unsigned int, resource, + struct compat_rlimit __user *, rlim) +{ + struct rlimit r; + struct compat_rlimit r32; + + if (copy_from_user(&r32, rlim, sizeof(struct compat_rlimit))) + return -EFAULT; + + if (r32.rlim_cur == COMPAT_RLIM_INFINITY) + r.rlim_cur = RLIM_INFINITY; + else + r.rlim_cur = r32.rlim_cur; + if (r32.rlim_max == COMPAT_RLIM_INFINITY) + r.rlim_max = RLIM_INFINITY; + else + r.rlim_max = r32.rlim_max; + return do_prlimit(current, resource, &r, NULL); +} + +COMPAT_SYSCALL_DEFINE2(getrlimit, unsigned int, resource, + struct compat_rlimit __user *, rlim) +{ + struct rlimit r; + int ret; + + ret = do_prlimit(current, resource, NULL, &r); + if (!ret) { + struct rlimit r32; + if (r.rlim_cur > COMPAT_RLIM_INFINITY) + r32.rlim_cur = COMPAT_RLIM_INFINITY; + else + r32.rlim_cur = r.rlim_cur; + if (r.rlim_max > COMPAT_RLIM_INFINITY) + r32.rlim_max = COMPAT_RLIM_INFINITY; + else + r32.rlim_max = r.rlim_max; + + if (copy_to_user(rlim, &r32, sizeof(struct compat_rlimit))) + return -EFAULT; + } + return ret; +} + +#endif + #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT /* |