1 /* Copyright (C) 2018-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #define USE_VERSIONED_RLIMIT
19 #include <sysdeps/unix/sysv/linux/setrlimit64.c>
20 versioned_symbol (libc, __setrlimit, setrlimit, GLIBC_2_27);
21 versioned_symbol (libc, __setrlimit64, setrlimit64, GLIBC_2_27);
22
23 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_27)
24 /* RLIM64_INFINITY was supposed to be a glibc convention rather than
25 anything seen by the kernel, but it ended being passed to the kernel
26 through the prlimit64 syscall. Given that a lot of binaries with
27 the wrong constant value are in the wild, provide a wrapper function
28 fixing the value before the syscall. */
29 # define OLD_RLIM64_INFINITY 0x7fffffffffffffffULL
30
31 int
32 attribute_compat_text_section
__old_setrlimit64(enum __rlimit_resource resource,const struct rlimit64 * rlimits)33 __old_setrlimit64 (enum __rlimit_resource resource,
34 const struct rlimit64 *rlimits)
35 {
36 struct rlimit64 krlimits;
37
38 if (rlimits->rlim_cur == OLD_RLIM64_INFINITY)
39 krlimits.rlim_cur = RLIM64_INFINITY;
40 else
41 krlimits.rlim_cur = rlimits->rlim_cur;
42 if (rlimits->rlim_max == OLD_RLIM64_INFINITY)
43 krlimits.rlim_max = RLIM64_INFINITY;
44 else
45 krlimits.rlim_max = rlimits->rlim_max;
46
47 return __setrlimit64 (resource, &krlimits);
48 }
49
50 strong_alias (__old_setrlimit64, __old_setrlimit)
51 compat_symbol (libc, __old_setrlimit, setrlimit, GLIBC_2_0);
52 compat_symbol (libc, __old_setrlimit64, setrlimit64, GLIBC_2_1);
53 #endif
54