| 1 | /* Copyright (C) 2018-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #define USE_VERSIONED_RLIMIT |
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| 19 | #include <sysdeps/unix/sysv/linux/getrlimit64.c> |
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| 20 | versioned_symbol (libc, __getrlimit, getrlimit, GLIBC_2_27); |
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| 21 | versioned_symbol (libc, __getrlimit64, getrlimit64, GLIBC_2_27); |
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| 22 | |
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| 23 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_27) |
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| 24 | /* RLIM64_INFINITY was supposed to be a glibc convention rather than |
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| 25 | anything seen by the kernel, but it ended being passed to the kernel |
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| 26 | through the prlimit64 syscall. Given that a lot of binaries with |
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| 27 | the wrong constant value are in the wild, provide a wrapper function |
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| 28 | fixing the value after the syscall. */ |
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| 29 | # define OLD_RLIM64_INFINITY 0x7fffffffffffffffULL |
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| 30 | |
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| 31 | int |
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| 32 | attribute_compat_text_section |
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| 33 | __old_getrlimit64 (enum __rlimit_resource resource, |
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| 34 | struct rlimit64 *rlimits) |
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| 35 | { |
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| 36 | struct rlimit64 krlimits; |
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| 37 | |
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| 38 | if (__getrlimit64 (resource, &krlimits) < 0) |
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| 39 | return -1; |
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| 40 | |
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| 41 | if (krlimits.rlim_cur == RLIM64_INFINITY) |
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| 42 | rlimits->rlim_cur = OLD_RLIM64_INFINITY; |
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| 43 | else |
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| 44 | rlimits->rlim_cur = krlimits.rlim_cur; |
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| 45 | if (krlimits.rlim_max == RLIM64_INFINITY) |
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| 46 | rlimits->rlim_max = OLD_RLIM64_INFINITY; |
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| 47 | else |
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| 48 | rlimits->rlim_max = krlimits.rlim_max; |
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| 49 | |
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| 50 | return 0; |
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| 51 | } |
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| 52 | |
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| 53 | strong_alias (__old_getrlimit64, __old_getrlimit) |
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| 54 | compat_symbol (libc, __old_getrlimit, getrlimit, GLIBC_2_0); |
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| 55 | compat_symbol (libc, __old_getrlimit64, getrlimit64, GLIBC_2_1); |
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| 56 | #endif |
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| 57 | |
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