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045c13d1 | 1 | /* Linux getrlimit64 implementation (64 bits rlim_t). |
688903eb | 2 | Copyright (C) 2010-2018 Free Software Foundation, Inc. |
5bd6dc5c UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
5bd6dc5c UD |
18 | |
19 | #include <errno.h> | |
5bd6dc5c | 20 | #include <sys/types.h> |
045c13d1 AZ |
21 | #include <shlib-compat.h> |
22 | ||
23 | /* Add this redirection so the strong_alias for __RLIM_T_MATCHES_RLIM64_T | |
d35989be | 24 | linking getrlimit64 to {__}getrlimit does not throw a type error. */ |
045c13d1 AZ |
25 | #undef getrlimit |
26 | #undef __getrlimit | |
27 | #define getrlimit getrlimit_redirect | |
28 | #define __getrlimit __getrlimit_redirect | |
29 | #include <sys/resource.h> | |
30 | #undef getrlimit | |
31 | #undef __getrlimit | |
5bd6dc5c UD |
32 | |
33 | /* Put the soft and hard limits for RESOURCE in *RLIMITS. | |
34 | Returns 0 if successful, -1 if not (and sets errno). */ | |
35 | int | |
1a2325c0 | 36 | __getrlimit64 (enum __rlimit_resource resource, struct rlimit64 *rlimits) |
5bd6dc5c | 37 | { |
695d7d13 | 38 | return INLINE_SYSCALL_CALL (prlimit64, 0, resource, NULL, rlimits); |
5bd6dc5c | 39 | } |
1a2325c0 | 40 | libc_hidden_def (__getrlimit64) |
045c13d1 AZ |
41 | |
42 | #if __RLIM_T_MATCHES_RLIM64_T | |
43 | /* If both rlim_t and rlimt64_t are essentially the same type we can use | |
44 | alias both interfaces. */ | |
45 | strong_alias (__getrlimit64, __GI_getrlimit) | |
46 | strong_alias (__getrlimit64, __GI___getrlimit) | |
47 | strong_alias (__getrlimit64, __getrlimit) | |
8e900969 AJ |
48 | /* Alpha defines a versioned getrlimit{64}. */ |
49 | # ifndef USE_VERSIONED_RLIMIT | |
045c13d1 | 50 | weak_alias (__getrlimit64, getrlimit) |
8e900969 AJ |
51 | weak_alias (__getrlimit64, getrlimit64) |
52 | libc_hidden_weak (getrlimit64) | |
53 | # else | |
54 | weak_alias (__getrlimit64, __GI_getrlimit64) | |
55 | # endif | |
045c13d1 | 56 | |
8e900969 | 57 | #elif SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) |
045c13d1 | 58 | /* Back compatible 2GiB limited rlimit. */ |
0e7d5b6e L |
59 | extern int __new_getrlimit (enum __rlimit_resource, struct rlimit *) |
60 | attribute_hidden; | |
045c13d1 AZ |
61 | |
62 | int | |
63 | attribute_compat_text_section | |
64 | __old_getrlimit64 (enum __rlimit_resource resource, struct rlimit64 *rlimits) | |
65 | { | |
045c13d1 | 66 | struct rlimit rlimits32; |
045c13d1 AZ |
67 | |
68 | if (__new_getrlimit (resource, &rlimits32) < 0) | |
69 | return -1; | |
70 | ||
71 | if (rlimits32.rlim_cur == RLIM_INFINITY) | |
72 | rlimits->rlim_cur = RLIM64_INFINITY >> 1; | |
73 | else | |
74 | rlimits->rlim_cur = rlimits32.rlim_cur; | |
75 | if (rlimits32.rlim_max == RLIM_INFINITY) | |
76 | rlimits->rlim_max = RLIM64_INFINITY >> 1; | |
77 | else | |
78 | rlimits->rlim_max = rlimits32.rlim_max; | |
79 | ||
80 | return 0; | |
81 | } | |
82 | versioned_symbol (libc, __getrlimit64, getrlimit64, GLIBC_2_2); | |
83 | compat_symbol (libc, __old_getrlimit64, getrlimit64, GLIBC_2_1); | |
c2e014cc AJ |
84 | #else |
85 | weak_alias (__getrlimit64, getrlimit64) | |
86 | libc_hidden_weak (getrlimit64) | |
8e900969 | 87 | #endif /* __RLIM_T_MATCHES_RLIM64_T */ |