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045c13d1 | 1 | /* Linux setrlimit64 implementation (64 bits off_t). |
bfff8b1b | 2 | Copyright (C) 2010-2017 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 | |
24 | linking setlimit64 to {__}setrlimit does not throw a type error. */ | |
25 | #undef settrlimit | |
26 | #undef __sttrlimit | |
27 | #define setrlimit setrlimit_redirect | |
28 | #define __setrlimit __setrlimit_redirect | |
29 | #include <sys/resource.h> | |
30 | #undef setrlimit | |
31 | #undef __setrlimit | |
5bd6dc5c UD |
32 | |
33 | /* Set the soft and hard limits for RESOURCE to *RLIMITS. | |
34 | Only the super-user can increase hard limits. | |
35 | Return 0 if successful, -1 if not (and sets errno). */ | |
36 | int | |
045c13d1 | 37 | __setrlimit64 (enum __rlimit_resource resource, const struct rlimit64 *rlimits) |
5bd6dc5c | 38 | { |
045c13d1 AZ |
39 | int res; |
40 | ||
41 | #ifdef __NR_prlimit64 | |
42 | res = INLINE_SYSCALL_CALL (prlimit64, 0, resource, rlimits, NULL); | |
e5dee2c8 | 43 | if (res == 0 || errno != ENOSYS) |
5bd6dc5c | 44 | return res; |
045c13d1 AZ |
45 | #endif |
46 | ||
47 | /* The fallback code only makes sense if the platform supports | |
48 | __NR_setrlimit. */ | |
49 | #ifdef __NR_setrlimit | |
50 | # if !__RLIM_T_MATCHES_RLIM64_T | |
5bd6dc5c UD |
51 | struct rlimit rlimits32; |
52 | ||
53 | if (rlimits->rlim_cur >= RLIM_INFINITY) | |
54 | rlimits32.rlim_cur = RLIM_INFINITY; | |
55 | else | |
56 | rlimits32.rlim_cur = rlimits->rlim_cur; | |
57 | if (rlimits->rlim_max >= RLIM_INFINITY) | |
58 | rlimits32.rlim_max = RLIM_INFINITY; | |
59 | else | |
60 | rlimits32.rlim_max = rlimits->rlim_max; | |
045c13d1 AZ |
61 | # else |
62 | # define rlimits32 (*rlimits) | |
63 | # endif | |
5bd6dc5c | 64 | |
045c13d1 | 65 | res = INLINE_SYSCALL_CALL (setrlimit, resource, &rlimits32); |
5bd6dc5c | 66 | #endif |
045c13d1 AZ |
67 | |
68 | return res; | |
5bd6dc5c | 69 | } |
045c13d1 AZ |
70 | weak_alias (__setrlimit64, setrlimit64) |
71 | ||
72 | #if __RLIM_T_MATCHES_RLIM64_T | |
73 | strong_alias (__setrlimit64, __setrlimit) | |
74 | weak_alias (__setrlimit64, setrlimit) | |
75 | #endif |