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c4029823 | 1 | /* Copyright (C) 1991, 92, 94, 95, 96 Free Software Foundation, Inc. |
d2f5be2a UD |
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 Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | 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 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
d2f5be2a UD |
19 | #include <sysdep.h> |
20 | #include <sys/resource.h> | |
21 | #include <unistd.h> | |
22 | #include <errno.h> | |
23 | ||
24 | /* Function depends on CMD: | |
25 | 1 = Return the limit on the size of a file, in units of 512 bytes. | |
26 | 2 = Set the limit on the size of a file to NEWLIMIT. Only the | |
27 | super-user can increase the limit. | |
28 | 3 = illegal due to shared libraries; normally is | |
29 | (Return the maximum possible address of the data segment.) | |
30 | 4 = Return the maximum number of files that the calling process | |
31 | can open. | |
32 | Returns -1 on errors. */ | |
33 | long int | |
34 | __ulimit (cmd, newlimit) | |
35 | int cmd; | |
36 | long int newlimit; | |
37 | { | |
38 | int status; | |
39 | ||
40 | switch (cmd) | |
41 | { | |
42 | case 1: | |
43 | { | |
44 | /* Get limit on file size. */ | |
45 | struct rlimit fsize; | |
46 | ||
c4029823 | 47 | status = getrlimit (RLIMIT_FSIZE, &fsize); |
d2f5be2a UD |
48 | if (status < 0) |
49 | return -1; | |
50 | ||
51 | /* Convert from bytes to 512 byte units. */ | |
52 | return fsize.rlim_cur / 512; | |
53 | } | |
54 | case 2: | |
55 | /* Set limit on file size. */ | |
56 | { | |
57 | struct rlimit fsize; | |
58 | fsize.rlim_cur = newlimit * 512; | |
59 | fsize.rlim_max = newlimit * 512; | |
c4029823 UD |
60 | |
61 | return setrlimit (RLIMIT_FSIZE, &fsize); | |
d2f5be2a UD |
62 | } |
63 | case 4: | |
c4029823 | 64 | return sysconf (_SC_OPEN_MAX); |
d2f5be2a UD |
65 | |
66 | default: | |
c4029823 | 67 | __set_errno (EINVAL); |
d2f5be2a UD |
68 | return -1; |
69 | } | |
70 | } | |
71 | ||
72 | weak_alias (__ulimit, ulimit); |