1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <sysdep.h>
#include <sys/resource.h>
#include <unistd.h>
#include <errno.h>
/* Function depends on CMD:
1 = Return the limit on the size of a file, in units of 512 bytes.
2 = Set the limit on the size of a file to NEWLIMIT. Only the
super-user can increase the limit.
3 = illegal due to shared libraries; normally is
(Return the maximum possible address of the data segment.)
4 = Return the maximum number of files that the calling process
can open.
Returns -1 on errors. */
long int
__ulimit (cmd, newlimit)
int cmd;
long int newlimit;
{
int status;
switch (cmd)
{
case 1:
{
/* Get limit on file size. */
struct rlimit fsize;
status = getrlimit(RLIMIT_FSIZE, &fsize);
if (status < 0)
return -1;
/* Convert from bytes to 512 byte units. */
return fsize.rlim_cur / 512;
}
case 2:
/* Set limit on file size. */
{
struct rlimit fsize;
fsize.rlim_cur = newlimit * 512;
fsize.rlim_max = newlimit * 512;
return setrlimit(RLIMIT_FSIZE, &fsize);
}
case 4:
return sysconf(_SC_OPEN_MAX);
default:
errno = EINVAL;
return -1;
}
}
weak_alias (__ulimit, ulimit);
|
