mirror of git://sourceware.org/git/glibc.git
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* Copyright (C) 1991-2025 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
|
|
#include <hurd.h>
|
|
#include <hurd/fd.h>
|
|
#include <hurd/resource.h>
|
|
|
|
/* Set the soft and hard limits for RESOURCE to *RLIMITS.
|
|
Only the super-user can increase hard limits.
|
|
Return 0 if successful, -1 if not (and sets errno). */
|
|
int
|
|
__setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
|
|
{
|
|
struct rlimit lim;
|
|
error_t err = 0;
|
|
mach_port_t host = MACH_PORT_NULL;
|
|
|
|
if (rlimits == NULL || (unsigned int) resource >= RLIMIT_NLIMITS)
|
|
return __hurd_fail (EINVAL);
|
|
|
|
lim = *rlimits;
|
|
|
|
/* Even though most limits do nothing, there is no inheritance, and hard
|
|
limits are not really hard, we just let any old call succeed to make
|
|
life easier for programs that expect normal behavior. */
|
|
|
|
if (lim.rlim_cur > lim.rlim_max)
|
|
lim.rlim_cur = lim.rlim_max;
|
|
|
|
retry:
|
|
HURD_CRITICAL_BEGIN;
|
|
__mutex_lock (&_hurd_rlimit_lock);
|
|
|
|
#ifdef HAVE_MACH_VM_SET_SIZE_LIMIT
|
|
if (resource == RLIMIT_AS)
|
|
{
|
|
if (host == MACH_PORT_NULL)
|
|
{
|
|
/* Check whether the privileged host control port is required */
|
|
if (_hurd_rlimits[resource].rlim_max < lim.rlim_max)
|
|
{
|
|
err = __get_privileged_ports (&host, NULL);
|
|
if (err)
|
|
goto fail;
|
|
}
|
|
else
|
|
host = __mach_host_self ();
|
|
}
|
|
|
|
err = __vm_set_size_limit (host, __mach_task_self (),
|
|
lim.rlim_cur, lim.rlim_max);
|
|
|
|
if (err == MIG_BAD_ID)
|
|
/* MIG_BAD_ID returned as kernel support is missing, clear error */
|
|
err = 0;
|
|
else if (err)
|
|
{
|
|
if (err == KERN_NO_ACCESS)
|
|
err = EPERM;
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
_hurd_rlimits[resource] = lim;
|
|
|
|
#ifdef HAVE_MACH_VM_SET_SIZE_LIMIT
|
|
fail:
|
|
#endif
|
|
__mutex_unlock (&_hurd_rlimit_lock);
|
|
HURD_CRITICAL_END;
|
|
|
|
if (err == EINTR)
|
|
/* Got a signal while inside an RPC of the critical section, retry */
|
|
goto retry;
|
|
|
|
if (host != MACH_PORT_NULL && host != __mach_host_self ())
|
|
__mach_port_deallocate (__mach_task_self (), host);
|
|
|
|
return __hurd_fail (err);
|
|
}
|
|
|
|
libc_hidden_def (__setrlimit)
|
|
weak_alias (__setrlimit, setrlimit)
|