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Diffstat (limited to 'kernel/sys.c')
-rw-r--r--kernel/sys.c40
1 files changed, 24 insertions, 16 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index f2b2d7aa381..b5b96e30e0d 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1272,42 +1272,41 @@ SYSCALL_DEFINE2(old_getrlimit, unsigned int, resource,
#endif
-SYSCALL_DEFINE2(setrlimit, unsigned int, resource, struct rlimit __user *, rlim)
+int do_setrlimit(struct task_struct *tsk, unsigned int resource,
+ struct rlimit *new_rlim)
{
- struct rlimit new_rlim, *old_rlim;
+ struct rlimit *old_rlim;
int retval;
if (resource >= RLIM_NLIMITS)
return -EINVAL;
- if (copy_from_user(&new_rlim, rlim, sizeof(*rlim)))
- return -EFAULT;
- if (new_rlim.rlim_cur > new_rlim.rlim_max)
+ if (new_rlim->rlim_cur > new_rlim->rlim_max)
return -EINVAL;
- if (resource == RLIMIT_NOFILE && new_rlim.rlim_max > sysctl_nr_open)
+ if (resource == RLIMIT_NOFILE && new_rlim->rlim_max > sysctl_nr_open)
return -EPERM;
- retval = security_task_setrlimit(current, resource, &new_rlim);
+ retval = security_task_setrlimit(tsk->group_leader, resource, new_rlim);
if (retval)
return retval;
- if (resource == RLIMIT_CPU && new_rlim.rlim_cur == 0) {
+ if (resource == RLIMIT_CPU && new_rlim->rlim_cur == 0) {
/*
* The caller is asking for an immediate RLIMIT_CPU
* expiry. But we use the zero value to mean "it was
* never set". So let's cheat and make it one second
* instead
*/
- new_rlim.rlim_cur = 1;
+ new_rlim->rlim_cur = 1;
}
- old_rlim = current->signal->rlim + resource;
- task_lock(current->group_leader);
- if (new_rlim.rlim_max > old_rlim->rlim_max &&
+ old_rlim = tsk->signal->rlim + resource;
+ task_lock(tsk->group_leader);
+ if (new_rlim->rlim_max > old_rlim->rlim_max &&
!capable(CAP_SYS_RESOURCE))
retval = -EPERM;
else
- *old_rlim = new_rlim;
- task_unlock(current->group_leader);
+ *old_rlim = *new_rlim;
+ task_unlock(tsk->group_leader);
if (retval || resource != RLIMIT_CPU)
goto out;
@@ -1318,14 +1317,23 @@ SYSCALL_DEFINE2(setrlimit, unsigned int, resource, struct rlimit __user *, rlim)
* very long-standing error, and fixing it now risks breakage of
* applications, so we live with it
*/
- if (new_rlim.rlim_cur == RLIM_INFINITY)
+ if (new_rlim->rlim_cur == RLIM_INFINITY)
goto out;
- update_rlimit_cpu(current, new_rlim.rlim_cur);
+ update_rlimit_cpu(tsk, new_rlim->rlim_cur);
out:
return retval;
}
+SYSCALL_DEFINE2(setrlimit, unsigned int, resource, struct rlimit __user *, rlim)
+{
+ struct rlimit new_rlim;
+
+ if (copy_from_user(&new_rlim, rlim, sizeof(*rlim)))
+ return -EFAULT;
+ return do_setrlimit(current, resource, &new_rlim);
+}
+
/*
* It would make sense to put struct rusage in the task_struct,
* except that would make the task_struct be *really big*. After