#include <linux/mount.h>
#include <linux/security.h>
#include <linux/ptrace.h>
-#include <linux/seccomp.h>
#include <linux/cpuset.h>
#include <linux/audit.h>
#include <linux/poll.h>
int res = 0;
struct mm_struct *mm = get_task_mm(task);
if (mm) {
- unsigned int len = mm->env_end - mm->env_start;
+ unsigned int len;
+
+ res = -ESRCH;
+ if (!ptrace_may_attach(task))
+ goto out;
+
+ len = mm->env_end - mm->env_start;
if (len > PAGE_SIZE)
len = PAGE_SIZE;
res = access_process_vm(task, mm->env_start, buffer, len, 0);
- if (!ptrace_may_attach(task))
- res = -ESRCH;
+out:
mmput(mm);
}
return res;
*/
static int proc_pid_schedstat(struct task_struct *task, char *buffer)
{
- return sprintf(buffer, "%lu %lu %lu\n",
+ return sprintf(buffer, "%llu %llu %lu\n",
task->sched_info.cpu_time,
task->sched_info.run_delay,
task->sched_info.pcnt);
.write = oom_adjust_write,
};
+#ifdef CONFIG_MMU
static ssize_t clear_refs_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
static struct file_operations proc_clear_refs_operations = {
.write = clear_refs_write,
};
+#endif
#ifdef CONFIG_AUDITSYSCALL
#define TMPBUFLEN 21
};
#endif
-#ifdef CONFIG_SECCOMP
-static ssize_t seccomp_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct task_struct *tsk = get_proc_task(file->f_dentry->d_inode);
- char __buf[20];
- size_t len;
-
- if (!tsk)
- return -ESRCH;
- /* no need to print the trailing zero, so use only len */
- len = sprintf(__buf, "%u\n", tsk->seccomp.mode);
- put_task_struct(tsk);
-
- return simple_read_from_buffer(buf, count, ppos, __buf, len);
-}
-
-static ssize_t seccomp_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct task_struct *tsk = get_proc_task(file->f_dentry->d_inode);
- char __buf[20], *end;
- unsigned int seccomp_mode;
- ssize_t result;
-
- result = -ESRCH;
- if (!tsk)
- goto out_no_task;
-
- /* can set it only once to be even more secure */
- result = -EPERM;
- if (unlikely(tsk->seccomp.mode))
- goto out;
-
- result = -EFAULT;
- memset(__buf, 0, sizeof(__buf));
- count = min(count, sizeof(__buf) - 1);
- if (copy_from_user(__buf, buf, count))
- goto out;
-
- seccomp_mode = simple_strtoul(__buf, &end, 0);
- if (*end == '\n')
- end++;
- result = -EINVAL;
- if (seccomp_mode && seccomp_mode <= NR_SECCOMP_MODES) {
- tsk->seccomp.mode = seccomp_mode;
- set_tsk_thread_flag(tsk, TIF_SECCOMP);
- } else
- goto out;
- result = -EIO;
- if (unlikely(!(end - __buf)))
- goto out;
- result = end - __buf;
-out:
- put_task_struct(tsk);
-out_no_task:
- return result;
-}
-
-static const struct file_operations proc_seccomp_operations = {
- .read = seccomp_read,
- .write = seccomp_write,
-};
-#endif /* CONFIG_SECCOMP */
-
#ifdef CONFIG_FAULT_INJECTION
static ssize_t proc_fault_inject_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
};
#endif
+#ifdef CONFIG_SCHED_DEBUG
+/*
+ * Print out various scheduling related per-task fields:
+ */
+static int sched_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct task_struct *p;
+
+ WARN_ON(!inode);
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+ proc_sched_show_task(p, m);
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t
+sched_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct task_struct *p;
+
+ WARN_ON(!inode);
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+ proc_sched_set_task(p);
+
+ put_task_struct(p);
+
+ return count;
+}
+
+static int sched_open(struct inode *inode, struct file *filp)
+{
+ int ret;
+
+ ret = single_open(filp, sched_show, NULL);
+ if (!ret) {
+ struct seq_file *m = filp->private_data;
+
+ m->private = inode;
+ }
+ return ret;
+}
+
+static const struct file_operations proc_pid_sched_operations = {
+ .open = sched_open,
+ .read = seq_read,
+ .write = sched_write,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+#endif
+
static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct inode *inode = dentry->d_inode;
INF("environ", S_IRUSR, pid_environ),
INF("auxv", S_IRUSR, pid_auxv),
INF("status", S_IRUGO, pid_status),
+#ifdef CONFIG_SCHED_DEBUG
+ REG("sched", S_IRUGO|S_IWUSR, pid_sched),
+#endif
INF("cmdline", S_IRUGO, pid_cmdline),
INF("stat", S_IRUGO, tgid_stat),
INF("statm", S_IRUGO, pid_statm),
REG("numa_maps", S_IRUGO, numa_maps),
#endif
REG("mem", S_IRUSR|S_IWUSR, mem),
-#ifdef CONFIG_SECCOMP
- REG("seccomp", S_IRUSR|S_IWUSR, seccomp),
-#endif
LNK("cwd", cwd),
LNK("root", root),
LNK("exe", exe),
INF("environ", S_IRUSR, pid_environ),
INF("auxv", S_IRUSR, pid_auxv),
INF("status", S_IRUGO, pid_status),
+#ifdef CONFIG_SCHED_DEBUG
+ REG("sched", S_IRUGO|S_IWUSR, pid_sched),
+#endif
INF("cmdline", S_IRUGO, pid_cmdline),
INF("stat", S_IRUGO, tid_stat),
INF("statm", S_IRUGO, pid_statm),
REG("numa_maps", S_IRUGO, numa_maps),
#endif
REG("mem", S_IRUSR|S_IWUSR, mem),
-#ifdef CONFIG_SECCOMP
- REG("seccomp", S_IRUSR|S_IWUSR, seccomp),
-#endif
LNK("cwd", cwd),
LNK("root", root),
LNK("exe", exe),
projects / mv-sheeva.git / blobdiff