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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include "proc.h"
#include "procfs.h"
#include <rthw.h>
#include <rtdbg.h>
#include <fcntl.h>
#include <errno.h>
#include <dfs_dentry.h>
#if defined(RT_USING_SMART)
#include <lwp.h>
int proc_self_readlink(struct proc_dentry *dentry, char *buf, int len)
{
struct rt_lwp *lwp = RT_NULL;
lwp = lwp_self();
if (lwp)
{
rt_snprintf(buf, len, "%d", lwp_to_pid(lwp));
buf[len - 1] = 0;
return rt_strlen(buf);
}
else
{
rt_snprintf(buf, len, "null");
buf[len - 1] = 0;
return rt_strlen(buf);
}
return -1;
}
static const struct proc_ops proc_pid_fd_ops = {
.readlink = proc_self_readlink,
};
int proc_self_init(void)
{
struct proc_dentry *ent;
ent = proc_symlink("self", NULL, "NULL");
if (ent)
{
ent->ops = &proc_pid_fd_ops;
}
proc_release(ent);
return 0;
}
INIT_ENV_EXPORT(proc_self_init);
#endif
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