3 /*-
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
37  * Jan-Simon Pendry.
54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
68  * Copyright (c) 1993 Jan-Simon Pendry
71  * Jan-Simon Pendry.
92  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
144 	struct vnode *vp = ap->a_vp;  in procfs_rw()
145 	struct uio *uio = ap->a_uio;  in procfs_rw()
152 	if (uio->uio_offset < 0)  in procfs_rw()
156 	     procfs_proc_lock(vp->v_mount, pfs->pfs_pid, &p, ESRCH)) != 0)  in procfs_rw()
167 	mutex_enter(p->p_lock);  in procfs_rw()
168 	error = kauth_authorize_process(curl->l_cred, KAUTH_PROCESS_PROCFS,  in procfs_rw()
169 	    p, pfs, KAUTH_ARG(M2K(uio->uio_rw)), NULL);  in procfs_rw()
170 	mutex_exit(p->p_lock);  in procfs_rw()
177 	mutex_enter(p->p_lock);  in procfs_rw()
178 	LIST_FOREACH(l, &p->p_lwps, l_sibling) {  in procfs_rw()
179 		if (l->l_stat != LSZOMB)  in procfs_rw()
182 	/* Process is exiting if no-LWPS or all LWPs are LSZOMB */  in procfs_rw()
184 		mutex_exit(p->p_lock);  in procfs_rw()
190 	mutex_exit(p->p_lock);  in procfs_rw()
192 	switch (pfs->pfs_type) {  in procfs_rw()
343  * Get a string from userland into (bf).  Strip a trailing
350  * EINVAL:    file offset is non-zero.
355 vfs_getuserstr(struct uio *uio, char *bf, int *buflenp)  in vfs_getuserstr()  argument
360 	if (uio->uio_offset != 0)  in vfs_getuserstr()
366 	if (xlen < uio->uio_resid)  in vfs_getuserstr()
368 	xlen = uio->uio_resid;  in vfs_getuserstr()
370 	if ((error = uiomove(bf, xlen, uio)) != 0)  in vfs_getuserstr()
374 	uio->uio_offset = 0;  in vfs_getuserstr()
377 	bf[xlen] = '\0';  in vfs_getuserstr()
378 	xlen = strlen(bf);  in vfs_getuserstr()
379 	if (xlen > 0 && bf[xlen-1] == '\n')  in vfs_getuserstr()
380 		bf[--xlen] = '\0';  in vfs_getuserstr()
387 vfs_findname(const vfs_namemap_t *nm, const char *bf, int buflen)  in vfs_findname()  argument
390 	for (; nm->nm_name; nm++)  in vfs_findname()
391 		if (memcmp(bf, nm->nm_name, buflen+1) == 0)  in vfs_findname()
400 	const int flags = VFSTOPROC(mp)->pmnt_flags;  in procfs_use_linux_compat()
427 	if (tp != NULL && !rw_tryenter(&tp->p_reflock, RW_READER))  in procfs_proc_lock()
440 	rw_exit(&p->p_reflock);  in procfs_proc_unlock()
447 	const char *ename = p->p_emul->e_name;  in procfs_doemul()