| VOP_ACCESS.9 (32eef9aeb1f39a1623cea55da147c89abbd5b9a5) | VOP_ACCESS.9 (be8989d5163307904446f54c80e4d1af24a19420) |
|---|---|
| 1.\" -*- nroff -*- 2.\" -*- nroff -*- 3.\" 4.\" Copyright (c) 1996 Doug Rabson 5.\" 6.\" All rights reserved. 7.\" 8.\" This program is free software. --- 25 unchanged lines hidden (view full) --- 34.Dt VOP_ACCESS 9 35.Sh NAME 36.Nm VOP_ACCESS 37.Nd "check access permissions of a file or Unix domain socket" 38.Sh SYNOPSIS 39.In sys/param.h 40.In sys/vnode.h 41.Ft int | 1.\" -*- nroff -*- 2.\" -*- nroff -*- 3.\" 4.\" Copyright (c) 1996 Doug Rabson 5.\" 6.\" All rights reserved. 7.\" 8.\" This program is free software. --- 25 unchanged lines hidden (view full) --- 34.Dt VOP_ACCESS 9 35.Sh NAME 36.Nm VOP_ACCESS 37.Nd "check access permissions of a file or Unix domain socket" 38.Sh SYNOPSIS 39.In sys/param.h 40.In sys/vnode.h 41.Ft int |
| 42.Fn VOP_ACCESS "struct vnode *vp" "int mode" "struct ucred *cred" "struct proc *p" | 42.Fn VOP_ACCESS "struct vnode *vp" "int mode" "struct ucred *cred" "struct thread *td" |
| 43.Sh DESCRIPTION 44This entry point checks the access permissions of the file against the 45given credentials. 46.Pp 47Its arguments are: 48.Bl -tag -width mode 49.It Ar vp 50the vnode of the file to check 51.It Ar mode 52the type of access required 53.It Ar cred 54the user credentials to check | 43.Sh DESCRIPTION 44This entry point checks the access permissions of the file against the 45given credentials. 46.Pp 47Its arguments are: 48.Bl -tag -width mode 49.It Ar vp 50the vnode of the file to check 51.It Ar mode 52the type of access required 53.It Ar cred 54the user credentials to check |
| 55.It Ar p 56the process which is checking | 55.It Ar td 56the thread which is checking |
| 57.El 58.Pp 59The 60.Fa mode 61is a mask which can contain 62.Dv VREAD , 63.Dv VWRITE 64or 65.Dv VEXEC . 66.Sh LOCKS 67The vnode will be locked on entry and should remain locked on return. 68.Sh RETURN VALUES 69If the file is accessible in the specified way, then zero is returned, 70otherwise an appropriate error code is returned. 71.Sh PSEUDOCODE 72.Bd -literal 73int | 57.El 58.Pp 59The 60.Fa mode 61is a mask which can contain 62.Dv VREAD , 63.Dv VWRITE 64or 65.Dv VEXEC . 66.Sh LOCKS 67The vnode will be locked on entry and should remain locked on return. 68.Sh RETURN VALUES 69If the file is accessible in the specified way, then zero is returned, 70otherwise an appropriate error code is returned. 71.Sh PSEUDOCODE 72.Bd -literal 73int |
| 74vop_access(struct vnode *vp, int mode, struct ucred *cred, struct proc *p) | 74vop_access(struct vnode *vp, int mode, struct ucred *cred, struct thread *td) |
| 75{ 76 int error; 77 78 /* 79 * Disallow write attempts on read-only file systems; 80 * unless the file is a socket, fifo, or a block or 81 * character device resident on the file system. 82 */ --- 67 unchanged lines hidden --- | 75{ 76 int error; 77 78 /* 79 * Disallow write attempts on read-only file systems; 80 * unless the file is a socket, fifo, or a block or 81 * character device resident on the file system. 82 */ --- 67 unchanged lines hidden --- |