*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->FreeBSD man pages -> revoke (2)              



NAME    [Toc]    [Back]

     revoke -- revoke file access

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <unistd.h>

     revoke(const char *path);

DESCRIPTION    [Toc]    [Back]

     The revoke() system call invalidates all current open file descriptors in
     the system for the file named by path.  Subsequent operations on any such
     descriptors fail, with the exceptions that a read() from a character
     device file which has been revoked returns a count of zero (end of file),
     and a close() system call will succeed.  If the file is a special file
     for a device which is open, the device close function is called as if all
     open references to the file had been closed.

     Access to a file may be revoked only by its owner or the super user.  The
     revoke() system call is currently supported only for block and character
     special device files.  It is normally used to prepare a terminal device
     for a new login session, preventing any access by a previous user of the

RETURN VALUES    [Toc]    [Back]

     The revoke() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the

ERRORS    [Toc]    [Back]

     Access to the named file is revoked unless one of the following:

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or
			an entire path name exceeded 1024 characters.

     [ENOENT]		The named file or a component of the path name does
			not exist.

     [EACCES]		Search permission is denied for a component of the
			path prefix.

     [ELOOP]		Too many symbolic links were encountered in translating
 the pathname.

     [EFAULT]		The path argument points outside the process's allocated
 address space.

     [EINVAL]		The implementation does not support the revoke() operation
 on the named file.

     [EPERM]		The caller is neither the owner of the file nor the
			super user.

SEE ALSO    [Toc]    [Back]


HISTORY    [Toc]    [Back]

     The revoke() system call first appeared in 4.3BSD-Reno.

FreeBSD 5.2.1			 June 4, 1993			 FreeBSD 5.2.1
[ Back ]
 Similar pages
Name OS Title
sgi_revoke IRIX revoke access to a file
VOP_REVOKE FreeBSD revoke access to a device and its aliases
CSSM_CL_CrlAddCert Tru64 Revoke an input certificate (CDSA)
CL_CrlAddCert Tru64 Revoke an input certificate (CDSA)
vdevgone OpenBSD revoke all specified minor numbered vnodes for a device
AFclosefile IRIX close an audio file, update file header if file was opened for write access.
TP_CertRevoke Tru64 Determine if the revoking certificate group can revoke the subject certificate group (CDSA)
CSSM_TP_CertRevoke Tru64 Determine if the revoking certificate group can revoke the subject certificate group (CDSA)
fhopen NetBSD access file via file handle
fhstatfs FreeBSD access file via file handle
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service