CHFLAGS(2)	    UNIX Programmer's Manual	       CHFLAGS(2)


NAME
     chflags, fchflags - set file flags

SYNOPSIS
     #include <sys/stat.h>

     int
     chflags(path, flags)
     char *path;
     u_short flags;

     int
     fchflags(fd, flags)
     int fd;
     u_short flags;

DESCRIPTION
     The file whose name is given by path or referenced by the
     descriptor fd has its flags changed to flags .

     The flags specified are formed by or'ing the following
     values

     UF_NODUMP	    Do not dump the file.

     UF_IMMUTABLE   The file may not be changed.

     UF_APPEND	    The file may only be appended to.

     ARCHIVED	    File is archived.

     SF_IMMUTABLE   The file may not be changed.

     SF_APPEND	    The file may only be appended to.

     The UF_IMMUTABLE and UF_APPEND flags may be set or unset by
     either the owner of a file or the super-user.

     The SF_IMMUTABLE and SF_APPEND flags may only be set or
     unset by the super-user.  They may be set at any time, but
     normally may only be unset when the system is in single-user
     mode.  (See init(8) for details.)

RETURN VALUES
     Upon successful completion, a value of 0 is returned.  Oth-
     erwise, -1 is returned and the global variable errno is set
     to indicate the error.

ERRORS
     Chflags will fail if:

     ENOTDIR	    A component of the path prefix is not a


Printed 11/26/99	November 28, 1994			1


CHFLAGS(2)	    UNIX Programmer's Manual	       CHFLAGS(2)


		    directory.

     EINVAL	    The pathname contains a character with the
		    high-order bit set.

     ENAMETOOLONG   A component of a pathname exceeded 63 charac-
		    ters, or an entire path name exceeded 255
		    characters.

     ENOENT	    The named file 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.

     EPERM	    The effective user ID does not match the
		    owner of the file and the effective user ID
		    is not the super-user.

     EROFS	    The named file resides on a read-only file
		    system.

     EFAULT	    path points outside the process's allocated
		    address space.

     EIO	    An I/O error occurred while reading from or
		    writing to the file system.

     fchflags will fail if:

     EBADF	    The descriptor is not valid.

     EINVAL	    fd refers to a socket, not to a file.

     EPERM	    The effective user ID does not match the
		    owner of the file and the effective user ID
		    is not the super-user.

     EROFS	    The file resides on a read-only file system.

     EIO	    An I/O error occurred while reading from or
		    writing to the file system.

SEE ALSO
     chflags(1), init(8)

HISTORY
     The chflags and fchflags functions first appeared in 4.4BSD.


Printed 11/26/99	November 28, 1994			2


 
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