bsd man page for chflags

CHFLAGS(2)							System Calls 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.  Otherwise, -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 directory.

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

       ENAMETOOLONG   A component of a pathname exceeded 63 characters, 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.

4th Berkeley Distribution					 November 28, 1994							CHFLAGS(2)