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acl_set(3)               BSD Library Functions Manual               acl_set(3)


NAME

     acl_set_fd, acl_set_fd_np, acl_set_file, acl_set_link_np -- set an ACL
     for a file


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <sys/types.h>
     #include <sys/acl.h>

     int
     acl_set_fd(int fd, acl_t acl);

     int
     acl_set_fd_np(int fd, acl_t acl, acl_type_t type);

     int
     acl_set_file(const char *path_p, acl_type_t type, acl_t acl);

     int
     acl_set_link_np(const char *path_p, acl_type_t type, acl_t acl);


DESCRIPTION

     The acl_set_fd(), acl_set_fd_np(), acl_set_file(), and acl_set_link_np()
     each associate an ACL with an object referred to by fd or path_p.  The
     acl_set_fd_np() and acl_set_link_np() functions are not POSIX.1e calls.
     The acl_set_fd() function allows only the setting of ACLs of type
     ACL_TYPE_EXTENDED where as acl_set_fd_np() allows the setting of ACLs of
     any type.

     The acl_set_link_np() function acts on a symlink rather than its target,
     if the target of the path is a symlink.  In the case of a symlink, this
     function will return an error because ACLs are not currently supported on
     symlinks.  Note that the implementation is not atomic, and so the target
     could change between the time it is checked as not being a symlink, and
     the time the ACL is set.


RETURN VALUES

     Upon successful completion, the value 0 is returned; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.


ERRORS

     If any of the following conditions occur, these functions shall return -1
     and set errno to the corresponding value:

     [EACCES]           Search permission is denied for a component of the
                        path prefix, or the object exists and the process does
                        not have appropriate access rights.

     [EBADF]            The fd argument is not a valid file descriptor.

     [EINVAL]           Argument acl does not point to a valid ACL for this
                        object, or the ACL type specified in type is invalid
                        for this object, or both.

     [ENAMETOOLONG]     A component of a pathname exceeded 255 characters, or
                        an entire path name exceeded 1023 characters.

     [ENOENT]           The named object does not exist, or the path_p argu-
                        ment points to an empty string.

     [ENOMEM]           Insufficient memory available to fulfill request.

     [ENOSPC]           The directory or file system that would contain the
                        new ACL cannot be extended, or the file system is out
                        of file allocation resources.

     [EOPNOTSUPP]       The file system does not support ACL retrieval.

     [EROFS]            This function requires modification of a file system
                        which is currently read-only.


SEE ALSO

     acl(3), acl_delete(3), acl_get(3), acl_valid(3), posix1e(3)


STANDARDS

     POSIX.1e is described in IEEE POSIX.1e draft 17.


AUTHORS

     Michael Smith
     Robert N M Watson

BSD                            December 29, 2002                           BSD

Mac OS X 10.8 - Generated Sun Aug 26 10:40:13 CDT 2012
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