ACL_ADD_PERM(3) | Library Functions Manual | ACL_ADD_PERM(3) |
acl_add_perm
—
#include <sys/types.h>
#include <sys/acl.h>
int
acl_add_perm
(acl_permset_t
permset_d, acl_perm_t
perm);
acl_add_perm
() function is a POSIX.1e call that adds
the permission contained in perm to the permission set
permset_d.
Note: it is not considered an error to attempt to add permissions that already exist in the permission set.
For POSIX.1e ACLs, valid values are:
ACL_EXECUTE | Execute permission |
ACL_WRITE | Write permission |
ACL_READ | Read permission |
For NFSv4 ACLs, valid values are:
ACL_READ_DATA | Read permission |
ACL_LIST_DIRECTORY | Same as ACL_READ_DATA |
ACL_WRITE_DATA | Write permission, or permission to create files |
ACL_ADD_FILE | Same as ACL_READ_DATA |
ACL_APPEND_DATA | Permission to create directories. Ignored for files |
ACL_ADD_SUBDIRECTORY | Same as ACL_APPEND_DATA |
ACL_READ_NAMED_ATTRS | Ignored |
ACL_WRITE_NAMED_ATTRS | Ignored |
ACL_EXECUTE | Execute permission |
ACL_DELETE_CHILD | Permission to delete files and subdirectories |
ACL_READ_ATTRIBUTES | Permission to read basic attributes |
ACL_WRITE_ATTRIBUTES | Permission to change basic attributes |
ACL_DELETE | Permission to delete the object this ACL is placed on |
ACL_READ_ACL | Permission to read ACL |
ACL_WRITE_ACL | Permission to change the ACL and file mode |
ACL_SYNCHRONIZE | Ignored |
Calling acl_add_perm
() with
perm equal to ACL_WRITE or ACL_READ brands the ACL as
POSIX. Calling it with ACL_READ_DATA, ACL_LIST_DIRECTORY, ACL_WRITE_DATA,
ACL_ADD_FILE, ACL_APPEND_DATA, ACL_ADD_SUBDIRECTORY, ACL_READ_NAMED_ATTRS,
ACL_WRITE_NAMED_ATTRS, ACL_DELETE_CHILD, ACL_READ_ATTRIBUTES,
ACL_WRITE_ATTRIBUTES, ACL_DELETE, ACL_READ_ACL, ACL_WRITE_ACL or
ACL_SYNCHRONIZE brands the ACL as NFSv4.
acl_add_perm
() function returns the value 0
if successful; otherwise the value -1 is returned and the global
variable errno is set to indicate the error.
acl_add_perm
() function fails if:
EINVAL
]acl_add_perm
() function was added in
FreeBSD 5.0.
acl_add_perm
() function was written by
Chris D. Faulhaber
<jedgar@fxp.org>.
June 25, 2009 | NetBSD 10.0 |