General introduction:
  http://www.suse.de/~agruen/acl/linux-acls/online/


POSIX ACLs

Documents from POSIX.1e (headers & functions) and POSIX.2c (utilities):
  http://wt.tuxomania.net/publications/posix.1e/download.html

Explanation of mask:
  https://unix.stackexchange.com/questions/475698/


Linux ACLs

Introduction:
  http://www.suse.de/~agruen/acl/linux-acls/online/
Hands-on tutorial:
  http://www.vanemery.com/Linux/ACL/linux-acl.html

Manual pages:
  https://www.kernel.org/doc/man-pages/
Includes:
  <sys/acl.h>
  <acl/libacl.h>
Library:
  -lacl
Functions:
  acl_add_perm
  acl_calc_mask
  acl_check
  acl_clear_perms
  acl_cmp
  acl_copy_entry
  acl_copy_ext
  acl_copy_int
  acl_create_entry
  acl_delete_def_file
  acl_delete_entry
  acl_delete_perm
  acl_dup
  acl_entries
  acl_equiv_mode
  acl_error
  acl_extended_fd
  acl_extended_file
  acl_free
  acl_from_mode
  acl_from_text
  acl_get_entry
  acl_get_fd
  acl_get_file
  acl_get_perm
  acl_get_permset
  acl_get_qualifier
  acl_get_tag_type
  acl_init
  acl_set_fd
  acl_set_file
  acl_set_permset
  acl_set_qualifier
  acl_set_tag_type
  acl_size
  acl_to_any_text
  acl_to_text
  acl_valid
Utilities:
  getfacl
  setfacl


Solaris ACLs

Introductions:
  http://www.softpanorama.org/Solaris/ACL/index.shtml
  https://www.cs.duke.edu/csl/faqs/solaris-acls.php
Manual pages:
  https://docs.oracle.com/cd/E23823_01/html/816-5167/acl-2.html
  https://docs.oracle.com/cd/E23823_01/html/816-5165/getfacl-1.html
  https://docs.oracle.com/cd/E23823_01/html/816-5165/setfacl-1.html
  https://docs.oracle.com/cd/E23823_01/html/816-5167/pathconf-2.html
Includes:
  <sys/acl.h>
Library:
  -lsec
Functions:
  acl
  facl
Functions in libsec:
  aclcheck
  aclfrommode
  aclfromtext
  aclsort
  acltomode
  acltotext
Additionally in Solaris 10 patch 118833-17 (<sys/acl.h> version 1.15):
  acl_t type
  ACL_NO_TRIVIAL macro
  ACE_OTHER macro replaced with ACE_EVERYONE macro
  ACE_OWNER, ACE_GROUP changed their values(!)
  ALLOW, DENY macros removed(!)
  acl_check
  acl_free
  acl_fromtext
  acl_get
  acl_set
  acl_strip
  acl_totext
  acl_trivial
  facl_get
  facl_set
Utilities:
  getfacl
  setfacl
  chmod


FreeBSD ACLs

Introduction:
  https://www.freebsd.org/doc/en/books/handbook/fs-acl.html
  http://www.onlamp.com/pub/a/bsd/2005/09/22/FreeBSD_Basics.html
Manual pages:
  https://www.freebsd.org/cgi/man.cgi
  https://www.freebsd.org/cgi/man.cgi?query=acl&apropos=0&sektion=0&manpath=FreeBSD+7.0-RELEASE&format=html
Includes:
  <sys/acl.h>
Library:
  none needed
Functions:
  acl_add_perm
  acl_calc_mask
  acl_clear_perms
  acl_copy_entry
  acl_copy_ext
  acl_copy_int
  acl_create_entry
  acl_delete_entry
  acl_delete_fd_np
  acl_delete_file_np
  acl_delete_link_np
  acl_delete_def_file
  acl_delete_def_link_np
  acl_delete_perm
  acl_dup
  acl_free
  acl_from_text
  acl_get
  acl_get_entry
  acl_get_fd
  acl_get_fd_np
  acl_get_file
  acl_get_link_np
  acl_get_perm_np
  acl_get_permset
  acl_get_qualifier
  acl_get_tag_type
  acl_init
  acl_set
  acl_set_fd
  acl_set_fd_np
  acl_set_file
  acl_set_link_np
  acl_set_permset
  acl_set_qualifier
  acl_set_tag_type
  acl_size
  acl_to_text
  acl_valid
  acl_valid_fd_np
  acl_valid_file_np
  acl_valid_link_np
Utilities:
  getfacl
  setfacl


NetBSD ACLs

Manual pages:
  https://man.netbsd.org/
Includes:
  <sys/acl.h>
Library:
  none needed
Functions:
  acl_add_perm
  acl_calc_mask
  acl_clear_perms
  acl_copy_entry
  acl_copy_ext
  acl_copy_int
  acl_create_entry
  acl_delete_entry
  acl_delete_fd_np
  acl_delete_file_np
  acl_delete_link_np
  acl_delete_def_file
  acl_delete_def_link_np
  acl_delete_perm
  acl_dup
  acl_free
  acl_from_text
  acl_get
  acl_get_entry
  acl_get_fd
  acl_get_fd_np
  acl_get_file
  acl_get_link_np
  acl_get_perm_np
  acl_get_permset
  acl_get_qualifier
  acl_get_tag_type
  acl_init
  acl_set
  acl_set_fd
  acl_set_fd_np
  acl_set_file
  acl_set_link_np
  acl_set_permset
  acl_set_qualifier
  acl_set_tag_type
  acl_size
  acl_to_text
  acl_valid
  acl_valid_fd_np
  acl_valid_file_np
  acl_valid_link_np
Utilities:
  getfacl
  setfacl


OpenBSD ACLs

Not available.


Mac OS X ACLs

Manual pages:
  https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/acl.3.html
Includes:
  <sys/acl.h>
Library:
  none needed
Functions:
  acl_add_flag_np
  acl_add_perm
  acl_calc_mask
  acl_clear_flags_np
  acl_clear_perms
  acl_copy_entry
  acl_copy_ext
  acl_copy_ext_native
  acl_copy_int
  acl_copy_int_native
  acl_create_entry
  acl_create_entry_np
  acl_delete_def_file
  acl_delete_fd_np (undeclared?)
  acl_delete_file_np (undeclared?)
  acl_delete_flag_np
  acl_delete_link_np (undeclared?)
  acl_delete_entry
  acl_delete_perm
  acl_dup
  acl_free
  acl_from_text
  acl_get_entry
  acl_get_fd
  acl_get_fd_np
  acl_get_file
  acl_get_flag_np
  acl_get_flagset_np
  acl_get_link_np
  acl_get_perm_np
  acl_get_permset
  acl_get_qualifier
  acl_get_tag_type
  acl_init
  acl_set_fd
  acl_set_fd_np
  acl_set_file
  acl_set_flagset_np
  acl_set_link_np
  acl_set_permset
  acl_set_qualifier
  acl_set_tag_type
  acl_size
  acl_to_text
  acl_valid
  acl_valid_fd_np
  acl_valid_file_np
  acl_valid_link_np
Utilities:
  chmod


HP-UX 11.00 ACLs

Present in HP-UX >= 11.00. On some machines, yields ENOSYS always.
Manual pages:
  getacl, fgetacl: https://nixdoc.net/man-pages/hp-ux/man2/getacl.2.html
  setacl, fsetacl: https://nixdoc.net/man-pages/hp-ux/man2/setacl.2.html
  lsacl: https://nixdoc.net/man-pages/hp-ux/man1/lsacl.1.html
  chacl: https://nixdoc.net/man-pages/hp-ux/man1/chacl.1.html
Includes:
  <acl.h> or <sys/acl.h>
Library:
  none needed
Functions:
  getacl
  fgetacl
  fsetacl
  setacl
Utilities:
  lsacl
  chacl
  chmod


HP-UX 11.11 ACLs

Present in HP-UX >= 11.11.
Manual pages:
  acl: https://nixdoc.net/man-pages/hp-ux/man2/acl.2.html
  aclsort: https://docstore.mik.ua/manuals/hp-ux/en/B2355-60130/aclsort.3C.html?
  getacl: https://nixdoc.net/man-pages/hp-ux/man1/getacl.1.html
  setacl: https://nixdoc.net/man-pages/hp-ux/man1/setacl.1.html
Includes:
  <aclv.h>
Library:
  none needed
Functions:
  acl
  aclsort
Utilities:
  getacl
  setacl


AIX ACLs

Documentation:
  https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.security/access_control_list.htm
Introduction:
  http://www1.uni-hamburg.de/RRZ/Software/AIX/ACL.htm
Includes:
  <acl.h> or <sys/acl.h>
  <sys/access.h>
Library:
  none needed
Functions:
  acl_chg
  acl_fchg
  acl_fget
  acl_fput
  acl_fset
  acl_get
  acl_put
  acl_set
  chacl
  fchacl
  fstatacl
  statacl
Function in AIX 5.3:
  aclx_convert
  aclx_fget
  aclx_fput
  aclx_get
  aclx_gettypeinfo
  aclx_gettypes
  aclx_print
  aclx_printStr
  aclx_put
  aclx_scan
  aclx_scanStr
Utilities:
  aclget
  aclput
  acledit


NonStop Kernel ACLs

Documentation:
  http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02492445/c02492445.pdf p. 249..260
  http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02128649/c02128649.pdf
  http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02128680/c02128680.pdf
Includes:
  <sys/acl.h>
Library:
  none needed
Functions:
  acl
  aclsort
Utilities:
  getacl
  setacl


Cygwin ACLs

Documentation:
  https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-aclfuncs
  acl-cygwin.txt
Includes:
  <sys/acl.h>
Library:
  none needed
Functions:
  acl
  aclcheck
  aclfrommode
  aclfrompbits
  aclfromtext
  aclsort
  acltomode
  acltopbits
  acltotext
  facl
  lacl
Functions in Cygwin >= 2.5:
  acl_add_perm
  acl_calc_mask
  acl_clear_perms
  acl_copy_entry
  acl_copy_ext
  acl_copy_int
  acl_create_entry
  acl_delete_def_file
  acl_delete_entry
  acl_delete_perm
  acl_dup
  acl_free
  acl_from_text
  acl_get_entry
  acl_get_fd
  acl_get_file
  acl_get_permset
  acl_get_qualifier
  acl_get_tag_type
  acl_init
  acl_set_fd
  acl_set_file
  acl_set_permset
  acl_set_qualifier
  acl_set_tag_type
  acl_size
  acl_to_text
  acl_valid
Utilities:
  getfacl
  setfacl


Native Windows ACLs

Introduction:
  https://helgeklein.com/blog/2009/03/permissions-a-primer-or-dacl-sacl-owner-sid-and-ace-explained/
Manual pages:
  https://docs.microsoft.com/en-us/windows/desktop/SecAuthZ/access-control-lists
  https://docs.microsoft.com/en-us/windows/desktop/SecAuthZ/getting-information-from-an-acl
  https://docs.microsoft.com/en-us/windows/desktop/api/winnt/ns-winnt-_acl
  https://en.wikipedia.org/wiki/Cacls
Library:
  ?
Functions:
  GetAclInformation
  SetAclInformation
  ...
Utilities:
  cacls


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