unix.c File Reference

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/acl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <atalk/acl.h>
#include <atalk/afp.h>
#include <atalk/logger.h>
#include <atalk/unix.h>
#include <atalk/util.h>

Macros
#define	SEARCH_GROUP_OBJ   0x01
#define	SEARCH_MASK   0x02

Functions
int	get_nfsv4_acl (const char *name, ace_t **retAces)
	Get ACL.
ace_t *	concat_aces (ace_t *aces1, int ace1count, ace_t *aces2, int ace2count)
int	strip_trivial_aces (ace_t **saces, int sacecount)
	Remove any trivial ACE "in-place".
int	strip_nontrivial_aces (ace_t **saces, int sacecount)
	Remove non-trivial ACEs "in-place".
int	nfsv4_chmod (char *name, mode_t mode)
	Change mode of file preserving existing explicit ACEs.
int	posix_chmod (const char *name, mode_t mode)
	POSIX ACL chmod.
int	posix_fchmod (int fd, mode_t mode)
	POSIX ACL fchmod.

Macro Definition Documentation

SEARCH_GROUP_OBJ

#define SEARCH_GROUP_OBJ   0x01

SEARCH_MASK

#define SEARCH_MASK   0x02

Function Documentation

concat_aces()

ace_t * concat_aces	(	ace_t *	aces1,
		int	ace1count,
		ace_t *	aces2,
		int	ace2count )

Concatenate ACEs

get_nfsv4_acl()

int get_nfsv4_acl	(	const char *	name,
		ace_t **	retAces )

Get ACL.

Note

Allocates storage as needed. Caller must free.

Returns

no of ACEs or -1 on error.

nfsv4_chmod()

int nfsv4_chmod	(	char *	name,
		mode_t	mode )

Change mode of file preserving existing explicit ACEs.

nfsv4_chmod

1. reads objects ACL (acl1), may return 0 or -1 NFSv4 ACEs on e.g. UFS fs
2. removes all trivial ACEs from the ACL by calling strip_trivial_aces(), possibly leaving 0 ACEs in the ACL if there were only trivial ACEs as mapped from the mode
3. calls chmod() with mode, we're done if step (1) returned 0 for noaces
4. reads the changed ACL (acl2) which a. might still contain explicit ACEs (up to onnv132) b. will have any explicit ACE removed (starting with onnv145/Openindiana)
5. strip any explicit ACE from acl2 using strip_nontrivial_aces()
6. merge acl2 and acl2
7. set the ACL merged ACL on the object

posix_chmod()

int posix_chmod	(	const char *	name,
		mode_t	mode )

POSIX ACL chmod.

This is a workaround for chmod() on filestystems supporting Posix 1003.1e draft 17 compliant ACLs. For objects with extended ACLs, e.g. objects with an ACL_MASK entry, chmod() manipulates ACL_MASK instead of ACL_GROUP_OBJ. As OS X isn't aware of this behavior calling FPSetFileDirParms may lead to unpredictable results. For more information see section 23.1.2 of Posix 1003.1e draft 17.

Note

accepts the same arguments as chmod()

Returns

0 in case of success or -1 in case something went wrong.

posix_fchmod()

int posix_fchmod	(	int	fd,
		mode_t	mode )

POSIX ACL fchmod.

Note

accepts the same arguments as fchmod()

Returns

0 in case of success or -1 in case something went wrong.

strip_nontrivial_aces()

int strip_nontrivial_aces	(	ace_t **	saces,
		int	sacecount )

Remove non-trivial ACEs "in-place".

Returns

no of trivial ACEs.

strip_trivial_aces()

int strip_trivial_aces	(	ace_t **	saces,
		int	sacecount )

Remove any trivial ACE "in-place".

Returns

no of non-trivial ACEs