ACLTOMODE(3SEC) File Access Control Library Functions ACLTOMODE(3SEC)
acltomode, aclfrommode - convert an ACL to or from permission bits
cc [ flag... ] file... -lsec [ library... ]
#include <sys/types.h>
#include <sys/acl.h>
int acltomode(aclent_t *aclbufp, int nentries, mode_t *modep);
int aclfrommode(aclent_t *aclbufp, int nentries, mode_t *modep);
The acltomode() function converts an ACL pointed to by aclbufp into
the permission bits buffer pointed to by modep. If the USER_OBJ ACL
entry, GROUP_OBJ ACL entry, or the OTHER_OBJ ACL entry cannot be
found in the ACL buffer, then the function fails with errno set to
EINVAL.
The USER_OBJ ACL entry permission bits are copied to the file owner
class bits in the permission bits buffer. The OTHER_OBJ ACL entry
permission bits are copied to the file other class bits in the
permission bits buffer. If there is a CLASS_OBJ (ACL mask) entry, the
CLASS_OBJ ACL entry permission bits are copied to the file group
class bits in the permission bits buffer. Otherwise, the GROUP_OBJ
ACL entry permission bits are copied to the file group class bits in
the permission bits buffer.
The aclfrommode() function converts the permission bits pointed to by
modep into an ACL pointed to by aclbufp. If the USER_OBJ ACL entry,
GROUP_OBJ ACL entry, or the OTHER_OBJ ACL entry cannot be found in
the ACL buffer, the function fails with errno set to EINVAL.
The file owner class bits from the permission bits buffer are copied
to the USER_OBJ ACL entry. The file other class bits from the
permission bits buffer are copied to the OTHER_OBJ ACL entry. If
there is a CLASS_OBJ (ACL mask) entry, the file group class bits from
the permission bits buffer are copied to the CLASS_OBJ ACL entry, and
the GROUP_OBJ ACL entry is not modified. Otherwise, the file group
class bits from the permission bits buffer are copied to the
GROUP_OBJ ACL entry.
The nentries argument represents the number of ACL entries in the
buffer pointed to by aclbufp.
Upon successful completion, the function returns 0. Otherwise, it
returns -1 and sets errno to indicate the error.
See attributes(7) for descriptions of the following attributes:
+---------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------------+-----------------+
|Interface Stability | Evolving |
+---------------------+-----------------+
|MT-Level | Unsafe |
+---------------------+-----------------+
acl(2), attributes(7)
December 10, 2001 ACLTOMODE(3SEC)
NAME
acltomode, aclfrommode - convert an ACL to or from permission bits
SYNOPSIS
cc [ flag... ] file... -lsec [ library... ]
#include <sys/types.h>
#include <sys/acl.h>
int acltomode(aclent_t *aclbufp, int nentries, mode_t *modep);
int aclfrommode(aclent_t *aclbufp, int nentries, mode_t *modep);
DESCRIPTION
The acltomode() function converts an ACL pointed to by aclbufp into
the permission bits buffer pointed to by modep. If the USER_OBJ ACL
entry, GROUP_OBJ ACL entry, or the OTHER_OBJ ACL entry cannot be
found in the ACL buffer, then the function fails with errno set to
EINVAL.
The USER_OBJ ACL entry permission bits are copied to the file owner
class bits in the permission bits buffer. The OTHER_OBJ ACL entry
permission bits are copied to the file other class bits in the
permission bits buffer. If there is a CLASS_OBJ (ACL mask) entry, the
CLASS_OBJ ACL entry permission bits are copied to the file group
class bits in the permission bits buffer. Otherwise, the GROUP_OBJ
ACL entry permission bits are copied to the file group class bits in
the permission bits buffer.
The aclfrommode() function converts the permission bits pointed to by
modep into an ACL pointed to by aclbufp. If the USER_OBJ ACL entry,
GROUP_OBJ ACL entry, or the OTHER_OBJ ACL entry cannot be found in
the ACL buffer, the function fails with errno set to EINVAL.
The file owner class bits from the permission bits buffer are copied
to the USER_OBJ ACL entry. The file other class bits from the
permission bits buffer are copied to the OTHER_OBJ ACL entry. If
there is a CLASS_OBJ (ACL mask) entry, the file group class bits from
the permission bits buffer are copied to the CLASS_OBJ ACL entry, and
the GROUP_OBJ ACL entry is not modified. Otherwise, the file group
class bits from the permission bits buffer are copied to the
GROUP_OBJ ACL entry.
The nentries argument represents the number of ACL entries in the
buffer pointed to by aclbufp.
RETURN VALUES
Upon successful completion, the function returns 0. Otherwise, it
returns -1 and sets errno to indicate the error.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------------+-----------------+
|Interface Stability | Evolving |
+---------------------+-----------------+
|MT-Level | Unsafe |
+---------------------+-----------------+
SEE ALSO
acl(2), attributes(7)
December 10, 2001 ACLTOMODE(3SEC)