04-26-2007
Read
this. Explains file permissions in a lot of detail.
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LEARN ABOUT OSF1
acl_add_perm
acl_add_perm(3) Library Functions Manual acl_add_perm(3)
NAME
acl_add_perm - Adds a permission to a set of permissions belonging to an ACL entry
LIBRARY
Security Library (libpacl.a)
SYNOPSIS
#include <sys/acl.h>
int acl_add_perm( acl_permset_t permset_d, acl_perm_t perm_d);
PARAMETERS
Specifies the permissions set of the working storage internal representation of an ACL entry. Specifies the permission to be added to the
permission set (a combination of ACL_EXECUTE, ACL_WRITE, and ACL_READ).
DESCRIPTION
NOTE: This function is based on Draft 13 of the POSIX P1003.6 standard.
The acl_add_perm() function adds the permission specified by perm_d to the permission set referred to by the permset_d parameter. Any per-
missions not designated in the perm_d parameter are left unchanged in the ACL entry. An attempt to add a permission already in the permis-
sion set is not treated as an error.
RETURN VALUES
Upon successful completion, the acl_add_perm() function returns a value of 0 (zero). Otherwise a value of -1 is returned, and errno is
set.
ERRORS
If any of the following conditions occur, the acl_add_perm() function sets errno to the corresponding value: The perm_d parameter does not
contain a valid acl_perm_t value
The permset_d parameter does not contain valid file permission bits.
RELATED INFORMATION
acl_clear_perm(3),acl_delete_perm(3), acl_get_permset(3), acl_set_permset(3),acl_get_entry(3)
Security delim off
acl_add_perm(3)