go to
> acl_clear_perms(3)
> acl_delete_perm(3)
> acl_get_perm(3)
> acl_get_permset(3)
> acl_set_permset(3)
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man page of acl_add_perm

acl_add_perm: add a permission to an ACL permission set


acl_add_perm - add a permission to an ACL permission set


Linux Access Control Lists library (libacl, -lacl).


#include <sys/types.h> #include <sys/acl.h> int acl_add_perm(acl_permset_t permset_d, acl_perm_t perm);


The acl_add_perm() function adds the permission contained in the argument perm to the permission set referred to by the argument permset_d. An attempt to add a permission that is already contained in the permission set is not considered an error. Any existing descriptors that refer to permset_d continue to refer to that permission set.
The 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.
If any of the following conditions occur, the acl_add_perm() function returns -1 and sets errno to the corresponding value: [EINVAL] The argument permset_d is not a valid descriptor for a permission set within an ACL entry. The argument perm does not contain a valid acl_perm_t value.


IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned)


acl_clear_perms(3), acl_delete_perm(3), acl_get_perm(3), acl_get_permset(3), acl_set_permset(3), acl(5)


Derived from the FreeBSD manual pages written by Robert N M Watson <rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher <a.gruenbacher@bestbits.at>. ACL_ADD_PERM(3)

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