FreeBSD 4.7 manual page repository

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acl_init - initialize ACL working storage



      acl_init - initialize ACL working storage


      library “libposix1e”


      #include <sys/types.h>
      #include <sys/acl.h>
      acl_init(int count);


      The acl_init() function allocates and initializes the working storage for
      an ACL of at least count ACL entries.  A pointer to the working storage
      is returned.  The working storage allocated to contain the ACL is freed
      by a call to acl_free(3).  When the area is first allocated, it shall
      contain an ACL that contains no ACL entries.
      This function may cause memory to be allocated.  The caller should free
      any releasable memory, when the new ACL is no longer required, by calling
      acl_free(3) with the (void*)acl_t as an argument.
      FreeBSD’s support for POSIX.1e interfaces and features is still under
      development at this time.
      Upon successful completion, this function shall return a pointer to the
      working storage.  Otherwise, a value of (acl_t)NULL shall be returned,
      and errno shall be set to indicate the error.


      If any of the following conditions occur, the acl_init() function shall
      return a value of (acl_t)NULL and set errno to the corresponding value:
      [EINVAL]           The value of count is less than zero.
      [ENOMEM]           The acl_t to be returned requires more memory than is
                         allowed by the hardware or system-imposed memory man‐
                         agement constraints.
      acl(3), acl_free(3), posix1e(3)


      POSIX.1e is described in IEEE POSIX.1e draft 17.  Discussion of the draft
      continues on the cross-platform POSIX.1e implementation mailing list.  To
      join this list, see the FreeBSD POSIX.1e implementation page for more


      POSIX.1e support was introduced in FreeBSD 4.0, and development contin‐


      Robert N M Watson


      These features are not yet fully implemented.  In particular, the shipped
      version of UFS/FFS does not support storage of additional security
      labels, and so is unable to (easily) provide support for most of these


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.