acl_get_file man page on Archlinux

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ACL_GET_FILE(3)		 BSD Library Functions Manual	       ACL_GET_FILE(3)

     acl_get_file — get an ACL by filename

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

     #include <sys/types.h>
     #include <sys/acl.h>

     acl_get_file(const char *path_p, acl_type_t type);

     The acl_get_file() function retrieves the access ACL associated with a
     file or directory, or the default ACL associated with a directory. The
     pathname for the file or directory is pointed to by the argument path_p.
     The ACL is placed into working storage and acl_get_file() returns a
     pointer to that storage.

     In order to read an ACL from an object, a process must have read access
     to the object's attributes.

     The value of the argument type is used to indicate whether the access ACL
     or the default ACL associated with path_p is returned. If type is
     ACL_TYPE_ACCESS, the access ACL of path_p is returned. If type is
     ACL_TYPE_DEFAULT, the default ACL of path_p is returned. If type is
     ACL_TYPE_DEFAULT and no default ACL is associated with the directory
     path_p, then an ACL containing zero ACL entries is returned. If type
     specifies a type of ACL that cannot be associated with path_p, then the
     function fails.

     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 returned by acl_get_file() as an argu‐

     On success, this function returns a pointer to the working storage.  On
     error, a value of (acl_t)NULL is returned, and errno is set appropri‐

     If any of the following conditions occur, the acl_get_file() function
     returns a value of (acl_t)NULL and sets errno to the corresponding value:

     [EACCES]		Search permission is denied for a component of the
			path prefix or the object exists and the process does
			not have appropriate access rights.

			Argument type specifies a type of ACL that cannot be
			associated with path_p.

     [EINVAL]		The argument type is not ACL_TYPE_ACCESS or

     [ENAMETOOLONG]	The length of the argument path_p is too long.

     [ENOENT]		The named object does not exist or the argument path_p
			points to an empty string.

     [ENOMEM]		The ACL working storage requires more memory than is
			allowed by the hardware or system-imposed memory man‐
			agement constraints.

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENOTSUP]		The file system on which the file identified by path_p
			is located does not support ACLs, or ACLs are dis‐

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

     acl_free(3), acl_get_entry(3), acl_get_fd(3), acl_set_file(3), acl(5)

     Derived from the FreeBSD manual pages written by Robert N M Watson
     ⟨⟩, and adapted for Linux by Andreas Gruenbacher

Linux ACL			March 23, 2002			     Linux ACL

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