ACL_SET_FD(3) BSD Library Functions Manual ACL_SET_FD(3)NAME
acl_set_fd -- set an ACL by file descriptor
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
#include <sys/types.h>
#include <sys/acl.h>
int
acl_set_fd(int fd, acl_t acl);
DESCRIPTION
The acl_set_fd() function associates an access ACL with the file referred to by fd.
The effective user ID of the process must match the owner of the file or the process must have the CAP_FOWNER capability for the request to
succeed.
RETURN VALUE
The acl_set_fd() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi-
cate the error.
ERRORS
If any of the following conditions occur, the acl_set_fd() function returns the value -1 and and sets errno to the corresponding value:
[EBADF] The fd argument is not a valid file descriptor.
[EINVAL] The argument acl does not point to a valid ACL.
The ACL has more entries than the file referred to by fd can obtain.
[ENOSPC] The directory or file system that would contain the new ACL cannot be extended or the file system is out of file alloca-
tion resources.
[ENOTSUP] The file identified by fd cannot be associated with the ACL because the file system on which the file is located does not
support this.
[EPERM] The process does not have appropriate privilege to perform the operation to set the ACL.
[EROFS] This function requires modification of a file system which is currently read-only.
STANDARDS
IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned)
SEE ALSO acl_delete_def_file(3), acl_get_file(3), acl_set_file(3), acl_valid(3), acl(5)AUTHOR
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>.
Linux ACL March 23, 2002 Linux ACL
Check Out this Related Man Page
ACL_GET_ENTRY(3) BSD Library Functions Manual ACL_GET_ENTRY(3)NAME
acl_get_entry -- get an ACL entry
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
#include <sys/types.h>
#include <sys/acl.h>
int
acl_get_entry(acl_t acl, int entry_id, acl_entry_t *entry_p);
DESCRIPTION
The acl_get_entry() function obtains a descriptor for an ACL entry as specified by entry_id within the ACL indicated by the argument acl. If
the value of entry_id is ACL_FIRST_ENTRY, then the function returns in entry_p a descriptor for the first ACL entry within acl. If the value
of entry_id is ACL_NEXT_ENTRY, then the function returns in entry_p a descriptor for the next ACL entry within acl.
If a call is made to acl_get_entry() with entry_id set to ACL_NEXT_ENTRY when there has not been either an initial successful call to
acl_get_entry(), or a previous successful call to acl_get_entry() following a call to acl_calc_mask(), acl_copy_int(), acl_create_entry(),
acl_delete_entry(), acl_dup(), acl_from_text(), acl_get_fd(), acl_get_file(), acl_set_fd(), acl_set_file(), or acl_valid(), then the effect
is unspecified.
Calls to acl_get_entry() do not modify any ACL entries. Subsequent operations using the returned ACL entry descriptor operate on the ACL
entry within the ACL in working storage. The order of all existing entries in the ACL remains unchanged. Any existing ACL entry descriptors
that refer to entries within the ACL continue to refer to those entries. Any existing ACL pointers that refer to the ACL referred to by acl
continue to refer to the ACL.
RETURN VALUE
If the function successfully obtains an ACL entry, the function returns a value of 1. If the ACL has no ACL entries, the function returns
the value 0. If the value of entry_id is ACL_NEXT_ENTRY and the last ACL entry in the ACL has already been returned by a previous call to
acl_get_entry(), the function returns the value 0 until a successful call with an entry_id of ACL_FIRST_ENTRY is made. Otherwise, the value
-1 is returned and errno is set to indicate the error.
ERRORS
If any of the following conditions occur, the acl_get_entry() function returns -1 and sets errno to the corresponding value:
[EINVAL] The argument acl_p is not a valid pointer to an ACL.
The argument entry_id is neither ACL_NEXT_ENTRY nor ACL_FIRST_ENTRY.
STANDARDS
IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned)
SEE ALSO acl_calc_mask(3), acl_create_entry(3), acl_copy_entry(3), acl_delete_entry(3), acl_get_file(3), acl(5)AUTHOR
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>.
Linux ACL March 23, 2002 Linux ACL