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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
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ACL_GET_FD(3) Library Functions Manual ACL_GET_FD(3)
acl_get_fd — get an ACL by file descriptor
Linux Access Control Lists library (libacl, -lacl).
<sys/types.h> <sys/acl.h> acl_t acl_get_fd(int fd)
The acl_get_fd() function retrieves the access ACL associated
with the file referred to by fd. The ACL is placed into working
storage and acl_get_fd() 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.
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_fd() as an argument.
On success, this function shall return a pointer to the working
storage. On error, a value of (acl_t)NULL shall be returned, and
errno is set appropriately.
If any of the following conditions occur, the acl_get_fd()
function returns a value of (acl_t)NULL and sets errno to the
corresponding value:
[EBADF] The fd argument is not a valid file
descriptor.
[ENOMEM] The ACL working storage requires more memory
than is allowed by the hardware or system-
imposed memory management constraints.
[ENOTSUP] The file system on which the file identified
by fd is located does not support ACLs, or
ACLs are disabled.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
acl_free(3), acl_get_entry(3), acl_get_file(3), acl_set_fd(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 <andreas.gruenbacher@gmail.com>.
This page is part of the acl (manipulating access control lists)
project. Information about the project can be found at
http://savannah.nongnu.org/projects/acl. If you have a bug
report for this manual page, see
⟨http://savannah.nongnu.org/bugs/?group=acl⟩. This page was
obtained from the project's upstream Git repository
⟨git://git.savannah.nongnu.org/acl.git⟩ on 2023-12-22. (At that
time, the date of the most recent commit that was found in the
repository was 2023-12-01.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Linux ACL March 23, 2002 ACL_GET_FD(3)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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