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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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PR_CAPBSET_READ(2const) PR_CAPBSET_READ(2const)
PR_CAPBSET_READ - read the calling thread's capability bounding
set
Standard C library (libc, -lc)
#include <linux/prctl.h> /* Definition of PR_* constants */
#include <sys/prctl.h>
int prctl(PR_CAPBSET_READ, long cap);
Return 1 if the capability specified in cap is in the calling
thread's capability bounding set, or 0 if it is not.
The capability constants are defined in <linux/capability.h>.
The capability bounding set dictates whether the process can
receive the capability through a file's permitted capability set
on a subsequent call to execve(2).
On success, this call returns the boolean value described above.
On error, -1 is returned, and errno is set to indicate the error.
EINVAL cap does not specify a valid capability.
A higher-level interface layered on top of this operation is
provided in the libcap(3) library in the form of
cap_get_bound(3).
Linux.
Linux 2.6.25.
prctl(2), PR_CAPBSET_DROP(2const), libcap(3), cap_get_bound(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. 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
[email protected]
Linux man-pages 6.9.1 2024-06-02 PR_CAPBSET_READ(2const)
Pages that refer to this page: PR_CAPBSET_DROP(2const), prctl(2)
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HTML rendering created 2024-06-26 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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