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keyctl.2: Add notes on libkeyutils wrapper functions 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2016-10-21 09:42:13 +02:00
parent 57ce8d0fe3
commit be428596d5
1 changed files with 11 additions and 7 deletions
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18
man2/keyctl.2
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@ -28,6 +28,8 @@ keyctl \- manipulate the kernel's key management facility
.BI " __kernel_ulong_t " arg3 ", __kernel_ulong_t " arg4 ,
.BI " __kernel_ulong_t " arg5 );
.fi
No glibc wrapper is provided for this system call; see NOTES.
.SH DESCRIPTION
.BR keyctl ()
allows user-space programs to perform key manipulation.
@ -1458,13 +1460,15 @@ This system call first appeared in Linux 2.6.11.
.SH CONFORMING TO
This system call is a nonstandard Linux extension.
.SH NOTES
Although this is a Linux system call, it is not present in
.I libc
but can be found rather in
.IR libkeyutils .
When linking,
.B \-lkeyutils
should be specified to the linker.
No wrapper for this system call is provided in glibc.
A wrapper is provided in the
.IR libkeyutils
package.
When employing the wrapper in that library, link with
.IR \-lkeyutils .
However, rather than using this system call directly,
you probably want to use the various library functions
mentioned in the descriptions of individual operations above.
.SH SEE ALSO
.ad l
.nh