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process_madvise.2: Use syscall(SYS_...); for system calls without a wrapper. Fix includes too. 

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-05-10 19:55:44 +02:00 committed by Michael Kerrisk
parent e393b243c0
commit 4e8ac36900
1 changed files with 12 additions and 8 deletions
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20
man2/process_madvise.2
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@ -30,15 +30,22 @@
process_madvise \- give advice about use of memory to a process
.SH SYNOPSIS
.nf
.B #include <sys/uio.h>
.BR "#include <sys/mman.h>" " /* Definition of " MADV_* " constants */"
.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
.BR "#include <sys/uio.h>" " /* Definition of " "struct iovec" " type */"
.B #include <unistd.h>
.PP
.BI "ssize_t process_madvise(int " pidfd ", const struct iovec *" iovec ,
.BI " size_t " vlen ", int " advice ,
.BI " unsigned int " flags ");"
.BI "ssize_t syscall(SYS_process_madvise, int " pidfd ,
.BI " const struct iovec *" iovec ", size_t " vlen \
", int " advice ,
.BI " unsigned int " flags ");"
.fi
.PP
.IR Note :
There is no glibc wrapper for this system call; see NOTES.
glibc provides no wrapper for
.BR process_madvise (),
necessitating the use of
.BR syscall (2).
.\" FIXME: See <https://sourceware.org/bugzilla/show_bug.cgi?id=27380>
.SH DESCRIPTION
The
@ -205,9 +212,6 @@ configuration option.
The
.BR process_madvise ()
system call is Linux-specific.
.SH NOTES
Glibc does not provide a wrapper for this system call; call it using
.BR syscall (2).
.SH SEE ALSO
.BR madvise (2),
.BR pidfd_open (2),