Differential D31133 Diff 92049 lib/libc/sys/pdfork.2

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lib/libc/sys/pdfork.2

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	.Nm pdkill			.Nm pdkill
	.Nd System calls to manage process descriptors			.Nd System calls to manage process descriptors
	.Sh LIBRARY			.Sh LIBRARY
	.Lb libc			.Lb libc
	.Sh SYNOPSIS			.Sh SYNOPSIS
	.In sys/procdesc.h			.In sys/procdesc.h
	.Ft pid_t			.Ft pid_t
	.Fn pdfork "int *fdp" "int flags"			.Fn pdfork "int *fdp" "int flags"
				.Ft pid_t
				.Fn pdvfork "int *fdp" "int flags"
	.Ft int			.Ft int
	.Fn pdgetpid "int fd" "pid_t *pidp"			.Fn pdgetpid "int fd" "pid_t *pidp"
	.Ft int			.Ft int
	.Fn pdkill "int fd" "int signum"			.Fn pdkill "int fd" "int signum"
	.Sh DESCRIPTION			.Sh DESCRIPTION
	Process descriptors are special file descriptors that represent processes,			Process descriptors are special file descriptors that represent processes,
	and are created using			and are created using
	.Fn pdfork ,			.Fn pdfork ,
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	.Xr capsicum 4			.Xr capsicum 4
	capability mode (see			capability mode (see
	.Xr cap_enter 2 ) .			.Xr cap_enter 2 ) .
	.El			.El
	.Bl -tag -width ".Dv PD_DAEMON"			.Bl -tag -width ".Dv PD_DAEMON"
	.It Dv PD_CLOEXEC			.It Dv PD_CLOEXEC
	Set close-on-exec on process descriptor.			Set close-on-exec on process descriptor.
	.El			.El
				.Pp
				.Fn pdvfork
				accepts the same parameters and produces the same return value as
				.Fn pdfork
				but behaves as
				.Xr vfork 2 ,
				rather than
				.Xr fork 2 .
	.Pp			.Pp
	.Fn pdgetpid			.Fn pdgetpid
	queries the process ID (PID) in the process descriptor			queries the process ID (PID) in the process descriptor
	.Fa fd .			.Fa fd .
	.Pp			.Pp
	.Fn pdkill			.Fn pdkill
	is functionally identical to			is functionally identical to
	.Xr kill 2 ,			.Xr kill 2 ,
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