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fcntl(2): be more precise about third arg type

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Also use the term operation consistently, over the command.

Reviewed by:	emaste, jhb, markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D33277
This commit is contained in:
Konstantin Belousov 2021-12-06 22:14:25 +02:00
parent e3044071de
commit 97722455cc
1 changed files with 10 additions and 2 deletions
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12
lib/libc/sys/fcntl.2
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@ -53,7 +53,11 @@ Depending on the value of
.Fa cmd ,
.Fn fcntl
can take an additional third argument
.Fa "long arg" .
.Fa arg .
Unless otherwise noted below for a specific operation,
.Fa arg
has type
.Vt int .
.Bl -tag -width F_DUP2FD_CLOEXEC
.It Dv F_DUPFD
Return a new descriptor as follows:
@ -286,7 +290,7 @@ and
will fail and return
.Dv EINVAL .
.Pp
Several commands are available for doing advisory file locking;
Several operations are available for doing advisory file locking;
they all operate on the following structure:
.Bd -literal
struct flock {
@ -298,6 +302,10 @@ struct flock {
int l_sysid; /* remote system id or zero for local */
};
.Ed
These advisory file locking operations take a pointer to
.Vt struct flock
as the third argument
.Fa arg .
The commands available for advisory record locking are as follows:
.Bl -tag -width F_SETLKWX
.It Dv F_GETLK