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pidfile(3) uses flopen(3) - don't make any assumptions about how the

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latter is implemented.
This commit is contained in:
Dag-Erling Smørgrav 2008-10-20 18:00:11 +00:00
parent 51e75198fa
commit cb7cd07a07
1 changed files with 8 additions and 9 deletions
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17
lib/libutil/pidfile.3
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@ -24,7 +24,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd August 22, 2005 .Dd October 20, 2008
.Dt PIDFILE 3 .Dt PIDFILE 3
.Os .Os
.Sh NAME .Sh NAME
@ -51,16 +51,14 @@ The
.Nm pidfile .Nm pidfile
family of functions allows daemons to handle PID files. family of functions allows daemons to handle PID files.
It uses It uses
.Xr flock 2 .Xr flopen 3
to lock a pidfile and detect already running daemons. to lock a pidfile and detect already running daemons.
.Pp .Pp
The The
.Fn pidfile_open .Fn pidfile_open
function opens (or creates) a file specified by the function opens (or creates) a file specified by the
.Fa path .Fa path
argument and locks it with the argument and locks it.
.Xr flock 2
system call.
If a file can not be locked, a PID of an already running daemon is returned in If a file can not be locked, a PID of an already running daemon is returned in
the the
.Fa pidptr .Fa pidptr
@ -233,16 +231,17 @@ function may also fail and set
.Va errno .Va errno
for any errors specified for the for any errors specified for the
.Xr close 2 , .Xr close 2 ,
.Xr flock 2 ,
.Xr fstat 2 , .Xr fstat 2 ,
.Xr write 2 , .Xr write 2 ,
and and
.Xr unlink 2 .Xr unlink 2
calls. system calls and the
.Xr flopen 3
library function.
.Sh SEE ALSO .Sh SEE ALSO
.Xr flock 2 ,
.Xr open 2 , .Xr open 2 ,
.Xr daemon 3 .Xr daemon 3 ,
.Xr flopen 3
.Sh AUTHORS .Sh AUTHORS
.An -nosplit .An -nosplit
The The