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mdoc(7) police: tidy up OpenBSD fixes.

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This commit is contained in:
Ruslan Ermilov 2002-01-16 15:21:39 +00:00
parent 3e4f59ce06
commit 89ac4ecce1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=89428
1 changed files with 5 additions and 7 deletions
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12
lib/libc/gen/daemon.3
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@ -64,13 +64,11 @@ is non-zero,
will redirect standard input, standard output, and standard error to will redirect standard input, standard output, and standard error to
.Pa /dev/null . .Pa /dev/null .
.Sh RETURN VALUES .Sh RETURN VALUES
Upon success, .Rv -std daemon
.Fn daemon
returns 0; otherwise \-1 is returned.
.Sh ERRORS .Sh ERRORS
The function The
.Fn daemon .Fn daemon
may fail and set function may fail and set
.Va errno .Va errno
for any of the errors specified for the library functions for any of the errors specified for the library functions
.Xr fork 2 .Xr fork 2
@ -86,14 +84,14 @@ function first appeared in
.Bx 4.4 . .Bx 4.4 .
.Sh CAVEATS .Sh CAVEATS
Unless the Unless the
.Ar noclose .Fa noclose
argument is non-zero, argument is non-zero,
.Fn daemon .Fn daemon
will close the first three file descriptors and redirect them to will close the first three file descriptors and redirect them to
.Pa /dev/null . .Pa /dev/null .
Normally, these correspond to standard input, standard output, and Normally, these correspond to standard input, standard output, and
standard error. standard error.
However, if any of those file descriptors refer to something else they However, if any of those file descriptors refer to something else, they
will still be closed, resulting in incorrect behavior of the calling program. will still be closed, resulting in incorrect behavior of the calling program.
This can happen if any of standard input, standard output, or standard This can happen if any of standard input, standard output, or standard
error have been closed before the program was run. error have been closed before the program was run.