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Document some process group stuff; mkdir mode arg optional; mkfifo.

This commit is contained in:
Guido van Rossum 1996-06-26 19:22:46 +00:00
parent db9a7bba22
commit 1e8b63eb88
2 changed files with 110 additions and 2 deletions
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56
Doc/lib/libposix.tex
View File

@ -150,6 +150,11 @@ Return the current process's group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{getpgrp}{}
Return the current process group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{getpid}{}
Return the current process id.
(Not on MS-DOS.)
@ -194,8 +199,25 @@ Like \code{stat()}, but do not follow symbolic links. (On systems
without symbolic links, this is identical to \code{posix.stat}.)
\end{funcdesc}
\begin{funcdesc}{mkdir}{path\, mode}
\begin{funcdesc}{mkfifo}{path\optional{\, mode}}
Create a FIFO (a POSIX named pipe) named \var{path} with numeric mode
\var{mode}. The default \var{mode} is 0666 (octal). The current
umask value is first masked out from the mode.
(Not on MS-DOS.)
FIFOs are pipes that can be accessed like regular files. FIFOs exist
until they are deleted (for example with \code{os.unlink}).
Generally, FIFOs are used as rendez-vous between ``client'' and
``server'' type processes: the server opens the FIFO for reading, and
the client opens it for writing. Note that \code{mkfifo()} doesn't
open the FIFO -- it just creates the rendez-vous point.
\end{funcdesc}
\begin{funcdesc}{mkdir}{path\optional{\, mode}}
Create a directory named \var{path} with numeric mode \var{mode}.
The default \var{mode} is 0777 (octal). On some systems, \var{mode}
is ignored. Where it is used, the current umask value is first
masked out.
\end{funcdesc}
\begin{funcdesc}{nice}{increment}
@ -263,6 +285,25 @@ Set the current process's group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setpgrp}{}
Calls the system call \code{setpgrp()} or \code{setpgrp(0, 0)}
depending on which version is implemented (if any). See the {\UNIX}
manual for the semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setpgid}{pid\, pgrp}
Calls the system call \code{setpgid()}. See the {\UNIX} manual for
the semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setsid}{}
Calls the system call \code{setsid()}. See the {\UNIX} manual for the
semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setuid}{uid}
Set the current process's user id.
(Not on MS-DOS.)
@ -304,6 +345,19 @@ value is the exit status of the process as returned by Standard C
\code{system()}.
\end{funcdesc}
\begin{funcdesc}{tcgetpgrp}{fd}
Return the process group associated with the terminal given by
\var{fd} (an open file descriptor as returned by \code{posix.open()}).
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{tcsetpgrp}{fd\, pg}
Set the process group associated with the terminal given by
\var{fd} (an open file descriptor as returned by \code{posix.open()})
to \var{pg}.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{times}{}
Return a 5-tuple of floating point numbers indicating accumulated (CPU
or other)

56
Doc/libposix.tex
View File

@ -150,6 +150,11 @@ Return the current process's group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{getpgrp}{}
Return the current process group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{getpid}{}
Return the current process id.
(Not on MS-DOS.)
@ -194,8 +199,25 @@ Like \code{stat()}, but do not follow symbolic links. (On systems
without symbolic links, this is identical to \code{posix.stat}.)
\end{funcdesc}
\begin{funcdesc}{mkdir}{path\, mode}
\begin{funcdesc}{mkfifo}{path\optional{\, mode}}
Create a FIFO (a POSIX named pipe) named \var{path} with numeric mode
\var{mode}. The default \var{mode} is 0666 (octal). The current
umask value is first masked out from the mode.
(Not on MS-DOS.)
FIFOs are pipes that can be accessed like regular files. FIFOs exist
until they are deleted (for example with \code{os.unlink}).
Generally, FIFOs are used as rendez-vous between ``client'' and
``server'' type processes: the server opens the FIFO for reading, and
the client opens it for writing. Note that \code{mkfifo()} doesn't
open the FIFO -- it just creates the rendez-vous point.
\end{funcdesc}
\begin{funcdesc}{mkdir}{path\optional{\, mode}}
Create a directory named \var{path} with numeric mode \var{mode}.
The default \var{mode} is 0777 (octal). On some systems, \var{mode}
is ignored. Where it is used, the current umask value is first
masked out.
\end{funcdesc}
\begin{funcdesc}{nice}{increment}
@ -263,6 +285,25 @@ Set the current process's group id.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setpgrp}{}
Calls the system call \code{setpgrp()} or \code{setpgrp(0, 0)}
depending on which version is implemented (if any). See the {\UNIX}
manual for the semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setpgid}{pid\, pgrp}
Calls the system call \code{setpgid()}. See the {\UNIX} manual for
the semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setsid}{}
Calls the system call \code{setsid()}. See the {\UNIX} manual for the
semantics.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{setuid}{uid}
Set the current process's user id.
(Not on MS-DOS.)
@ -304,6 +345,19 @@ value is the exit status of the process as returned by Standard C
\code{system()}.
\end{funcdesc}
\begin{funcdesc}{tcgetpgrp}{fd}
Return the process group associated with the terminal given by
\var{fd} (an open file descriptor as returned by \code{posix.open()}).
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{tcsetpgrp}{fd\, pg}
Set the process group associated with the terminal given by
\var{fd} (an open file descriptor as returned by \code{posix.open()})
to \var{pg}.
(Not on MS-DOS.)
\end{funcdesc}
\begin{funcdesc}{times}{}
Return a 5-tuple of floating point numbers indicating accumulated (CPU
or other)