1 files changed, 160 insertions, 0 deletions
diff --git a/man3p/mkfifo.3p b/man3p/mkfifo.3p
new file mode 100644
index 000000000..2b5c79eb4
--- /dev/null
+++ b/man3p/mkfifo.3p
@@ -0,0 +1,160 @@
+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "MKFIFO" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" mkfifo 
+.SH NAME
+mkfifo \- make a FIFO special file
+.SH SYNOPSIS
+.LP
+\fB#include <sys/stat.h>
+.br
+.sp
+int mkfifo(const char *\fP\fIpath\fP\fB, mode_t\fP \fImode\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fImkfifo\fP() function shall create a new FIFO special file named
+by the pathname pointed to by \fIpath\fP. The file
+permission bits of the new FIFO shall be initialized from \fImode\fP.
+The file permission bits of the \fImode\fP argument shall
+be modified by the process' file creation mask.
+.LP
+When bits in \fImode\fP other than the file permission bits are set,
+the effect is implementation-defined.
+.LP
+If \fIpath\fP names a symbolic link, \fImkfifo\fP() shall fail and
+set \fIerrno\fP to [EEXIST].
+.LP
+The FIFO's user ID shall be set to the process' effective user ID.
+The FIFO's group ID shall be set to the group ID of the
+parent directory or to the effective group ID of the process. Implementations
+shall provide a way to initialize the FIFO's group ID
+to the group ID of the parent directory. Implementations may, but
+need not, provide an implementation-defined way to initialize the
+FIFO's group ID to the effective group ID of the calling process.
+.LP
+Upon successful completion, \fImkfifo\fP() shall mark for update the
+\fIst_atime\fP, \fIst_ctime\fP, and \fIst_mtime\fP
+fields of the file. Also, the \fIst_ctime\fP and \fIst_mtime\fP fields
+of the directory that contains the new entry shall be
+marked for update.
+.SH RETURN VALUE
+.LP
+Upon successful completion, 0 shall be returned. Otherwise, -1 shall
+be returned, no FIFO shall be created, and \fIerrno\fP
+shall be set to indicate the error.
+.SH ERRORS
+.LP
+The \fImkfifo\fP() function shall fail if:
+.TP 7
+.B EACCES
+A component of the path prefix denies search permission, or write
+permission is denied on the parent directory of the FIFO to
+be created.
+.TP 7
+.B EEXIST
+The named file already exists.
+.TP 7
+.B ELOOP
+A loop exists in symbolic links encountered during resolution of the
+\fIpath\fP argument.
+.TP 7
+.B ENAMETOOLONG
+The length of the \fIpath\fP argument exceeds {PATH_MAX} or a pathname
+component is longer than {NAME_MAX}.
+.TP 7
+.B ENOENT
+A component of the path prefix specified by \fIpath\fP does not name
+an existing directory or \fIpath\fP is an empty
+string.
+.TP 7
+.B ENOSPC
+The directory that would contain the new file cannot be extended or
+the file system is out of file-allocation resources.
+.TP 7
+.B ENOTDIR
+A component of the path prefix is not a directory.
+.TP 7
+.B EROFS
+The named file resides on a read-only file system.
+.sp
+.LP
+The \fImkfifo\fP() function may fail if:
+.TP 7
+.B ELOOP
+More than {SYMLOOP_MAX} symbolic links were encountered during resolution
+of the \fIpath\fP argument.
+.TP 7
+.B ENAMETOOLONG
+As a result of encountering a symbolic link in resolution of the \fIpath\fP
+argument, the length of the substituted pathname
+string exceeded {PATH_MAX}.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.SS Creating a FIFO File
+.LP
+The following example shows how to create a FIFO file named \fB/home/cnd/mod_done\fP,
+with read/write permissions for owner,
+and with read permissions for group and others.
+.sp
+.RS
+.nf
+
+\fB#include <sys/types.h>
+#include <sys/stat.h>
+.sp
+
+int status;
+\&...
+status = mkfifo("/home/cnd/mod_done", S_IWUSR | S_IRUSR |
+    S_IRGRP | S_IROTH);
+\fP
+.fi
+.RE
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+The syntax of this function is intended to maintain compatibility
+with historical implementations of \fImknod\fP(). The latter function
+was included in the 1984 /usr/group standard but only for use in
+creating FIFO special files. The \fImknod\fP() function was originally
+excluded from the
+POSIX.1-1988 standard as implementation-defined and replaced by \fImkdir\fP()
+and
+\fImkfifo\fP(). The \fImknod\fP() function is now included for alignment
+with the Single
+UNIX Specification.
+.LP
+The POSIX.1-1990 standard required that the group ID of a newly created
+FIFO be set to the group ID of its parent directory or
+to the effective group ID of the creating process. FIPS 151-2 required
+that implementations provide a way to have the group ID be
+set to the group ID of the containing directory, but did not prohibit
+implementations also supporting a way to set the group ID to
+the effective group ID of the creating process. Conforming applications
+should not assume which group ID will be used. If it
+matters, an application can use \fIchown\fP() to set the group ID
+after the FIFO is created,
+or determine under what conditions the implementation will set the
+desired group ID.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIumask\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+\fI<sys/stat.h>\fP, \fI<sys/types.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .