'\" t
.\"     Title: gfs_pio_create
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 3 Sep 2015
.\"    Manual: Gfarm
.\"    Source: Gfarm
.\"  Language: English
.\"
.TH "GFS_PIO_CREATE" "3" "3 Sep 2015" "Gfarm" "Gfarm"
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.SH "NAME"
gfs_pio_create \- create a file in the Gfarm file system
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <gfarm/gfarm\&.h>
.fi
.ft
.HP \w'gfarm_error_t\ gfs_pio_create('u
.BI "gfarm_error_t\ gfs_pio_create(const\ char\ *\ " "gfarm_url" ", int\ " "flags" ", gfarm_mode_t\ " "mode" ", GFS_File\ *\ " "gfp" ");"
.SH "DESCRIPTION"
.PP
\fBgfs_pio_create()\fR
creates a new file in the Gfarm file system whose name is the string pointed to by
\fIgfarm_url\fR
with the access mode
\fImode\fR, and returns a
\fIGFS_File\fR
structure to the address pointed to by
\fIgfp\fR\&.
\fIMode\fR
specifies the file permissions to be created, and is modified by the process\*(Aqs
\fIumask\fR\&.
.PP
The
\fIflags\fR
argument has the same meaning as the second argument of
\fBgfs_pio_open()\fR, including the point such that exactly one of
\fIGFARM_FILE_RDONLY\fR,
\fIGFARM_FILE_WRONLY\fR, and
\fIGFARM_FILE_RDWR\fR
should be specified\&. In addition, it is possible to specify
\fIGFARM_FILE_EXCLUSIVE\fR\&. With this flag,
\fBgfs_pio_create()\fR
will fail when the file already exists\&.
.PP
Note that
\fIGFARM_FILE_TRUNC\fR
must be explicitly specified by the
\fIflags\fR
argument if needed\&.
.SH "RETURN VALUES"
.PP
\fBGFARM_ERR_NO_ERROR\fR
.RS 4
The function terminated successfully\&.
.RE
.PP
\fBGFARM_ERR_IS_A_DIRECTORY\fR
.RS 4
\fIgfarm_url\fR
refers to a directory\&.
.RE
.PP
\fBGFARM_ERR_IS_A_SYMBOLIC_LINK\fR
.RS 4
\fIgfarm_url\fR
refers to a symbolic link\&.
.RE
.PP
\fBGFARM_ERR_OPERATION_NOT_PERMITTED\fR
.RS 4
\fIgfarm_url\fR
refers to not a regular file\&.
.RE
.PP
\fBGFARM_ERR_NOT_A_DIRECTORY\fR
.RS 4
A component used as a directory in
\fIgfarm_url\fR
is not, in fact, a directory\&.
.RE
.PP
\fBGFARM_ERR_PERMISSION_DENIED\fR
.RS 4
The requested access to the file is not allowed, or one of the directories in
\fIgfarm_url\fR
did not allow search (execute) permission, or the file did not exist yet and write access to the parent directory is not allowed\&. Or, the authentication to the metadata server fails\&.
.RE
.PP
\fBGFARM_ERR_NO_MEMORY\fR
.RS 4
Insufficient memory was available\&.
.RE
.PP
\fBGFARM_ERR_INVALID_ARGUMENT\fR
.RS 4
\fIflags\fR
is not valid\&.
.RE
.PP
\fBGFARM_ERR_GFARM_URL_HOST_IS_MISSING\fR
.RS 4
\fIgfarm_url\fR
does not include a metadata server\&.
.RE
.PP
\fBGFARM_ERR_GFARM_URL_PORT_IS_MISSING\fR
.RS 4
\fIgfarm_url\fR
does not include a port number of the metadata server\&.
.RE
.PP
\fBGFARM_ERR_UNKNOWN_HOST\fR
.RS 4
The metadata server cannot be resolved\&.
.RE
.PP
\fBGFARM_ERR_TOO_MANY_OPEN_FILES\fR
.RS 4
The process opens too many files\&.
.RE
.PP
\fBGFARM_ERR_TOO_MANY_OPEN_FILES_IN_SYSTEM\fR
.RS 4
The system limit on the total number of open files has been reached\&.
.RE
.PP
\fBGFARM_ERR_NETWORK_IS_UNREACHABLE\fR
.RS 4
Network is unrechable\&.
.RE
.PP
\fBGFARM_ERR_OPERATION_TIMED_OUT\fR
.RS 4
Connetion timeout occurs\&.
.RE
.PP
\fBGFARM_ERR_PROTOCOL\fR
.RS 4
Protocol error occurs\&.
.RE
.PP
\fBGFARM_ERR_BROKEN_PIPE\fR
.RS 4
Connection to the metadata server is broken\&.
.RE
.PP
\fBGFARM_ERR_PROTOCOL_NOT_SUPPORTED\fR
.RS 4
Specified authentication protocol is not supported\&.
.RE
.PP
\fBGFARM_ERR_AUTHENTICATION\fR
.RS 4
User authentication failed when connecting to the metadata server\&.
.RE
.PP
\fBGFARM_ERR_ALREADY_EXISTS\fR
.RS 4
\fIgfarm_url\fR
already exists and GFARM_FILE_EXCLUSIVE was used\&.
.RE
.PP
Others
.RS 4
An error except the above occurred\&. The reason is shown by
\fBgfarm_error_string\fR(3)\&.
.RE
.SH "SEE ALSO"
.PP
\fBgfs_pio_close\fR(3),
\fBgfs_pio_create\fR(3),
\fBgfs_pio_eof\fR(3),
\fBgfs_pio_error\fR(3),
\fBgfs_pio_flush\fR(3),
\fBgfs_pio_getc\fR(3),
\fBgfs_pio_getline\fR(3),
\fBgfs_pio_open\fR(3),
\fBgfs_pio_putc\fR(3),
\fBgfs_pio_putline\fR(3),
\fBgfs_pio_puts\fR(3),
\fBgfs_pio_read\fR(3),
\fBgfs_pio_seek\fR(3),
\fBgfs_pio_ungetc\fR(3),
\fBgfs_pio_write\fR(3)