mirror of https://github.com/mkerrisk/man-pages
96 lines
2.2 KiB
Plaintext
96 lines
2.2 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "CREAT" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" creat
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.SH NAME
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creat \- create a new file or rewrite an existing one
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.SH SYNOPSIS
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.LP
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\fB#include <sys/stat.h> \fP
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\fB
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.br
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#include <fcntl.h>
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.br
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.sp
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int creat(const char *\fP\fIpath\fP\fB, mode_t\fP \fImode\fP\fB);
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The function call:
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.sp
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.RS
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.nf
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\fBcreat(path, mode)
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\fP
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.fi
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.RE
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.LP
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shall be equivalent to:
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.sp
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.RS
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.nf
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\fBopen(path, O_WRONLY|O_CREAT|O_TRUNC, mode)
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\fP
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.fi
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.RE
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.SH RETURN VALUE
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.LP
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Refer to \fIopen\fP() .
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.SH ERRORS
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.LP
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Refer to \fIopen\fP() .
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.SS Creating a File
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.LP
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The following example creates the file \fB/tmp/file\fP with read and
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write permissions for the file owner and read permission
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for group and others. The resulting file descriptor is assigned to
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the \fIfd\fP variable.
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.sp
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.RS
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.nf
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\fB#include <fcntl.h>
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\&...
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int fd;
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mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
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char *filename = "/tmp/file";
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\&...
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fd = creat(filename, mode);
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\&...
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\fP
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.fi
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.RE
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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The \fIcreat\fP() function is redundant. Its services are also provided
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by the \fIopen\fP() function. It has been included primarily for historical
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purposes since many existing
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applications depend on it. It is best considered a part of the C binding
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rather than a function that should be provided in other
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languages.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fIopen\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
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\fI<fcntl.h>\fP, \fI<sys/stat.h>\fP, \fI<sys/types.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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