man creat () - create a new file or rewrite an existing one

NAME

creat - create a new file or rewrite an existing one

SYNOPSIS

#include <sys/stat.h>

#include <fcntl.h>

int creat(const char *path, mode_t mode);

DESCRIPTION

The function call: 

creat(path, mode)




shall be equivalent to:


open(path, O_WRONLY|O_CREAT|O_TRUNC, mode)



RETURN VALUE

Refer to open() .

ERRORS

Refer to open() .


The following sections are informative.

EXAMPLES
Creating a File

The following example creates the file /tmp/file with read and
write permissions for the file owner and read permission
for group and others. The resulting file descriptor is assigned to
the fd variable.


#include <fcntl.h>
...
int fd;
mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
char *filename = "/tmp/file";
...
fd = creat(filename, mode);
...



APPLICATION USAGE

None.

RATIONALE

The creat() function is redundant. Its services are also provided
by the open() function. It has been included primarily for historical
purposes since many existing
applications depend on it. It is best considered a part of the C binding
rather than a function that should be provided in other
languages.

FUTURE DIRECTIONS

None.

SEE ALSO

open() , the Base Definitions volume of IEEE Std 1003.1-2001,
<fcntl.h>, <sys/stat.h>, <sys/types.h>

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 .