1CREAT(3P)                  POSIX Programmer's Manual                 CREAT(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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11

NAME

13       creat — create a new file or rewrite an existing one
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SYNOPSIS

16       #include <sys/stat.h>
17       #include <fcntl.h>
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19       int creat(const char *path, mode_t mode);
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DESCRIPTION

22       The creat() function shall behave as if it is implemented as follows:
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24           int creat(const char *path, mode_t mode)
25           {
26               return open(path, O_WRONLY|O_CREAT|O_TRUNC, mode);
27           }
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RETURN VALUE

30       Refer to open().
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ERRORS

33       Refer to open().
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35       The following sections are informative.
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EXAMPLES

38   Creating a File
39       The following example creates the file /tmp/file with  read  and  write
40       permissions  for  the file owner and read permission for group and oth‐
41       ers. The resulting file descriptor is assigned to the fd variable.
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43           #include <fcntl.h>
44           ...
45           int fd;
46           mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
47           char *pathname = "/tmp/file";
48           ...
49           fd = creat(pathname, mode);
50           ...
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APPLICATION USAGE

53       None.
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RATIONALE

56       The creat() function is redundant. Its services are  also  provided  by
57       the open() function. It has been included primarily for historical pur‐
58       poses since many existing applications depend on it. It is best consid‐
59       ered a part of the C binding rather than a function that should be pro‐
60       vided in other languages.
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FUTURE DIRECTIONS

63       None.
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SEE ALSO

66       mknod(), open()
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68       The Base Definitions volume of POSIX.1‐2008,  <fcntl.h>,  <sys_stat.h>,
69       <sys_types.h>
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72       Portions  of  this text are reprinted and reproduced in electronic form
73       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
74       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
75       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
76       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
77       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
78       event of any discrepancy between this version and the original IEEE and
79       The Open Group Standard, the original IEEE and The Open Group  Standard
80       is  the  referee document. The original Standard can be obtained online
81       at http://www.unix.org/online.html .
82
83       Any typographical or formatting errors that appear  in  this  page  are
84       most likely to have been introduced during the conversion of the source
85       files to man page format. To report such errors,  see  https://www.ker‐
86       nel.org/doc/man-pages/reporting_bugs.html .
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90IEEE/The Open Group                  2013                            CREAT(3P)
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