TMPFILE(3) manual page
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tmpfile - create a temporary file
#include <stdio.h>
FILE *tmpfile(void);
The tmpfile() function opens a unique temporary
file in binary read/write (w+b) mode. The file will be automatically deleted
when it is closed or the program terminates.
The tmpfile() function
returns a stream descriptor, or NULL if a unique filename cannot be generated
or the unique file cannot be opened. In the latter case, errno is set to
indicate the error.
- EACCES
- Search permission denied for directory
in file’s path prefix.
- EEXIST
- Unable to generate a unique filename.
- EINTR
- The call was interrupted by a signal.
- EMFILE
- Too many file descriptors in
use by the process.
- ENFILE
- Too many files open in the system.
- ENOSPC
- There
was no room in the directory to add the new filename.
- EROFS
- Read-only filesystem.
SVr4, 4.3BSD, C89, C99, SUSv2, POSIX.1-2001.
POSIX.1-2001 specifies:
an error message may be written to stdout if the stream cannot be opened.
The standard does not specify the directory that tmpfile() will use. Glibc
will try the path prefix P_tmpdir defined in <stdio.h>, and if that fails
the directory /tmp.
exit(3)
, mkstemp(3)
, mktemp(3)
, tempnam(3)
,
tmpnam(3)
This page is part of release 3.78 of the Linux man-pages
project. A description of the project, information about reporting bugs,
and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.
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