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tmpfile(3c) [sunos man page]

tmpfile(3C)						   Standard C Library Functions 					       tmpfile(3C)

tmpfile - create a temporary file SYNOPSIS
#include <stdio.h> FILE *tmpfile(void); DESCRIPTION
The tmpfile() function creates a temporary file and opens a corresponding stream. The file will automatically be deleted when all refer- ences to the file are closed. The file is opened as in fopen(3C) for update (w+). The largest value that can be represented correctly in an object of type off_t will be established as the offset maximum in the open file description. RETURN VALUES
Upon successful completion, tmpfile() returns a pointer to the stream of the file that is created. Otherwise, it returns a null pointer and sets errno to indicate the error. ERRORS
The tmpfile() function will fail if: EINTR A signal was caught during the execution of tmpfile(). EMFILE There are OPEN_MAX file descriptors currently open in the calling process. ENFILE The maximum allowable number of files is currently open in the system. ENOSPC The directory or file system which would contain the new file cannot be expanded. The tmpfile() function may fail if: EMFILE There are FOPEN_MAX streams currently open in the calling process. ENOMEM Insufficient storage space is available. USAGE
The stream refers to a file which is unlinked. If the process is killed in the period between file creation and unlinking, a permanent file may be left behind. The tmpfile() function has a transitional interface for 64-bit file offsets. See lf64(5). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
unlink(2), fopen(3C), mkstemp(3C), mktemp(3C), tmpnam(3C), lf64(5), standards(5) SunOS 5.10 4 Aug 2003 tmpfile(3C)

Check Out this Related Man Page

TMPFILE(3)						     Linux Programmer's Manual							TMPFILE(3)

tmpfile - create a temporary file SYNOPSIS
#include <stdio.h> FILE *tmpfile(void); DESCRIPTION
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. RETURN VALUE
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. ERRORS
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; see signal(7). EMFILE The per-process limit on the number of open file descriptors has been reached. ENFILE The system-wide limit on the total number of open files has been reached. ENOSPC There was no room in the directory to add the new filename. EROFS Read-only filesystem. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+---------+ |Interface | Attribute | Value | +----------+---------------+---------+ |tmpfile() | Thread safety | MT-Safe | +----------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD, SUSv2. NOTES
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. SEE ALSO
exit(3), mkstemp(3), mktemp(3), tempnam(3), tmpnam(3) COLOPHON
This page is part of release 4.15 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 2016-03-15 TMPFILE(3)

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