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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | VERSIONS | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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tmpfile(3) Library Functions Manual tmpfile(3)
tmpfile - create a temporary file
Standard C library (libc, -lc)
#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; 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.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ tmpfile() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
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, then the directory /tmp.
C11, POSIX.1-2008.
POSIX.1-2001, C89, SVr4, 4.3BSD, SUSv2.
POSIX.1-2001 specifies: an error message may be written to stdout
if the stream cannot be opened.
exit(3), mkstemp(3), mktemp(3), tempnam(3), tmpnam(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
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⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
[email protected]
Linux man-pages 6.9.1 2024-05-02 tmpfile(3)
Pages that refer to this page: getpid(2), open(2), exit(3), mkdtemp(3), mkstemp(3), mktemp(3), stdio(3), tempnam(3), tmpnam(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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