TMPFILE(3C)TMPFILE(3C)NAMEtmpfile - create a temporary file
The tmpfile() function creates a temporary file and opens a correspond‐
ing stream. The file will automatically be deleted when all references
to the file are closed. The file is opened as in fopen(3C) for update
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
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.
The tmpfile() function will fail if:
A signal was caught during the execution of tmpfile().
There are OPEN_MAX file descriptors currently open in the
The maximum allowable number of files is currently open in
The directory or file system which would contain the new file
cannot be expanded.
The tmpfile() function may fail if:
There are FOPEN_MAX streams currently open in the calling
Insufficient storage space is available.
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).
See attributes(5) for descriptions of the following attributes:
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
│Interface Stability │ Standard │
SEE ALSOunlink(2), fopen(3C), mkstemp(3C), mktemp(3C), tmpnam(3C), lf64(5),
Aug 4, 2003 TMPFILE(3C)