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TMPNAM
!!!TMPNAM
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
NOTES
BUGS
CONFORMING TO
SEE ALSO
----
!!NAME


tmpnam - create a name for a temporary file
!!SYNOPSIS


__#include
__''s''__);
__
!!DESCRIPTION


The __tmpnam()__ function returns a pointer to a string
that is a valid filename, and such that a file with this
name did not exist at some point in time, so that naive
programmers may think it a suitable name for a temporary
file. If the argument ''s'' is NULL this name is
generated in an internal static buffer and may be
overwritten by the next call to __tmpnam()__. If ''s''
is not NULL, the name is copied to the character array (of
length at least ''L_tmpnam'') pointed at by ''s'' and
the value ''s'' is returned in case of
success.


The path name that is created, has a directory prefix
''P_tmpdir''. (Both ''L_tmpnam'' and ''P_tmpdir''
are defined in '''', just like the TMP_MAX
mentioned below.)
!!RETURN VALUE


The __tmpnam()__ function returns a pointer to a unique
temporary filename, or NULL if a unique name cannot be
generated.
!!ERRORS


No errors are defined.
!!NOTES


Portable applications that use threads cannot call
__tmpnam()__ with NULL parameter if either
_POSIX_THREAD_SAFE_FUNCTIONS or _POSIX_THREADS is
defined.


The __tmpnam()__ function generates a different string
each time it is called, up to TMP_MAX times. If it is called
more than TMP_MAX times, the behaviour is implementation
defined.
!!BUGS


Never use this function. Use tmpfile(3)
instead.
!!CONFORMING TO


SVID 2, POSIX, BSD 4.3, ISO 9899
!!SEE ALSO


mktemp(3), mkstemp(3), tempnam(3),
tmpfile(3)
----

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Last edited on Tuesday, June 4, 2002 12:24:38 am by "perry"

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