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NAME
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opentemp – create and open a uniquely-named file
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SYNOPSIS
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#include <u.h>
#include <libc.h>
int opentemp(char *template, int mode)
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DESCRIPTION
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Opentemp replaces template by a unique file name, and returns
the address of the template. The template should look like a file
name with eleven trailing Xs. The Xs are replaced by a letter
followed by the current process id. Letters from a to z are tried
until the name of a file that does not yet exist (see access(2))
is generated. Opentemp then opens
the file for the given mode and returns the file descriptor. Most
calls should use a mode of ORDWR|ORCLOSE.
If no such name can be generated, opentemp returns –1.
Opentemp avoids races. Two simultaneous calls to opentemp will
never return the same name.
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SOURCE
SEE ALSO
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