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libtmpfilefd

 

NAME

pm_tmpfile_fd() - create a temporary unnamed file

SYNOPSIS

 #include <netpbm/pm.h>
 
 FILE *
 pm_tmpfile_fd(void);
 

EXAMPLE

This simple example creates a temporary file, writes 'hello world' to it, then reads back and prints those contents.

 #include <netpbm/pm.h>
 
 int fd;
 
 fd = pm_tmpfile();
 
 write(fd, 'hello world\n', 17);
 
 lseek(fd, 0, SEEK_SET);
 
 read(fd, buffer, sizeof(buffer));
 
 fprintf(STDOUT, 'temp file contains '%s'\n', buffer);
 
 close(fd);
 
 

DESCRIPTION

This library function is part of Netpbm(1).

pm_tmpfile_fd() is analogous to pm_tmpfile()(1).Theonlydifferenceis that it opens the file as a low level file, as open() would, rather than as a stream, as fopen() would.

If you need to refer to the temporary file by name, use pm_make_tmpfile_fd() instead.

HISTORY

pm_tmpfile() was introduced in Netpbm 10.42 (March 2008).