Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

mkstemp(3c) [sunos man page]

mkstemp(3C)						   Standard C Library Functions 					       mkstemp(3C)

NAME
mkstemp - make a unique file name from a template and open the file SYNOPSIS
#include <stdlib.h> int mkstemp(char *template); DESCRIPTION
The mkstemp() function replaces the contents of the string pointed to by template by a unique file name, and returns a file descriptor for the file open for reading and writing. The function thus prevents any possible race condition between testing whether the file exists and opening it for use. The string in template should look like a file name with six trailing 'X's; mkstemp() replaces each 'X' with a charac- ter from the portable file name character set. The characters are chosen such that the resulting name does not duplicate the name of an existing file. RETURN VALUES
Upon successful completion, mkstemp() returns an open file descriptor. Otherwise -1 is returned if no suitable file could be created. ERRORS
No errors are defined. USAGE
It is possible to run out of letters. The mkstemp() function does not check to determine whether the file name part of template exceeds the maximum allowable file name length. The tmpfile(3C) function is preferred over this function. The mkstemp() function is frequently used to create a temporary file that will be removed by the application before the application termi- nates. The mkstemp() function has a transitional interface for 64-bit file offsets. See lf64(5). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
getpid(2), open(2), tmpfile(3C), tmpnam(3C), attributes(5), lf64(5), standards(5) SunOS 5.10 15 Sep 2004 mkstemp(3C)

Check Out this Related Man Page

mktemp(3C)						   Standard C Library Functions 						mktemp(3C)

NAME
mktemp - make a unique file name from a template SYNOPSIS
#include <stdlib.h> char *mktemp(char *template); DESCRIPTION
The mktemp() function replaces the contents of the string pointed to by template with a unique file name, and returns template. The string in template should look like a file name with six trailing 'X's; mktemp() will replace the 'X's with a character string that can be used to create a unique file name. Only 26 unique file names per thread can be created for each unique template. RETURN VALUES
The mktemp() function returns the pointer template. If a unique name cannot be created, template points to a null string. ERRORS
No errors are defined. EXAMPLES
Example 1: Generate a filename. The following example replaces the contents of the "template" string with a 10-character filename beginning with the characters "file" and returns a pointer to the "template" string that contains the new filename. #include <stdlib.h> ... char *template = "/tmp/fileXXXXXX"; char *ptr; ptr = mktemp(template); USAGE
Between the time a pathname is created and the file opened, it is possible for some other process to create a file with the same name. The mkstemp(3C) function avoids this problem and is preferred over this function. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
mkstemp(3C), tmpfile(3C), tmpnam(3C), attributes(5), standards(5) SunOS 5.10 15 Sep 2004 mktemp(3C)
Man Page