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- MKTEMP(3) UNIX Programmer's Manual MKTEMP(3)
-
- NNAAMMEE
- mmkktteemmpp - make temporary file name (unique)
-
- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<uunniissttdd..hh>>
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- _c_h_a_r _*
- mmkktteemmpp(_c_h_a_r _*_t_e_m_p_l_a_t_e)
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- _i_n_t
- mmkksstteemmpp(_c_h_a_r _*_t_e_m_p_l_a_t_e)
-
- DDEESSCCRRIIPPTTIIOONN
- The mmkktteemmpp() function takes the given file name template and overwrites a
- portion of it to create a file name. This file name is unique and suit
- able for use by the application. The template may be any file name with
- some number of `Xs' appended to it, for example _/_t_m_p_/_t_e_m_p_._X_X_X_X. The
- trailing `Xs' are replaced with the current process number and/or a
- unique letter combination. The number of unique file names mmkktteemmpp() can
- return depends on the number of `Xs' provided; six `Xs' will result in
- mmkktteemmpp() testing roughly 26 ** 6 combinations.
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- The mmkksstteemmpp() function makes the same replacement to the template and
- creates the template file, mode 0600, returning a file descriptor opened
- for reading and writing. This avoids the race between testing for a
- file's existence and opening it for use.
-
- RREETTUURRNN VVAALLUUEESS
- The mmkktteemmpp() function returns a pointer to the template on success and
- NULL on failure. The mmkksstteemmpp() function returns -1 if no suitable file
- could be created. If either call fails an error code is placed in the
- global variable _e_r_r_n_o.
-
- EERRRROORRSS
- The mmkktteemmpp() and mmkksstteemmpp() functions may set _e_r_r_n_o to one of the follow
- ing values:
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- [ENOTDIR] The pathname portion of the template is not an existing direc
- tory.
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- The mmkktteemmpp() and mmkksstteemmpp() functions may also set _e_r_r_n_o to any value
- specified by the stat(2) function.
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- The mmkksstteemmpp() function may also set _e_r_r_n_o to any value specified by the
- open(2) function.
-
- SSEEEE AALLSSOO
- chmod(2), getpid(2), open(2), stat(2)
-
- HHIISSTTOORRYY
- A mmkktteemmpp function appeared in Version 7 AT&T UNIX.
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- BSD Experimental April 19, 1991 1
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