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Diffstat (limited to 'newlib/libc/stdio/tmpnam.c')
| -rw-r--r-- | newlib/libc/stdio/tmpnam.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/newlib/libc/stdio/tmpnam.c b/newlib/libc/stdio/tmpnam.c deleted file mode 100644 index ec346c878..000000000 --- a/newlib/libc/stdio/tmpnam.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * tmpname.c - * Original Author: G. Haley - */ - -/* -FUNCTION -<<tmpnam>>, <<tempnam>>---name for a temporary file - -INDEX - tmpnam -INDEX - tempnam -INDEX - _tmpnam_r -INDEX - _tempnam_r - -ANSI_SYNOPSIS - #include <stdio.h> - char *tmpnam(char *<[s]>); - char *tempnam(char *<[dir]>, char *<[pfx]>); - char *_tmpnam_r(void *<[reent]>, char *<[s]>); - char *_tempnam_r(void *<[reent]>, char *<[dir]>, char *<[pfx]>); - -TRAD_SYNOPSIS - #include <stdio.h> - char *tmpnam(<[s]>) - char *<[s]>; - - char *tempnam(<[dir]>, <[pfx]>) - char *<[dir]>; - char *<[pfx]>; - - char *_tmpnam_r(<[reent]>, <[s]>) - char *<[reent]>; - char *<[s]>; - - char *_tempnam_r(<[reent]>, <[dir]>, <[pfx]>) - char *<[reent]>; - char *<[dir]>; - char *<[pfx]>; - -DESCRIPTION -Use either of these functions to generate a name for a temporary file. -The generated name is guaranteed to avoid collision with other files -(for up to <<TMP_MAX>> calls of either function). - -<<tmpnam>> generates file names with the value of <<P_tmpdir>> -(defined in `<<stdio.h>>') as the leading directory component of the path. - -You can use the <<tmpnam>> argument <[s]> to specify a suitable area -of memory for the generated filename; otherwise, you can call -<<tmpnam(NULL)>> to use an internal static buffer. - -<<tempnam>> allows you more control over the generated filename: you -can use the argument <[dir]> to specify the path to a directory for -temporary files, and you can use the argument <[pfx]> to specify a -prefix for the base filename. - -If <[dir]> is <<NULL>>, <<tempnam>> will attempt to use the value of -environment variable <<TMPDIR>> instead; if there is no such value, -<<tempnam>> uses the value of <<P_tmpdir>> (defined in `<<stdio.h>>'). - -If you don't need any particular prefix to the basename of temporary -files, you can pass <<NULL>> as the <[pfx]> argument to <<tempnam>>. - -<<_tmpnam_r>> and <<_tempnam_r>> are reentrant versions of <<tmpnam>> -and <<tempnam>> respectively. The extra argument <[reent]> is a -pointer to a reentrancy structure. - -WARNINGS -The generated filenames are suitable for temporary files, but do not -in themselves make files temporary. Files with these names must still -be explicitly removed when you no longer want them. - -If you supply your own data area <[s]> for <<tmpnam>>, you must ensure -that it has room for at least <<L_tmpnam>> elements of type <<char>>. - -RETURNS -Both <<tmpnam>> and <<tempnam>> return a pointer to the newly -generated filename. - -PORTABILITY -ANSI C requires <<tmpnam>>, but does not specify the use of -<<P_tmpdir>>. The System V Interface Definition (Issue 2) requires -both <<tmpnam>> and <<tempnam>>. - -Supporting OS subroutines required: <<close>>, <<fstat>>, <<getpid>>, -<<isatty>>, <<lseek>>, <<open>>, <<read>>, <<sbrk>>, <<write>>. - -The global pointer <<environ>> is also required. -*/ - -#include <_ansi.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <reent.h> -#include <errno.h> - -/* Try to open the file specified, if it can't be opened then try - another one. Return nonzero if successful, otherwise zero. */ - -static int -worker (ptr, result, part1, part2, part3, part4) - struct _reent *ptr; - char *result; - _CONST char *part1; - _CONST char *part2; - int part3; - int *part4; -{ - /* Generate the filename and make sure that there isn't one called - it already. */ - - while (1) - { - int t; - _sprintf_r (ptr, result, "%s/%s%x.%x", part1, part2, part3, *part4); - (*part4)++; - t = _open_r (ptr, result, O_RDONLY, 0); - if (t == -1) - { - if (ptr->_errno == ENOSYS) - { - result[0] = '\0'; - return 0; - } - break; - } - _close_r (ptr, t); - } - return 1; -} - -char * -_DEFUN (_tmpnam_r, (p, s), - struct _reent *p _AND - char *s) -{ - char *result; - int pid; - - if (s == NULL) - { - /* ANSI states we must use an internal static buffer if s is NULL */ - _REENT_CHECK_EMERGENCY(p); - result = _REENT_EMERGENCY(p); - } - else - { - result = s; - } - pid = _getpid_r (p); - - if (worker (p, result, P_tmpdir, "t", pid, &p->_inc)) - { - p->_inc++; - return result; - } - - return NULL; -} - -char * -_DEFUN (_tempnam_r, (p, dir, pfx), - struct _reent *p _AND - _CONST char *dir _AND - _CONST char *pfx) -{ - char *filename; - int length; - _CONST char *prefix = (pfx) ? pfx : ""; - if (dir == NULL && (dir = getenv ("TMPDIR")) == NULL) - dir = P_tmpdir; - - /* two 8 digit numbers + . / */ - length = strlen (dir) + strlen (prefix) + (4 * sizeof (int)) + 2 + 1; - - filename = _malloc_r (p, length); - if (filename) - { - if (! worker (p, filename, dir, prefix, - _getpid_r (p) ^ (int) (_POINTER_INT) p, &p->_inc)) - return NULL; - } - return filename; -} - -#ifndef _REENT_ONLY - -char * -_DEFUN (tempnam, (dir, pfx), - _CONST char *dir _AND - _CONST char *pfx) -{ - return _tempnam_r (_REENT, dir, pfx); -} - -char * -_DEFUN (tmpnam, (s), - char *s) -{ - return _tmpnam_r (_REENT, s); -} - -#endif |