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Diffstat (limited to 'newlib/libc/stdio/mktemp.c')
| -rw-r--r-- | newlib/libc/stdio/mktemp.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/newlib/libc/stdio/mktemp.c b/newlib/libc/stdio/mktemp.c deleted file mode 100644 index 54c7a97..0000000 --- a/newlib/libc/stdio/mktemp.c +++ /dev/null @@ -1,221 +0,0 @@ -/* This is file MKTEMP.C */ -/* This file may have been modified by DJ Delorie (Jan 1991). If so, -** these modifications are Coyright (C) 1991 DJ Delorie, 24 Kirsten Ave, -** Rochester NH, 03867-2954, USA. -*/ - -/* - * Copyright (c) 1987 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that: (1) source distributions retain this entire copyright - * notice and comment, and (2) distributions including binaries display - * the following acknowledgement: ``This product includes software - * developed by the University of California, Berkeley and its contributors'' - * in the documentation or other materials provided with the distribution - * and in all advertising materials mentioning features or use of this - * software. Neither the name of the University nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* -FUNCTION -<<mktemp>>, <<mkstemp>>---generate unused file name - -INDEX - mktemp -INDEX - mkstemp -INDEX - _mktemp_r -INDEX - _mkstemp_r - -ANSI_SYNOPSIS - #include <stdio.h> - char *mktemp(char *<[path]>); - int mkstemp(char *<[path]>); - - char *_mktemp_r(void *<[reent]>, char *<[path]>); - int *_mkstemp_r(void *<[reent]>, char *<[path]>); - -TRAD_SYNOPSIS - #include <stdio.h> - char *mktemp(<[path]>) - char *<[path]>; - - int mkstemp(<[path]>) - char *<[path]>; - - char *_mktemp_r(<[reent]>, <[path]>) - char *<[reent]>; - char *<[path]>; - - int _mkstemp_r(<[reent]>, <[path]>) - char *<[reent]>; - char *<[path]>; - -DESCRIPTION -<<mktemp>> and <<mkstemp>> attempt to generate a file name that is not -yet in use for any existing file. <<mkstemp>> creates the file and -opens it for reading and writing; <<mktemp>> simply generates the file name. - -You supply a simple pattern for the generated file name, as the string -at <[path]>. The pattern should be a valid filename (including path -information if you wish) ending with some number of `<<X>>' -characters. The generated filename will match the leading part of the -name you supply, with the trailing `<<X>>' characters replaced by some -combination of digits and letters. - -The alternate functions <<_mktemp_r>> and <<_mkstemp_r>> are reentrant -versions. The extra argument <[reent]> is a pointer to a reentrancy -structure. - -RETURNS -<<mktemp>> returns the pointer <[path]> to the modified string -representing an unused filename, unless it could not generate one, or -the pattern you provided is not suitable for a filename; in that case, -it returns <<NULL>>. - -<<mkstemp>> returns a file descriptor to the newly created file, -unless it could not generate an unused filename, or the pattern you -provided is not suitable for a filename; in that case, it returns -<<-1>>. - -PORTABILITY -ANSI C does not require either <<mktemp>> or <<mkstemp>>; the System -V Interface Definition requires <<mktemp>> as of Issue 2. - -Supporting OS subroutines required: <<getpid>>, <<open>>, <<stat>>. -*/ - -#include <sys/types.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <errno.h> -#include <stdio.h> -#include <ctype.h> -#include <reent.h> - -static int -_DEFUN (_gettemp, (ptr, path, doopen), - struct _reent *ptr _AND - char *path _AND - register int *doopen) -{ - register char *start, *trv; - struct stat sbuf; - unsigned int pid; - - pid = _getpid_r (ptr); - for (trv = path; *trv; ++trv) /* extra X's get set to 0's */ - continue; - while (*--trv == 'X') - { - *trv = (pid % 10) + '0'; - pid /= 10; - } - - /* - * Check the target directory; if you have six X's and it - * doesn't exist this runs for a *very* long time. - */ - - for (start = trv + 1;; --trv) - { - if (trv <= path) - break; - if (*trv == '/') - { - *trv = '\0'; - if (_stat_r (ptr, path, &sbuf)) - return (0); - if (!(sbuf.st_mode & S_IFDIR)) - { - ptr->_errno = ENOTDIR; - return (0); - } - *trv = '/'; - break; - } - } - - for (;;) - { - if (doopen) - { - if ((*doopen = _open_r (ptr, path, O_CREAT | O_EXCL | O_RDWR, 0600)) - >= 0) - return 1; -#if defined(__CYGWIN32__) || defined(__CYGWIN__) - if (ptr->_errno != EEXIST && ptr->_errno != EACCES) -#else - if (ptr->_errno != EEXIST) -#endif - return 0; - } - else if (_stat_r (ptr, path, &sbuf)) - return (ptr->_errno == ENOENT ? 1 : 0); - - /* tricky little algorithm for backward compatibility */ - for (trv = start;;) - { - if (!*trv) - return 0; - if (*trv == 'z') - *trv++ = 'a'; - else - { - if (isdigit (*trv)) - *trv = 'a'; - else - ++ * trv; - break; - } - } - } - /*NOTREACHED*/ -} - -int -_DEFUN (_mkstemp_r, (ptr, path), - struct _reent *ptr _AND - char *path) -{ - int fd; - - return (_gettemp (ptr, path, &fd) ? fd : -1); -} - -char * -_DEFUN (_mktemp_r, (ptr, path), - struct _reent *ptr _AND - char *path) -{ - return (_gettemp (ptr, path, (int *) NULL) ? path : (char *) NULL); -} - -#ifndef _REENT_ONLY - -int -_DEFUN (mkstemp, (path), - char *path) -{ - int fd; - - return (_gettemp (_REENT, path, &fd) ? fd : -1); -} - -char * -_DEFUN (mktemp, (path), - char *path) -{ - return (_gettemp (_REENT, path, (int *) NULL) ? path : (char *) NULL); -} - -#endif /* ! defined (_REENT_ONLY) */ |