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* fix (deprecated) mktemp logic and update it to match other temp functionsRich Felker2013-08-021-4/+11
| | | | | | | | the access function cannot be used to check for existence, because it operates using real uid/gid rather than effective to determine accessibility; this matters for the non-final path components. instead, use stat. failure of stat is success if only the final component is missing (ENOENT) and otherwise is failure.
* remove (no longer useful) namespace-protected __mktemp symbolRich Felker2013-08-021-4/+1
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* make mkdtemp and mkstemp family leave template unchanged on failRich Felker2013-08-022-13/+18
| | | | | | also refactor mkdtemp based on new shared temp code, removing dependency on the deprecated mktemp, whose behavior made this logic more difficult.
* use memcmp instead of str[n]cmp for temp function XXXXXX checkingRich Felker2013-02-202-2/+2
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* fix error cases in mkostemps coreRich Felker2013-02-201-6/+3
| | | | | | 1. wrong return value and missing errno for negative suffix len 2. failure to catch suffix len > strlen 3. remove unwanted clearing of input string in invalid case
* remove leftover unused variable in mktemp after refactoringRich Felker2013-02-201-1/+0
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* add mkostemp, mkstemps, and mkostemps functions and reorganize temp internalsRich Felker2013-02-206-29/+83
| | | | | | | | | based on patch contributed by Anthony G. Basile (blueness) some issues remain with the filename generation algorithm and other small bugs, but this patch has been sitting around long enough that I feel it's best to get it committed and then work out any remaining issues.
* remove ugly prng from mk*temp and just re-poll time on retryRich Felker2011-07-281-6/+5
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* eliminate mk*temp dependency on snprintfRich Felker2011-07-281-3/+4
| | | | | this helps some tiny programs be even more tiny, and barly increases code size even if both are used.
* another return value fix for mktemp...Rich Felker2011-06-121-1/+2
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* make mktemp match the historic behavior, and update functions that use itRich Felker2011-02-193-5/+8
| | | | | | the historic mktemp is supposed to blank the template string on failure, rather than returning 0. just zero the first character so that mkstemp and mkdtemp can still retry with O(1) space requirement.
* fix major bug created from copying mkdtemp logicRich Felker2011-02-191-1/+1
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* major improvements to temp file name generatorRich Felker2011-02-183-16/+21
| | | | | | | | use current time in nanoseconds and some potentially-random (if aslr is enabled) pointer values for the initial tempfile name generation, and step via a cheap linear prng on collisions. limit the number of retry attempts to prevent denial of service attacks even if an attacker can guess the filenames.
* reformat mkstemp like mkdtempRich Felker2011-02-181-7/+5
| | | | | this is cleaner and makes it easy to impose a limit on the number of retries later if it seems desirable to do so.
* ensure standard functions mk[sd]temp don't depend on removed function mktempRich Felker2011-02-143-5/+9
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* begin namespace-cleanup of standard C headersRich Felker2011-02-142-0/+2
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-123-0/+76