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* ignore access mode bits of flags in mkostemps and functions that use itRich Felker2014-10-061-0/+1
| | | | | | | | | | | | | per the text accepted for inclusion in POSIX, behavior is unspecified when any of the access mode bits are set. since it's impossible to consistently report this usage error (O_RDONLY could not be detected since its value happens to be zero), the most consistent way to handle them is just to ignore them. previously, if a caller erroneously passed O_WRONLY, the resulting access mode would be O_WRONLY|O_RDWR, which has the value 3, and this resulted in a file descriptor which rejects both read and write attempts when it is subsequently used.
* make mkdtemp and mkstemp family leave template unchanged on failRich Felker2013-08-021-3/+4
| | | | | | 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 Felker2013-02-201-1/+1
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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
* add mkostemp, mkstemps, and mkostemps functions and reorganize temp internalsRich Felker2013-02-201-0/+32
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.