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MDEV-26601: mysys - O_TMPFILE ^ O_CREAT

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Thanks to Fabian Vogt for noticing the mutual exclusions
of these open flags on tmpfs caused by mariadb opening it
incorrectly.

As such we clear the O_CREAT flag while opening it as O_TMPFILE.
This commit is contained in:
Daniel Black 2021-09-14 19:07:49 +10:00
parent 5527fc5861
commit adaf0dde7f
1 changed files with 1 additions and 1 deletions
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mysys/mf_tempfile.c
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@ -121,7 +121,7 @@ File create_temp_file(char *to, const char *dir, const char *prefix,
/* explictly don't use O_EXCL here has it has a different /* explictly don't use O_EXCL here has it has a different
meaning with O_TMPFILE meaning with O_TMPFILE
*/ */
if ((file= open(dir, mode | O_TMPFILE | O_CLOEXEC, if ((file= open(dir, (mode & ~O_CREAT) | O_TMPFILE | O_CLOEXEC,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP)) >= 0) S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP)) >= 0)
{ {
my_snprintf(to, FN_REFLEN, "%s/#sql/fd=%d", dir, file); my_snprintf(to, FN_REFLEN, "%s/#sql/fd=%d", dir, file);