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* src/posixos.c (os_anontmp): If O_TMPFILE fails try dup() method.

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This commit is contained in:
Dmitry Goncharov 2022-10-23 15:45:42 -04:00 committed by Paul Smith
parent 6f8da5f4b8
commit 252c26bd20
1 changed files with 13 additions and 8 deletions
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21
src/posixos.c
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@ -839,17 +839,22 @@ fd_set_append (int fd)
int
os_anontmp ()
{
const char *tdir = get_tmpdir ();
int fd = -1;
#ifdef O_TMPFILE
EINTRLOOP (fd, open (get_tmpdir (), O_RDWR | O_TMPFILE | O_EXCL, 0600));
if (fd < 0)
pfatal_with_name ("open(O_TMPFILE)");
#elif HAVE_DUP
/* We don't have O_TMPFILE but we can dup: if we are creating temp files in
the default location then try tmpfile() + dup() + fclose() to avoid ever
having a name for a file. */
if (streq (get_tmpdir (), DEFAULT_TMPDIR))
EINTRLOOP (fd, open (tdir, O_RDWR | O_TMPFILE | O_EXCL, 0600));
if (fd >= 0)
return fd;
DB (DB_BASIC, (_("Cannot open '%s' with O_TMPFILE: %s.\n"),
tdir, strerror (errno)));
#endif
#if HAVE_DUP
/* If we can dup and we are creating temp files in the default location then
try tmpfile() + dup() + fclose() to avoid ever having a named file. */
if (streq (tdir, DEFAULT_TMPDIR))
{
mode_t mask = umask (0077);
FILE *tfile;