Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1297070
| From | Mickaël Salaün <mic@digikod.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v5 2/2] um: Use race-free temporary file creation |
| Date | 2015-12-22 22:30 +0100 |
| Message-ID | <qICFj-JT-7@gated-at.bofh.it> (permalink) |
| References | <qICFj-JT-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Open the memory mapped file with the O_TMPFILE flag when available. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Acked-by: Tristan Schmelcher <tschmelcher@google.com> --- arch/um/os-Linux/mem.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index 840d573f7e38..8b1767668515 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -106,6 +106,17 @@ static int __init make_tempfile(const char *template) } } +#ifdef O_TMPFILE + fd = open(tempdir, O_CLOEXEC | O_RDWR | O_EXCL | O_TMPFILE, 0700); + /* + * If the running system does not support O_TMPFILE flag then retry + * without it. + */ + if (fd != -1 || (errno != EINVAL && errno != EISDIR && + errno != EOPNOTSUPP)) + return fd; +#endif + tempname = malloc(strlen(tempdir) + strlen(template) + 1); if (tempname == NULL) return -1; -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next | Find similar | Unroll thread
[PATCH v5 2/2] um: Use race-free temporary file creation Mickaël Salaün <mic@digikod.net> - 2015-12-22 22:30 +0100
csiph-web