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author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2022-05-25 16:41:30 +0200 |
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committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2022-05-28 11:42:56 +0200 |
commit | 0edbfbe31c532a98a8674b68c94a97537f4e4230 (patch) | |
tree | 720f1315c8e9ee3e21b30dd35514b04dd8adca9c /qga/cutils.c | |
parent | 69f56c140de06fee0f266b93634475e1d968e430 (diff) | |
download | qemu-0edbfbe31c532a98a8674b68c94a97537f4e4230.zip qemu-0edbfbe31c532a98a8674b68c94a97537f4e4230.tar.gz qemu-0edbfbe31c532a98a8674b68c94a97537f4e4230.tar.bz2 |
qga: add qga_open_cloexec() helper
QGA calls qemu_open_old() in various places. Calling qemu_open() instead
isn't a great alternative, as it has special "/dev/fdset" handling and
depends on QEMU internal monitor data structures.
Instead, provide a simple helper for QGA needs, with Error* support. The
following patches will make use of it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220525144140.591926-6-marcandre.lureau@redhat.com>
Diffstat (limited to 'qga/cutils.c')
-rw-r--r-- | qga/cutils.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/qga/cutils.c b/qga/cutils.c new file mode 100644 index 0000000..b8e142e --- /dev/null +++ b/qga/cutils.c @@ -0,0 +1,33 @@ +/* + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "cutils.h" + +#include "qapi/error.h" + +/** + * qga_open_cloexec: + * @name: the pathname to open + * @flags: as in open() + * @mode: as in open() + * + * A wrapper for open() function which sets O_CLOEXEC. + * + * On error, -1 is returned. + */ +int qga_open_cloexec(const char *name, int flags, mode_t mode) +{ + int ret; + +#ifdef O_CLOEXEC + ret = open(name, flags | O_CLOEXEC, mode); +#else + ret = open(name, flags, mode); + if (ret >= 0) { + qemu_set_cloexec(ret); + } +#endif + + return ret; +} |