xemu/qga/cutils.c
Marc-André Lureau 0edbfbe31c 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>
2022-05-28 11:42:56 +02:00

34 lines
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C

/*
* 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;
}