util: refactor qemu_open_old to split off variadic args handling
This simple refactoring prepares for future patches. The variadic args handling is split from the main bulk of the open logic. Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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util/osdep.c
30
util/osdep.c
@ -296,10 +296,10 @@ static int qemu_open_cloexec(const char *name, int flags, mode_t mode)
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/*
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* Opens a file with FD_CLOEXEC set
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*/
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int qemu_open_old(const char *name, int flags, ...)
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static int
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qemu_open_internal(const char *name, int flags, mode_t mode)
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{
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int ret;
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int mode = 0;
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#ifndef _WIN32
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const char *fdset_id_str;
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@ -324,16 +324,26 @@ int qemu_open_old(const char *name, int flags, ...)
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}
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#endif
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if (flags & O_CREAT) {
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va_list ap;
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va_start(ap, flags);
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mode = va_arg(ap, int);
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va_end(ap);
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}
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ret = qemu_open_cloexec(name, flags, mode);
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return ret;
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}
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int qemu_open_old(const char *name, int flags, ...)
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{
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va_list ap;
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mode_t mode = 0;
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int ret;
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va_start(ap, flags);
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if (flags & O_CREAT) {
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mode = va_arg(ap, int);
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}
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va_end(ap);
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ret = qemu_open_internal(name, flags, mode);
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#ifdef O_DIRECT
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if (ret == -1 && errno == EINVAL && (flags & O_DIRECT)) {
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error_report("file system may not support O_DIRECT");
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