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[PATCH v5 2/8] util: split off a helper for dealing with O_CLOEXEC flag
From: |
Daniel P . Berrangé |
Subject: |
[PATCH v5 2/8] util: split off a helper for dealing with O_CLOEXEC flag |
Date: |
Wed, 2 Sep 2020 18:09:07 +0100 |
We're going to have multiple callers to open() from qemu_open()
soon. Readability would thus benefit from having a helper for
dealing with O_CLOEXEC.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
util/osdep.c | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/util/osdep.c b/util/osdep.c
index 3d94b4d732..0d8fa9f016 100644
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -279,6 +279,20 @@ int qemu_lock_fd_test(int fd, int64_t start, int64_t len,
bool exclusive)
}
#endif
+static int qemu_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;
+}
+
/*
* Opens a file with FD_CLOEXEC set
*/
@@ -318,14 +332,7 @@ int qemu_open(const char *name, int flags, ...)
va_end(ap);
}
-#ifdef O_CLOEXEC
- ret = open(name, flags | O_CLOEXEC, mode);
-#else
- ret = open(name, flags, mode);
- if (ret >= 0) {
- qemu_set_cloexec(ret);
- }
-#endif
+ ret = qemu_open_cloexec(name, flags, mode);
#ifdef O_DIRECT
if (ret == -1 && errno == EINVAL && (flags & O_DIRECT)) {
--
2.26.2
- [PATCH v5 0/8] block: improve error reporting for unsupported O_DIRECT, Daniel P . Berrangé, 2020/09/02
- [PATCH v5 1/8] monitor: simplify functions for getting a dup'd fdset entry, Daniel P . Berrangé, 2020/09/02
- [PATCH v5 2/8] util: split off a helper for dealing with O_CLOEXEC flag,
Daniel P . Berrangé <=
- [PATCH v5 3/8] util: rename qemu_open() to qemu_open_old(), Daniel P . Berrangé, 2020/09/02
- [PATCH v5 4/8] util: refactor qemu_open_old to split off variadic args handling, Daniel P . Berrangé, 2020/09/02
- [PATCH v5 5/8] util: add Error object for qemu_open_internal error reporting, Daniel P . Berrangé, 2020/09/02
- [PATCH v5 6/8] util: introduce qemu_open and qemu_create with error reporting, Daniel P . Berrangé, 2020/09/02
- [PATCH v5 7/8] util: give a specific error message when O_DIRECT doesn't work, Daniel P . Berrangé, 2020/09/02