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[Qemu-block] [PATCH v3 09/27] osdep: Introduce qemu_dup
From: |
Fam Zheng |
Subject: |
[Qemu-block] [PATCH v3 09/27] osdep: Introduce qemu_dup |
Date: |
Thu, 28 Apr 2016 20:57:28 +0800 |
This takes care both the CLOEXEC flag and fd-path mapping for image
locking.
Signed-off-by: Fam Zheng <address@hidden>
---
include/qemu/osdep.h | 1 +
util/osdep.c | 15 +++++++++++++++
2 files changed, 16 insertions(+)
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 089c13f..8174902 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -251,6 +251,7 @@ int qemu_madvise(void *addr, size_t len, int advice);
int qemu_open(const char *name, int flags, ...);
int qemu_close(int fd);
+int qemu_dup(int fd);
int qemu_lock_fd(int fd, int64_t start, int64_t len, bool readonly);
int qemu_unlock_fd(int fd, int64_t start, int64_t len);
diff --git a/util/osdep.c b/util/osdep.c
index 1510cbf..66c993a 100644
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -408,6 +408,21 @@ int qemu_close(int fd)
return qemu_fd_close(fd);
}
+int qemu_dup(int fd)
+{
+ char *path;
+ int ret = qemu_dup_flags(fd, 0);
+ if (ret == -1) {
+ return ret;
+ }
+
+ path = g_hash_table_lookup(fd_to_path, GINT_TO_POINTER(fd));
+ assert(path);
+ qemu_fd_add_record(ret, path);
+ return ret;
+}
+
+
/*
* A variant of write(2) which handles partial write.
*
--
2.8.0
- [Qemu-block] [PATCH v3 00/27] block: Lock images when opening, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 01/27] block: Add BDRV_O_NO_LOCK, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 03/27] blockdev: Add and parse "lock-image" option for block devices, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 02/27] qapi: Add lock-image in blockdev-add options, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 04/27] block: Introduce image file locking, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 05/27] block: Add bdrv_image_locked, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 06/27] block: Make bdrv_reopen_{commit, abort} private functions, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 07/27] block: Handle image locking during reopen, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 08/27] osdep: Add qemu_lock_fd and qemu_unlock_fd, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 09/27] osdep: Introduce qemu_dup,
Fam Zheng <=
- [Qemu-block] [PATCH v3 10/27] raw-posix: Use qemu_dup, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 11/27] raw-posix: Implement .bdrv_lockf, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 12/27] gluster: Implement .bdrv_lockf, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 14/27] qemu-img: Add "-L" option to sub commands, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 13/27] qemu-io: Add "-L" option for BDRV_O_NO_LOCK, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 15/27] qemu-img: Update documentation of "-L" option, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 16/27] qemu-nbd: Add "--no-lock/-L" option, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 17/27] block: Don't lock drive-backup target image in none mode, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 19/27] qemu-iotests: 140: Disable image lock for qemu-io access, Fam Zheng, 2016/04/28
- [Qemu-block] [PATCH v3 18/27] mirror: Disable image locking on target backing chain, Fam Zheng, 2016/04/28