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[PATCH v2 13/19] hw/9pfs: Update v9fs_set_fd_limit() for Windows
From: |
Bin Meng |
Subject: |
[PATCH v2 13/19] hw/9pfs: Update v9fs_set_fd_limit() for Windows |
Date: |
Fri, 11 Nov 2022 12:22:19 +0800 |
From: Guohuai Shi <guohuai.shi@windriver.com>
Use _getmaxstdio() to set the fd limit on Windows.
Signed-off-by: Guohuai Shi <guohuai.shi@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
---
Changes in v2:
- new patch: "hw/9pfs: Update v9fs_set_fd_limit() for Windows"
hw/9pfs/9p.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 0b5e1fa8d2..be1d2a4f04 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -4392,11 +4392,28 @@ void v9fs_reset(V9fsState *s)
static void __attribute__((__constructor__)) v9fs_set_fd_limit(void)
{
+ int rlim_cur;
+ int ret;
+
+#ifndef CONFIG_WIN32
struct rlimit rlim;
- if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) {
+ ret = getrlimit(RLIMIT_NOFILE, &rlim);
+ rlim_cur = rlim.rlim_cur;
+#else
+ /*
+ * On Windows host, _getmaxstdio() actually returns the number of max
+ * open files at the stdio level. It *may* be smaller than the number
+ * of open files by open() or CreateFile().
+ */
+ ret = _getmaxstdio();
+ rlim_cur = ret;
+#endif
+
+ if (ret < 0) {
error_report("Failed to get the resource limit");
exit(1);
}
- open_fd_hw = rlim.rlim_cur - MIN(400, rlim.rlim_cur / 3);
- open_fd_rc = rlim.rlim_cur / 2;
+
+ open_fd_hw = rlim_cur - MIN(400, rlim_cur / 3);
+ open_fd_rc = rlim_cur / 2;
}
--
2.25.1
- Re: [PATCH v2 05/19] hw/9pfs: Update 9pfs to use the new QemuFd_t type, (continued)
[PATCH v2 08/19] hw/9pfs: Update the local fs driver to support Windows, Bin Meng, 2022/11/10
[PATCH v2 07/19] hw/9pfs: Implement Windows specific utilities functions for 9pfs, Bin Meng, 2022/11/10
[PATCH v2 01/19] qemu/xattr.h: Exclude <sys/xattr.h> for Windows, Bin Meng, 2022/11/10
[PATCH v2 10/19] hw/9pfs: Add a helper qemu_stat_rdev(), Bin Meng, 2022/11/10
[PATCH v2 09/19] hw/9pfs: Support getting current directory offset for Windows, Bin Meng, 2022/11/10
[PATCH v2 11/19] hw/9pfs: Add a helper qemu_stat_blksize(), Bin Meng, 2022/11/10
[PATCH v2 13/19] hw/9pfs: Update v9fs_set_fd_limit() for Windows,
Bin Meng <=
[PATCH v2 12/19] hw/9pfs: Disable unsupported flags and features for Windows, Bin Meng, 2022/11/10
[PATCH v2 18/19] tests/qtest: virtio-9p-test: Adapt the case for win32, Bin Meng, 2022/11/10
[PATCH v2 14/19] hw/9pfs: Add Linux error number definition, Bin Meng, 2022/11/10
[PATCH v2 15/19] hw/9pfs: Translate Windows errno to Linux value, Bin Meng, 2022/11/10
[PATCH v2 17/19] hw/9pfs: Update synth fs driver for Windows, Bin Meng, 2022/11/10
[PATCH v2 16/19] fsdev: Disable proxy fs driver on Windows, Bin Meng, 2022/11/10
[PATCH v2 19/19] meson.build: Turn on virtfs for Windows, Bin Meng, 2022/11/10