* [f2fs-dev] [PATCH] dump.f2fs: allow to dump data on mounted device
@ 2019-07-29 15:39 Chao Yu
0 siblings, 0 replies; only message in thread
From: Chao Yu @ 2019-07-29 15:39 UTC (permalink / raw)
To: jaegeuk; +Cc: linux-f2fs-devel
From: Chao Yu <yuchao0@huawei.com>
In generic/38[3456], we use quotactl(2) to check if prjquota is
enabled on the given device (src/feature -P $dev in _require_prjquota),
and quotactl(2) requires the given device is a mounted device.
So it requires dump.f2fs to list/check enabled features on a mounted
device, let's relieve to allow such operation.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
lib/libf2fs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/libf2fs.c b/lib/libf2fs.c
index 5ac07c1..7b65fa0 100644
--- a/lib/libf2fs.c
+++ b/lib/libf2fs.c
@@ -845,7 +845,7 @@ void get_kernel_uname_version(__u8 *version)
#ifndef ANDROID_WINDOWS_HOST
static int open_check_fs(char *path, int flag)
{
- if (c.func != FSCK || c.fix_on || c.auto_fix)
+ if (c.func != DUMP && (c.func != FSCK || c.fix_on || c.auto_fix))
return -1;
/* allow to open ro */
@@ -891,7 +891,7 @@ int get_device_info(int i)
return -1;
}
- if (S_ISBLK(stat_buf->st_mode) && !c.force) {
+ if (S_ISBLK(stat_buf->st_mode) && !c.force && c.func != DUMP) {
fd = open(dev->path, O_RDWR | O_EXCL);
if (fd < 0)
fd = open_check_fs(dev->path, O_EXCL);
--
2.22.0
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