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libfiemap_writer: test pinned file bit

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The pinned file should have NOCOW_FL flag.

Bug: 129803146
Change-Id: Idaf5bdbbdcce1c3805cd16ddb0c1c7f1df87dcfb
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
This commit is contained in:
Jaegeuk Kim 2019-03-08 11:39:51 -08:00
parent 5ccb6a5cdc
commit a9b3c3d605
1 changed files with 17 additions and 1 deletions
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18
fs_mgr/libfiemap_writer/fiemap_writer.cpp
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@ -407,9 +407,25 @@ static bool IsFilePinned(int file_fd, const std::string& file_path, uint32_t fs_
#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
#endif
// f2fs: export FS_NOCOW_FL flag to user
uint32_t flags;
int error = ioctl(file_fd, FS_IOC_GETFLAGS, &flags);
if (error < 0) {
if ((errno == ENOTTY) || (errno == ENOTSUP)) {
PLOG(ERROR) << "Failed to get flags, not supported by kernel: " << file_path;
} else {
PLOG(ERROR) << "Failed to get flags: " << file_path;
}
return false;
}
if (!(flags & FS_NOCOW_FL)) {
LOG(ERROR) << "It is not pinned: " << file_path;
return false;
}
// F2FS_IOC_GET_PIN_FILE returns the number of blocks moved.
uint32_t moved_blocks_nr;
int error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);
error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);
if (error < 0) {
if ((errno == ENOTTY) || (errno == ENOTSUP)) {
PLOG(ERROR) << "Failed to get file pin status, not supported by kernel: " << file_path;