On 2016/10/1 0:25, Jaegeuk Kim wrote: > On Thu, Sep 29, 2016 at 06:38:37PM +0800, Junling Zheng wrote: >> Currently, versions in f2fs_configuration have one more byte, so versions >> in f2fs_super_block may not end with '\0', which will cause errors while >> printing it in print_raw_sb_info(). Unify the length of versions to fix it. > > This is to handle non-zero terminated version characters in f2fs_super_block. > What is your point? > > Thanks, >
If version characters are non-zero terminated in f2fs_super_block, it will get incorrect results while printing it in print_raw_sb_info(): ... DISP("%s", sb, version); ... Thanks, Junling >> >> Signed-off-by: Junling Zheng <zhengjunl...@huawei.com> >> --- >> include/f2fs_fs.h | 6 +++--- >> lib/libf2fs.c | 4 ++-- >> 2 files changed, 5 insertions(+), 5 deletions(-) >> >> diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h >> index 1345e2d..e666076 100644 >> --- a/include/f2fs_fs.h >> +++ b/include/f2fs_fs.h >> @@ -270,9 +270,9 @@ struct f2fs_configuration { >> u_int64_t target_sectors; >> u_int32_t sectors_per_blk; >> u_int32_t blks_per_seg; >> - __u8 init_version[VERSION_LEN + 1]; >> - __u8 sb_version[VERSION_LEN + 1]; >> - __u8 version[VERSION_LEN + 1]; >> + __u8 init_version[VERSION_LEN]; >> + __u8 sb_version[VERSION_LEN]; >> + __u8 version[VERSION_LEN]; >> char *vol_label; >> int heap; >> int32_t fd, kd; >> diff --git a/lib/libf2fs.c b/lib/libf2fs.c >> index 706cc34..0a9436b 100644 >> --- a/lib/libf2fs.c >> +++ b/lib/libf2fs.c >> @@ -570,11 +570,11 @@ int f2fs_dev_is_umounted(struct f2fs_configuration *c) >> void get_kernel_version(__u8 *version) >> { >> int i; >> - for (i = 0; i < VERSION_LEN; i++) { >> + for (i = 0; i < VERSION_LEN - 1; i++) { >> if (version[i] == '\n') >> break; >> } >> - memset(version + i, 0, VERSION_LEN + 1 - i); >> + memset(version + i, 0, VERSION_LEN - i); >> } >> >> int f2fs_get_device_info(struct f2fs_configuration *c) >> -- >> 2.7.4 >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Linux-f2fs-devel mailing list >> Linux-f2fs-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel > > . > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel