[PATCH v2] erofs-utils: mkfs: fix a memory leak of compression type configuration

[Yue Hu]

Hi Xiang,

On Mon, 25 Jul 2022 13:56:38 +0800
Gao Xiang <hsiangkao at linux.alibaba.com> wrote:

> Hi Yue,
> 
> On Mon, Jul 25, 2022 at 01:45:49PM +0800, Yue Hu wrote:
> > Release the memory allocated for compression type configuration. And no
> > need to consider !optarg case since getopt_long() will do that.
> > 
> > Signed-off-by: Yue Hu <huyue2 at coolpad.com>
> > ---  
> 
> What's the difference between v1?

just fix 'configration' -> 'configuration' in summary line.

> The patch itself looks good to me, but I need to try later.
> 
> Thanks,
> Gao Xiang
> 
> >  lib/config.c | 3 +++
> >  mkfs/main.c  | 4 ----
> >  2 files changed, 3 insertions(+), 4 deletions(-)
> > 
> > diff --git a/lib/config.c b/lib/config.c
> > index 3963df2..c316a54 100644
> > --- a/lib/config.c
> > +++ b/lib/config.c
> > @@ -55,6 +55,9 @@ void erofs_exit_configure(void)
> >  #endif
> >  	if (cfg.c_img_path)
> >  		free(cfg.c_img_path);
> > +
> > +	if (cfg.c_compr_alg_master)
> > +		free(cfg.c_compr_alg_master);
> >  }
> >  
> >  static unsigned int fullpath_prefix;	/* root directory prefix length */
> > diff --git a/mkfs/main.c b/mkfs/main.c
> > index deb8e1f..9f5f1dc 100644
> > --- a/mkfs/main.c
> > +++ b/mkfs/main.c
> > @@ -212,10 +212,6 @@ static int mkfs_parse_options_cfg(int argc, char *argv[])
> >  				  long_options, NULL)) != -1) {
> >  		switch (opt) {
> >  		case 'z':
> > -			if (!optarg) {
> > -				cfg.c_compr_alg_master = "(default)";
> > -				break;
> > -			}
> >  			/* get specified compression level */
> >  			for (i = 0; optarg[i] != '\0'; ++i) {
> >  				if (optarg[i] == ',') {
> > -- 
> > 2.17.1