On Thu, 2013-09-05 at 09:10 +0200, Stefan Behrens wrote:
> On Thu, 05 Sep 2013 09:00:07 +0200, Stefan Behrens wrote:
> > On Thu, 5 Sep 2013 10:38:58 +0800, Gui Hecheng wrote:
> >> The strdup()s not freed are reported as memory leaks by valgrind.
> >>
> >> Signed-off-by: Gui Hecheng <[email protected]>
> >> ---
> >> cmds-subvolume.c | 48 ++++++++++++++++++++++++++++++++++--------------
> >> 1 file changed, 34 insertions(+), 14 deletions(-)
>
> Just noticed that you had already sent a V2 with the things fixed that I
> have commented, but you sent the 5/5 as a 1/5 and added the changelog
> v1->v2 "none" which made it difficult to recognize :). But maybe David
> Sterba is smart enough when he picks up the patches.
Thank you for your friendly advice. I will handle it snow.
> >>
> >> diff --git a/cmds-subvolume.c b/cmds-subvolume.c
> >> index e1fa81a..51c529c 100644
> >> --- a/cmds-subvolume.c
> >> +++ b/cmds-subvolume.c
> [...]
>
> >> @@ -75,6 +75,8 @@ static int cmd_subvol_create(int argc, char **argv)
> >> {
> >> int retval, res, len;
> >> int fddst = -1;
> >> + char *dupname = NULL;
> >> + char *dupdir = NULL;
> >> char *newname;
> >> char *dstdir;
> >> char *dst;
> >> @@ -119,10 +121,10 @@ static int cmd_subvol_create(int argc, char **argv)
> >> goto out;
> >> }
> >>
> >> - newname = strdup(dst);
> >> - newname = basename(newname);
> >> - dstdir = strdup(dst);
> >> - dstdir = dirname(dstdir);
> >> + dupname = strdup(dst);
> >> + newname = basename(dupname);
> >> + dupdir = strdup(dst);
> >> + dstdir = dirname(dupdir);
> >>
> >> if (!strcmp(newname, ".") || !strcmp(newname, "..") ||
> >> strchr(newname, '/') ){
> >> @@ -175,6 +177,11 @@ out:
> >> close_file_or_dir(fddst, dirstream);
> >> free(inherit);
> >>
> >> + if (dupname != NULL)
> >> + free(dupname);
> >> + if (dupdir != NULL)
> >> + free(dupdir);
> >> +
> >
> > free(3) already checks the pointer for NULL, no need to do it on your own.
> >
> >
> >> return retval;
> >> }
> >>
> >> @@ -208,6 +215,8 @@ static int cmd_subvol_delete(int argc, char **argv)
> >> int res, fd, len, e, cnt = 1, ret = 0;
> >> struct btrfs_ioctl_vol_args args;
> >> char *dname, *vname, *cpath;
> >> + char *dupdname = NULL;
> >> + char *dupvname = NULL;
> >> char *path;
> >> DIR *dirstream = NULL;
> >>
> >> @@ -230,10 +239,10 @@ again:
> >> }
> >>
> >> cpath = realpath(path, NULL);
> >> - dname = strdup(cpath);
> >> - dname = dirname(dname);
> >> - vname = strdup(cpath);
> >> - vname = basename(vname);
> >> + dupdname = strdup(cpath);
> >> + dname = dirname(dupdname);
> >> + dupvname = strdup(cpath);
> >> + vname = basename(dupvname);
> >> free(cpath);
> >>
> >> if( !strcmp(vname,".") || !strcmp(vname,"..") ||
> >> @@ -274,6 +283,10 @@ again:
> >> }
> >>
> >> out:
> >> + if (dupdname != NULL)
> >> + free(dupdname);
> >> + if (dupvname != NULL)
> >> + free(dupvname);
> >
> > Here again.
> >
> >
> >> cnt++;
> >> if (cnt < argc)
> >> goto again;
> >> @@ -495,6 +508,8 @@ static int cmd_snapshot(int argc, char **argv)
> >> int res, retval;
> >> int fd = -1, fddst = -1;
> >> int len, readonly = 0;
> >> + char *dupname = NULL;
> >> + char *dupdir = NULL;
> >> char *newname;
> >> char *dstdir;
> >> struct btrfs_ioctl_vol_args_v2 args;
> >> @@ -562,14 +577,14 @@ static int cmd_snapshot(int argc, char **argv)
> >> }
> >>
> >> if (res > 0) {
> >> - newname = strdup(subvol);
> >> - newname = basename(newname);
> >> + dupname = strdup(subvol);
> >> + newname = basename(dupname);
> >> dstdir = dst;
> >> } else {
> >> - newname = strdup(dst);
> >> - newname = basename(newname);
> >> - dstdir = strdup(dst);
> >> - dstdir = dirname(dstdir);
> >> + dupname = strdup(dst);
> >> + newname = basename(dupname);
> >> + dupdir = strdup(dst);
> >> + dstdir = dirname(dupdir);
> >> }
> >>
> >> if (!strcmp(newname, ".") || !strcmp(newname, "..") ||
> >> @@ -630,6 +645,11 @@ out:
> >> close_file_or_dir(fd, dirstream2);
> >> free(inherit);
> >>
> >> + if (dupname != NULL)
> >> + free(dupname);
> >> + if (dupdir != NULL)
> >> + free(dupdir);
> >> +
> >
> > And here.
> >
> >
> >> return retval;
> >> }
>
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