len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-10-13 10:07:38 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Clean up a bit and get switch statement out of loop in walk_path()

Browse source 
It's nicer to look at and it obfuscated a bug where it should have
exited the loop instead of the case (you probably wouldn't observe
the effect very often).

Change-Id: I33f3c72c8bb7e11b9d418f66cf84efc3082a37b4
This commit is contained in:
Michael Sevakis 2014-09-02 15:57:18 -04:00
parent 802e0110db
commit 0a66545487
1 changed files with 33 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

73
firmware/common/file_internal.c
View file

@ -498,51 +498,44 @@ walk_path(struct pathwalk *walkp, struct pathwalk_component *compp,
if (!(compp->attr & ATTR_DIRECTORY))
return -ENOTDIR;
switch (len)
if (len >= MAX_NAME)
return -ENAMETOOLONG;
/* check for "." and ".." */
if (name[0] == '.')
{
case 1:
case 2:
/* check for "." and ".." */
if (name[0] == '.')
if (len == 1)
continue; /* is "." */
if (len == 2 && name[1] == '.')
{
if (len == 1)
break; /* is "." */
/* is ".." */
struct pathwalk_component *parentp = compp->nextp;
if (!parentp)
return WALK_RC_CONT_AT_ROOT;
if (name[1] == '.')
{
/* is ".." */
struct pathwalk_component *parentp = compp->nextp;
if (!parentp)
return WALK_RC_CONT_AT_ROOT;
compp->nextp = freep;
freep = compp;
compp = parentp;
break;
}
compp->nextp = freep;
freep = compp;
compp = parentp;
continue;
}
/* fallthrough */
default:
if (len >= MAX_NAME)
return -ENAMETOOLONG;
struct pathwalk_component *newp = freep;
if (!newp)
newp = pathwalk_comp_alloc(compp);
else
freep = freep->nextp;
newp->nextp = compp;
compp = newp;
compp->name = name;
compp->length = len;
rc = open_path_component(walkp, compp, stream);
if (rc < 0)
break;
}
struct pathwalk_component *newp = freep;
if (!newp)
newp = pathwalk_comp_alloc(compp);
else
freep = freep->nextp;
newp->nextp = compp;
compp = newp;
compp->name = name;
compp->length = len;
rc = open_path_component(walkp, compp, stream);
if (rc < 0)
break; /* return info below */
}
return walk_open_info(walkp, compp, rc, stream);