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virtualfilesystem: fix bug with symlinks being ignored #27

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merged 1 commit into from
Sep 26, 2018
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virtualfilesystem: fix bug with symlinks being ignored #27

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4 changes: 2 additions & 2 deletions virtualfilesystem.c
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Original file line number Diff line number Diff line change
Expand Up @@ -218,7 +218,7 @@ int is_excluded_from_virtualfilesystem(const char *pathname, int pathlen, int dt
if (dtype != DT_REG && dtype != DT_DIR && dtype != DT_LNK)
die(_("is_excluded_from_virtualfilesystem passed unhandled dtype"));

if (dtype == DT_REG) {
if (dtype == DT_REG || dtype == DT_LNK) {
int ret = is_included_in_virtualfilesystem(pathname, pathlen);
if (ret > 0)
return 0;
Expand All @@ -227,7 +227,7 @@ int is_excluded_from_virtualfilesystem(const char *pathname, int pathlen, int dt
return ret;
}

if (dtype == DT_DIR || dtype == DT_LNK) {
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Can a link be a directory or a file? If the link can be a directory do we need to do something different?

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The code in treat_one_path() (the normal git excludes logic replaced by the virtual file system hashmap based code) treats DT_REG and DT_LNK the same. In addition, the comment in the code states "Nobody actually cares about the difference between DT_LNK and DT_REG" so I think we're ok.

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Some OSes do allow directory symlinks (MacOS at least). But seriously doubt the other layers know to maintain that difference (at the lstat() layer for example). And since Git only tracks file and file-symlinks, I'm guessing we're OK here.

if (dtype == DT_DIR) {
if (!parent_directory_hashmap.tablesize && virtual_filesystem_data.len)
initialize_parent_directory_hashmap(&parent_directory_hashmap, &virtual_filesystem_data);
if (!parent_directory_hashmap.tablesize)
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