diff options
Diffstat (limited to 'meta/recipes-devtools/pseudo/files/mayunlink.patch')
| -rw-r--r-- | meta/recipes-devtools/pseudo/files/mayunlink.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-devtools/pseudo/files/mayunlink.patch b/meta/recipes-devtools/pseudo/files/mayunlink.patch new file mode 100644 index 0000000000..9d54e40dd9 --- /dev/null +++ b/meta/recipes-devtools/pseudo/files/mayunlink.patch @@ -0,0 +1,37 @@ +Some operations may call unlink() on an open fd, then call fchown/fchmod/fstat +on that fd. This would currently readd its entry to the database, which +is necessary to preserve its permissions information however since that +file will be lost when it is closed, we don't want the DB entry to persist. +Marking it as may_unlink means the code will know its likely been deleted +and ignore the entry later, giving improved behaviour that simple path +mismatch warnings. We can use an nlink of zero to detect this. + +Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> +Upstream-Status: Pending + +Index: git/pseudo.c +=================================================================== +--- git.orig/pseudo.c ++++ git/pseudo.c +@@ -1100,6 +1100,21 @@ pseudo_op(pseudo_msg_t *msg, const char + break; + } + ++ switch (msg->op) { ++ case OP_FCHOWN: /* FALLTHROUGH */ ++ case OP_FCHMOD: /* FALLTHROUGH */ ++ case OP_FSTAT: ++ if (!found_path && !found_ino && (msg->nlink == 0)) { ++ /* If nlink is 0 for an fchown/fchmod/fstat, we probably have an fd which is ++ * unlinked and we don't want to do inode/path matching against it. Marking it ++ * as may unlink gives the right hints in the database to ensure we ++ * handle correctly whilst maintaining the permissions whilst the ++ * file exists for the fd. */ ++ pdb_may_unlink_file(msg, msg->client); ++ } ++ break; ++ } ++ + op_exit: + /* in the case of an exact match, we just used the pointer + * rather than allocating space. |