From 91fbc6ea1f1475d5b4cc2eef0c5a5b9b2bfd186f Mon Sep 17 00:00:00 2001 From: Mohammed Rafi KC Date: Wed, 3 May 2017 17:19:57 +0530 Subject: gfapi: fix handling of dot and double dot in path This patch is to handle "." and ".." in file path. Which means this special dentry names will be resolved before sending fops on the path. Backport of> >Change-Id: I5e92f6d1ad1412bf432eb2488e53fb7731edb013 >BUG: 1447266 >Signed-off-by: Mohammed Rafi KC >Reviewed-on: https://review.gluster.org/17177 >Smoke: Gluster Build System >Reviewed-by: Niels de Vos >CentOS-regression: Gluster Build System >NetBSD-regression: NetBSD Build System >Reviewed-by: Jeff Darcy Change-Id: I5e92f6d1ad1412bf432eb2488e53fb7731edb013 BUG: 1463528 Signed-off-by: Mohammed Rafi KC Reviewed-on: https://review.gluster.org/17237 Smoke: Gluster Build System Tested-by: Shyamsundar Ranganathan CentOS-regression: Gluster Build System Reviewed-by: Shyamsundar Ranganathan --- api/src/glfs-resolve.c | 41 +++++++++++++++++------------------------ 1 file changed, 17 insertions(+), 24 deletions(-) (limited to 'api/src') diff --git a/api/src/glfs-resolve.c b/api/src/glfs-resolve.c index d495cd21413..a2be87f1c1e 100644 --- a/api/src/glfs-resolve.c +++ b/api/src/glfs-resolve.c @@ -25,12 +25,10 @@ #include "syncop.h" #include "call-stub.h" #include "gfapi-messages.h" - +#include "inode.h" #include "glfs-internal.h" #define graphid_str(subvol) (uuid_utoa((unsigned char *)subvol->graph->graph_uuid)) - - int glfs_first_lookup_safe (xlator_t *subvol) { @@ -251,33 +249,26 @@ glfs_resolve_component (struct glfs *fs, xlator_t *subvol, inode_t *parent, loc.parent = inode_ref (parent); gf_uuid_copy (loc.pargfid, parent->gfid); - /* /.. and /. should point back to / - we lookup using inode and gfid of root - Fill loc.name so that we make use md-cache. - md-cache is not valid for nameless lookups. - */ + /* At this point we should never have '.' or ".." in path */ if (__is_root_gfid (parent->gfid) && - (strcmp (component, "..") == 0)) { - loc.inode = inode_ref (parent); - loc.name = "."; - } else { - if (strcmp (component, ".") == 0) - loc.inode = inode_ref (parent); - else if (strcmp (component, "..") == 0) - loc.inode = inode_parent (parent, 0, 0); - else - loc.inode = inode_grep (parent->table, parent, - component); + (strcmp (component, "/") == 0)) { + if (!force_lookup) { + inode = inode_ref (parent); + } else { + ret = glfs_resolve_base (fs, subvol, parent, &ciatt); + if (!ret) + inode = inode_ref (parent); + } + goto found; } - + loc.inode = inode_grep (parent->table, parent, component); if (loc.inode) { gf_uuid_copy (loc.gfid, loc.inode->gfid); reval = 1; if (!(force_lookup || inode_needs_lookup (loc.inode, THIS))) { inode = inode_ref (loc.inode); - ciatt.ia_type = inode->ia_type; goto found; } } else { @@ -357,8 +348,10 @@ glfs_resolve_component (struct glfs *fs, xlator_t *subvol, inode_t *parent, } else if (inode == loc.inode) inode_ctx_set (inode, THIS, &ctx_value); found: - if (inode) + if (inode) { + ciatt.ia_type = inode->ia_type; inode_lookup (inode); + } if (iatt) *iatt = ciatt; out: @@ -384,6 +377,7 @@ priv_glfs_resolve_at (struct glfs *fs, xlator_t *subvol, inode_t *at, char *next_component = NULL; int ret = -1; struct iatt ciatt = {0, }; + char dentry_name[PATH_MAX] = {0, }; DECLARE_OLD_THIS; __GLFS_ENTRY_VALIDATE_FS(fs, invalid_fs); @@ -414,9 +408,8 @@ priv_glfs_resolve_at (struct glfs *fs, xlator_t *subvol, inode_t *at, if (parent) inode_unref (parent); - parent = inode; - + glusterfs_normalize_dentry (&parent, &component, dentry_name); inode = glfs_resolve_component (fs, subvol, parent, component, &ciatt, /* force hard lookup on the last -- cgit