posix: remove not supported get/set content

getting and setting a file's content using extended
attribute worked great as a GET/PUT alternative when
an object storage is supported on top of Gluster. But
it needs application changes, and also, it skips some
caching layers.

It is not used over years, and not supported any more.
Removing the dead code.

Fixes: bz#1625102

Change-Id: Ide3b3f1f644f6ca58558bbe45561f346f96b95b7
Signed-off-by: Amar Tumballi <amarts@redhat.com>

4 files changed, 1 insertions, 192 deletions

diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h
index 24f08a05f4..1672d0d334 100644
--- a/libglusterfs/src/glusterfs.h
+++ b/libglusterfs/src/glusterfs.h
@@ -203,9 +203,6 @@ enum gf_internal_fop_indicator {
 
 #define DHT_CHANGELOG_RENAME_OP_KEY   "changelog.rename-op"
 
-#define ZR_FILE_CONTENT_STR     "glusterfs.file."
-#define ZR_FILE_CONTENT_STRLEN 15
-
 #define GLUSTERFS_WRITE_IS_APPEND "glusterfs.write-is-append"
 #define GLUSTERFS_WRITE_UPDATE_ATOMIC "glusterfs.write-update-atomic"
 #define GLUSTERFS_OPEN_FD_COUNT "glusterfs.open-fd-count"
@@ -272,9 +269,6 @@ enum gf_internal_fop_indicator {
 
 #define STARTING_EVENT_THREADS                 1
 
-#define ZR_FILE_CONTENT_REQUEST(key) (!strncmp(key, ZR_FILE_CONTENT_STR, \
-                                               ZR_FILE_CONTENT_STRLEN))
-
 #define DEFAULT_VAR_RUN_DIRECTORY        DATADIR "/run/gluster"
 #define DEFAULT_GLUSTERFSD_MISC_DIRETORY DATADIR "/lib/misc/glusterfsd"
 #ifdef GF_LINUX_HOST_OS
diff --git a/xlators/storage/posix/src/posix-helpers.c b/xlators/storage/posix/src/posix-helpers.c
index f18f181c45..ada32a6e6c 100644
--- a/xlators/storage/posix/src/posix-helpers.c
+++ b/xlators/storage/posix/src/posix-helpers.c
@@ -1009,169 +1009,6 @@ out:
 }
 
 
-int
-posix_set_file_contents (xlator_t *this, const char *path, char *keyp,
-                         data_t *value, int flags)
-{
-        char *      key                        = NULL;
-        char        real_path[PATH_MAX];
-        int32_t     file_fd                    = -1;
-        int         op_ret                     = 0;
-        int         ret                        = -1;
-
-
-        /* XXX: does not handle assigning GFID to created files */
-        return -1;
-
-        key = &(keyp[15]);
-        sprintf (real_path, "%s/%s", path, key);
-
-        if (flags & XATTR_REPLACE) {
-                /* if file exists, replace it
-                 * else, error out */
-                file_fd = open (real_path, O_TRUNC|O_WRONLY);
-
-                if (file_fd == -1) {
-                        goto create;
-                }
-
-                if (value->len) {
-                        ret = sys_write (file_fd, value->data, value->len);
-                        if (ret == -1) {
-                                op_ret = -errno;
-                                gf_msg (this->name, GF_LOG_ERROR, errno,
-                                        P_MSG_SET_FILE_CONTENTS, "write failed"
-                                        "while doing setxattr for key %s on"
-                                        "path%s", key, real_path);
-                                goto out;
-                        }
-
-                        ret = sys_close (file_fd);
-                        if (ret == -1) {
-                                op_ret = -errno;
-                                gf_msg (this->name, GF_LOG_ERROR, errno,
-                                        P_MSG_SET_FILE_CONTENTS,
-                                        "close failed on %s",
-                                        real_path);
-                                goto out;
-                        }
-                }
-
-        create: /* we know file doesn't exist, create it */
-
-                file_fd = open (real_path, O_CREAT|O_WRONLY, 0644);
-
-                if (file_fd == -1) {
-                        op_ret = -errno;
-                        gf_msg (this->name, GF_LOG_ERROR, errno,
-                                P_MSG_SET_FILE_CONTENTS, "failed to open file"
-                                "%s with O_CREAT", key);
-                        goto out;
-                }
-
-                ret = sys_write (file_fd, value->data, value->len);
-                if (ret == -1) {
-                        op_ret = -errno;
-                        gf_msg (this->name, GF_LOG_ERROR, errno,
-                                P_MSG_SET_FILE_CONTENTS, "write failed on %s"
-                                "while setxattr with key %s", real_path, key);
-                        goto out;
-                }
-
-                ret = sys_close (file_fd);
-                if (ret == -1) {
-                        op_ret = -errno;
-                        gf_msg (this->name, GF_LOG_ERROR, errno,
-                                P_MSG_SET_FILE_CONTENTS, "close failed on"
-                                " %s while setxattr with key %s",
-                                real_path, key);
-                        goto out;
-                }
-        }
-
-out:
-        return op_ret;
-}
-
-
-int
-posix_get_file_contents (xlator_t *this, uuid_t pargfid,
-                         const char *name, char **contents)
-{
-        char        *real_path                 = NULL;
-        int32_t     file_fd                    = -1;
-        struct iatt stbuf                      = {0,};
-        int         op_ret                     = 0;
-        int         ret                        = -1;
-
-
-        MAKE_HANDLE_PATH (real_path, this, pargfid, name);
-        if (!real_path) {
-                op_ret = -ESTALE;
-                gf_msg (this->name, GF_LOG_ERROR, ESTALE,
-                        P_MSG_XDATA_GETXATTR,
-                        "Failed to create handle path for %s/%s",
-                        uuid_utoa (pargfid), name);
-                goto out;
-        }
-
-        /* TODO: Not fetching posix_mdata_t. This is fine without
-         * RIO as this routine is only interested in file contents.
-         * Need to check how does this function fits into RIO?
-         */
-        op_ret = posix_istat (this, NULL, pargfid, name, &stbuf);
-        if (op_ret == -1) {
-                op_ret = -errno;
-                gf_msg (this->name, GF_LOG_ERROR, errno, P_MSG_XDATA_GETXATTR,
-                        "lstat failed on %s", real_path);
-                goto out;
-        }
-
-        file_fd = open (real_path, O_RDONLY);
-
-        if (file_fd == -1) {
-                op_ret = -errno;
-                gf_msg (this->name, GF_LOG_ERROR, errno, P_MSG_XDATA_GETXATTR,
-                        "open failed on %s", real_path);
-                goto out;
-        }
-
-        *contents = GF_CALLOC (stbuf.ia_size + 1, sizeof(char),
-                               gf_posix_mt_char);
-        if (! *contents) {
-                op_ret = -errno;
-                goto out;
-        }
-
-        ret = sys_read (file_fd, *contents, stbuf.ia_size);
-        if (ret <= 0) {
-                op_ret = -1;
-                gf_msg (this->name, GF_LOG_ERROR, errno, P_MSG_XDATA_GETXATTR,
-                        "read on %s failed", real_path);
-                goto out;
-        }
-
-        *contents[stbuf.ia_size] = '\0';
-
-        op_ret = sys_close (file_fd);
-        file_fd = -1;
-        if (op_ret == -1) {
-                op_ret = -errno;
-                gf_msg (this->name, GF_LOG_ERROR, errno, P_MSG_XDATA_GETXATTR,
-                        "close on %s failed", real_path);
-                goto out;
-        }
-
-out:
-        if (op_ret < 0) {
-                GF_FREE (*contents);
-                if (file_fd != -1)
-                        sys_close (file_fd);
-        }
-
-        return op_ret;
-}
-
 #ifdef HAVE_SYS_ACL_H
 int
 posix_pacl_set (const char *path, const char *key, const char *acl_s)
@@ -1284,9 +1121,6 @@ posix_handle_pair (xlator_t *this, const char *real_path,
         } else if (posix_is_gfid2path_xattr (key)) {
                 ret = -ENOTSUP;
                 goto out;
-        } else if (ZR_FILE_CONTENT_REQUEST(key)) {
-                ret = posix_set_file_contents (this, real_path, key, value,
-                                               flags);
         } else if (GF_POSIX_ACL_REQUEST (key)) {
                 if (stbuf && IS_DHT_LINKFILE_MODE (stbuf))
                         goto out;
@@ -1773,8 +1607,7 @@ _handle_entry_create_keyvalue_pair (dict_t *d, char *k, data_t *v,
             !strcmp ("gfid-req", k) ||
             !strcmp (POSIX_ACL_DEFAULT_XATTR, k) ||
             !strcmp (POSIX_ACL_ACCESS_XATTR, k) ||
-            posix_xattr_ignorable (k) ||
-            ZR_FILE_CONTENT_REQUEST(k)) {
+            posix_xattr_ignorable (k)) {
                 return 0;
         }
 
diff --git a/xlators/storage/posix/src/posix-inode-fd-ops.c b/xlators/storage/posix/src/posix-inode-fd-ops.c
index e0d8f258fc..edd3fc1db3 100644
--- a/xlators/storage/posix/src/posix-inode-fd-ops.c
+++ b/xlators/storage/posix/src/posix-inode-fd-ops.c
@@ -2879,7 +2879,6 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
         char                 *value                 = NULL;
         char                 *real_path             = NULL;
         dict_t               *dict                  = NULL;
-        char                 *file_contents         = NULL;
         int                   ret                   = -1;
         char                 *path                  = NULL;
         char                 *rpath                 = NULL;
@@ -2924,19 +2923,6 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                 goto out;
         }
 
-        if (loc->inode && IA_ISDIR(loc->inode->ia_type) && name &&
-            ZR_FILE_CONTENT_REQUEST(name)) {
-                ret = posix_get_file_contents (this, loc->gfid, &name[15],
-                                               &file_contents);
-                if (ret < 0) {
-                        op_errno = -ret;
-                        gf_msg (this->name, GF_LOG_ERROR, op_errno,
-                                P_MSG_FILE_FAILED, "getting file contents"
-                                "failed");
-                        goto out;
-                }
-        }
-
         dict = dict_new ();
         if (!dict) {
                 op_errno = ENOMEM;
diff --git a/xlators/storage/posix/src/posix.h b/xlators/storage/posix/src/posix.h
index db525ad937..bf0aab7ef2 100644
--- a/xlators/storage/posix/src/posix.h
+++ b/xlators/storage/posix/src/posix.h
@@ -343,10 +343,6 @@ int posix_fhandle_pair (call_frame_t *frame, xlator_t *this, int fd, char *key,
                         data_t *value, int flags, struct iatt *stbuf,
                         fd_t *_fd);
 void posix_spawn_janitor_thread (xlator_t *this);
-int posix_get_file_contents (xlator_t *this, uuid_t pargfid,
-                             const char *name, char **contents);
-int posix_set_file_contents (xlator_t *this, const char *path, char *key,
-                             data_t *value, int flags);
 int posix_acl_xattr_set (xlator_t *this, const char *path, dict_t *xattr_req);
 int posix_gfid_heal (xlator_t *this, const char *path, loc_t *loc, dict_t *xattr_req);
 int posix_entry_create_xattr_set (xlator_t *this, const char *path,