From 7cd3cc24c8f3178382074c8a3a319df17b85769d Mon Sep 17 00:00:00 2001 From: Shehjar Tikoo Date: Thu, 16 Apr 2009 23:58:26 -0700 Subject: libglusterfsclient: Add readlink API Signed-off-by: Anand V. Avati --- libglusterfsclient/src/libglusterfsclient.c | 79 +++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) diff --git a/libglusterfsclient/src/libglusterfsclient.c b/libglusterfsclient/src/libglusterfsclient.c index 3bbe8894503..9dcaadc0e19 100755 --- a/libglusterfsclient/src/libglusterfsclient.c +++ b/libglusterfsclient/src/libglusterfsclient.c @@ -4668,6 +4668,85 @@ out: return op_ret; } +int32_t +libgf_client_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + const char *path) +{ + libgf_client_local_t *local = frame->local; + + local->reply_stub = fop_readlink_cbk_stub (frame, NULL, op_ret, + op_errno, path); + + LIBGF_REPLY_NOTIFY (local); + return 0; +} + +int32_t +libgf_client_readlink (libglusterfs_client_ctx_t *ctx, loc_t *loc, char *buf, + size_t bufsize) +{ + int op_ret = -1; + libgf_client_local_t *local = NULL; + call_stub_t *stub = NULL; + size_t cpy_size = 0; + + LIBGF_CLIENT_FOP (ctx, stub, readlink, local, loc, bufsize); + + op_ret = stub->args.readlink_cbk.op_ret; + errno = stub->args.readlink_cbk.op_errno; + + if (op_ret != -1) { + cpy_size = ((op_ret <= bufsize) ? op_ret : bufsize); + memcpy (buf, stub->args.readlink_cbk.buf, cpy_size); + op_ret = cpy_size; + } + + call_stub_destroy (stub); + return op_ret; +} + +ssize_t +glusterfs_readlink (glusterfs_handle_t handle, const char *path, char *buf, + size_t bufsize) +{ + int32_t op_ret = -1; + loc_t loc = {0, }; + libglusterfs_client_ctx_t *ctx = handle; + char *name = NULL; + + GF_VALIDATE_OR_GOTO (LIBGF_XL_NAME, ctx, out); + GF_VALIDATE_ABSOLUTE_PATH_OR_GOTO (LIBGF_XL_NAME, path, out); + + loc.path = strdup (path); + op_ret = libgf_client_path_lookup (&loc, ctx, 1); + if (op_ret == -1) { + gf_log ("libglusterfsclient", GF_LOG_ERROR, + "path lookup failed for (%s)", path); + goto out; + } + + name = strdup (path); + op_ret = libgf_client_loc_fill (&loc, ctx, 0, loc.parent->ino, + basename (name)); + if (op_ret == -1) { + gf_log ("libglusterfsclient", GF_LOG_ERROR, + "libgf_client_loc_fill returned -1, " + "returning EINVAL"); + errno = EINVAL; + goto out; + } + + op_ret = libgf_client_readlink (ctx, &loc, buf, bufsize); + +out: + if (name) + FREE (name); + + libgf_client_loc_wipe (&loc); + return op_ret; +} + static struct xlator_fops libgf_client_fops = { }; -- cgit