+/*
+ * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
+ *
+ * Licensed under the GPL v2. For licencing details see COPYING.
+ */
+
+/** \file blob.c Macros and functions for blob handling. */
+
+#include <fnmatch.h>
#include "para.h"
#include "error.h"
-#include "afs.h"
#include "string.h"
-
-/** \file blob.c Macros and functions for blob handling. */
+#include "afh.h"
+#include "afs.h"
+#include "net.h"
static struct osl_column_description blob_cols[] = {
[BLOBCOL_ID] = {
BLOB_LS_FLAG_SORT_BY_ID = 4,
};
-/** Data passed to \p com_lsbob_callback(). */
-struct com_lsblob_options {
- /** Given flags for the ls command. */
+/** Structure passed to the \p print_blob function. */
+struct lsblob_action_data {
+ /* The flags given at the command line. */
uint32_t flags;
+ /** Message buffer. */
+ struct para_buffer pb;
};
-/** Structure passed to the \p print_blob loop function. */
-struct lsblob_loop_data {
- struct com_lsblob_options *opts;
- struct para_buffer *pb;
- struct osl_table *table;
-};
-
-static int print_blob(struct osl_row *row, void *loop_data)
+static int print_blob(struct osl_table *table, struct osl_row *row,
+ const char *name, void *data)
{
+ struct lsblob_action_data *lbad = data;
struct osl_object obj;
- char *name;
uint32_t id;
int ret;
- struct lsblob_loop_data *lld = loop_data;
- ret = osl_get_object(lld->table, row, BLOBCOL_NAME, &obj);
- if (ret < 0)
- return ret;
- name = obj.data;
- if (!*name) /* ignore dummy row */
+ if (!(lbad->flags & BLOB_LS_FLAG_LONG)) {
+ para_printf(&lbad->pb, "%s\n", name);
return 1;
- ret = osl_get_object(lld->table, row, BLOBCOL_ID, &obj);
- if (ret < 0)
+ }
+ ret = osl_get_object(table, row, BLOBCOL_ID, &obj);
+ if (ret < 0) {
+ para_printf(&lbad->pb, "%s: %s\n", name, PARA_STRERROR(-ret));
return ret;
+ }
id = *(uint32_t *)obj.data;
- if (lld->opts->flags & BLOB_LS_FLAG_LONG)
- para_printf(lld->pb, "%u\t%s\n", id, name);
- else
- para_printf(lld->pb, "%s\n", name);
+ para_printf(&lbad->pb, "%u\t%s\n", id, name);
return 1;
}
-int com_lsblob_callback(struct osl_table *table,
- const struct osl_object *query, struct osl_object *ls_output)
+static int com_lsblob_callback(struct osl_table *table,
+ const struct osl_object *query, struct osl_object *result)
{
- struct para_buffer pb = {.buf = NULL};
- struct lsblob_loop_data lld = {.opts = query->data, .pb = &pb, .table = table};
+ struct lsblob_action_data lbad = {.flags = *(uint32_t *)query->data};
+ struct pattern_match_data pmd = {
+ .table = table,
+ .patterns = {.data = (char *)query->data + sizeof(uint32_t),
+ .size = query->size - sizeof(uint32_t)},
+ .pm_flags = PM_NO_PATTERN_MATCHES_EVERYTHING | PM_SKIP_EMPTY_NAME,
+ .match_col_num = BLOBCOL_NAME,
+ .data = &lbad,
+ .action = print_blob,
+ };
int ret;
- if (lld.opts->flags & BLOB_LS_FLAG_REVERSE) {
- if (lld.opts->flags & BLOB_LS_FLAG_SORT_BY_ID)
- ret = osl_rbtree_loop(lld.table, BLOBCOL_ID, &lld, print_blob);
- else
- ret = osl_rbtree_loop_reverse(lld.table, BLOBCOL_NAME, &lld, print_blob);
- } else {
- if (lld.opts->flags & BLOB_LS_FLAG_SORT_BY_ID)
- ret = osl_rbtree_loop_reverse(lld.table, BLOBCOL_ID, &lld, print_blob);
- else
- ret = osl_rbtree_loop(lld.table, BLOBCOL_NAME, &lld, print_blob);
- }
- ls_output->data = pb.buf;
- ls_output->size = pb.size;
- return ret;
+ if (lbad.flags & BLOB_LS_FLAG_REVERSE)
+ pmd.pm_flags |= PM_REVERSE_LOOP;
+ if (!(lbad.flags & BLOB_LS_FLAG_SORT_BY_ID))
+ pmd.loop_col_num = BLOBCOL_ID;
+ else
+ pmd.loop_col_num = BLOBCOL_NAME;
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ para_printf(&lbad.pb, "%s\n", PARA_STRERROR(-ret));
+ if (!lbad.pb.buf)
+ return 0;
+ result->data = lbad.pb.buf;
+ result->size = lbad.pb.size;
+ return 1;
}
-static int com_lsblob(callback_function *f, __a_unused int fd, int argc, const char **argv)
+static int com_lsblob(callback_function *f, int fd, int argc, char * const * const argv)
{
- struct com_lsblob_options clbo = {.flags = 0};
- struct osl_object query = {.data = &clbo, .size = sizeof(clbo)},
- ls_output;
+ uint32_t flags = 0;
+ struct osl_object options = {.data = &flags, .size = sizeof(flags)},
+ result;
int i, ret;
for (i = 1; i < argc; i++) {
break;
}
if (!strcmp(arg, "-l")) {
- clbo.flags |= BLOB_LS_FLAG_LONG;
+ flags |= BLOB_LS_FLAG_LONG;
continue;
}
if (!strcmp(arg, "-i")) {
- clbo.flags |= BLOB_LS_FLAG_SORT_BY_ID;
+ flags |= BLOB_LS_FLAG_SORT_BY_ID;
continue;
}
if (!strcmp(arg, "-r")) {
- clbo.flags |= BLOB_LS_FLAG_REVERSE;
+ flags |= BLOB_LS_FLAG_REVERSE;
continue;
}
+ break;
+ }
+// if (argc > i)
+// return -E_BLOB_SYNTAX;
+ ret = send_option_arg_callback_request(&options, argc - i,
+ argv + i, f, &result);
+ if (ret > 0) {
+ send_buffer(fd, (char *)result.data);
+ free(result.data);
}
- if (argc > i)
- return -E_BLOB_SYNTAX;
- ret = send_option_arg_callback_request(&query, argc - i,
- argv + i, f, &ls_output);
- if (ret >= 0 && ls_output.data)
- printf("%s\n", (char *)ls_output.data);
- free(ls_output.data);
return ret;
}
-static int com_catblob_callback(struct osl_table *table,
- const struct osl_object *query, struct osl_object *output)
+static int cat_blob(struct osl_table *table, struct osl_row *row,
+ __a_unused const char *name, void *data)
{
- struct osl_object obj;
int ret;
- struct osl_row *row;
+ struct osl_object *blobs = data;
+ struct osl_object obj;
- ret = osl_get_row(table, BLOBCOL_NAME, query, &row);
- if (ret < 0)
- return ret;
ret = osl_open_disk_object(table, row, BLOBCOL_DEF, &obj);
if (ret < 0)
return ret;
- output->data = para_malloc(obj.size);
- output->size = obj.size;
- memcpy(output->data, obj.data, obj.size);
+ if (obj.size) {
+ blobs->data = para_realloc(blobs->data, blobs->size + obj.size);
+ memcpy(blobs->data + blobs->size, obj.data, obj.size);
+ blobs->size += obj.size;
+ }
return osl_close_disk_object(&obj);
}
-static int com_catblob(callback_function *f, __a_unused int fd, int argc,
- const char **argv)
+
+static int com_catblob_callback(struct osl_table *table,
+ const struct osl_object *query, struct osl_object *result)
{
- struct osl_object cat_output = {.data = NULL};
int ret;
+ struct pattern_match_data pmd = {
+ .table = table,
+ .patterns = *query,
+ .loop_col_num = BLOBCOL_NAME,
+ .match_col_num = BLOBCOL_NAME,
+ .pm_flags = PM_SKIP_EMPTY_NAME,
+ .data = result,
+ .action = cat_blob
+ };
+ result->data = NULL;
+ ret = for_each_matching_row(&pmd);
+ if (result->data)
+ return 1;
+ return (ret > 0)? 0 : ret;
+}
- if (argc != 2)
- return -E_BLOB_SYNTAX;
- if (!*argv[1]) /* empty name is reserved of the dummy row */
+static int com_catblob(callback_function *f, int fd, int argc,
+ char * const * const argv)
+{
+ struct osl_object result;
+ int ret;
+
+ if (argc < 2)
return -E_BLOB_SYNTAX;
- ret = send_standard_callback_request(1, argv + 1, f, &cat_output);
- if (ret >= 0 && cat_output.data)
- printf("%s\n", (char *)cat_output.data);
- free(cat_output.data);
+ ret = send_standard_callback_request(argc - 1, argv + 1, f, &result);
+ if (ret > 0) {
+ ret = send_bin_buffer(fd, (char *)result.data, result.size);
+ free(result.data);
+ }
return ret;
+}
+
+/** Used for removing rows from a blob table. */
+struct rmblob_data {
+ /** Message buffer. */
+ struct para_buffer pb;
+ /** Number of removed blobs. */
+ unsigned num_removed;
+};
+
+static int remove_blob(struct osl_table *table, struct osl_row *row,
+ const char *name, void *data)
+{
+ struct rmblob_data *rmbd = data;
+ int ret = osl_del_row(table, row);
+ if (ret < 0) {
+ para_printf(&rmbd->pb, "%s: %s\n", name, PARA_STRERROR(-ret));
+ return ret;
+ }
+ rmbd->num_removed++;
+ return 1; /* return success to remove other matching blobs. */
+}
+
+static int com_rmblob_callback(struct osl_table *table,
+ const struct osl_object *query,
+ struct osl_object *result)
+{
+ int ret;
+ struct rmblob_data rmbd = {.num_removed = 0};
+ struct pattern_match_data pmd = {
+ .table = table,
+ .patterns = *query,
+ .loop_col_num = BLOBCOL_NAME,
+ .match_col_num = BLOBCOL_NAME,
+ .pm_flags = PM_SKIP_EMPTY_NAME,
+ .data = &rmbd,
+ .action = remove_blob
+ };
+ result->data = NULL;
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ para_printf(&rmbd.pb, "%s\n", PARA_STRERROR(-ret));
+ if (!rmbd.num_removed)
+ para_printf(&rmbd.pb, "no matches, nothing removed\n");
+ else {
+ para_printf(&rmbd.pb, "removed %d blobs\n", rmbd.num_removed);
+ afs_event(BLOB_RENAME, NULL, table);
+ }
+ result->data = rmbd.pb.buf;
+ result->size = rmbd.pb.size;
+ return 1;
+}
+static int com_rmblob(callback_function *f, int fd, int argc,
+ char * const * const argv)
+{
+ int ret;
+ struct osl_object result;
+
+ if (argc < 2)
+ return -E_MOOD_SYNTAX;
+ ret = send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
+ &result);
+ if (ret > 0) {
+ send_buffer(fd, (char *)result.data);
+ free(result.data);
+ }
+ return ret;
}
static int com_addblob_callback(struct osl_table *table,
ret = osl_add_row(table, objs);
if (ret < 0)
return ret;
- } else { /* get id of the dummy row and increment it */
+ } else {
+ /* check if name already exists */
struct osl_row *row;
- struct osl_object obj = {.data = "", .size = 1};
+ struct osl_object obj = {.data = name, .size = name_len};
+ ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
+ if (ret < 0 && ret != -E_RB_KEY_NOT_FOUND)
+ return ret;
+ if (ret >= 0) { /* we already have a blob with this name */
+ obj.data = name + name_len;
+ obj.size = query->size - name_len;
+ return osl_update_object(table, row, BLOBCOL_DEF, &obj);
+ }
+ /* new blob, get id of the dummy row and increment it */
+ obj.data = "";
+ obj.size = 1;
ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
if (ret < 0)
return ret;
objs[BLOBCOL_NAME].size = name_len;
objs[BLOBCOL_DEF].data = name + name_len;
objs[BLOBCOL_DEF].size = query->size - name_len;
- return osl_add_row(table, objs);
+ ret = osl_add_row(table, objs);
+ if (ret < 0)
+ return ret;
+ afs_event(BLOB_ADD, NULL, table);
+ return 1;
}
-static int com_addblob(callback_function *f, __a_unused int fd, int argc,
- const char **argv)
+static int com_addblob(callback_function *f, int fd, int argc,
+ char * const * const argv)
{
struct osl_object arg_obj;
PARA_NOTICE_LOG("argv[1]: %s\n", argv[1]);
arg_obj.size = strlen(argv[1]) + 1;
arg_obj.data = (char *)argv[1];
- return stdin_command(&arg_obj, f, 10 * 1024 * 1024, NULL);
-}
-
-static int com_rmblob_callback(struct osl_table *table,
- const struct osl_object *query,
- __a_unused struct osl_object *result)
-{
- char *p = query->data;
- size_t len;
- int ret;
-
- for (; p < (char *)query->data + query->size; p += len + 1) {
- struct osl_row *row;
- struct osl_object obj;
-
- len = strlen(p);
- obj.data = p;
- obj.size = len + 1;
- ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
- if (ret < 0)
- return ret;
- ret = osl_del_row(table, row);
- if (ret < 0)
- return ret;
- }
- return 1;
-}
-
-static int com_rmblob(callback_function *f, __a_unused int fd, int argc,
- const char **argv)
-{
- if (argc < 2)
- return -E_MOOD_SYNTAX;
- return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
- NULL);
+ return stdin_command(fd, &arg_obj, f, 10 * 1024 * 1024, NULL);
}
static int com_mvblob_callback(struct osl_table *table,
return ret;
obj.data = dest;
obj.size = strlen(dest) + 1;
- return osl_update_object(table, row, BLOBCOL_NAME, &obj);
+ ret = osl_update_object(table, row, BLOBCOL_NAME, &obj);
+ if (ret < 0)
+ return ret;
+ afs_event(BLOB_RENAME, NULL, table);
+ return 1;
}
-static int com_mvblob(callback_function *f, __a_unused int fd,
- int argc, const char **argv)
+static int com_mvblob(callback_function *f, __a_unused int fd,
+ int argc, char * const * const argv)
{
if (argc != 3)
return -E_MOOD_SYNTAX;
{ \
return com_ ## cmd_name ## blob_callback(table_name ## _table, query, output); \
} \
- int com_ ## cmd_name ## cmd_prefix(__a_unused int fd, int argc, const char **argv) \
+ int com_ ## cmd_name ## cmd_prefix(int fd, int argc, char * const * const argv) \
{ \
return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, fd, argc, argv); \
}
*name = (char *)obj.data;
return 1;
}
+
/** Define the \p get_name_by_id function for this blob type. */
#define DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix) \
int cmd_prefix ## _get_name_by_id(uint32_t id, char **name) \
return blob_get_name_by_id(table_name ## _table, id, name); \
}
-/** Define the \p shutdown function for this blob type. */
-#define DEFINE_BLOB_SHUTDOWN(table_name) \
- void table_name ## _shutdown(enum osl_close_flags flags) \
+
+static int blob_get_def_by_name(struct osl_table *table, char *name,
+ struct osl_object *def)
+{
+ struct osl_row *row;
+ struct osl_object obj = {.data = name, .size = strlen(name) + 1};
+ int ret;
+
+ def->data = NULL;
+ if (!*name)
+ return 1;
+ ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
+ if (ret < 0)
+ return ret;
+ return osl_open_disk_object(table, row, BLOBCOL_DEF, def);
+}
+
+/** Define the \p get_def_by_id function for this blob type. */
+#define DEFINE_GET_DEF_BY_NAME(table_name, cmd_prefix) \
+ int cmd_prefix ## _get_def_by_name(char *name, struct osl_object *def) \
{ \
- osl_close_table(table_name ## _table, flags); \
- table_name ## _table = NULL; \
+ return blob_get_def_by_name(table_name ## _table, name, def); \
}
-static int blob_init(struct osl_table **table,
- const struct osl_table_description *desc,
- struct table_info *ti)
+static int blob_get_def_by_id(struct osl_table *table, uint32_t id,
+ struct osl_object *def)
{
+ struct osl_row *row;
+ struct osl_object obj = {.data = &id, .size = sizeof(id)};
int ret;
- ti->desc = desc;
- ret = osl_open_table(ti->desc, &ti->table);
- if (ret >= 0) {
- *table = ti->table;
+ def->data = NULL;
+ if (!id)
+ return 1;
+ ret = osl_get_row(table, BLOBCOL_ID, &obj, &row);
+ if (ret < 0)
+ return ret;
+ return osl_open_disk_object(table, row, BLOBCOL_DEF, def);
+}
+
+/** Define the \p get_def_by_id function for this blob type. */
+#define DEFINE_GET_DEF_BY_ID(table_name, cmd_prefix) \
+ int cmd_prefix ## _get_def_by_id(uint32_t id, struct osl_object *def) \
+ { \
+ return blob_get_def_by_id(table_name ## _table, id, def); \
+ }
+
+static int blob_get_name_and_def_by_row(struct osl_table *table,
+ const struct osl_row *row, char **name, struct osl_object *def)
+{
+ struct osl_object obj;
+ int ret = osl_get_object(table, row, BLOBCOL_NAME, &obj);
+ if (ret < 0)
return ret;
+ *name = obj.data;
+ return osl_open_disk_object(table, row, BLOBCOL_DEF, def);
+}
+/** Define the \p get_name_and_def_by_row function for this blob type. */
+#define DEFINE_GET_NAME_AND_DEF_BY_ROW(table_name, cmd_prefix) \
+ int cmd_prefix ## _get_name_and_def_by_row(const struct osl_row *row, \
+ char **name, struct osl_object *def) \
+ { \
+ return blob_get_name_and_def_by_row(table_name ## _table, \
+ row, name, def); \
}
+
+/** Define the \p close function for this blob type. */
+#define DEFINE_BLOB_CLOSE(table_name) \
+ void table_name ## _close(void) \
+ { \
+ osl_close_table(table_name ## _table, OSL_MARK_CLEAN); \
+ table_name ## _table = NULL; \
+ }
+
+/** Define the \p create function for this blob type. */
+#define DEFINE_BLOB_CREATE(table_name) \
+ int table_name ## _create(const char *dir) \
+ { \
+ table_name ## _table_desc.dir = dir; \
+ return osl_create_table(&table_name ## _table_desc); \
+ }
+
+static int blob_open(struct osl_table **table,
+ struct osl_table_description *desc,
+ const char *dir)
+{
+ int ret;
+ desc->dir = dir;
+ ret = osl_open_table(desc, table);
+ if (ret >= 0)
+ return ret;
*table = NULL;
- return ret == -E_NOENT? 1 : ret;
+ if (ret >= 0 || is_errno(-ret, ENOENT))
+ return 1;
+ return ret;
}
+#define DEFINE_BLOB_OPEN(table_name) \
+ int table_name ## _open(const char *dir) \
+ { \
+ return blob_open(&table_name ## _table, \
+ &table_name ## _table_desc, dir); \
+ }
+
+
/** Define the \p init function for this blob type. */
#define DEFINE_BLOB_INIT(table_name) \
- int table_name ## _init(struct table_info *ti) \
+ void table_name ## _init(struct afs_table *t) \
{ \
- return blob_init(&table_name ## _table, \
- &table_name ## _table_desc, ti); \
+ t->name = table_name ## _table_desc.name; \
+ t->open = table_name ## _open; \
+ t->close = table_name ## _close; \
+ t->create = table_name ## _create;\
+ t->event_handler = table_name ##_event_handler; \
+ table_name ## _table = NULL; \
}
/** Define all functions for this blob type. */
#define DEFINE_BLOB_FUNCTIONS(table_name, cmd_prefix) \
+ DEFINE_BLOB_OPEN(table_name) \
+ DEFINE_BLOB_CLOSE(table_name) \
+ DEFINE_BLOB_CREATE(table_name) \
+ DEFINE_BLOB_INIT(table_name) \
DEFINE_BLOB_COMMAND(ls, table_name, cmd_prefix) \
DEFINE_BLOB_COMMAND(cat, table_name, cmd_prefix) \
DEFINE_BLOB_COMMAND(add, table_name, cmd_prefix) \
DEFINE_BLOB_COMMAND(rm, table_name, cmd_prefix) \
DEFINE_BLOB_COMMAND(mv, table_name, cmd_prefix) \
DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix); \
- DEFINE_BLOB_SHUTDOWN(table_name); \
- DEFINE_BLOB_INIT(table_name);
+ DEFINE_GET_DEF_BY_ID(table_name, cmd_prefix); \
+ DEFINE_GET_DEF_BY_NAME(table_name, cmd_prefix); \
+ DEFINE_GET_NAME_AND_DEF_BY_ROW(table_name, cmd_prefix); \
/** \cond doxygen isn't smart enough to recognize these */
DEFINE_BLOB_FUNCTIONS(lyrics, lyr);
projects / paraslash.git / blobdiff