-/*
- * Copyright (C) 1997-2014 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 1997 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file attribute.c Attribute handling functions. */
#include <regex.h>
#include <osl.h>
+#include <lopsub.h>
+#include "server_cmd.lsg.h"
#include "para.h"
#include "error.h"
#include "crypt.h"
return 1;
}
-/**
- * Flags used by the lsatt command.
- *
- * \param \sa com_lsatt().
- */
-enum lsatt_flags {
- /** Whether "-a" was given for the lsatt command. */
- LSATT_FLAG_SORT_BY_ID = 1,
- /** Whether "-l" was given for the lsatt command. */
- LSATT_FLAG_LONG = 2,
- /** Reverse sort order. */
- LSATT_FLAG_REVERSE = 4
-};
-
/** Data passed to the action function of lsatt */
-struct lsatt_action_data {
- /** The result buffer. */
- struct para_buffer pb;
- /** The given flags for the lsatt command. */
- unsigned flags;
-};
-
static int print_attribute(struct osl_table *table, struct osl_row *row,
const char *name, void *data)
{
- struct lsatt_action_data *laad = data;
+ struct afs_callback_arg *aca = data;
+ bool l_given = SERVER_CMD_OPT_GIVEN(LSATT, LONG, aca->lpr);
struct osl_object bitnum_obj;
int ret;
- if (!(laad->flags & LSATT_FLAG_LONG))
- return para_printf(&laad->pb, "%s\n", name);
+ if (!l_given) {
+ para_printf(&aca->pbout, "%s\n", name);
+ return 1;
+ }
ret = osl(osl_get_object(table, row, ATTCOL_BITNUM, &bitnum_obj));
if (ret < 0) {
- para_printf(&laad->pb, "%s: %s\n", name, para_strerror(-ret));
+ para_printf(&aca->pbout, "%s: %s\n", name, para_strerror(-ret));
return ret;
}
- return para_printf(&laad->pb, "%u\t%s\n", *(unsigned char*)bitnum_obj.data,
+ para_printf(&aca->pbout, "%u\t%s\n", *(unsigned char*)bitnum_obj.data,
name);
+ return 1;
}
-static void com_lsatt_callback(int fd, const struct osl_object *query)
+static int com_lsatt_callback(struct afs_callback_arg *aca)
{
- struct lsatt_action_data laad = {
- .flags = *(unsigned *) query->data,
- .pb = {
- .max_size = shm_get_shmmax(),
- .private_data = &(struct afs_max_size_handler_data) {
- .fd = fd,
- .band = SBD_OUTPUT
- },
- .max_size_handler = afs_max_size_handler
- }
-
- };
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LSATT);
+ bool i_given, r_given;
+ int ret;
struct pattern_match_data pmd = {
.table = attribute_table,
- .loop_col_num = ATTCOL_BITNUM,
+ .loop_col_num = ATTCOL_NAME,
.match_col_num = ATTCOL_NAME,
- .patterns = {.data = (char *)query->data + sizeof(laad.flags),
- .size = query->size - sizeof(laad.flags)},
.pm_flags = PM_NO_PATTERN_MATCHES_EVERYTHING,
- .data = &laad,
+ .data = aca,
.action = print_attribute
};
- if (laad.flags & LSATT_FLAG_SORT_BY_ID)
- pmd.loop_col_num = ATTCOL_NAME;
- if (laad.flags & LSATT_FLAG_REVERSE)
+
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ pmd.lpr = aca->lpr;
+ i_given = SERVER_CMD_OPT_GIVEN(LSATT, ID_SORT, aca->lpr);
+ r_given = SERVER_CMD_OPT_GIVEN(LSATT, REVERSE, aca->lpr);
+
+ if (i_given)
+ pmd.loop_col_num = ATTCOL_BITNUM;
+ if (r_given)
pmd.pm_flags |= PM_REVERSE_LOOP;
- for_each_matching_row(&pmd);
- if (laad.pb.offset)
- pass_buffer_as_shm(fd, SBD_OUTPUT, laad.pb.buf, laad.pb.offset);
- free(laad.pb.buf);
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ goto out;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
+out:
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-int com_lsatt(struct command_context *cc)
+static int com_lsatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- unsigned flags = 0;
- struct osl_object options = {.data = &flags, .size = sizeof(flags)};
- int ret, i;
-
- for (i = 1; i < cc->argc; i++) {
- const char *arg = cc->argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strcmp(arg, "-i")) {
- flags |= LSATT_FLAG_SORT_BY_ID;
- continue;
- }
- if (!strcmp(arg, "-l")) {
- flags |= LSATT_FLAG_LONG;
- continue;
- }
- if (!strcmp(arg, "-r")) {
- flags |= LSATT_FLAG_REVERSE;
- continue;
- }
- }
- ret = send_option_arg_callback_request(&options, cc->argc - i, cc->argv + i,
- com_lsatt_callback, afs_cb_result_handler, cc);
- if (ret < 0)
- send_strerror(cc, -ret);
- else if (ret == 0 && cc->argc > 1)
- ret = send_sb_va(&cc->scc, SBD_ERROR_LOG, "no matches\n");
- return ret;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LSATT);
+ return send_lls_callback_request(com_lsatt_callback, cmd, lpr, cc);
}
+EXPORT_SERVER_CMD_HANDLER(lsatt);
struct addatt_event_data {
const char *name;
unsigned char bitnum;
};
-
-static void com_addatt_callback(int fd, const struct osl_object *query)
+static int com_addatt_callback(struct afs_callback_arg *aca)
{
- char *p;
- int ret = 1, ret2 = 0;
- struct para_buffer pb = {
- .max_size = shm_get_shmmax(),
- .private_data = &(struct afs_max_size_handler_data) {
- .fd = fd,
- .band = SBD_OUTPUT
- },
- .max_size_handler = afs_max_size_handler
- };
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADDATT);
+ int i, ret = 1;
size_t len;
+ unsigned num_inputs;
- for (p = query->data; p < (char *)query->data + query->size; p += len + 1) {
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ num_inputs = lls_num_inputs(aca->lpr);
+ for (i = 0; i < num_inputs; i++) {
+ const char *name = lls_input(i, aca->lpr);
struct osl_object objs[NUM_ATT_COLUMNS];
struct osl_row *row;
unsigned char bitnum;
struct addatt_event_data aed;
- len = strlen(p);
- if (!len || p[len - 1] == '-' || p[len - 1] == '+') {
- ret2 = para_printf(&pb, "invalid attribute name: %s\n", p);
- if (ret2 < 0)
- goto out;
+ len = strlen(name);
+ if (len == 0 || name[len - 1] == '-' || name[len - 1] == '+') {
+ para_printf(&aca->pbout,
+ "invalid attribute name: %s\n", name);
continue;
}
- ret = get_attribute_bitnum_by_name(p, &bitnum);
+ ret = get_attribute_bitnum_by_name(name, &bitnum);
if (ret >= 0) {
- ret2 = para_printf(&pb, "attribute \"%s\" already exists\n", p);
- if (ret2 < 0)
- goto out;
+ para_printf(&aca->pbout,
+ "attribute \"%s\" already exists\n", name);
continue;
}
if (ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND)) /* error */
ret = -E_ATT_TABLE_FULL;
goto out;
}
- objs[ATTCOL_NAME].data = p;
+ objs[ATTCOL_NAME].data = (char *)name;
objs[ATTCOL_NAME].size = len + 1;
ret = osl(osl_add_row(attribute_table, objs));
if (ret < 0)
goto out;
- aed.name = p;
+ aed.name = name;
aed.bitnum = bitnum;
- afs_event(ATTRIBUTE_ADD, &pb, &aed);
+ ret = afs_event(ATTRIBUTE_ADD, &aca->pbout, &aed);
+ if (ret < 0)
+ goto out;
greatest_att_bitnum = PARA_MAX(greatest_att_bitnum, (int)bitnum);
}
out:
- if (ret < 0 && ret2 >= 0)
- para_printf(&pb, "%s: %s\n", p, para_strerror(-ret));
- if (pb.offset)
- pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
- free(pb.buf);
+ if (ret < 0)
+ para_printf(&aca->pbout, "error while adding %s\n",
+ lls_input(i, aca->lpr));
+ return ret;
}
-int com_addatt(struct command_context *cc)
+static int com_addatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- int ret;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADDATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 1, 64, &errctx));
- if (cc->argc < 2)
- return -E_ATTR_SYNTAX;
- ret = send_standard_callback_request(cc->argc - 1, cc->argv + 1,
- com_addatt_callback, afs_cb_result_handler, cc);
- if (ret < 0)
- send_strerror(cc, -ret);
- return ret;
+ if (ret < 0) {
+ send_errctx(cc, errctx);
+ return ret;
+ }
+ return send_lls_callback_request(com_addatt_callback, cmd, lpr, cc);
}
+EXPORT_SERVER_CMD_HANDLER(addatt);
-static void com_mvatt_callback(int fd, const struct osl_object *query)
+static int com_mvatt_callback(struct afs_callback_arg *aca)
{
- char *old = query->data;
- size_t size = strlen(old) + 1;
- char *new = old + size;
- struct osl_object obj = {.data = old, .size = size};
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(MVATT);
+ const char *old, *new;
+ struct osl_object obj;
struct osl_row *row;
- struct para_buffer pb = {
- .max_size = shm_get_shmmax(),
- .private_data = &(struct afs_max_size_handler_data) {
- .fd = fd,
- .band = SBD_OUTPUT
- },
- .max_size_handler = afs_max_size_handler,
- };
int ret;
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ old = lls_input(0, aca->lpr);
+ new = lls_input(1, aca->lpr);
+ obj.data = (char *)old;
+ obj.size = strlen(old) + 1;
ret = osl(osl_get_row(attribute_table, ATTCOL_NAME, &obj, &row));
if (ret < 0)
goto out;
- obj.data = new;
+ obj.data = (char *)new;
obj.size = strlen(new) + 1;
+ /* The update fails if the destination attribute exists. */
ret = osl(osl_update_object(attribute_table, row, ATTCOL_NAME, &obj));
out:
if (ret < 0)
- para_printf(&pb, "%s\n", para_strerror(-ret));
+ para_printf(&aca->pbout, "cannot rename %s to %s\n", old, new);
else
- afs_event(ATTRIBUTE_RENAME, &pb, NULL);
- if (pb.offset)
- pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
- free(pb.buf);
+ ret = afs_event(ATTRIBUTE_RENAME, &aca->pbout, NULL);
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-int com_mvatt(struct command_context *cc)
+static int com_mvatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- int ret;
-
- if (cc->argc != 3)
- return -E_ATTR_SYNTAX;
- ret = send_standard_callback_request(cc->argc - 1, cc->argv + 1,
- com_mvatt_callback, afs_cb_result_handler, cc);
- if (ret < 0)
- send_strerror(cc, -ret);
- return ret;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(MVATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 2, 2, &errctx));
+ if (ret < 0) {
+ send_errctx(cc, errctx);
+ return ret;
+ }
+ return send_lls_callback_request(com_mvatt_callback, cmd, lpr, cc);
}
-
-/** Data passed to the action handler of com_rmatt(). */
-struct remove_attribute_action_data {
- /** Message buffer. */
- struct para_buffer pb;
- /** Number of attributes removed. */
- int num_removed;
- /** Bitwise "or" of the removed attributes. */
- uint64_t mask_of_removed_atts;
-};
+EXPORT_SERVER_CMD_HANDLER(mvatt);
static int remove_attribute(struct osl_table *table, struct osl_row *row,
const char *name, void *data)
{
- struct remove_attribute_action_data *raad = data;
+ struct afs_callback_arg *aca = data;
int ret;
struct rmatt_event_data red = {.name = name};
ret = get_attribute_bitnum_by_name(name, &red.bitnum);
- if (ret < 0)
- return para_printf(&raad->pb, "%s: %s\n", name, para_strerror(-ret));
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot remove %s\n", name);
+ return ret;
+ }
+ para_printf(&aca->pbout, "removing attribute %s\n", name);
ret = osl(osl_del_row(table, row));
- if (ret < 0)
- return para_printf(&raad->pb, "%s: %s\n", name, para_strerror(-ret));
- ret = para_printf(&raad->pb, "removed attribute %s\n", name);
- raad->num_removed++;
- raad->mask_of_removed_atts |= (1 << red.bitnum);
- afs_event(ATTRIBUTE_REMOVE, &raad->pb, &red);
- return ret;
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot remove %s\n", name);
+ return ret;
+ }
+ return afs_event(ATTRIBUTE_REMOVE, &aca->pbout, &red);
}
-static void com_rmatt_callback(int fd, const struct osl_object *query)
+static int com_rmatt_callback(struct afs_callback_arg *aca)
{
- struct remove_attribute_action_data raad = {
- .num_removed = 0,
- .pb = {
- .max_size = shm_get_shmmax(),
- .private_data = &(struct afs_max_size_handler_data) {
- .fd = fd,
- .band = SBD_OUTPUT
- },
- .max_size_handler = afs_max_size_handler,
- }
- };
- int ret, ret2 = 0;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RMATT);
+ int ret;
struct pattern_match_data pmd = {
.table = attribute_table,
- .patterns = *query,
.loop_col_num = ATTCOL_BITNUM,
.match_col_num = ATTCOL_NAME,
- .data = &raad,
+ .data = aca,
.action = remove_attribute
};
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ pmd.lpr = aca->lpr;
ret = for_each_matching_row(&pmd);
if (ret < 0)
- ret2 = para_printf(&raad.pb, "%s\n", para_strerror(-ret));
- else if (!raad.num_removed)
- ret2 = para_printf(&raad.pb, "no match -- nothing removed\n");
- if (ret2 >= 0 && raad.pb.offset)
- pass_buffer_as_shm(fd, SBD_OUTPUT, raad.pb.buf, raad.pb.offset);
- free(raad.pb.buf);
+ goto out;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
+out:
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-int com_rmatt(struct command_context *cc)
+static int com_rmatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- int ret;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RMATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 1, INT_MAX, &errctx));
- if (cc->argc < 2)
- return -E_ATTR_SYNTAX;
- ret = send_standard_callback_request(cc->argc - 1, cc->argv + 1,
- com_rmatt_callback, afs_cb_result_handler, cc);
- if (ret < 0)
- send_strerror(cc, -ret);
- return ret;
+ if (ret < 0) {
+ send_errctx(cc, errctx);
+ return ret;
+ }
+ return send_lls_callback_request(com_rmatt_callback, cmd, lpr, cc);
}
+EXPORT_SERVER_CMD_HANDLER(rmatt);
/**
* Return a binary representation of the given attribute value.
return ret;
}
+static int att_logical_or(struct osl_row *row, void *data)
+{
+ uint64_t *att_mask = data, one = 1;
+ struct osl_object bitnum_obj;
+ int ret = osl_get_object(attribute_table, row, ATTCOL_BITNUM, &bitnum_obj);
+
+ if (ret < 0)
+ return ret;
+ *att_mask |= one << *(unsigned char *)bitnum_obj.data;
+ return 0;
+}
+
+/**
+ * Compute the attribute bit mask and check each afs info bitmap.
+ *
+ * \param aca The query field of \a aca is ignored.
+ *
+ * This iterates over all attributes in the attribute table and computes the
+ * logical or of 1 << b where b is the bit number of the attribute. The
+ * resulting bit mask is passed to aft_check_attributes() which performs the
+ * actual check.
+ *
+ * \return Standard.
+ *
+ * \sa \ref aft_check_attributes().
+ */
+int attribute_check_callback(struct afs_callback_arg *aca)
+{
+ int ret;
+ uint64_t att_mask = 0; /* bits corresponding to a attributes */
+
+ ret = osl_rbtree_loop(attribute_table, ATTCOL_BITNUM, &att_mask,
+ att_logical_or);
+ if (ret < 0) {
+ PARA_ERROR_LOG("attribute table loop failed: %s\n",
+ para_strerror(-ret));
+ return ret;
+ }
+ return aft_check_attributes(att_mask, &aca->pbout);
+}
+
/**
* Close the attribute table.
*
- * \sa osl_close_table().
+ * \sa \ref osl_close_table().
*/
static void attribute_close(void)
{
*
* \return Positive on success, negative on errors.
*
- * \sa osl_open_table().
+ * \sa \ref osl_open_table().
*/
static int attribute_open(const char *dir)
{
return ret;
}
attribute_table = NULL;
- if (ret >= 0 || ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
+ if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
return 1;
return ret;
}
projects / paraslash.git / blobdiff