diff options
Diffstat (limited to 'libglusterfs/src/spec.y')
| -rw-r--r-- | libglusterfs/src/spec.y | 626 |
1 files changed, 0 insertions, 626 deletions
diff --git a/libglusterfs/src/spec.y b/libglusterfs/src/spec.y deleted file mode 100644 index 805e1e1fbae..00000000000 --- a/libglusterfs/src/spec.y +++ /dev/null @@ -1,626 +0,0 @@ -/* - Copyright (c) 2006-2009 Gluster, Inc. <http://www.gluster.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ - - -%token SECTION_BEGIN SECTION_END OPTION NEWLINE SUBSECTION ID WHITESPACE COMMENT TYPE STRING_TOK - -%{ -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <errno.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <sys/wait.h> - -#include "xlator.h" -#include "logging.h" - -static int new_section (char *name); -static int section_type (char *type); -static int section_option (char *key, char *value); -static int section_sub (char *sub); -static int section_end (void); -static void sub_error (void); -static void type_error (void); -static void option_error (void); - -#define YYSTYPE char * -#define GF_CMD_BUFFER_LEN (8 * GF_UNIT_KB) - -int yyerror (const char *); -int yylex (); -%} - - -%% -SECTIONS: SECTION | SECTIONS SECTION; - -SECTION: SECTION_HEADER SECTION_DATA SECTION_FOOTER; -SECTION_HEADER: SECTION_BEGIN WORD {if( -1 == new_section ($2)) { YYABORT; } }; -SECTION_FOOTER: SECTION_END {if( -1 == section_end ()) { YYABORT; } }; - -SECTION_DATA: TYPE_LINE OPTIONS_LINE SUBSECTION_LINE OPTIONS_LINE | - TYPE_LINE SUBSECTION_LINE OPTIONS_LINE | - TYPE_LINE OPTIONS_LINE SUBSECTION_LINE | - TYPE_LINE SUBSECTION_LINE | - TYPE_LINE OPTIONS_LINE | - OPTIONS_LINE SUBSECTION_LINE OPTIONS_LINE | /* error case */ - OPTIONS_LINE; /* error case */ - -TYPE_LINE: TYPE WORD {if ( -1 == section_type ($2)) { YYABORT; }} | TYPE { type_error(); YYABORT; }; - -SUBSECTION_LINE: SUBSECTION WORDS | SUBSECTION { sub_error (); YYABORT; }; - -OPTIONS_LINE: OPTION_LINE | OPTIONS_LINE OPTION_LINE; - -OPTION_LINE: OPTION WORD WORD {if(-1 == section_option($2,$3)){YYABORT;} } | - OPTION WORD { option_error (); YYABORT; } | - OPTION { option_error (); YYABORT; }; - -WORDS: WORD {if (-1 == section_sub ($1)) {YYABORT; } } | WORDS WORD { if (-1 == section_sub ($2)) { YYABORT; } }; -WORD: ID | STRING_TOK ; -%% - -xlator_t *complete_tree = NULL; -xlator_t *tree = NULL; -glusterfs_ctx_t *gctx; - -static void -type_error (void) -{ - extern int yylineno; - - fprintf (stderr, "Volume '%s', before line %d: Please specify volume 'type'.", - complete_tree->name, yylineno); - gf_log ("parser", GF_LOG_ERROR, - "Volume '%s', before line %d: Please specify volume 'type'.", - complete_tree->name, yylineno); - return; -} - -static void -sub_error (void) -{ - extern int yylineno; - - fprintf (stderr, "Volume %s, before line %d: Please specify subvolumes for the volume. ", - complete_tree->name, yylineno); - gf_log ("parser", GF_LOG_ERROR, - "Volume %s, before line %d: Please specify subvolumes for the volume. ", - complete_tree->name, yylineno); - return; -} - -static void -option_error (void) -{ - extern int yylineno; - - fprintf (stderr, "Volume %s, before line %d: Please specify " - "option <key> <value> \n", - complete_tree->name, yylineno); - gf_log ("parser", GF_LOG_ERROR, - "Volume %s, before line %d: Please specify " - "option <key> <value>", - complete_tree->name, yylineno); - return; -} - -static int -cut_tree (xlator_t *tree) -{ - xlator_t *trav = tree, *prev = tree; - - if (!tree) { - gf_log ("parser", GF_LOG_DEBUG, "Translator tree not found"); - return -1; - } - - gf_log ("parser", GF_LOG_DEBUG, "Failed to build translator graph"); - - while (prev) { - trav = prev->next; - dict_destroy (prev->options); - FREE (prev->name); - FREE (prev); - prev = trav; - } - - return 0; -} - - -static int -new_section (char *name) -{ - extern int yylineno; - xlator_t *trav = complete_tree; - xlator_t *node = NULL; - - node = (void *) calloc (1, sizeof (*node)); - if (!node) { - gf_log ("parser", GF_LOG_ERROR, "Out of memory"); - return -1; - } - - if (!name) { - gf_log ("parser", GF_LOG_DEBUG, - "Invalid argument name: '%s'", name); - FREE (node); - return -1; - } - - while (trav) { - if (!strcmp (name, trav->name)) { - fprintf (stderr, - "Line %d: volume '%s' defined again\n", - yylineno, name); - gf_log ("parser", GF_LOG_ERROR, - "Line %d: volume '%s' defined again", - yylineno, name); - return -1; - } - trav = trav->next; - } - - node->ctx = gctx; - node->name = name; - node->next = complete_tree; - if (complete_tree) - complete_tree->prev = node; - node->options = get_new_dict (); - complete_tree = node; - - tree = node; - gf_log ("parser", GF_LOG_TRACE, "New node for '%s'", name); - - return 0; -} - -static int -section_type (char *type) -{ - extern int yylineno; - int32_t ret = -1; - if (!type) { - gf_log ("parser", GF_LOG_DEBUG, "Invalid argument type"); - return -1; - } - - ret = xlator_set_type (tree, type); - if (ret) { - fprintf (stderr, "Volume '%s', line %d: type '%s' is not " - "valid or not found on this machine\n", - complete_tree->name, yylineno, type); - gf_log ("parser", GF_LOG_ERROR, - "Volume '%s', line %d: type '%s' is not valid or " - "not found on this machine", - complete_tree->name, yylineno, type); - return -1; - } - gf_log ("parser", GF_LOG_TRACE, "Type:%s:%s", tree->name, type); - - return 0; -} - - -static int -section_option (char *key, char *value) -{ - extern int yylineno; - - int ret = 0; - - if (!key || !value){ - fprintf (stderr, "Invalid argument\n"); - gf_log ("parser", GF_LOG_ERROR, "Invalid argument"); - return -1; - } - - ret = dict_set (tree->options, key, str_to_data (value)); - - if (ret == 1) { - gf_log ("parser", GF_LOG_ERROR, - "Volume '%s', line %d: duplicate entry " - "('option %s') present", - tree->name, yylineno, key); - return -1; - } - gf_log ("parser", GF_LOG_TRACE, "Option:%s:%s:%s", - tree->name, key, value); - - return 0; -} - -static int -section_sub (char *sub) -{ - extern int yylineno; - xlator_t *trav = complete_tree; - xlator_list_t *xlchild, *tmp, *xlparent; - - if (!sub) { - fprintf (stderr, "Invalid subvolumes argument\n"); - gf_log ("parser", GF_LOG_ERROR, "Invalid subvolumes argument"); - return -1; - } - - while (trav) { - if (!strcmp (sub, trav->name)) - break; - trav = trav->next; - } - if (!trav) { - fprintf (stderr, - "Volume '%s', line %d: subvolume '%s' is not " - "defined prior to usage\n", - complete_tree->name, yylineno, sub); - gf_log ("parser", GF_LOG_ERROR, - "Volume '%s', line %d: subvolume '%s' is not defined " - "prior to usage", - complete_tree->name, yylineno, sub); - return -1; - } - - if (trav == tree) { - fprintf (stderr, "Volume '%s', line %d: has '%s' itself as " - "subvolume\n", - complete_tree->name, yylineno, sub); - gf_log ("parser", GF_LOG_ERROR, - "Volume '%s', line %d: has '%s' itself as subvolume", - complete_tree->name, yylineno, sub); - return -1; - } - - xlparent = (void *) calloc (1, sizeof (*xlparent)); - if (!xlparent) { - gf_log ("parser", GF_LOG_ERROR, "Out of memory"); - return -1; - } - xlparent->xlator = tree; - - tmp = trav->parents; - if (tmp == NULL) { - trav->parents = xlparent; - } else { - while (tmp->next) - tmp = tmp->next; - tmp->next = xlparent; - } - - xlchild = (void *) calloc (1, sizeof(*xlchild)); - if (!xlchild) { - FREE (xlparent); - gf_log ("parser", GF_LOG_ERROR, "Out of memory"); - return -1; - } - xlchild->xlator = trav; - - tmp = tree->children; - if (tmp == NULL) { - tree->children = xlchild; - } else { - while (tmp->next) - tmp = tmp->next; - tmp->next = xlchild; - } - - gf_log ("parser", GF_LOG_TRACE, "child:%s->%s", tree->name, sub); - - return 0; -} - -static int -section_end (void) -{ - if (!tree->fops) { - fprintf (stderr, - "\"type\" not specified for volume %s\n", tree->name); - gf_log ("parser", GF_LOG_ERROR, - "\"type\" not specified for volume %s", tree->name); - return -1; - } - gf_log ("parser", GF_LOG_TRACE, "end:%s", tree->name); - - tree = NULL; - return 0; -} - -int -yywrap () -{ - return 1; -} - -int -yyerror (const char *str) -{ - extern char *yytext; - extern int yylineno; - - if (complete_tree && complete_tree->name) - { - if (!strcmp (yytext, "volume")) - { - fprintf (stderr, - "'end-volume' not defined for volume '%s'\n", - complete_tree->name); - gf_log ("parser", GF_LOG_ERROR, - "'end-volume' not defined for volume '%s'", - complete_tree->name); - } - else if (!strcmp (yytext, "type")) - { - fprintf (stderr, "line %d: duplicate 'type' defined " - "for volume '%s'", - yylineno, complete_tree->name); - gf_log ("parser", GF_LOG_ERROR, - "line %d: duplicate 'type' defined for " - "volume '%s'", - yylineno, complete_tree->name); - } - else if (!strcmp (yytext, "subvolumes")) - { - fprintf (stderr, "line %d: duplicate 'subvolumes' " - "defined for volume '%s'", - yylineno, complete_tree->name); - gf_log ("parser", GF_LOG_ERROR, - "line %d: duplicate 'subvolumes' defined for " - "volume '%s'", - yylineno, complete_tree->name); - } - else if (tree) - { - fprintf (stderr, - "syntax error: line %d (volume '%s'): \"%s\"" - "\nallowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume'", - yylineno, complete_tree->name, - yytext); - - gf_log ("parser", GF_LOG_ERROR, - "syntax error: line %d (volume '%s'): \"%s\"" - "\nallowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume'()", - yylineno, complete_tree->name, - yytext); - } - else - { - fprintf (stderr, - "syntax error: line %d (just after volume " - "'%s'): \"%s\"\n(%s)", - yylineno, complete_tree->name, - yytext, - "allowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume'"); - gf_log ("parser", GF_LOG_ERROR, - "syntax error: line %d (just after volume " - "'%s'): \"%s\"\n(%s)", - yylineno, complete_tree->name, - yytext, - "allowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume'"); - } - } - else - { - fprintf (stderr, - "syntax error in line %d: \"%s\" \n" - "(allowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume')\n", - yylineno, yytext); - gf_log ("parser", GF_LOG_ERROR, - "syntax error in line %d: \"%s\" \n" - "(allowed tokens are 'volume', 'type', " - "'subvolumes', 'option', 'end-volume')\n", - yylineno, yytext); - } - - cut_tree (tree); - complete_tree = NULL; - return 0; -} - -static int -execute_cmd (char *cmd, char **result, size_t size) -{ - FILE *fpp = NULL; - int i = 0, status = 0; - int character = 0; - char *buf = *result; - - fpp = popen (cmd, "r"); - if (!fpp) { - gf_log ("parser", GF_LOG_ERROR, "%s: failed to popen", cmd); - return -1; - } - - while ((character = fgetc (fpp)) != EOF) { - if (i == size) { - size *= 2; - buf = *result = realloc (*result, size); - } - - buf[i++] = character; - } - - if (i > 0) { - i--; - buf[i] = '\0'; - } - - status = pclose (fpp); - if (status == -1 || !WIFEXITED (status) || - ((WEXITSTATUS (status)) != 0)) { - i = -1; - buf[0] = '\0'; - } - - return i; -} - -static int -parse_backtick (FILE *srcfp, FILE *dstfp) -{ - int ret = 0, i = 0; - char *cmd = NULL, *result = NULL; - size_t cmd_buf_size = GF_CMD_BUFFER_LEN; - char escaped = 0, in_backtick = 0; - int line = 1, column = 0, backtick_line = 0, backtick_column = 0; - int character = 0; - - fseek (srcfp, 0L, SEEK_SET); - fseek (dstfp, 0L, SEEK_SET); - - cmd = CALLOC (cmd_buf_size, 1); - if (cmd == NULL) { - gf_log ("parser", GF_LOG_ERROR, "Out of memory"); - return -1; - } - - result = CALLOC (cmd_buf_size * 2, 1); - if (result == NULL) { - FREE (cmd); - gf_log ("parser", GF_LOG_ERROR, "Out of memory"); - return -1; - } - - while ((character = fgetc (srcfp)) != EOF) { - if ((character == '`') && !escaped) { - if (in_backtick) { - cmd[i] = '\0'; - result[0] = '\0'; - - ret = execute_cmd (cmd, &result, - 2 * cmd_buf_size); - if (ret < 0) { - ret = -1; - goto out; - } - fwrite (result, ret, 1, dstfp); - } else { - i = 0; - cmd[i] = '\0'; - - backtick_column = column; - backtick_line = line; - } - - in_backtick = !in_backtick; - } else { - if (in_backtick) { - if (i == cmd_buf_size) { - cmd_buf_size *= 2; - cmd = realloc (cmd, cmd_buf_size); - if (cmd == NULL) { - return -1; - } - - result = realloc (result, - 2 * cmd_buf_size); - if (result == NULL) { - free (cmd); - return -1; - } - } - - cmd[i++] = character; - } else { - fputc (character, dstfp); - } - } - - if (character == '\\') { - escaped = !escaped; - } else { - escaped = 0; - } - - if (character == '\n') { - line++; - column = 0; - } else { - column++; - } - } - - if (in_backtick) { - gf_log ("parser", GF_LOG_ERROR, - "Unterminated backtick in volume specfication file at line (%d), column (%d).", - line, column); - ret = -1; - } - -out: - fseek (srcfp, 0L, SEEK_SET); - fseek (dstfp, 0L, SEEK_SET); - free (cmd); - free (result); - - return ret; -} - -extern FILE *yyin; -xlator_t * -file_to_xlator_tree (glusterfs_ctx_t *ctx, - FILE *fp) -{ - int32_t ret = 0; - xlator_t *tmp_tree = NULL; - FILE *tmp_file = NULL; - char *buffer = NULL; - - tmp_file = tmpfile (); - if (NULL == tmp_file) { - gf_log ("parser", GF_LOG_ERROR, - "cannot create temparory file"); - return NULL; - } - - ret = parse_backtick (fp, tmp_file); - if (ret < 0) { - gf_log ("parser", GF_LOG_ERROR, - "parsing of backticks failed"); - fclose (tmp_file); - FREE (buffer); - return NULL; - } - - gctx = ctx; - yyin = tmp_file; - ret = yyparse (); - - fclose (tmp_file); - FREE (buffer); - - if (1 == ret) { - gf_log ("parser", GF_LOG_DEBUG, - "parsing of volfile failed, please review it " - "once more"); - tree = complete_tree = NULL; - return NULL; - } - - tmp_tree = complete_tree; - tree = complete_tree = NULL; - - return tmp_tree; -} |