*/
+#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#ifdef HAVE_READLINE
#include <readline.h>
+#endif
#include <signal.h>
#include <unistd.h>
{
printf ("Initializing ...\n");
-
+
if (!process_configuration_file ()) {
fprintf (stderr,"Error - Unable to complete configuration. Quitting.\n");
- return (0);
+ return (0);
};
-
+
general_commands.last_command=-1; /* No commands whatsoever meanwhile */
ext2_commands.last_command=-1;
- add_general_commands (); /* Add the general commands, aviable always */
+ add_general_commands (); /* Add the general commands, available always */
device_handle=NULL; /* Notice that our device is still not set up */
device_offset=-1;
current_type=NULL; /* No filesystem specific types yet */
remember_lifo.entries_count=0; /* Object memory is empty */
-
+
init_windows (); /* Initialize the NCURSES interface */
init_readline (); /* Initialize the READLINE interface */
init_signals (); /* Initialize the signal handlers */
write_access=0; /* Write access disabled */
-
+
strcpy (last_command_line,"help"); /* Show the help screen to the user */
dispatch ("help");
return (1); /* Success */
add_user_command (&general_commands,"help","EXT2ED help system",help);
add_user_command (&general_commands,"set","Changes a variable in the current object",set);
add_user_command (&general_commands,"setdevice","Selects the filesystem block device (e.g. /dev/hda1)",set_device);
- add_user_command (&general_commands,"setoffset","Moves asynchronicly in the filesystem",set_offset);
- add_user_command (&general_commands,"settype","Tells EXT2ED how to interpert the current object",set_type);
+ add_user_command (&general_commands,"setoffset","Moves asynchronously in the filesystem",set_offset);
+ add_user_command (&general_commands,"settype","Tells EXT2ED how to interpret the current object",set_type);
add_user_command (&general_commands,"show","Displays the current object",show);
add_user_command (&general_commands,"pgup","Scrolls data one page up",pgup);
add_user_command (&general_commands,"pgdn","Scrolls data one page down",pgdn);
char current_line [500],current_word [50],*ch;
char variable_name [50],variable_type [20];
struct struct_descriptor *current_descriptor;
-
+
if ( (fp=fopen (file_name,"rt"))==NULL) {
wprintw (command_win,"Error - Failed to open descriptors file %s\n",file_name);
refresh_command_win (); return (0);
};
-
+
while (!feof (fp)) {
fgets (current_line,500,fp);
- if (feof (fp)) break;
+ if (feof (fp)) break;
ch=parse_word (current_line,current_word);
if (strcmp (current_word,"struct")==0) {
ch=parse_word (ch,current_word);
current_descriptor=add_new_descriptor (current_word);
-
+
while (strchr (current_line,'{')==NULL) {
fgets (current_line,500,fp);
if (feof (fp)) break;
};
if (feof (fp)) break;
-
+
fgets (current_line,500,fp);
while (strchr (current_line,'}')==NULL) {
add_new_variable (current_descriptor,variable_type,variable_name);
fgets (current_line,500,fp);
};
- };
+ };
};
-
+
fclose (fp);
return (1);
}
{
struct struct_descriptor *ptr,*next;
-
+
ptr=first_type;
while (ptr!=NULL) {
next=ptr->next;
{
int i;
-
+
for (i=0;i<=ptr->last_command;i++) {
free (ptr->names [i]);
free (ptr->descriptions [i]);
}
-
+
ptr->last_command=-1;
}
{
struct struct_descriptor *ptr;
-
- if (first_type==NULL) {
- first_type=last_type=ptr=(struct struct_descriptor *) malloc (sizeof (struct struct_descriptor));
- if (ptr==NULL) {
- printf ("Error - Can not allocate memory - Quitting\n");
- exit (1);
- }
- ptr->prev=ptr->next=NULL;
- strcpy (ptr->name,name);
- ptr->length=0;
- ptr->fields_num=0;
- ptr->type_commands.last_command=-1;
- fill_type_commands (ptr);
+
+ ptr = malloc (sizeof (struct struct_descriptor));
+ if (ptr == NULL) {
+ printf ("Error - Can not allocate memory - Quitting\n");
+ exit (1);
}
- else {
- ptr=(struct struct_descriptor *) malloc (sizeof (struct struct_descriptor));
- if (ptr==NULL) {
- printf ("Error - Can not allocate memory - Quitting\n");
- exit (1);
- }
- ptr->prev=last_type;last_type->next=ptr;last_type=ptr;
- strcpy (ptr->name,name);
- ptr->length=0;
- ptr->fields_num=0;
- ptr->type_commands.last_command=-1;
- fill_type_commands (ptr);
+ memset(ptr, 0, sizeof(struct struct_descriptor));
+ ptr->prev = ptr->next = NULL;
+ strcpy (ptr->name,name);
+ ptr->length=0;
+ ptr->fields_num=0;
+ if (first_type==NULL) {
+ first_type = last_type = ptr;
+ } else {
+ ptr->prev = last_type; last_type->next = ptr; last_type=ptr;
}
+ ptr->type_commands.last_command=-1;
+ fill_type_commands (ptr);
return (ptr);
}
+struct type_table {
+ char *name;
+ int field_type;
+ int len;
+};
+
+struct type_table type_table[] = {
+ { "long", FIELD_TYPE_INT, 4 },
+ { "short", FIELD_TYPE_INT, 2 },
+ { "char", FIELD_TYPE_CHAR, 1 },
+ { "__u32", FIELD_TYPE_UINT, 4 },
+ { "__s32", FIELD_TYPE_INT, 4 },
+ { "__u16", FIELD_TYPE_UINT, 2 },
+ { "__s16", FIELD_TYPE_INT, 2 },
+ { "__u8", FIELD_TYPE_UINT, 1 },
+ { "__s8", FIELD_TYPE_INT, 1 },
+ { 0, 0, 0 }
+};
+
void add_new_variable (struct struct_descriptor *ptr,char *v_type,char *v_name)
{
- short len=1;
-
+ short len=1;
+ char field_type=FIELD_TYPE_INT;
+ struct type_table *p;
+
strcpy (ptr->field_names [ptr->fields_num],v_name);
ptr->field_positions [ptr->fields_num]=ptr->length;
-
- if (strcasecmp (v_type,"long")==0) len=4;
- if (strcasecmp (v_type,"__u32")==0) len=4;
- if (strcasecmp (v_type,"__s32")==0) len=4;
-
- if (strcasecmp (v_type,"__u16")==0) len=2;
- if (strcasecmp (v_type,"__s16")==0) len=2;
- if (strcasecmp (v_type,"short")==0) len=2;
- if (strcasecmp (v_type,"int")==0) len=2;
-
- if (strcasecmp (v_type,"__u8")==0) len=1;
- if (strcasecmp (v_type,"__s8")==0) len=1;
- if (strcasecmp (v_type,"char")==0) len=1;
-
- ptr->field_lengths [ptr->fields_num]=len;
+
+ for (p = type_table; p->name; p++) {
+ if (strcmp(v_type, p->name) == 0) {
+ len = p->len;
+ field_type = p->field_type;
+ break;
+ }
+ }
+ if (p->name == 0) {
+ if (strncmp(v_type, "char[", 5) == 0) {
+ len = atoi(v_type+5);
+ field_type = FIELD_TYPE_CHAR;
+ } else {
+ printf("Unknown type %s for field %s\n", v_type, v_name);
+ exit(1);
+ }
+ }
+
+ ptr->field_lengths [ptr->fields_num] = len;
+ ptr->field_types [ptr->fields_num] = field_type;
ptr->length+=len;
- ptr->fields_num++;
+ ptr->fields_num++;
}
void fill_type_commands (struct struct_descriptor *ptr)
add_user_command (&ptr->type_commands,"file","Display file data of the current inode",type_ext2_inode___file);
add_user_command (&ptr->type_commands,"dir","Display directory data of the current inode",type_ext2_inode___dir);
}
-
+
if (strcmp ((ptr->name),"dir")==0) {
add_user_command (&ptr->type_commands,"show","Shows current directory data",type_dir___show);
add_user_command (&ptr->type_commands,"inode","Returns to the inode of the current directory",type_dir___inode);
add_user_command (&ptr->type_commands,"writedata","Writes the current entry to the disk",type_dir___writedata);
add_user_command (&ptr->type_commands,"set","Changes a variable in the current directory entry",type_dir___set);
}
-
+
if (strcmp ((ptr->name),"ext2_super_block")==0) {
add_user_command (&ptr->type_commands,"show","Displays the super block data",type_ext2_super_block___show);
add_user_command (&ptr->type_commands,"gocopy","Move to another backup copy of the superblock",type_ext2_super_block___gocopy);
}
if (strcmp ((ptr->name),"ext2_group_desc")==0) {
- add_user_command (&ptr->type_commands,"next","Pass to the next block group decriptor",type_ext2_group_desc___next);
+ add_user_command (&ptr->type_commands,"next","Pass to the next block group descriptor",type_ext2_group_desc___next);
add_user_command (&ptr->type_commands,"prev","Pass to the previous group descriptor",type_ext2_group_desc___prev);
add_user_command (&ptr->type_commands,"entry","Pass to a specific group descriptor",type_ext2_group_desc___entry);
add_user_command (&ptr->type_commands,"show","Shows the current group descriptor",type_ext2_group_desc___show);
add_user_command (&ptr->type_commands,"allocate","Allocates the current inode",type_ext2_inode_bitmap___allocate);
add_user_command (&ptr->type_commands,"deallocate","Deallocates the current inode",type_ext2_inode_bitmap___deallocate);
}
-
+
}
void add_user_command (struct struct_commands *ptr,char *name,char *description,PF callback)
{
int num;
-
+
num=ptr->last_command;
if (num+1==MAX_COMMANDS_NUM) {
printf ("Internal Error - Can't add command %s\n",name);
return;
}
-
+
ptr->last_command=++num;
ptr->names [num]=(char *) malloc (strlen (name)+1);
strcpy (ptr->names [num],name);
-
+
if (*description!=0) {
ptr->descriptions [num]=(char *) malloc (strlen (description)+1);
strcpy (ptr->descriptions [num],description);
}
-
+
ptr->callback [num]=callback;
}
{
int ext2_detected=0;
struct ext2_super_block *sb;
-
+
file_system_info.super_block_offset=1024;
file_system_info.file_system_size=DefaultTotalBlocks*DefaultBlockSize;
sb=&file_system_info.super_block;
- if (sb->s_magic == EXT2_SUPER_MAGIC)
+ if (sb->s_magic == EXT2_SUPER_MAGIC)
ext2_detected=1;
if (ext2_detected)
if (ForceExt2 && !ext2_detected)
wprintw (command_win,"Forcing extended 2 filesystem\n");
-
+
if (ForceDefault || !ext2_detected)
wprintw (command_win,"Forcing default parameters\n");
if (!set_struct_descriptors (Ext2Descriptors))
return (0);
}
-
+
if (!ForceDefault && ext2_detected) {
-
+
file_system_info.block_size=EXT2_MIN_BLOCK_SIZE << sb->s_log_block_size;
if (file_system_info.block_size == EXT2_MIN_BLOCK_SIZE)
file_system_info.first_group_desc_offset=2*EXT2_MIN_BLOCK_SIZE;
else
file_system_info.first_group_desc_offset=file_system_info.block_size;
- file_system_info.groups_count=( sb->s_blocks_count-sb->s_first_data_block+sb->s_blocks_per_group-1) /
- sb->s_blocks_per_group;
-
+ file_system_info.groups_count = ext2fs_div64_ceil(ext2fs_blocks_count(sb),
+ sb->s_blocks_per_group);
+
file_system_info.inodes_per_block=file_system_info.block_size/sizeof (struct ext2_inode);
file_system_info.blocks_per_group=sb->s_inodes_per_group/file_system_info.inodes_per_block;
file_system_info.no_blocks_in_group=sb->s_blocks_per_group;
- file_system_info.file_system_size=(sb->s_blocks_count-1)*file_system_info.block_size;
+ file_system_info.file_system_size=(ext2fs_blocks_count(sb)-1)*file_system_info.block_size;
}
else {
file_system_info.file_system_size=DefaultTotalBlocks*DefaultBlockSize;
- file_system_info.block_size=DefaultBlockSize;
+ file_system_info.block_size=DefaultBlockSize;
file_system_info.no_blocks_in_group=DefaultBlocksInGroup;
}
-
+
if (file_system_info.file_system_size > 2147483647) {
wprintw (command_win,"Sorry, filesystems bigger than 2 GB are currently not supported\n");
return (0);
void init_readline (void)
{
+#ifdef HAVE_READLINE
rl_completion_entry_function=(Function *) complete_command;
+#endif
}
void init_signals (void)
signal (SIGWINCH, signal_SIGWINCH_handler); /* Catch SIGWINCH */
signal (SIGTERM, signal_SIGTERM_handler);
signal (SIGSEGV, signal_SIGSEGV_handler);
-
+
}
void signal_SIGWINCH_handler (int sig_num)
{
- redraw_request=1; /* We will handle it in main.c */
+ redraw_request=1; /* We will handle it in main.c */
+
+ /* Reset signal handler */
+ signal (SIGWINCH, signal_SIGWINCH_handler);
+
}
void signal_SIGTERM_handler (int sig_num)
{
prepare_to_close ();
- printf ("Killed by signal %d !\n",sig_num);
+ printf ("Killed by signal %d!\n",sig_num);
exit (1);
}
char option [80],value [80];
FILE *fp;
- strcpy (buffer,VAR_DIR);
+ strcpy (buffer, ROOT_SYSCONFDIR);
strcat (buffer,"/ext2ed.conf");
-
+
if ((fp=fopen (buffer,"rt"))==NULL) {
fprintf (stderr,"Error - Unable to open configuration file %s\n",buffer);
return (0);
}
-
+
while (get_next_option (fp,option,value)) {
if (strcasecmp (option,"Ext2Descriptors")==0) {
strcpy (Ext2Descriptors,value);
fclose (fp);return (0);
}
}
-
+
else {
fprintf (stderr,"Error - Unknown option: %s\n",option);
fclose (fp);return (0);
{
char *ptr;
char buffer [600];
-
+
if (feof (fp)) return (0);
do{
if (feof (fp)) return (0);
fgets (buffer,500,fp);
} while (buffer [0]=='#' || buffer [0]=='\n');
-
+
ptr=parse_word (buffer,option);
ptr=parse_word (ptr,value);
return (1);
char current_line [500],current_word [200];
mounted=0;
-
+
if ( (fp=fopen ("/etc/mtab","rt"))==NULL) {
wprintw (command_win,"Error - Failed to open /etc/mtab. Assuming filesystem is mounted.\n");
refresh_command_win ();mounted=1;return;
};
-
+
while (!feof (fp)) {
fgets (current_line,500,fp);
- if (feof (fp)) break;
+ if (feof (fp)) break;
ptr=parse_word (current_line,current_word);
if (strcasecmp (current_word,name)==0) {
mounted=1;fclose (fp);return;
};
fclose (fp);
-
- return;
+
+ return;
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff