blob: 70c5d3f780679b57ca0321cc92713a7447b17d52 [file] [log] [blame]
Theodore Ts'o3839e651997-04-26 13:21:57 +00001/*
2 * util.c --- utilities for the debugfs program
3 *
4 * Copyright (C) 1993, 1994 Theodore Ts'o. This file may be
5 * redistributed under the terms of the GNU Public License.
6 *
7 */
8
9#include <stdio.h>
10#include <unistd.h>
11#include <stdlib.h>
12#include <ctype.h>
13#include <string.h>
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000014#include <time.h>
Theodore Ts'o2c4a5402000-08-19 17:33:28 +000015#include <signal.h>
Theodore Ts'o3839e651997-04-26 13:21:57 +000016
17#include "debugfs.h"
18
19FILE *open_pager(void)
20{
21 FILE *outfile;
22 char *pager = getenv("PAGER");
23
Theodore Ts'o2c4a5402000-08-19 17:33:28 +000024 signal(SIGPIPE, SIG_IGN);
Theodore Ts'o3839e651997-04-26 13:21:57 +000025 if (!pager)
Theodore Ts'oc6bd0c92000-08-14 20:37:09 +000026 pager = "more";
27
28 outfile = popen(pager, "w");
29 if (!outfile)
Theodore Ts'o3839e651997-04-26 13:21:57 +000030 outfile = stdout;
Theodore Ts'oc6bd0c92000-08-14 20:37:09 +000031
Theodore Ts'o3839e651997-04-26 13:21:57 +000032 return (outfile);
33}
34
35void close_pager(FILE *stream)
36{
37 if (stream && stream != stdout) fclose(stream);
38}
39
40/*
41 * This routine is used whenever a command needs to turn a string into
42 * an inode.
43 */
44ino_t string_to_inode(char *str)
45{
46 ino_t ino;
47 int len = strlen(str);
Theodore Ts'o9131a752000-08-23 04:36:25 +000048 char *end;
Theodore Ts'o3839e651997-04-26 13:21:57 +000049 int retval;
50
51 /*
52 * If the string is of the form <ino>, then treat it as an
53 * inode number.
54 */
55 if ((len > 2) && (str[0] == '<') && (str[len-1] == '>')) {
Theodore Ts'o9131a752000-08-23 04:36:25 +000056 ino = strtoul(str+1, &end, 0);
57 if (*end=='>')
58 return ino;
Theodore Ts'o3839e651997-04-26 13:21:57 +000059 }
60
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000061 retval = ext2fs_namei(current_fs, root, cwd, str, &ino);
Theodore Ts'o3839e651997-04-26 13:21:57 +000062 if (retval) {
63 com_err(str, retval, "");
64 return 0;
65 }
66 return ino;
67}
68
69/*
70 * This routine returns 1 if the filesystem is not open, and prints an
71 * error message to that effect.
72 */
73int check_fs_open(char *name)
74{
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000075 if (!current_fs) {
Theodore Ts'o3839e651997-04-26 13:21:57 +000076 com_err(name, 0, "Filesystem not open");
77 return 1;
78 }
79 return 0;
80}
81
82/*
83 * This routine returns 1 if a filesystem is open, and prints an
84 * error message to that effect.
85 */
86int check_fs_not_open(char *name)
87{
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000088 if (current_fs) {
Theodore Ts'o3839e651997-04-26 13:21:57 +000089 com_err(name, 0,
90 "Filesystem %s is still open. Close it first.\n",
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000091 current_fs->device_name);
Theodore Ts'o3839e651997-04-26 13:21:57 +000092 return 1;
93 }
94 return 0;
95}
96
Theodore Ts'o1e3472c1997-04-29 14:53:37 +000097/*
98 * This routine returns 1 if a filesystem is not opened read/write,
99 * and prints an error message to that effect.
100 */
101int check_fs_read_write(char *name)
102{
103 if (!(current_fs->flags & EXT2_FLAG_RW)) {
104 com_err(name, 0, "Filesystem opened read/only");
105 return 1;
106 }
107 return 0;
108}
109
110/*
Theodore Ts'od61f6172000-05-27 16:04:00 +0000111 * This routine returns 1 if a filesystem is doesn't have its inode
112 * and block bitmaps loaded, and prints an error message to that
113 * effect.
114 */
115int check_fs_bitmaps(char *name)
116{
117 if (!current_fs->block_map || !current_fs->inode_map) {
118 com_err(name, 0, "Filesystem bitmaps not loaded");
119 return 1;
120 }
121 return 0;
122}
123
124/*
Theodore Ts'o1e3472c1997-04-29 14:53:37 +0000125 * This function takes a __u32 time value and converts it to a string,
126 * using ctime
127 */
128char *time_to_string(__u32 cl)
129{
130 time_t t = (time_t) cl;
131
132 return ctime(&t);
133}
134
135
136
137