/*
* feature.c --- convert between features and strings
- *
+ *
* Copyright (C) 1999 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- *
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "e2p.h"
+#include <ext2fs/ext2fs.h>
+#include <ext2fs/jfs_user.h>
struct feature {
int compat;
"resize_inode" },
{ E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_LAZY_BG,
"lazy_bg" },
+ { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP,
+ "snapshot_bitmap" },
{ E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER,
"sparse_super" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_HUGE_FILE,
"huge_file" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_GDT_CSUM,
- "gdt_checksum" },
+ "uninit_bg" },
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_GDT_CSUM,
+ "uninit_groups" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_DIR_NLINK,
"dir_nlink" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE,
"extra_isize" },
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_QUOTA,
+ "quota" },
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_BIGALLOC,
+ "bigalloc"},
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM,
+ "metadata_csum"},
{ E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_COMPRESSION,
"compression" },
"needs_recovery" },
{ E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_JOURNAL_DEV,
"journal_dev" },
+ { E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_EXTENTS,
+ "extent" },
{ E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_EXTENTS,
"extents" },
{ E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_META_BG,
"meta_bg" },
- { E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_EXTENTS,
- "extent" },
{ E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_64BIT,
"64bit" },
{ E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG,
{ 0, 0, 0 },
};
+static struct feature jrnl_feature_list[] = {
+ { E2P_FEATURE_COMPAT, JFS_FEATURE_COMPAT_CHECKSUM,
+ "journal_checksum" },
+
+ { E2P_FEATURE_INCOMPAT, JFS_FEATURE_INCOMPAT_REVOKE,
+ "journal_incompat_revoke" },
+ { E2P_FEATURE_INCOMPAT, JFS_FEATURE_INCOMPAT_ASYNC_COMMIT,
+ "journal_async_commit" },
+ { 0, 0, 0 },
+};
+
const char *e2p_feature2string(int compat, unsigned int mask)
{
struct feature *f;
return 0;
}
+const char *e2p_jrnl_feature2string(int compat, unsigned int mask)
+{
+ struct feature *f;
+ static char buf[20];
+ char fchar;
+ int fnum;
+
+ for (f = jrnl_feature_list; f->string; f++) {
+ if ((compat == f->compat) &&
+ (mask == f->mask))
+ return f->string;
+ }
+ switch (compat) {
+ case E2P_FEATURE_COMPAT:
+ fchar = 'C';
+ break;
+ case E2P_FEATURE_INCOMPAT:
+ fchar = 'I';
+ break;
+ case E2P_FEATURE_RO_INCOMPAT:
+ fchar = 'R';
+ break;
+ default:
+ fchar = '?';
+ break;
+ }
+ for (fnum = 0; mask >>= 1; fnum++);
+ sprintf(buf, "FEATURE_%c%d", fchar, fnum);
+ return buf;
+}
+
+int e2p_jrnl_string2feature(char *string, int *compat_type, unsigned int *mask)
+{
+ struct feature *f;
+ char *eptr;
+ int num;
+
+ for (f = jrnl_feature_list; f->string; f++) {
+ if (!strcasecmp(string, f->string)) {
+ *compat_type = f->compat;
+ *mask = f->mask;
+ return 0;
+ }
+ }
+ if (strncasecmp(string, "FEATURE_", 8))
+ return 1;
+
+ switch (string[8]) {
+ case 'c':
+ case 'C':
+ *compat_type = E2P_FEATURE_COMPAT;
+ break;
+ case 'i':
+ case 'I':
+ *compat_type = E2P_FEATURE_INCOMPAT;
+ break;
+ case 'r':
+ case 'R':
+ *compat_type = E2P_FEATURE_RO_INCOMPAT;
+ break;
+ default:
+ return 1;
+ }
+ if (string[9] == 0)
+ return 1;
+ num = strtol(string+9, &eptr, 10);
+ if (num > 32 || num < 0)
+ return 1;
+ if (*eptr)
+ return 1;
+ *mask = 1 << num;
+ return 0;
+}
static char *skip_over_blanks(char *cp)
{
while (*cp && isspace(*cp))
/*
* Edit a feature set array as requested by the user. The ok_array,
* if set, allows the application to limit what features the user is
- * allowed to set or clear using this function.
+ * allowed to set or clear using this function. If clear_ok_array is set,
+ * then use it tell whether or not it is OK to clear a filesystem feature.
*/
-int e2p_edit_feature(const char *str, __u32 *compat_array, __u32 *ok_array)
+int e2p_edit_feature2(const char *str, __u32 *compat_array, __u32 *ok_array,
+ __u32 *clear_ok_array, int *type_err,
+ unsigned int *mask_err)
{
char *cp, *buf, *next;
int neg;
int compat_type;
int rc = 0;
+ if (!clear_ok_array)
+ clear_ok_array = ok_array;
+
+ if (type_err)
+ *type_err = 0;
+ if (mask_err)
+ *mask_err = 0;
+
buf = malloc(strlen(str)+1);
if (!buf)
return 1;
neg = 0;
cp = skip_over_blanks(cp);
next = skip_over_word(cp);
-
+
if (*next == 0)
next = 0;
else
case '-':
case '^':
neg++;
+ /* fallthrough */
case '+':
cp++;
break;
rc = 1;
break;
}
- if (ok_array && !(ok_array[compat_type] & mask)) {
- rc = 1;
- break;
- }
- if (neg)
+ if (neg) {
+ if (clear_ok_array &&
+ !(clear_ok_array[compat_type] & mask)) {
+ rc = 1;
+ if (type_err)
+ *type_err = (compat_type |
+ E2P_FEATURE_NEGATE_FLAG);
+ if (mask_err)
+ *mask_err = mask;
+ break;
+ }
compat_array[compat_type] &= ~mask;
- else
+ } else {
+ if (ok_array && !(ok_array[compat_type] & mask)) {
+ rc = 1;
+ if (type_err)
+ *type_err = compat_type;
+ if (mask_err)
+ *mask_err = mask;
+ break;
+ }
compat_array[compat_type] |= mask;
+ }
}
free(buf);
return rc;
}
+
+int e2p_edit_feature(const char *str, __u32 *compat_array, __u32 *ok_array)
+{
+ return e2p_edit_feature2(str, compat_array, ok_array, 0, 0, 0);
+}
+
+#ifdef TEST_PROGRAM
+int main(int argc, char **argv)
+{
+ int compat, compat2, i;
+ unsigned int mask, mask2;
+ const char *str;
+ struct feature *f;
+
+ for (i = 0; i < 2; i++) {
+ if (i == 0) {
+ f = feature_list;
+ printf("Feature list:\n");
+ } else {
+ printf("\nJournal feature list:\n");
+ f = jrnl_feature_list;
+ }
+ for (; f->string; f++) {
+ if (i == 0) {
+ e2p_string2feature((char *)f->string, &compat,
+ &mask);
+ str = e2p_feature2string(compat, mask);
+ } else {
+ e2p_jrnl_string2feature((char *)f->string,
+ &compat, &mask);
+ str = e2p_jrnl_feature2string(compat, mask);
+ }
+
+ printf("\tCompat = %d, Mask = %u, %s\n",
+ compat, mask, f->string);
+ if (strcmp(f->string, str)) {
+ if (e2p_string2feature((char *) str, &compat2,
+ &mask2) ||
+ (compat2 != compat) ||
+ (mask2 != mask)) {
+ fprintf(stderr, "Failure!\n");
+ exit(1);
+ }
+ }
+ }
+ }
+ exit(0);
+}
+#endif
projects / thirdparty / e2fsprogs.git / blobdiff