existing attributes of the files; `-' causes them to be removed; and
`=' causes them to be the only attributes that the files have.
.PP
-The letters `ASacdisu' select the new attributes for the files:
+The letters `ASacdijsu' select the new attributes for the files:
don't update atime (A), synchronous updates (S), append only (a),
-compressed (c), immutable (i), no dump (d),
+compressed (c), no dump (d), immutable (i), data journalling (j),
secure deletion (s), and undeletable (u).
.SH OPTIONS
.TP
renamed, no link can be created to this file and no data can be written
to the file. Only the superuser can set or clear this attribute.
.PP
+A file with the `j' attribute has all of its data written to the ext3
+journal before being written to the file itself, if the filesystem is
+mounted with the "data=ordered" or "data=writeback" options. When the
+filesystem is mounted with the "data=journalled" option all file data
+is already journalled and this attribute has no effect.
+.PP
When a file with the `s' attribute set is deleted, its blocks are zeroed and
written back to the disk.
.PP
was written by Remy Card <Remy.Card@linux.org>.
.SH BUGS AND LIMITATIONS
As of Linux 2.2, the `c', 's', and `u' attribute are not honored
-by the kernel code.
+by the kernel filesystem code. These attributes will be implemented
+in a future ext2 fs version.
.PP
-These attributes will be implemented in a future ext2 fs version.
+The `j' option is only useful if the filesystem is mounted as ext3.
.SH AVAILABILITY
.B chattr
is part of the e2fsprogs package and is available for anonymous
static const char * program_name = "chattr";
-static int add = 0;
-static int rem = 0;
-static int set = 0;
-static int set_version = 0;
+static int add;
+static int rem;
+static int set;
+static int set_version;
static unsigned long version;
-static int recursive = 0;
-static int verbose = 0;
+static int recursive;
+static int verbose;
static unsigned long af;
static unsigned long rf;
exit (errcode);
}
-#define usage() fatal_error(_("usage: %s [-RV] [-+=AacdisSu] [-v version] files...\n"), \
+#define usage() fatal_error(_("usage: %s [-RV] [-+=AacdijsSu] [-v version] files...\n"), \
1)
+struct flags_char {
+ unsigned long flag;
+ char optchar;
+};
+
+static const struct flags_char flags_array[] = {
+ { EXT2_NOATIME_FL, 'A' },
+ { EXT2_SYNC_FL, 'S' },
+ { EXT2_APPEND_FL, 'a' },
+ { EXT2_COMPR_FL, 'c' },
+ { EXT2_NODUMP_FL, 'd' },
+ { EXT2_IMMUTABLE_FL, 'i' },
+ { EXT3_JOURNAL_DATA_FL, 'j' },
+ { EXT2_SECRM_FL, 's' },
+ { EXT2_UNRM_FL, 'u' },
+ { 0, 0 }
+};
+
+static unsigned long get_flag(char c)
+{
+ const struct flags_char *fp;
+
+ for (fp = flags_array; fp->flag != 0; fp++) {
+ if (fp->optchar == c)
+ return fp->flag;
+ }
+ return 0;
+}
+
+
static int decode_arg (int * i, int argc, char ** argv)
{
char * p;
char * tmp;
+ unsigned long fl;
switch (argv[*i][0])
{
case '-':
- for (p = &argv[*i][1]; *p; p++)
- switch (*p)
- {
- case 'A':
- rf |= EXT2_NOATIME_FL;
- rem = 1;
- break;
- case 'R':
+ for (p = &argv[*i][1]; *p; p++) {
+ if (*p == 'R') {
recursive = 1;
- break;
- case 'S':
- rf |= EXT2_SYNC_FL;
- rem = 1;
- break;
- case 'V':
+ continue;
+ }
+ if (*p == 'V') {
verbose = 1;
- break;
- case 'a':
- rf |= EXT2_APPEND_FL;
- rem = 1;
- break;
- case 'c':
- rf |= EXT2_COMPR_FL;
- rem = 1;
- break;
- case 'd':
- rf |= EXT2_NODUMP_FL;
- rem = 1;
- break;
- case 'i':
- rf |= EXT2_IMMUTABLE_FL;
- rem = 1;
- break;
- case 's':
- rf |= EXT2_SECRM_FL;
- rem = 1;
- break;
- case 'u':
- rf |= EXT2_UNRM_FL;
- rem = 1;
- break;
- case 'v':
+ continue;
+ }
+ if (*p == 'v') {
(*i)++;
if (*i >= argc)
usage ();
version = strtol (argv[*i], &tmp, 0);
- if (*tmp)
- {
+ if (*tmp) {
com_err (program_name, 0,
- _("bad version - %s\n"), argv[*i]);
+ _("bad version - %s\n"),
+ argv[*i]);
usage ();
}
set_version = 1;
- break;
- default:
- fprintf (stderr, _("%s: Unrecognized argument: %c\n"),
- program_name, *p);
- usage ();
+ continue;
}
+ if ((fl = get_flag(*p)) == 0)
+ usage();
+ rf |= fl;
+ rem = 1;
+ }
break;
case '+':
add = 1;
- for (p = &argv[*i][1]; *p; p++)
- switch (*p)
- {
- case 'A':
- af |= EXT2_NOATIME_FL;
- break;
- case 'S':
- af |= EXT2_SYNC_FL;
- break;
- case 'a':
- af |= EXT2_APPEND_FL;
- break;
- case 'c':
- af |= EXT2_COMPR_FL;
- break;
- case 'd':
- af |= EXT2_NODUMP_FL;
- break;
- case 'i':
- af |= EXT2_IMMUTABLE_FL;
- break;
- case 's':
- af |= EXT2_SECRM_FL;
- break;
- case 'u':
- af |= EXT2_UNRM_FL;
- break;
- default:
- usage ();
- }
+ for (p = &argv[*i][1]; *p; p++) {
+ if ((fl = get_flag(*p)) == 0)
+ usage();
+ af |= fl;
+ }
break;
case '=':
set = 1;
- for (p = &argv[*i][1]; *p; p++)
- switch (*p)
- {
- case 'A':
- sf |= EXT2_NOATIME_FL;
- break;
- case 'S':
- sf |= EXT2_SYNC_FL;
- break;
- case 'a':
- sf |= EXT2_APPEND_FL;
- break;
- case 'c':
- sf |= EXT2_COMPR_FL;
- break;
- case 'd':
- sf |= EXT2_NODUMP_FL;
- break;
- case 'i':
- sf |= EXT2_IMMUTABLE_FL;
- break;
- case 's':
- sf |= EXT2_SECRM_FL;
- break;
- case 'u':
- sf |= EXT2_UNRM_FL;
- break;
- default:
- usage ();
- }
+ for (p = &argv[*i][1]; *p; p++) {
+ if ((fl = get_flag(*p)) == 0)
+ usage();
+ sf |= fl;
+ }
break;
default:
return EOF;
git://git.whamcloud.com / tools / e2fsprogs.git / commitdiff