char *
parse_name (char const *s, int strip_leading, char const **endp)
{
char *ret;
while (ISSPACE ((unsigned char) *s))
s++;
if (*s == '"')
ret = parse_c_string (s, endp);
else
{
char const *t;
for (t = s; *t && ! ISSPACE ((unsigned char) *t); t++)
/* do nothing*/ ;
ret = savebuf (s, t - s + 1);
ret[t - s] = 0;
if (endp)
*endp = t;
}
if (! strip_leading_slashes (ret, strip_leading))
{
free (ret);
ret = NULL;
}
return ret;
}
void
fetchname (char const *at, int strip_leading, char **pname,
char **ptimestr, struct timespec *pstamp)
{
char *name;
const char *t;
char *timestr = NULL;
struct timespec stamp;
stamp.tv_sec = -1;
stamp.tv_nsec = 0;
while (ISSPACE ((unsigned char) *at))
at++;
if (debug & 128)
say ("fetchname %s %d\n", at, strip_leading);
if (*at == '"')
{
name = parse_c_string (at, &t);
if (! name)
{
if (debug & 128)
say ("ignoring malformed filename %s\n", quotearg (at));
return;
}
}
else
{
for (t = at; *t; t++)
{
if (ISSPACE ((unsigned char) *t))
{
/* Allow file names with internal spaces,
but only if a tab separates the file name from the date. */
char const *u = t;
while (*u != '\t' && ISSPACE ((unsigned char) u[1]))
u++;
if (*u != '\t' && (strchr (u + 1, pstamp ? '\t' : '\n')))
continue;
break;
}
}
name = savebuf (at, t - at + 1);
name[t - at] = 0;
}
/* If the name is "/dev/null", ignore the name and mark the file
as being nonexistent. The name "/dev/null" appears in patches
regardless of how NULL_DEVICE is spelled. */
if (strcmp (name, "/dev/null") == 0)
{
free (name);
if (pstamp)
{
pstamp->tv_sec = 0;
pstamp->tv_nsec = 0;
}
return;
}
/* Ignore the name if it doesn't have enough slashes to strip off. */
if (! strip_leading_slashes (name, strip_leading))
{
free (name);
return;
}
if (ptimestr)
{
char const *u = t + strlen (t);
if (u != t && *(u-1) == '\n')
u--;
if (u != t && *(u-1) == '\r')
u--;
timestr = savebuf (t, u - t + 1);
timestr[u - t] = 0;
}
if (*t != '\n')
{
if (! pstamp)
{
free (name);
free (timestr);
return;
}
if (set_time | set_utc)
get_date (&stamp, t, &initial_time);
else
{
/* The head says the file is nonexistent if the
timestamp is the epoch; but the listed time is
local time, not UTC, and POSIX.1 allows local
time offset anywhere in the range -25:00 <
offset < +26:00. Match any time in that range. */
const struct timespec lower = { -25L * 60 * 60 },
upper = { 26L * 60 * 60 };
if (get_date (&stamp, t, &initial_time)
&& timespec_cmp (stamp, lower) > 0
&& timespec_cmp (stamp, upper) < 0) {
stamp.tv_sec = 0;
stamp.tv_nsec = 0;
}
}
}
free (*pname);
*pname = name;
if (ptimestr)
{
free (*ptimestr);
*ptimestr = timestr;
}
if (pstamp)
*pstamp = stamp;
}
void do_set_xattr(int argc, char **argv)
{
ext2_ino_t ino;
struct ext2_xattr_handle *h;
FILE *fp = NULL;
char *buf = NULL;
size_t buflen;
unsigned int handle_flags = 0;
int i;
errcode_t err;
reset_getopt();
while ((i = getopt(argc, argv, "f:r")) != -1) {
switch (i) {
case 'f':
if (fp)
fclose(fp);
fp = fopen(optarg, "r");
if (fp == NULL) {
perror(optarg);
return;
}
break;
case 'r':
handle_flags |= XATTR_HANDLE_FLAG_RAW;
break;
default:
goto print_usage;
}
}
if (!(fp && optind == argc - 2) && !(!fp && optind == argc - 3)) {
print_usage:
printf("Usage:\t%s [-r] <file> <attr> <value>\n", argv[0]);
printf("\t%s -f <value_file> [-r] <file> <attr>\n", argv[0]);
goto out2;
}
if (check_fs_open(argv[0]))
goto out2;
if (check_fs_read_write(argv[0]))
goto out2;
if (check_fs_bitmaps(argv[0]))
goto out2;
ino = string_to_inode(argv[optind]);
if (!ino)
goto out2;
err = ext2fs_xattrs_open(current_fs, ino, &h);
if (err)
goto out2;
err = ext2fs_xattrs_flags(h, &handle_flags, NULL);
if (err)
goto out;
err = ext2fs_xattrs_read(h);
if (err)
goto out;
if (fp) {
err = ext2fs_get_mem(current_fs->blocksize, &buf);
if (err)
goto out;
buflen = fread(buf, 1, current_fs->blocksize, fp);
} else {
buf = argv[optind + 2];
buflen = parse_c_string(buf);
}
err = ext2fs_xattr_set(h, argv[optind + 1], buf, buflen);
out:
ext2fs_xattrs_close(&h);
if (err)
com_err(argv[0], err, "while setting extended attribute");
out2:
if (fp) {
fclose(fp);
ext2fs_free_mem(&buf);
}
}
