int main (int argc, char *argv[])
{
int i;
int id = DEFAULT_ID;
if (argc == 1)
PrintUsage;
if (*argv[1] == '-')
{
if ((0 != STRNCMP_LIT(argv[1], ID_PREFIX)) || ('\0' == argv[1][SIZEOF(ID_PREFIX) - 1]))
PrintUsage;
errno = 0;
if (((id = ATOI(argv[1] + SIZEOF(ID_PREFIX) - 1)) == 0 && errno != 0) || id <= 0)
{
FPRINTF(stderr, "Invalid id %s specified, using default id %d\n", \
argv[1] + SIZEOF(ID_PREFIX) - 1, DEFAULT_ID);
id = DEFAULT_ID;
}
i = 2;
} else
i = 1;
PRINTF("\n");
for ( ; i < argc; i++)
{
PRINTF("%20s :: %d [ 0x%x ]\n", argv[i], FTOK(argv[i], id), FTOK(argv[i], id));
}
PRINTF("\n");
return 0;
}
/* Work around Linux kernel issues on BTRFS and EXT4 before 2.6.39.
FIXME: remove in 2013, or whenever we're pretty confident
that the offending, unpatched kernels are no longer in use. */
static bool
extent_need_sync (void)
{
/* For now always return true, to be on the safe side.
If/when FIEMAP semantics are well defined (before SEEK_HOLE support
is usable) and kernels implementing them are in use, we may relax
this once again. */
return true;
#if FIEMAP_BEHAVIOR_IS_DEFINED_AND_USABLE
static int need_sync = -1;
if (need_sync == -1)
{
struct utsname name;
need_sync = 0; /* No workaround by default. */
# ifdef __linux__
if (uname (&name) != -1 && STRNCMP_LIT (name.release, "2.6.") == 0)
{
unsigned long val;
if (xstrtoul (name.release + 4, NULL, 10, &val, NULL) == LONGINT_OK)
{
if (val < 39)
need_sync = 1;
}
}
# endif
}
return need_sync;
#endif
}